Norton Type CTU, LCTU, CTU-HD & LCTU-HD Grinders - Manual Grinder, Cylindrical

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10" Type C T U

14" Type L C T U

10" Type C T U - H D

14" Type L C T U - H D

CYLINDRICAL GRINDERS

Plain & Semiautomatic

INSTRUCTION

NORTON

MACHINE

WORCESTER. MASSACHUSETTS. 0/606

&

PARTS MANUAL

No. 1487-6

COMPANY

TOOL DIVISION

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NORTON

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MACHINE TOOL

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WORCESTER. MASSACHUSETTS 0/606. US.A.

DIVISION

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N

The descriptions, illustrations, and specifications as given,
were correct at the time of printing. However, since it is the
policy of NORTON COMPANY to constantly improve its
products, those machines built at earlier or later dates may
differ from these details.

10" Type C T U

14" Type L C T U

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orton company

10" Type C T U - H D

14" Type L C T U - H D

CYLINDRICAL GRINDERS

Plain & Semiautomatic

INSTRUCTION & PARTS MANUAL

No. 1487-6

W

orcester

, M

ass

. oi606

FORM 1 487 - ® - 9 - 69-

u.s

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FOREWORD

The purpose of this Manual is to acquaint the user with the
fundamental functions and adjustments of NORTON 10" Type
CTU Plain and Semiautomatic Cylindrical Grinding Machines.

As indicated

Plain and Semiautomatic Cylindrical

identical to the 10" Type CTU except for actual swing capacity.

This Manual also applies to the Heavy Duty (HD) arrangements
of the above machines and to the 18" Type LCTU Cylindrical
Grinders.
CTU except for the wheel spindle unit, and the 18" Type
LCTU are identical except for swing.

Since introduction of this machine series, design modifications
have been made in certain mechanisms. Drawings of those
modified have been inserted toward the rear of the Parts

Drawing Section.

on the cover, it also covers 14" Type LCTU

Grinders,

The Type CTU-HD are similar to the 10" Type

These are

■

NOTE

For 10" Type CTU-HD (Heavy Duty) and 14" Type LCTU-HD
wheel spindle unit, see Pages 83, 84 and 85.

The descriptions, illustrations and specifications

given in this Manual were correct at time of printing.
However, since the policy of Norton Company is to
improve its machines constantly, those built at later
dates may differ from these details.

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TABLE OF CONTENTS

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SECTION I .. INITIAL SET-UP AND ADJUSTMENT

Location
Unpacking the Machine

Lifting the Machine

Setting-Up
Assembly of Parts
Electrical Connections
Headstock and Footstock

Wheel Sheaves
Mounting the Grinding Wheel.

Wheel Balancing
Filling the Oil Reservoirs

Oiling

Grinding Coolant
Operation Experimenting

SECTION II - LUBRICATION

Viscosity Rating
Hydraulic and Circulating Systems
Wheel Spindle
Grease Selection
Oil Dilution

...................

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..........................................

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. . . ,

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7
7
7
7
8
8
8
8
8
9

9

10
10
10

11

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13
13

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SECTION III - UNIT CONSTRUCTIONS

Table and Taper Adjustment
Headstocks
Footstock
Wheel Feed
Power Wheel Head Traverse (Semiautomatic Machine)

Automatic Grinding Feed (Semiautomatic Machine)
Automatic Feed at Table Reversals (Plain Machine)
Wheel Spindle Reciprocating Attachment
Work Start-Stop Unit
Hydraulic and Lubricating Pump Units

Hydraulic Oil Strainers

Wheel Spindle Bearings Adjustment
Wedge Bolts and Spanner Nuts
Bearing Temperature
Spindle End Thrust Adjustment

......................................................................................

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.

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15
15
15
16
16

16
18
18
19

19
19

19
21
21
22

1

SECTION IV

NORTON

Operating Arrangements

SECTION V

NORTON 6

Operating Arrangements

SECTION VI - GRINDING PRINCIPLES AND GENERAL PROCEDURE

Finish Factors
Wheel Truing
Use of the Steadyrest

Work Location
Adjustment for Taper
Wheel Selection
ALUNDUM* Abrasive

6”

Type CTU Plain Machine

. .

” Type CTU Semiautomatic Machine

.

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................................................................

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................................................................

...............................................................................

................................................................

32 ALUNDUM* and 38 ALUNDUM* Abrasives ....

57 ALUNDUM* Abrasive

CRYSTOLON* Abrasive

Factors Affecting Selection
Index Setting -- Wheel Wear
Wheel Balance

....................................................................................

Center Examination
Grinding Compounds

Cleaning
Spindle Speed

.

*

.........................................................................................

.........................................................................................

Wheel Speed Changes
Work Speed
Traverse Speed
Vibration

Grinding Hints

..............................................................................................

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.....................................................................

....

..........................................................................

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Deep Groove or Shoulder Grinding Attachment . . . .

SECTION VII - WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

23

27

31

31
32
32
32
33
33

33
33
33
33
34
34
34
34
35
35
35
35
35
36
37
39

Operation
Fast Traverse
Fast Reversal

.....................

..................

.................

Automatic Downfeed . .
Adjustments
Instructions
Maintenance

SECTION VIII

.........................

for Setting Up

.........................

Parts . . .

‘

Trade Mark* Reg. U.S. Pat. Off.

42
42
43
43
44
45
46

48

2

INSTRUCTION SECTIONS

LIST OF ILLUSTRATIONS

NORTON 6" x 18" Type CTU Semiautomatic Machine

Right end view of Machine (Covers removed) ....

Lubrication Chart
Lubrication Circuit Diagram
Complete Wheel Feed Unit
Plan view -- Wheel Spindle Housing
Operating Controls -- Plain Machine
Operating Controls -- Semiautomatic Machine . . .

.....................................................................

..............................................

..................................................

................................

...........................

Wheelhead Mounted Automatic Truing Device . . .

PARTS SECTION

Knife Edge Metering Valve
Headstock -- A.C
Headstock -- D.C

...........................................................................

...........................................................................

Footstock & Diamond Tool Holder
Wheel Guard and Parts
Wheel Slide and Parts

.......................................................

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.............................................................

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Reciprocating and Shoulder Grinding Attachment . . .
Wheel Feed Cylinder
Wheel Feed Apron

Feed Screw and Parts

Combination Valve

..................................................................

.........................................................................

..................................................................

........................................................................

Push Button Apron and Cycle Control Mechanism . . .
Table Traverse Cylinder
Table Control Valve

.....................................................................

Main Control Valve Parts

.......................................................

.......................................................

Hand Traverse Apron ................................................................

Miscellaneous Mechanisms
Wheelhead Mounted Automatic Truing Device

...................................................

....

Booster Mechanism Wheelhead Mounted Truing Device
Bearings and Rollers Wheelhead Mounted Truing Device

4

6
12
14
17
20
24

28

40

49

50
51
52
53
54
56

57
58
60
61
62
63
64
65

66
67
68
72
74

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Turn counterclockwise to open belt guard

1.
cover.

Headstock clamping nuts.

2.

Headstock rack pinion.

3.

Work rotation control lever.

4.

Motor push buttons.

5.

Table traverse handwheel.

6.

Table reverse lever.

7.

Truing and grinding speed controls.

8.

Wheel feed manual control lever.

9.

Table dwell controls

10.
Selector for semiautomatic or plain

11.

operation.

Table stop-start and truing lever.

12.

Wheel feed clutch lever.

13.
Wheel feed positive stop

14.
"Click-Count" wheel feed index. Each

15.

click on clockwise rotation represents
amount of feed to obtain . 0001" work

diameter

reduction,

Push in knob and

rotate to make settings in "tenths.

Control for amount of wheel feed at

16.
table reversals (adjustable

from zero

to . 006").

NOMENC LATURE

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

Note

Automatic feed rate controls.*

Steel tape type base way guards.

"One Lever" control for starting grinding

cycle. *

Table swivel adjustment.

to move right end of table toward grind

Turn clockwise



ing wheel.
Footstock rack pinion.
Footstock lever. Pull way back to lock

spindle in withdrawn position.
Footstock clamping nuts.
Footstock spindle binder.
Filter for spindle lubricant.
Spindle lubricant sight glass (one for each

bearing).

Lubricant stream must be

continuous when wheel is running.
Coolant control lever. For manual operation

of coolant flow.
Electrical control enclosing case.

Wheel head mounted automatic truing device

(at extra cost)

: Controls marked * are on Semiautomatic

Machines only.

Spindle

oil Reservoir Drain^

^

Hydraulic

Lines To Automatic

Wheel Quord Type
Dev ice

Table

(

cx+ra )

Bleeder

(One a+ each

Flow

Ways

Pressure
Ways

ConTrol

LubricaTion

Relief Valve

LubricaTion

Ways Lubricant-
Ways

LubricanT Reservoir

_____________

Valve

end)

valves

Pressure

Truind

________

______

SysTenv^

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Hydraulic Oil FilTer

Ways LubricanT FilTer

_______

____

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Hydraulic SysTem Relief valve

l Hydraulic

Oil Pressure

Should

Be Approx. S7S Lbs.)

/

Hydraulic Reservoir

sighT

QSass

N 6451

LOCATION

SECTION I.

INITIAL SET-UP AND ADJUSTMENT

Erecting drawings are sent with every machine shipped from the
factory for the assistance of the millwright in setting up our machines.
In setting up these machines, care should be taken to provide ample

clearances.

Although it is not imperative that these machines be set on a

concrete floor, this type is preferable where precision work is to be done.

If a wooden floor is used, make sure it does not sag or transmit vibrations
from moving trucks or adjacent machinery. Also be prepared to relevel
the machine from time to time as a check on floor settlement.

UNPACKING THE MACHINE

Care should be exercised in removing the machine from the box
or skid in which it is shipped. All containers, blocking, or skids should
be removed with caution.

In the event that heavy tools are used, direct
blows on the container or skids should be avoided, since the accurately
constructed machine might be injured or thrown out of adjustment. The
entire shipment should be checked against the packing list, and any shortage
reported at once. See that no small parts are thrown away, mislaid, or
lost.

LIFTING THE MACHINE

The three-point
around short bars, thrust into the large cast holes in ends of the base and
place a hook under the shelf at the rear of the coolant tank. Hemp rope,
wire rope, or steel chains may be used, with rope being given the
preference. Be sure that kinks or knots do not tend to lift the table or

method of lifting should be used. Place slings

damage any portions of the machine while lifting.

SETTING UP

Machines of 18, 36, and 48" work length capacity rest on three
pads cast into the base. With the use of steel shims and an accurate spirit
level, shim the pads as necessary in order to level the machine perfectly in

both directions.

Use the table top or ways as planes.

Machines of 72, 96, and 120" work length capacity have adjustable

foundation jack screws.

These machines must have a concrete foundation, but

do not grout in base.

Set the foundation plates furnished with the machine, as indicated

on the blueprint.

After placing the machine, remove the tables and with a
sensitive spirit level on the flat way of the base, level the machine lengthwise
and crosswise. Then apply the hold-down screws at the ends of the base.
Relevel with the adjusting screws after the hold-down screws have been

tightened.

7

ASSEMBLY OF PARTS

Assemble all guards, pipes, and the coolant hose as received
separately with the machine. Refer to the pictures in this manual if
assistance is needed in determining their location.

ELECTRICAL CONNECTIONS

Care should be exercised in making the electrical connections.
This task should be entrusted only to a competent electrician. Refer to the
wiring diagram furnished with the machine.

The operating mechanism of the disconnect switch on the control
panel is interlocked with the enclosure door. The door handle must be in the
"OFF" position before the enclosure door can be opened.

Connect the incoming power lines to the terminals marked

"Customer's Connections" with a red tag on the disconnect switch. A
yellow tag attached to the control panel gives the proper voltage, cycle, and
phase. Check for correct wheel motor rotation and if not correct, reverse
two of the incoming line connections.

HEADSTOCK AND FOOTSTOCK

\

The headstock and footstock should be carefully cleaned. The
spindles of both should be thoroughly wiped out and the centers carefully
inspected. Be sure there are no nicks or burrs on the centers and that they

properly fit their respective holes. Centers must seat well in their spindles
if good results are to be secured.

Never move the headstock or the footstock unless the swivel table

is

clean.

WHEEL SHEAVES

Three wheel spindle belt sheaves are supplied, each stamped with the

corresponding wheel size with which it must be used. With the safety arm rod

properly attached to the hinged hood of the wheel guard, a safety lever will

prevent the mounting of any but the proper size belt sheave.

In mounting the wheel spindle belts, see that they are just tight

enough to prevent squealing.

MOUNTING THE GRINDING WHEEL

First, the wheel should be tapped lightly with a small wooden
mallet or a block to be sure it is of sound structure.
is emitted the wheel should not be mounted.

Being satisfied that the wheel is

Unless a clear ring

sound, one of the blotters supplied by the wheel maker should be placed

8

on the sleeve. Then mount the wheel. Do not force it on the sleeve; it should
slide on easily. Now place another blotter on the wheel sleeve flange and slide
this on to the sleeve. Line up the cross-mark on the flange with a similar mark
on the sleeve and insert the screws.
the wheel is gripped between the blotters. Do not at first draw one screw up
as tight as possible and then the next, also tight. Take up on the first until it

Draw the screws up snugly making sure

is snug. Then go to the diametrically opposite screw and draw it up snug.
Then draw up the screw 90° from the others and continue this procedure

taking up a little at a time until all screws are tight. This is important

because unless the flange is drawn down evenly against the wheel, the
latter may be cracked. Tighten screws to 15 foot-pounds with all threads
free running,clean, and rust free.

WHEEL BALANCING

The grinding wheel should then be mounted in the machine and the
wheel trued. The entire assembled wheel unit consisting of the wheel sleeve
and the grinding wheel should then be mounted on an arbor and placed in a
balancing stand for determination of balance of the unit. Remove the balancing
weights to be found at the center of the wheel sleeve. Allow the unit to
come to rest and chalk mark the wheel on the heavy side (at the bottom).
Reinsert the weights diametrically above center until the wheel unit will come
to rest in any angular position. When the wheel is in static balance, tighten
the weights, remount the wheel unit in the machine, and retrue the wheel.

FILLING THE OIL RESERVOIRS

There are three oil reservoirs to fill; the wheel spindle lubricant,
the hydraulic, and the ways lubricant reservoirs.

The wheel spindle
lubricant reservoir is within the wheel spindle housing. Fill this reservoir
with approximately

quarts of 55-85 S.U. V. high grade spindle oil through

the hole for the bayonet gage.

The

standard hydraulic fluid reservoir is located inside of the
machine base, beneath the wheel slide. Its capacity is approximately 38
gallons. Fill with a high grade hydraulic fluid of 145-170 S.TJ.V. to the
level indicated on the sight gage in the base wall. For the outside hydraulic
fluid reservoir which is furnished as an optional extra, the same hydraulic
fluid should be used. Further instructions will be found on a plate attached

to the top of this reservoir.

The ways lubricant reservoir is accessibly mounted at the junction of

the front and rear base beneath the wheel spindle belt guard.

Fill to the
level indicated on the sight gage with the lubricant specified on the instruction
plate mounted immediately above, or on, this reservoir. Approximately 3^

gallons are required.

9

OILING

Locate all oil holes and cups on the machine and fill with a medium

grade of good machine oil.

GRINDING COOLANT

Whether soluble oil or a paste-type coolant compound is to be
used (mixed with water) see that the coolant mixture is rich enough to prevent
rusting-the

machine. Coolant tank capacity is approximately 7 5 gallons.

With respect to the compound to be used as a grinding lubricant,
NORTON COMPANY makes no specific recommendation as to manufacture.
However, a compound free from soda is advised.

In the event that the

compound selected proves to have an undesirable foaming effect, the addition

of a little kerosene to the coolant will correct this difficulty.

OPERATION EXPERIMENTING

See that all oil and grease cups are filled, and that oil in

reservoirs is at proper levels. Check coolant reservoir.

Before starting the machine, move the wheel slide to its extreme
rear position.
of the table and centralize them with the grinding wheel.

Then place the headstock and the footstock at the extreme ends

Set the table

reverse dogs so that the table will travel about 6" and the table movement

does not bring either the headstock or the footstock too near the grinding
wheel. Before starting the pump motors be sure that the table start-stop
lever is in the stop position. Naturally it should be seen that it is in the
stop position until everything is known to be in readiness to run the table.

Time should be spent in determining the functions of the various

controls and care taken to avoid damage.

Read the description of your

particular machine arrangement in Section IV or V.

10

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SECTION II.

VISCOSITY RATING

Lubricating and hydraulic oils, greases
in the operation of NORTON * grinding machines, should be of a correct type
and good quality.

NORTON machines to get maximum production with minimum down time.

To evaluate the physical properties of an oil, the term "viscosity" is
used.
temperature and rate. The Saybolt Universal Viscosimeter represents the
U. S. standard means of determining the time in seconds for 60 c. c. of oil
to flow through a standard orifice at a specific temperature. The viscosities
indicated will be identified at 100°F. for simplicity of control.

the abbreviation for Saybolt Universal Viscosimeter.

U. S. standard
South American standard
British standard .
Continental .

This indicates the measured resistance of the oil to flow at a given

Identification of the viscosity represented by the S. U. V. at 100°F. is

The following information should be valuable to the user of

LUBRICATION

and grinding lubricants, applied

Saybolt
Saybolt

Redwood
Engler

H

R

A

*

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HYDRAULIC AND CIRCULATING SYSTEMS

Oils for hydraulic and circulating systems must be well refined
to maintain stability of the oil or freedom from oxidation within the limits
of temperature and pressure under which an oil of this type must function.
The residues formed during the oxidation of a petroleum oil are in the form
of gum and varnish which readily disturbs the sensitive valves of a hydraulic
control mechanism. This also mignt be the cause of plugged pipe lines in the
central lubricating system. The "pour point" of an oil indicating the point
at which an oil is no longer a fluid, will present a problem only when the

equipment

new oil in drums is stored in the open with no physical protection. To assure

correct function of the hydraulic system, a high grade oil, well refined and
free from impurities, must be used.

WHEEL SPINDLE

operation of the entire machine. NORTON Grinders are no exception to this
rule.
of 55-85 S. U. V. at 100° F. for use in all NORTON machines with plain bearings.

is

exposed for long periods of time to low temperatures, or when the

The lubrication of any grinding wheel spindle is critical to the successful

For spindle oil, we recommend the use of the highest grade oil with vicosity

*Reg. U. S. Pat. Off.

«

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11

LOOSEN PINCH-BLOCKS AND LIFT

RIBBON QUAR D TO INSPECT

LUBRICANT DRAIN-HOLES
(ONE AT EACH

ENO OF FLAT ANO

WAYS

STEEL.

VEE WAY )

STREAMS

MUST SHOW IN SIQHT QLASSES

times when spindle

of

SPINDLE

lubricant

is

IN

A

t

All

OPERATION

COOLANT TANK -
OPACITY APPROX

55 G

allons

to

O

il

C

ups and holes

USE 300

S.U.V.

LUBRICATING OIL.

WHEEL S

SPlNOLE LUBRICANT

FILL WITH 50-60 S.U.V, AT IOO°P,
SPlNOLE OIL TO LEVEL INDICATED
ON BAYONET QAQE (APPROX

R

AFTER 500 HOURS OF SERVICE.

150 S U V. AT IOO° HYORAU Ll C
LEVEL INDICATED BY SIQHT QLASS

IN BASE WALL ( APPROX. 32 QALS)
FOR OUTSIDE RESERVOIR, FOLLOW
INSTRUCTIONS ON PLATE

AFTER SOO HOURS

WHEN EVIDENCE OF COMTAMIN ATI ON

EXISTS THOROUGHLY CLEAN
RESERVOIR. ON CMANQE.

FILL WAYS LUBRICANT RESERVOIR.
IN ACCORDANCE WITH INSTRUCTIONS

ON PLATE ( APPROX. 3 -4? QAL3.)

AFTER SOO HOURS OF SERVICE

PINDLE LUBRICANT

FILL POINT.

ecommended change

HYDRAULIC OIL

HYDRAULIC RESERVOIR. WITH

RECOMMENDED CHANGE

WAYS LUBRICANT

RECOMMENDED CHANGE

OF SERVICE

QTS.)

Oil- TO

-OR

SE-779-B

DR.WO, BY H. RAND

V- FONTAINE

3/1/5-/

Spindle oil should be free from any form of contamination, be
stable, and operate with freedom from oxidation. No additives should be
present. The oil should be of good quality and carry the guarantee of a
reputable refiner.

GREASE SELECTION

The selection of the correct grease will be governed by the speed,
temperature, and exposure under which the machine must operate.
Ball bearings at low temperatures require a soft cup grease. High
temperatures require a high grade soda soap grease which possesses

a

high
melting point. When moisture is present, use a water insoluble grease.
All greases must be stable, in a pure form free from fillers and of good
quality. The grease should be kept free from dirt and all forms of

contamination. In general, bearing manufacturers recommend that a ball

bearing be filled from one third to one half capacity and be approximately

maintained at that level. Greases must not bleed in operation. When the
oil bleeds from the soap in a grease, there is the danger that the dried
soap left by the separation will be the cause of mechanical failure. Stability,

therefore, is of extreme importance in grease selection.

OIL DILUTION

The NORTON Type CTU Machine is built with various hydraulic
operating valves which require clean hydraulic oil of good quality in order
that they all may operate satisfactorily.

As nearly as possible, care has been taken to prevent coolant

splash, spray, or mist from entering the hydraulic reservoir which would

tend to form a harmful emulsion or sludge.

If, however, the oil takes on a yellow appearance, the indications
are that some coolant has entered the hydraulic system and sooner or later
will cause faulty action of the delicate hydraulic valves.

In any event, we recommend that the hydraulic and spindle oil

reservoirs be drained and refilled after 500 hours of use.

13

(9)

END THRUST

SR/HOLE BOX

SPINDLE

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LUb. OIL TANK 3-1/? QnilONS

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SKINNER ML HR

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B4S RELIEF VAIVF

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VJCKERS LUB. (UVD.) PUMP (faCTU) OOUBLE
VICKERS LUB, (UTD.) PlifTP (1
LUB. MANIFOLD

1

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1

SPINDLE LUB. PUMP

OIL PUMP BODY

PUMP GEAR (IDLER)
PUMP GEAR (DRIVER)

2

CONE CHECK VALVE (CRACKING PRESSURE

1

LUBRICATING CONTROL VALVE

1

'-1IEELSLIDE - USED AS SPINDLE LUB

i

OIL MANIFOLD 4 FIX RESTRICTION

DESCRIPT mil

________________

QCTU)

_____________________

______

PUMP (30PM 4 1/2 GPM)

DOURl

F

-PUMP (50PM 4 \/2 GPM)

s

to io

psn

OIL RESERVOIR

NORTON NO

141381
INOSIR-n

1531

202411-D
MC-7240
136051

S3829-F.
S3878-E

S9S17-t

T S 2241
ND-2950

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LUBRICATION OF THE FEED SCREW
A NO HALF NUT. THERE ARE TWO

SOURCES OF SUPPLY TO THIS
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SECTION III.

TABLE AND TAPER ADJUSTMENT

UNIT CONSTRUCTIONS

\ A

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These machines have a sliding table which travels on the flat and vee

ways of the base, and a swivel table pivoted in the center on top of the sliding

table.

The swivel adjustment is at the right end of the table and provides a means
for making taper settings. The graduation gib is intended as a guide only and
any finer adjustment may be obtained by the trial and error method using the
adjusting screw at the front.

HEADSTOCKS

Two types of headstocks are available for these machines, one a dead
and the other a live center type. In the dead center type, the center remains
stationary and the work drive plate revolves about it. In the live center type,

the spindle, center, and work drive plate revolve as a unit.

The stopping and starting of the headstock motor is accomplished
automatically. However, if desired, this motor may be operated by
push buttons located on a panel at the left front of the machine.

A

selector

switch marked "Hand-Auto" is provided for this purpose.

Both the dead center and the live center types of headstock are driven

directly through vee belts. The headstock drawings in Section VII show how

the belts are adjusted by means of eccentric shafts.

The ball bearings of both dead and live center headstocks are preloaded
and prelubricated so that no attention is required.

Headstock center taper

is No. 14 Jarno.

FOOTSTOCK

The standard footstock is the lever type with spring compression

control. The initial movement of the hand lever retracts the center.

The footstock spindle is clamped by means of a large hand knob on the

front of the footstock body.

Footstock center taper is No. 14 Jarno.

15

WHEEL FEED

Wheel feed is accomplished by afeed screw that meshes with a

cast iron half-nut attached to the under side of the wheel slide.

The screw
is mounted in ball bearings and revolves in a bath of oil. A drawing of the
complete wheel feeding arrangement including the power wheel head traverse
mechanism as furnished on semiautomatic machines, follows.

A counterclockwise rotation of the wheel feed handwheel moves the
grinding wheel in towards the work. A positive stop and an indexing arrangement
of the handwheel provide accurate work size setting.
knob inwards and rotating it clockwise, wheel feed settings in increments to

provide . 0001

” of work diameter reduction up to a total of . 008”, may be

By pushing the indexing

selected.

The following table of measurements represents a correlation of

work diameter reductions in both the English and metric systems:

Settings

Each notch in index knob
One turn of index knob
One turn of handwheel

English

.0001"
. 008"
. 200"

Metric

. 0025 MM.
. 20 MM.

5.

0

MM.

POWER WHEEL HEAD TRAVERSE (Optional with Plain Machines)

This arrangement is provided on the Semiautomatic

power positioning of the grinding wheel. It operates

The wheel slide rapid traverse piston rod (P) (See Wheel Feed Unit

as

Machine for rapid,

follows:

drawing in this section) attached to the end of the cross feed screw (T) moves

the screw and wheel slide forward as a unit until the rapid traverse piston
(Q) closes the main exhaust port (R). Oil now is metered out of cushioning

port (S) which slows down the speed of the wheel slide.

At the termination
of the cushion stroke, the end of the piston gently contacts the front wall of the
cylinder for positive stop.

For adjustment of wheel slide rapid traverse movement,

loosen check
nut (V). Then turn screw (W) in or out to decrease or increase the distance of
the rapid traverse movement.

valves at the rear govern the rate of the forward and backward cushioning

Then retighten check nut (V). Two needle

strokes.

AUTOMATIC GRINDING FEED (Optional with Plain Machines)

Upon termination of the rapid traverse and cushioning stroke of the

wheel slide in forward movement, the automatic grinding feed begins.

16

This is accomplished by hydraulically rotating the feed screw. The grinding
feed continues at the rate set by #17 on Page 4 until the stop on the wheel feed
handwheel contacts positive stop #14.

Hydraulic rotation of the feed screw is by means of a wheel feed control

cylinder; the details of which are shown in the drawing of this unit that appears
in the Parts Section. Hydraulic pressure moves the double end piston in this
cylinder, and the rack teeth on the piston rod rotate the rack pinion which
causes rotation of the wheel feed gears and the feed screw. Automatic feed is,

therefore, under conditions of metal-to-metal contact.

AUTOMATIC FEED AT TABLE REVERSALS

With the manual control lever #9 as shown on Page 4 turned to the left,
automatic wheel feed at each table reversal is obtained in traverse grinding.
The amount of automatic feed obtainable at each table reversal is from zero

to 006". The amount of feed desired within this range is set by control #16
as shown on Page 4.

The total amount of this automatic feed that is obtainable is . 150" in
terms of diameter reduction.
When this feed is used, there is automatic reset of the wheel head after

This represents . 075" of wheel slide movement.

grinding to size.

When it is desired to traverse grind without having automatic feed at
table reversals, throw control lever #9 to the right. This equalizes the oil
pressure on both ends of the wheel feed control cylinder. When this is done,

the wheel feed handwheel may be rotated at will without disengaging the
handwheel clutch. To side grind a shoulder or step diameter, follow the
instructions in Section IV.

WHEEL SPINDLE RECIPROCATING ATTACHMENT

When a spindle reciprocating attachment is supplied, reciprocation of the

grinding wheel from 0" to 3/8" may be obtained. Normally, the setting made at
the factory gives approximately 1/16" of reciprocation. To increase or
decrease this amount, remove the circular cover behind the reciprocation
control lever on top of the wheel spindle housing. Insert a pin wrench in the

holes of the graduated flange beneath this cover, and set to the amount desired.
Each graduation on the flange represents 1/16" reciprocation of the spindle.

18

WORK START-STOP UNIT

Work rotation is automatically started and stopped on both Plain
and Semiautomatic Machines. This unit is located inside the left front apron.
A limit switch is operated by hydraulic and spring action so as to start and

stop the work drive motor. A selector switch, mounted on the left front pane],

may be turned to HAND if manual control is desired.

HYDRAULIC AND LUBRICATING PUMP UNITS

These units are on the right side of the machine immediately
beneath the wheel spindle belt guard. The pressure relief valves for both
the hydraulic and ways lubrication systems are in this area. Normally,
these valves are set at the factory for the pressure at which each system

should operate. However, metal tags specifying the correct pressures are
attached to each valve. Maintain ways lubricant pressures at 4 to 6 pounds.

Excessive pressure may cause improper positioning of sliding components.

On the discharge side of both the lubrication and the hydraulic pumps

are filters. These should be checked periodically, and given such attention
as may be necessary. See that the hydraulic filter element does not become
clogged, because this condition may result in a faulty machine action.

HYDRAULIC OIL STRAINERS

Machines arranged with the hydraulic fluid reservoir inside the base
have a strainer for the hydraulic fluid located in the suction line of the
hydraulic pump beneath the wheel slide. On machines with the hydraulic fluid

reservoir outside, this strainer is in the tank. These should be checked
periodically to prevent clogging.

WHEEL SPINDLE BEARINGS ADJUSTMENT

While these bearings are adjustable, we caution against any

promiscuous tampering with them. Many machines are on record whose bearings
have not been adjusted over long periods, and it is advised that such adjustments
be made only when the need has been definitely proved.
slight adjustment should be made and repeated if necessary. This is to avoid

In this case, a very

the possibility of tightening too much and causing overheating or seizure.

In making an adjustment, set up but one bearing at a time, allowing

the machine to run under working conditions for a day or so before adjusting the
second bearing, if this necessary. The cooler bearing is naturally the one to
adjust first. Do not attempt to adjust bearings when they are cold. In
preparing to adjust a bearing, be sure to loosen the wedge bolts of the bearing
concerned. Do this upon removal of the spindle housing cover so that this

step will not be overlooked.

19

PLAN

VIEW

WHEEL

SPINDLE

HOUSING

DO

o

SPINDLE

WEDGE

BOLTS,

OIL FILTER

T f!

!

M-

SPINDLE

CONTROL

!

-

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OIL FLOW

VALVES

SPINDLE
OUTER

BEARING

spanner

N 6713

SPINDLE

INNER

BEARING

SPANNER NUT

V

SPINDLE

END THRUST

ADJUSTMENT

NOTE

Reduction in the diameter of the bearing bore is obtained by drawing the
bearing into its case by tightening the inner spanner nut. The taper on the
O. D. of the bearing is such that when the bearing is drawn into its case

. 012", a reduction of . 001

Therefore, to obtain . 001

n is obtained in the bearing bore.

” reduction of the spindle bearing bore, set

up a clearance of . 012" between the outer spanner nut and the spindle bearing

case by use of a feeler gage. Now tighten the inner spanner nut until the
outer nut is seated against the bearing case. This should give . 001" reduction
of the bearing bore. Use this twelve to one ratio to obtain any reduction
desired.

When the bearing has been drawn into its case, loosen both the inner and

outer spanner nut. This move is important. The bearing will remain at the
point to which it has been drawn. Now tighten the wedge bolts which will
straighten the bearing in its case if there has been any tendency toward twist.

After the wedge bolts have been brought up snugly (do not tighten excessively),

bring up the inner and outer spanner nut snugly but not too tightly and replace
the housing cover.

WEDGE BOLTS AND SPANNER NUTS

The wedge bolt tightening operation is extremely important. They should be
brought up snugly but not excessively tight. The wedge bolts straighten up the
bearing in its case, and to do this effectively, the outer and inner spanner nuts
must be loose. After this is done, tighten up the outer and inner nuts firmly,
but not too tightly.

Hammering on the nuts will set up strains in the bearings

which may lead to trouble. Do not pound on the wrench with a hammer and

under no circumstances should a set or punch be used in adjusting these spanner
nuts, since these tools will cause a peening action which in time might cause

oil leakage from the bearing.

BEARING TEMPERATURE

Bearings should never be adjusted when they are cold. Should the machine
be in need of bearing adjustment, allow it to run for some time until the bearings
warm up. A bearing, if adjusted when cold will often seize the spindle when the
latter is allowed to run. This seizing is caused by the differences in expansion
occurring in the spindle parts and the fact that a cold adjustment does not
usually provide clearance enough for the expansion of the spindle.

21

SPINDLE END THRUST ADJUSTMENT

When required, this adjustment is made by two spanner nuts at the

end of the spindle worm. One nut locks the other in place. Be sure to make
this adjustment in small increments. Too tight an adjustment may bind the
spindle. Do not peen these nuts over as a locking precaution, since this

will prevent proper seating of the nuts against the worm.

22

SECTION IV.

CYCLE CONTROLS CONSIST OF

NORTON 10" TYPE CTU PLAIN MACHINE OPERATING ARRANGEMENT

1. Work rotation -- stop and start.

2. Coolant flow -- stop and start.

3. Interlock

of

table handwheel -- connect and disconnect.

4. Wheel feed -- advance and retract.

PLAIN MACHINE

This type of machine has the following features for traverse grinding of

work:

I

Hydraulic table traverse, selective for grinding and truing speeds.
Single speed hand drive apron with automatic handwheel interlock.

II

Individual hydraulically controlled adjustable dwell at each end of

table reversal.

Hydraulically controlled

Ill

adjustable wheel picker feed at each end of

table reversal. (Revolving feed screw type.)

IV

Automatic

or

manual control of work revolution stop and start, with

manual jogging control.

V

Automatic

VI

Hydraulic means to convert picker feed to manual control for grinding

control of grinding coolant.

shoulder and step diameter grinding on work without disturbing

feed set-up.

FUNCTIONS

1.

Place work in the machine and engage footstock center in work.

Throw table stop-start

a.

Table starts traversing and dwells at each table reversal if

lever (H) full motion to the left.

desired. (Right- and left-hand table dwell controls clearly
identified on front of machine.

b.

Work revolves with selector switch (S) set to AUTO.

c.

Grinding coolant starts to flow.

d.

Table handwheel (T) is disconnected from rack pinion.

e.

Grinding wheel advances at an initial rapid feed to take up

)

existing backlash.

Grinding wheel is fed into the work at each table reversal

f.

(adjustable by control (L») from 0 to . 003") until work is down

to size.

wheel

23

F

G

H

o

n

D

C

k

B

A

/

SE-849-C

IDENTIFICATION OF OPERATING CONTROLS

Type CTU Plain Machine

A.

Wheel Feed Handwheel. Graduations equal .001" in work diameter reduction
B. Index Knob. Each click on rotation represents setting for .0001" work diameter reduction
C.

Handwheel Clutch

D. Wheel Feed Positive Stop Arm

F. Pointer for determining amount of wheel feed

G. Reverse Lever

H. Table Stop-Start Lever. This lever also produces truing speed as set by controls to the left

J. Manual Control Lever

L. Control for amount of feed at table reversals

S. Selector switch for manual or automatic work rotation control

T. Table Handwheel

24

2. Throw table stop-start

lever (H) full motion to the right.

a. Table stops traversing.

b. Work and coolant stops.

c. Table handwheel (T) is connected to rack pinion.
d. Grinding wheel retracts

the total amount of picker feed plus

the initial rapid feed.

3. Move footstock lever releasing work and remove work from machine.

When it is desired to obtain more clearance between work and wheel

for loading, proceed as follows:

1. Declutch wheel feed from feed cylinder by lever (C) when wheel is
retracted.

2. Crank wheel feed handwheel (A) clock-wise to desired clearance,
between work and wheel.

3. After starting table, turn wheel feed handwheel (A) counterclockwise
until wheel contacts largest diameter on work.

4. Engage wheel feed clutch (C) to wheel feed cylinder and proceed as

originally

explained.

To side grind shoulder or step diameter on work proceed as follows:

When work is to size and before stopping table traverse,

1.
manual control lever (J) to the right.
a. Converts cycle controls from table stop lever (H) to manual

control lever (J).

Turn wheel feed handwheel (A) clockwise

2.

wheel and work.
Throw table stop-start lever (H) full motion to the right.

3.

a. Table stops traversing.
b. Table handwheel (T) connects to rack pinion.

4.

Side grind shoulder or step grind as desired.

5.

Throw manual control lever (J) to the left.
a. Converts cycle controls back to the table stop-start lever (H).
b. Work and coolant stops.

c. Grinding wheel retracts the total amount of picker feed plus

the initial rapid feed.

throw

for clearance between

25

TO SET WHEEL FEED INDEX

Proceed as follows:

1. Declutch (C) handwheel (A) and back off wheel. Close Valve (L).
Put workpiece in machine.

2. Start table traverse, coolant flow and work rotation by throwing table
start-stop lever (H) to the left.

3. Feed wheel by handwheel (A) until faint spark from workpiece occurs,

then engage handwheel clutch (C).

4.

Pull out knob (B) and move hand-wheel to left until positive stop

contacts positive stop arm (D).

5. Rotate index knob (B) clockwise the amount of grinding feed desired
by using pointer and graduations on handwheel.
handwheel equals .001

” work diameter reduction. Each click of

Each graduation on

index knob equals .0001" work diameter reduction.

6. Throw table start-stop lever (H) full right to stop table, coolant flow,
and work rotation, then open valve (L) so as to give the proper amount

of feed at each table reversal.

7. Grind a sample workpiece. If necessary, correct for final size by
movement of index knob (B).

26

SECTION V.

SEMIAUTOMATIC MACHINE

NORTON 10

OPERATING ARRANGEMENTS

” TYPE CTU SEMIAUTOMATIC MACHINE

This type of machine has the following features for plunge cut work or
conversion to traverse work. Semiautomatic machines have all the features as
described under Plain Machines and in addition have the following:

Hydraulic means to convert picker feed or continuous feed to manual

I

control for shoulder and step diameter grinding on work without
disturbing wheel feed set-up.

Hydraulic rapid wheel head traverse with adjustable stroke.

II

Continuous straight infeed for plunge cut work.

Ill

Means to convert semiautomatic arrangement of machine to a plain

IV

machine.

Electrically controlled timing device to automatically terminate cycles

V

if desired.

Functions (with selector valve (P) set to PLUNGE).

1. Place work in the machine and engage footstock center in work.
Operate wheel head traverse lever (N) toward operator.
a. Energizes wheel slide valve solenoid.
b. Wheel advances rapidly.

c. Work revolves with selector switch (S) set to AUTO.
d. Grinding coolant starts to flow.
e. Grinding wheel advances at an initial rapid feed, to take up

existing backlash.

f. Proceeds to grind at the predetermined rate of feed, until it is

stopped by (D) and sparks die out.

g. Electrical timer indicates termination of grinding cycle, and

de-energizes wheel slide valve solenoid.
h. Wheel slide retracts rapidly.
i. Wheel feed retracts rapidly.
j. Work stops revolving.
k. Coolant stops flowing.

2. Move footstock lever releasing work and remove work from machine.

27

r

IDENTIFICATION OF OPERATING CONTROLS

A.

Wheel Feed Handwheel.

Index Knob,

B.

work diameter reduction.

Each click on rotation represents setting for . 0001"

G

H

A

o

J

Graduations equal .001" in work reduction.

p

N
M

1

M

J

C. Handwheel Clutch.

Wheel Feed Positive Stop Arm.

D.

Pointer for determining amount of wheel feed.

F.

*G. Reverse Lever.
*H.

*L.
M^. Control for initial rate of plunge feed.
M2.

N. Cycle Control Lever. Pull to bring wheel forward, push to retract

*P. Selector for Plain or Semiautomatic operation.

Table Stop-Start Lever,

by controls to the left.

J. Manual Control Lever.

Control for amount of feed at table reversals.

rides up on Stop Block CV4-540, Page 33

wheel or stop cycle.

This lever also produces truing speed as set

This starts when Stop Arm "D"Control for ultra-fine rate of feed,

1

S. Selector switch for manual or automatic work rotation control.

T.

Table Handwheel.

(*These controls are furnished only with hydraulic table traverse machines).

28

Conversion to plain machine arrangement:
Move selector valve lever (P) to the "traverse" position.

a. Transfers cycle controls from wheel slide lever (N) to table

stop-start lever (H).

Lever control for termination of cycle.

1. Turn selector switch (S) to HAND, thus eliminating the electric timer.
Then substituting

(g) in above functions by operating wheel head traverse

lever (N) toward machine to de-energize wheel slide valve solenoid.

To side grind shoulder or step diameter on work proceed as follows:

1. When work is to size, throw manual control lever (J) to the right,
a. Converts cycle controls from wheel head traverse lever (N) to

manual control lever (J).

2. Turn wheel feed handwheel (A) clockwise for clearance between wheel

and work.

3. Side grind shoulder or step diameter manually.

4. Throw manual control lever (J) to the left.

a. Converts cycle controls back to the wheel slide traverse lever (N).

TO SET WHEEL FEED INDEX

Start machine, load workpiece, push control lever (N) to put grinding

1.
wheel in back position.

2.

Declutch handwheel (A) with control (C) and revolve handwheel

clockwise several turns.

3.

Pull control lever (N) to bring wheel forward. On this movement the

Close wheel feed valve.

grinding wheel should stop short of the workpiece. If it appears that
the wheel will contact the workpiece, immediately retract wheel by
pushing control lever (N). Then revolve handwheel

more turns.
movement

4.

When wheel stops short of the work-piece on forward movement, feed

This will provide additional

of

the wheel.

clearance on forward power

clockwise several

wheel into light contact with work-piece by counterclockwise movement

of handwheel (A). Then reclutch handwheel by control (C).

5.

Pull out index knob (B) and move handwheel to left until positive stop

contacts positive stop arm (D). Now rotate index knob (B) clockwise
the amount of grinding feed desired.
NOTE: Each click of index indicates setting for . 0001" work diameter

reduction;

diameter

each graduation on wheel feed handwheel equals . 001" work

reduction.

29

6. Retract grinding wheel by pushing control lever (N). Open valve
(M) slightly. This valve governs the rate of the grinding feed.

Now bring wheel forward by pulling control lever (N) and when
wheel begins to grind work-piece adjust valve (M) to obtain the

feed rate desired.

7. When wheel feed stops through contact of positive stop on
handwheel with positive stop arm (D) retract wheel by pushing
control lever (N). Inspect workpiece for size. Correct setting

as necessary by index knob (B).

8. Set Timer by timing the next piece ground.

30

SECTION VI.

FINISH FACTORS

GRINDING PRINCIPLES AND GENERAL PROCEDURE

The quality of finish of the ground surface is due to the manner in which the

machine operates and to the condition of the wheel face. The first is a matter
of mechanical perfection and it is felt that the NORTON machines are second
to none in smoothness of operation and control, and in freedom from
vibration. The second, the condition of the wheel face, is a matter of technique,
a grinding skill which is only acquired by experience.

WHEEL TRUING

In preparing the wheel face, the principle laid down is that the rougher the
face of the wheel, the rougher will be the finish on the work. Conversely, if
fine finishes are to be obtained, the wheel face must more nearly approach a

smooth surface. Since the dressing of a grinding wheel with a diamond

or other device consists of breaking out of the grinding surface of the wheel

abrasive particles to present a new series of cutting faces, truing for rough
finishing will mean taking out larger particles of the abrasive than in truing
for fine finish.

Hence, in rough truing, the wheel feed is comparatively
heavy and the traverse fast, while fine finish truing demands the lightest of
wheel feeds and the slowest of table traverses.

Truing equipment varies with the work at hand. Several devices are available

to supplant the familiar diamond such as the "Place,

wheel dressers.

Various methods are used to hold the truing devices to the

n M

Ross, " or "Precision

machine, quick detachable standards being available for direct attachment of

these devices to the table. In the majority of cases, however, it is found
that the diamond toolholder attached directly to the table is entirely

satisfactory. The toolholder may be permanently clamped to the table, by
sliding the truing bar to clear the work, during grinding.

”

The routine practice in wheel truing, following the balancing of the wheel,
consists of feeding the wheel into the diamond about 0. 001" and traversing
the diamond across the wheel face at a medium rate. The wheel should be
fed in about 0. 001" at each pass until a perfectly round wheel is assured.
This should (the wheel grain being correct) produce a wheel surface
satisfactory for rough grinding.

Truing for finer finishes from this point consists of reducing the table
traverse to the slowest speed comparable to the finish desired and reducing
at the same time the amount of the feed of the wheel toward the diamond.
In fact, for the finest of finishes, it is advisable to make several passes of the

wheel across the diamond without any inward feed of the wheel.

31

In summation, it may be repeated that good truing technique is only
obtained through experience.
surface of the wheel to expose sharp abrasive surfaces necessary for the

Rough truing consists of opening up the grinding

rapid removal of stock. Finish truing, requiring a smoother abrasive face,
requires the lightest possible feeds of the wheel to the diamond and the
slowest possible table traverse compatible to production.

Care should be taken in any truing operation, especially if the
comparatively valuable diamond is being used. Avoid continual truing. A
wheel which requires constant truing is unsuitable for the work and should

be replaced. Avoid excessive wear of the diamond on wheels which are too
hard. Avoid giving a heavy truing feed to the wheel and then pouring on the

coolant since, with the diamond heated up, the coolant may crack the stone
or loosen it in its nib. Always bring the diamond onto the wheel in the
approximate center of the grinding surface since this avoids the possibility of

the wheel first striking the side of the nib due to an error in judgment of
distance.

USE OF THE STEADYREST

The use of the steadyrest requires restraint. In ordinary use, the under
bearing is brought up snugly against the work while the front bearing rests
lightly, but without play, against the work. Too much pressure on the latter

bearing will make the work grind small.

The number of rests to be used depends on the work to be ground.
Naturally a long slender piece of work will have a greater tendency to spring
than a short stubby bar. No set rule may be laid down for the number of

rests to be used, as the depth of the grind also must be taken into
consideration.

WORK LOCATION

The first thing to do in locating the work is to set the headstock and

footstock for the length of the piece to be ground.
anywhere on the table, but it is better practice to have the center of the
workpiece come approximately over the center of the table in order to
equalize the taper adjustment. Next true the grinding wheel, and then

These can be set

take a light cut across the work.

ADJUSTMENT FOR TAPER

Check the workpiece to determine exactly how much stock is to
be removed and also to find out what taper adjustment is necessary. After
making this adjustment take another light cut. Experience will teach how
much adjustment to make to overcome a known taper.

32

WHEEL SELECTION

The selection of a grinding wheel is influenced by many factors and
naturally a manual of this nature can give only suggestions on a proper
choice. However, the operator or shop foreman is urged to exercise
intelligent discrimination in making his selection. Not only will production
and the quality of work be affected by the use of proper wheels, but wheel
expense itself, an important item, is seriously influenced by such selection.

There is a NORTON wheel for every grinding need. Hundreds of
combinations of grade, grain, and bond are available, and a good general
rule in wheel selection is found in "The harder the steel, the softer the
wheel. " (There are, naturally, exceptions to this rule. )

ALUNDUM* ABRASIVE

ALUNDUM* is the trade name for NORTON COMPANY’S aluminum

oxide abrasive wheels. They are most suitable where the work to be

ground is of steel or a steel alloy. In fact, these wheels are adaptable

to the majority of cylindrical production work.

32 ALUNDUM* AND 38 ALUNDUM* ABRASIVES

For extra sensitive steels, it is suggested that a wheel made of 32
ALUNDUM* Abrasive or 38 ALUNDUM* Abrasive be used since such a

wheel has less tendency to burn the work.

57 ALUNDUM* ABRASIVE

57 ALUNDUM * Abrasive is another member of the NORTON family of
ALUNDUM* Abrasives. Its grinding characteristics are intermediate between the
tough regular ALUNDUM* Abrasive and the friable 32 or 38 ALUNDUM* Abrasives.
Hence, it is an ideal abrasive for general purpose grinding on denser and harder
alloy steels where stock removal is normal and corner wear is not a factor.

*

CRYSTOLON* ABRASIVE

CRYSTOLON* wheels, of a hard, sharp abrasive, are best suited for

grinding cast iron, non-ferrous metals, non-metallics and certain exceptionally
hard materials. This category includes rubber, soft brasses and bronzes,
aluminum, copper, glass, and the cemented carbides.

FACTORS AFFECTING SELECTION

Knowledge of the material to be ground alone

, however, is not sufficient
basis for proper wheel selection, especially in high production work. Other
factors such as the area of contact between the wheel and the work, the type

and condition of the grinding machine itself, wheel speed and work speed, are
all important .

‘

Trade Marks Reg. U.S. Pat. Off..

33

Obviously, with such a variety of factors to be considered, expert

guidance may be required in making the proper wheel selection, and to this
end it is suggested that a NORTON COMPANY wheel representative be

consulted wherever possible.

INDEX SETTING ... WHEEL WEAR

, When the machine is grinding straight within the established limits of

the piece, again determine the amount of stock to be removed and set the index

accordingly.

When the piece has been reduced to the size for which the

index was set, again check the piece itself with a micrometer or gage and, if
necessary, make a correction in the index setting and reduce the piece to size.
If there is much stock to be removed, or if the grinding wheel is too soft for

the job, you will probably find that, due to wheel wear, the piece will be
somewhat oversize. Wheel wear, of course, cannot be avoided but by the
selection of the correct wheel and removing only the few thousandths

ordinarily taken off in finish grinding there should not be enough wear to

necessitate a change in index setting in grinding only one piece.

WHEEL BALANCE

Unless the grinding wheel is correctly balanced, good work cannot
be produced. Because a grinding wheel was correctly balanced when it
was full size does not necessarily mean it will be in balance after being
reduced in size.

CENTER EXAMINATION

Examine the center points frequently to see that they are not scored.
Also, be sure the center holes in the workpiece are of sufficient size and that
they are clean. If the center holes have become damaged, good work cannot be

produced. If the headstock or footstock centers are removed, always be
sure to wipe out the spindle before reseating the points.

Also inspect the center shank to be sure it is free of nicks or specks of
dirt. A tiny grain of dirt on a center will prevent its seating properly and
cause unsatisfactory work to be ground. A poor condition of the centers or

the center holes is the most common cause of poor grinding.

GRINDING COMPOUNDS

A satisfactory grinding solution may easily be made by filling the
machine's tank with water and adding a can of grinding compound, approximately
five pounds. A thinner proportion may be used at the discretion of the operator.

34

Other kinds of compound may be used in this machine. Soda compounds,
especially in hydraulically operated machines, are not recommended since they
have a tendency to create a film which causes sticky valves. This leads
to faulty machine operation. In general the coolant mixture should be just

rich enough to prevent rusting the machine.

CLEANING

The machine should be cleaned regularly. Despite a built-in settling
tank, grit and metal particles have a tendency to "float" in the coolant,
which may mean recirculation to the possible detriment of the ground finish.
A filter may be used to good advantage.

SPINDLE SPEED

NORTON grinding machines are built to provide a surface speed of

5500 to 6800 feet per minute to the grinding wheel. As the wheel wears, this
surface speed, of course, is reduced and the wheel action becomes noticeably
different. The wheel will act softer and more frequent truings will be required
in order to obtain the desired finish.

WHEEL SPEED CHANGES

The wheel spindle is driven by vee belts directly from a motor which is

adjustable and mounted on the rear end of the wheel slide. When the standard
diameter wheel is worn down appreciably, the surface speed has diminished to
such an extent that the efficiency of the wheel is very low. Appropriate
sheave changes may now be used so as to re-establish, as nearly as possible,
the proper wheel surface speeds (with no change in belt length).

WORK SPEED

It is necessary for efficient grinding to establish the correct work and

traverse speeds.

The work speed will depend on the nature of the material,
the wheel being used and the finish required. In general, the work speed and
the traverse speed should be the fastest possible and still obtain the desired
results. Increasing the work speed tends to make the grinding wheel act

softer.

TRAVERSE SPEED

The traverse speed should be adjusted when rough grinding so that at

each revolution of the work the table will advance a distance somewhat less

than the width of the grinding wheel. For finish grinding, the table speed

is greatly decreased.

Here again, only experience will teach an operator

what work and table speeds to use.

35

VIBRATION

Vibration in a grinding machine is one of the chief causes of difficulty

and precludes all chance of obtaining a good finish. Occasionally the source

can readily be located but at other times its origin is very obscure.

Vibration is traceable to many things. An out-of-balance wheel will
produce a pounding noise and show up in the work surface. Too hard a wheel
will also cause chatter marks. If the spindle bearings have been abused or

subjected to severe service, they wear excessively and good work cannot be

produced.

An out-of-balance motor armature can be the cause of vibration, and

it is for this reason that NORTON COMPANY prefers to supply motors with
machines. The armature of every motor used is removed and checked for
balance before mounting.

BLEEDING

If a machine has been idle, it may be necessary on start-up, to n bleed"
the table cylinder to remove air. Open the bleeder valve at each end of the
cylinder by shifting the valve pin. Run the table by hydraulic power, then close

the valves when proper table action is obtained.

36

GRINDING HINTS

Before mounting work in the machine, see that centerpoints

and center holes in the work piece are clean.

Lubricate the center holes with a good grade of commercial

center lubricant.

See that center holes in work piece are not damaged, rough,

or out of round.

If head and footstock centers are removed, wipe out spindle

hole and clean center shank before replacing center.

Do not move headstock or footstock until the table has been

cleaned.

Always clamp the driving dog securely to the work.

Adjust the driving pin in the face plate so that it engages the

driving dog securely.

Use plenty of coolant of the proper type and consistency for the

work being ground.

Adjust the coolant nozzle so that the coolant stream falls on

the work at or above the point of grinding contact.

Keep the machine clean and properly lubricated.

37

CROSS FEED SCREW

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DESCRIPTIVE OPERATION — DEEP GROOVE OR SHOULDER GRINDING

Wheel Slide Retracted

1.

ATTACHMENT (1M

Maximum Movement)

Solenoids S^ and S2 are de-energized and so the wheel slide piston is in
the back position and N. O. body feed solenoid valve S2 is open. In
addition, the shoulder feed valve piston is in contact with the end cap C

and port P is open to atmospheric exhaust.

2.

Wheel Slide Rapid Traverse Forward

Pulling the wheel slide lever forward,

energizes S^ and S2 simultaneously
which closes port P2. At the end of the preset slide rapid traverse
movement,

nut N contacts the end of the shoulder feed valve piston and a

further movement closes port P.

3.

Shoulder Feed Movement

With port P2 closed, the oil is trapped so that the wheel feed piston
cannot move and the only wheel slide movement at this phase is due to

the shoulder feed which continues until the wheel slide piston contacts
the cylinder end cap. This terminates the shoulder feed.

Body Feed

4.

Simultaneously with the shoulder feed termination,

Dog D contacts LS2
which de-energizes S2 and opens port P2. Now the wheel feed piston is
free to move to the right and the body feed starts.

Shoulder Feed Setting

5.

Back off nut N.

a.

Bring the slide forward under power until the piston contacts the

b.

end of the cylinder.
Turn

in

c.

Adjust dog D to de-energize solenoid valve S2.

d.

Retract the wheel slide.

e.

Turn the nut N a distance equal to the desired shoulder feed plus 5/32".

f.

Close valve V and adjust shoulder feed by means of valve shown.

g.

nut N to contact the end of the shoulder feed valve piston.

(The backlash is compensated for at the start of the rapid traverse
movement).

Note

In order to make the attachment inoperative open the shoulder feed adjustment
valve and valve V.

The above setting applies to the nut N arrangement

only. With the newer
design the setting is direct reading of the desired shoulder feed on the
scale. Item 11 g

M however, will apply in either case.

39

SE-343B

40

NORTON WHEEL HEAD MOUNTED

AUTOMATIC TRUING DEVICE

A - Solenoid Valves

B - Speed-up Valve

C - Right-hand Speed-up Dog

D - Left-hand Speed-up Dog

E - Limit Switch

F - Diamond Picker Feed

Ratchet

G - Ratchet Crank Actuating

Adjustment (Right-hand)

H - Ratchet Crank Actuating

Adjustment (Left-hand)

J - Adjusting Stop Screw

(For right-hand

movement

of main hydraulic piston)

K - Booster Cylinder*

L - Diamond Holder

M - Main Form Bar

N - Main Form Bar Follower

O - Booster Bar Follower*

P - Detent and Ratchet Lock-out

R - Diamond Manual Adjustment

Handwheel

S - Rise Index Bar*

T - Booster Bar*

U - Booster Limit Switch*

V - Auxiliary Speed-up Dog

(For two-wheel setup only)

W - Adjusting Screw - Rise

Index Bar

*These

the truing operation requires

parts are furnished only when

addition
of the Booster Arrangement to the Device,
and this is when the truing action involves
horizontal

and vertical traverse of the

diamond tool.

41

SECTION VII WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE (Optional)

It is imperative, as is the case with any device of this type, that

it be used properly. For this reason we urge the close attention

of the operator and maintenance

personnel to this section.

Operation

To start this device, the Operator actuates the push

button labeled "Truing Start" which is located on the electrical

control apron on the front of the machine.

valve "A" which is shown in the drawing on page 40.

energizing of this valve allows pressure

This energizes solenoid

The

oil into the left-hand

side of the truing slide hydraulic cylinder for movement of the

slide.

At the same time, oil on the right-hand side of the

cylinder exhausts through speed-up valve "B" and through the

needle valve which is mounted on the rear of the device.

Fast Traverse

When the diamond truing tool moves from its rest

position, the right-hand

speed-up dog "C" depresses the speed-up

valve plunger to allow the exhaust oil to flow freely through

speed-up valve "B. " This gives the truing slide a fast traverse

from the rest position of the diamond tool to the edge of the

grinding wheel. On reaching the wheel, the speed-up dog rides

off the plunger and closes the speed-up valve "B. " With this

valve closed, the exhaust must pass through the needle valve which

gives the required truing speed to the tool slide.

42

Fast Reversal

When the diamond reaches the opposite edge of the

grinding wheel, the left-hand speed-up dog "D" depresses the

plunger which again opens passage through the speed-up valve

" B, M and the slide goes through fast reversal back to the edge

of the grinding wheel. The reversal is accomplished by the

truing slide actuating limit switch "E" which is mounted on a

slotted bar fastened to the top of the mechanism. This action

de-energizes the solenoid and reverses the hydraulic pressure

from the left-hand to the right-hand side of the truing slide

cylinder. Oil on the left-hand side of the cylinder now exhausts

through

the speed-up valve nBM and through the needle valve.

Automatic Down-Feed

At the end of the first pass, while the slide is

going through its fast reversal, diamond picker feed ratchet

"F

M is actuated by ratchet crank actuating adjustment n

G. 11

This gives diamond holder "L" the desired amount of automatic

down-feed. (See 11 Adjustments" on Page 44). At the end of the

return pass, the diamond picker feed ratchet "F" contacts

ratchet crank actuating adjustment "H" which feeds down the

diamond.

The slide then comes to rest and is set for the next

truing operation. The Operator now brings the wheel forward

by means of the wheel feed handwheel the amount necessary to

compensate for the reduction in wheel diameter.

43

ADJUSTMENTS

Vertical Adjustment of
Diamond Holder

This adjustment is made by Handwheel M R. "

Position of Slide at Rest

This position is set by adjustment of Adjusting Stop

Screw 11

J. M

Distance of Fast Traverse

The distance of fast traverse from the rest position
to the edge of the grinding wheel is determined by the location
of right-hand Speed-up Dog "C, "

Truing Speed

The truing speed is controlled by the needle valve

mounted on back of the device.

Distance of Fast Travel
at Reversal

This distance is determined by the location of the

left-hand Speed-up Dog n

D. 11

Point of Reversal

This point is determined by the location of Limit

Switch "E. "

Amount of Down-Feed

The amount of automatic down-feed is controlled by
Crank Actuating Adjustment "G" on the right-hand side and by
nHM on the left-hand side.

Slide Motion - Horizontal Plane

To adjust the slide in the horizontal plane use the

lugs cast integral with the hydraulic cylinder and the adjusting

screws on the back of the device at both ends of the cylinder.

44

INSTRUCTIONS FOR SETTING UP (Refer to Drawings on pages 40 and 66)

Check gib (61) for tightness.

1.

After gib is secure,

2.

adjust tool slide (27) by loosening all adjustable
rollers (51 and 52). Tighten top right and two bottom front adjustable
rollers until slide is firm in front to back plane, but rolls freely; then
check and lock. Next, set top left rear roller until in firm contact and
lock by set screw on top. Adjust top left front roller to firm contact:

then check and lock. Adjust side rollers

on

left side until contact is
firm, but free rolling action is maintained; then check and lock. The
slide should now move freely but without play.

Straighten table by indicating

3.

Place form bar squarely on bracket and spacer (36 and 40) and seat

4.
securely.

Position form bar by first loosening clamp screws in bracket and

5.

Be sure form bar is up against tool slide (27).

or

grinding a straight bar.

spacer (36 and 40).

Adjust nuts on screws (44) so that shape of form bar rests in proper

6.

position on wheel.

Reclamp all nuts and screws.

7.

Retrue wheel.

8.

Grind and check for straightness.

9.

If taper exceeds . 001", loosen the four binder screws on the back of the

10.
truing device.

Then, pivot the truing device by means of the taper

adjustment screws, ("A" for taper, "B" for binder screws).

Note: If taper is within . 001M, final adjustments should

be made by slight movements

Stroke of diamond should be set to clear edge of grinding by approx.

11.
Screw (42) adjusts left-hand

end of stroke.

of

the swivel table.

Limit switch (E) adjusts

right-hand end of stroke.

After preliminary truing, remove follower (N) and diamond holder (L)

12.
with diamond in place. Then, stone follower to same shape as diamond
in order to produce correct shape or radii on grinding wheel.

1/8".

45

Picker feed is set by adjusting ratchet crank knockout (15) on

13.
right side and ratchet feed bracket (18) on left side.

Pawls (96) should engage in gears (75 and 77).

14.

Be sure ratchet lockout (P) is secured in ratchet (114).

15.
Graduations on handwheel denote amount of picker feed.

MAINTENANCE

Maintaining Accuracy

To maintain accuracy of truing, the rollers of the

Wheel Head Mounted Truing Device must be kept tight. The dove

tail gib must be adjusted to give a snug sliding fit on the ways.

Lubrication

Oil the rollers and ways frequently to obtain the

maximum efficiency of the device.

46

SECTION VII.

PARTS

Page

Headstock - A. C
Headstock - D. C

Footstock

Wheel Guard and Parts
Wheel Slide and Parts

Reciprocating and Shoulder Grinding Attachment
Cross Feed Cylinder
Wheel Feed Apron
Feed Screw and Parts

Combination

Push Button Apron and Cycle Control Mechanism

Table Traverse Cylinder
Table Control Valve

Main Control Valve Parts
Hand Traverse Apron
Diamond Tool Holder and Steadyrest

Table Control Valve (Newer Unit)
Main Control Valve Parts (Newer Unit)
Wheel Head Mounted Automatic
Booster Mechanism - Automatic

Tool
Combination

....................................................................................

Slide Cap - Tool Slide

.....................................................................

.....................................................................

.................................................

......................................................

.......................................................

............................................................

.......................................................

Valve

Valve (Newer Unit)

............................................................

..................................................

.......................................................

.............................................

.......................................................

..............................

Truing Device .

Truing Device

.............................................

..............................

....................

....

48

49

50
51

52
54

55
56
58

59
60
61

62
63

64
65

66
67
68
72

74
75

Footstock (Newer Unit)
Wheel Feed Cylinder (Newer Unit)

Knife Edge Metering Valve
Endwise Locator Parts
Wheel Slide and Parts (Heavy Duty Machines) . .

Please specify the FULL PART NAME and the MECHANISM for

which it is required.

Please give the MACHINE SERIAL NUMBER with every inquiry or order.

.......................................................

.........................

.............................................

..................................................

47

76
78

79
80
84

1

vA

CO

lO CTU ISO

>0

CTU

IO CTU l 0 2 - Eccentric Cap

IO CTU

IO CTU

l

I © 3 -

1©*^ "Ball Bearings(2)

” Drive Sha^t"

8

l - (Drive Sha-ft-

Eccent-ric 0a I ij

Bearing Sleeve

lO CTU 1 85-Washer (2)

IO CTU ISS-RacK

IO CTU 1 07 -

Drive Sheave

IO CTU l 88

^lOCTU 189 -Body

%\<D CTU l 90- End Cover

IO CTU 1 9 1 - WorK Drive Plated
IO

CTU

IO CTU 193-HeadstocK

IO CTU 1

-Vee Belt-s(S) \

192-Ball Bearing

Retainer - Smal l

9*4 - Washer (*41

Pinion —

Sheave

____

X

------

m

Motor Shaft

AC ARRANGEMENT

I

IOCTU 1

Motor -Bose.

FOOTNOTE

^Thzse2 parts are. attached

♦These 2 parts are attached

97

IO CTU 200- Clamp (2 )

410 CTU 207-ClampingBoli"(2)

4 IOCTU 209-

U 195" Motor

J

■^LlO CTU 202- Ball

0 CTU 2 08-Grease Seal (21

U !96-V(zeBelt

IO CTU 2 01

Bearing Retainer-Large

\IO CTU 2 03

IO CTU 20-4- Pin

205-Ball

Sheave

IOCTU 210-

PI u g <gi

wi-tchi ©Heave,

IO

CTU 200-

rive SHeave.

-Spindle

“ WorK

Sheave

Bearings (2.)

Clamp Nut" (2)

SE-668-A

SE-669-A

4^-
C

, - „

. v x

10 CTU 211 -

Mo+or

Sheave

\ 10 CTU 21 2 -Motor

Sheaves

Sheave

D

PLATE 2

DC ARRANGEMENT

SE-672-A

IOCTU 360

10 CTU 361 -Spring Wire,
10 CTU 3 6 2 - Spind I e_
10 CTU 36 3
10 CTU 3 6 4 " Cc.ni-e.r_ __

10 CTU 365
10 CTU 3
10 CTU 367 -Bellows Rind
10 CTU 3 68 " Bel lows
IOCTU 3 6 9-

-Foo*fsi"ocK

Plain

-Water

6

6-

Bel lows Insulator,

D.T.H. Support

Cap_

___
Hand le

______

Lever.

_______

_____

_____

Pin

10 CTU 3 7 4
10 CTU 37 5 -

IOCTU 376-

Eccentric

10 CTU 37 7 -

Spindle

IOCTU 3 7 8 -

Lever 5-tud-(-__J

IOCTU 363 -*3 \ 7

N

\Plain

Eccentnc

Sleeve

Lever

Handle)* lx*

___

ii

j

Shaft

V

Housing

IOCTU 379 - FootstocK

//

\

v.

Body

CO

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(0)

U

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VAdOCTU 370 - L
—

10 CTU 371-Spindle Clamp Rod

—

IOCTU 372 -RacK Pinion

IOCTU 3 7 3

-Knob

ock

Pin (2.1

/•

\
ClO CTU 380-LinK

x

10

10 CTU 3 8 3-

IOCTU 3 8 4 - S pi nd l e Ca p

IOCTU 385-Body

^10 CTU 38 6-Spindle Clamp-Front
i 0 CTU 38 7-Pin

^10 CTU 388-Pinion

xIOCTU 389-Spindle Clamp-Rear

X

I0 CTU 390-Clamp (2 )

\I0CTU 391-Clamping Bolt (2.)

~

10 CTU 39 2-Body

\I0 CTU 3 9 3 -Body
IOCTU 39 4 -Washer

lever crank typf

l0 CTU 381 -Pin

CTU 382-Spindle

Cover

Cover

/

Spring

Spindl e Si-op Col lar

GjasKet

(2)

FOOTSTOCK

SE-676-A

PLATE 3

SE-677-A

cn

IOCTU 151- Pm__________
10 CTU 152-Wheel Quard

Cover

-----------

IOCTU 155-Upper BracKet

m

IOCTU l56-lMQate Valve
10 CTU 159-Stud
IOCTU 157-Wheel (quard
IOCTU 160-Swivel Joint-Short

IOCTU 161-Shoulder Stud

IOCTU 158-Lower BracKet
10 CTU 167-S-tud
10 CTU 1

63-

Walter Spout

•**10 CTU 153-Balance
Weigh-h

*10 CTU 154-Screw

(^■Attached

-------------

________

Parts)

^lEEL

GUARD £ PARTS

PLATE 4

IOCTU 16 4-Wheel Sleeve
IOCTU 165-Wheel Flange

IOCTU 166-Mist Quard

SE-666-A

SE-667-A

IOCTU 100
10 CTU 103
10 CTU 102

IOCTU IOU
10 CTU II4>
10 CTU 11 3

n

___

IOCTU 117

___

IOCTU 118

IOCTU 142

IOCTU 143

IOCTU 144

IOCTU 145

IOCTU 146

IOCTU NO

JO CTU 140

IOCTU 127

CJi

CO

IOCTU III,-
IOCTU 112-
10 CTU 105
IOCTU 139

IOCTU 115

10 CTU 116

10 CTU 119

10 CTU 120_

10 CTU 122

10 CTU 121

10 CTU 126

10 CTU 125

10 CTU 108

10 CTU 109

10 CTU 138

WHEEL SLIDE & PARTS

IOCTU 133

IOCTU 134

IOCTU 136

IOCTU 135

IOCTU 137

IOCTU 141

-10 CTU 128
10 CTU 129

10 CTU 123

10 CTU 130

10 CTU 131

10 CTU 132

SE-758-A
SE-759-A

WHEEL SLIDE AND PARTS—PART NAMES

CJi

oo

10 CTU

100

101

102

103

104
105

107
108
109
110
111

Shoulder Screw
Restricting Arm
Washer

Connecting Link
Safety Arm Lever
Wheel Slide Cover (Left)
Thrust Yoke Stud
Fixed Thrust Bracket

Pump Drive Shaft
Lubricating Pump Bracket

Hood Clamp

Part Name

112 Stud
113

Oil Thrower

114 Spindle Box Nut (Outer L.H.)

115

116
117

118

119

Spindle Box Case (Large)
Thrust Yoke

Spindle Box Nut (Inner)
Spindle Box (Large)

Thrust Shoulder Ring

120 Thrust Ring

121 Wheel Slide
122

Thrust Ring Stud (Upper)

123 Spanner Nut

10 CTU

Part Name

124 Pump Worm

125
126

Thrust Ring Bushing
Thrust Ring Stud (Lower)

127 Wheel Slide Cover (Right)

128
129
130

131
132
133
134

Spindle Belt Guard
Worm Gear
Wedge Bolt (Long)
Spindle Box Case (Small)
Oil Tube
Wheel Sleeve Washer

Wheel Spindle

135 Spindle Box (Small)

136

Spindle Box Nut (R.H.)

137 Spindle Sheave

138

Sight Glass Retainer
139 Locking Ring
140 Cover
141 Vee Belts

142

Filter
143 Holding Plate
144

Check Valve Gasket

145

Valve

146

Manifold

'OCTU 225- Control Lever Shaft

10 CTU 226
lO CTU 227 “
'°^

Tu 2 28

'^CTU 229-
*^CTU 2 3 O
‘

OCTU

23

-Taper Pin (h)

Indicator Suppor

’ St'd. Straight

Adj ustind

- Arm

I-

_______

Spring.

____

p\

,0

pyu 24-3 - Lever End

244- Sprind

n

JOCTU 245 - Bzorind
^lOCTU 240- Cam

'OCTU 24“7~ Pin

'°CTU 24B-Adjusting Screw

/'O CTVJ 249‘Hirust YoKe

\

Stud

CTU 232

1Q

CTU 233-Wheel Slide

CJl

vL

j

‘

OCTU 235-Thrust YoKe Pin

‘

OCTU 2

‘

OCTU 2 37-Thrust Ring

‘

O CTU 2 30-Thrust YoKe BracKet/

‘

O CTU 2 39 - Spring Pin (2 )

‘

OCTU 2*4-0-

lOCTU 24-

-Control Lever

IO CTU 234'Norton

36-Thrust YoKe

Stud (

Connecting Rod^

1 - Spring

lOCTU 24-2

” Thrust Ring

Knob

__

Upper

Stud (Lower)

)

__

_________

CTU 250- Adjusting

. •

---------------------

\lO CTU 251-Eccentric Cap

^""iO CTU 25 2-

x,

0 CTU 253-Eccentric

-iO CTU 2 54-Thrustwasher
IO CTU 255*

IO CTU 256 “
‘

O CTU 2 57-

lOCTU 250-

• —

lOCTU 2 59-Oil Pump Body

1—lOCTU 2

-----

lOCTU 2 61-Oil Pump Cap

-----

/

lOCTU 262- Pump Qear*

— Screw N

Drive Collar

ut

Lubricating

Pump BracKet

Worm Qear

Pump Drive Shaft

OiI Pump Spacer

60-PumpQear-idler

Driver

RECIPROCATING K SHOULDER GRINDING ATTACHMENT

PLATE 6

SE-670-A
SE-671-A

. <

CJi

cn

10 CTU 1000-Piston RacK Pinion
10 CTU 1001 -Tru-Arc Ri ng
10 CTU 1002-Taper Pin

_________

__________

10 CTU 1003-Piston RacK Pinion

Bushing - Outer.

___
10 CTU 1004-PacKing Supporting Ring
IOCTU 1005-Vim PacKing

IOCTU 1012 - lnte.rnai Clutch

10 CTU 1013 - CluTch

Cq<zar

IOCTU 1014 - Ball Bearing

/

IOCTU 1015 -

Ball Bearind

<3<zar

IOCTU 1016-Pisfon
IOCTU 1017-Cylinder BracKet
10 CTU 1018-Spring

10 CTU 1006-Taper Pin
IOCTU 1007-Cylinder End Cap
IOCTU 1008-

QasKeT

_________

10 CTU 1009-PacKing Supporting Rind
10 CTU 1010-End Cap
10 CTU 101

1-Laminated Shim

______

NOTE

See Page 78 for
Newer Design

IOCTU 1021-CluTch Shaft-

IOCTU 1

10 CTU 1

IOCTU 10 2 4 - By Pass Body

CROSS FEED CYLINDER

PLATE 7

10 CTU 1019 -Pinion

IOCTU 1020-Ball Bearing Cap

022-

Pisfon

023 O Ring

SI-76Q-A
SE-761-A

10 CTU 1025

10 CTU 1026
10 CTU 1027
10 CTU 1028
10 CTU 1029

10 CTU 1030
10 CTU 1031
10 CTU 1032
10 CTU 1033

10 CTU 1037
10 CTU 1038
10 CTU 1039

10 CTU 1040

10 CTU I04J
10 CTU 1042
10 CTU 1043
10 CTU 1044
10 CTU 1045
10 CTU 1046
10 CTU 1047
10 CTU 1048
10 CTU 1049

cn

CT)

10 CTU 1034
10 CTU 1035

IOCTU 1036

H ©

10 CTU 1050

10 CTU 1051

10 CTU 1052

10 CTU 1053

\I0 CTU 1054

^\l0

CTU 1055

'^10 CTU 1056

*\I0 CTU 1057
^10 CTU 1058

-10 CTU 1059

10 CTU 1061

10 CTU 1062

110 CTU 1063

no CTU 1064

10 CTU 1065

10 CTU 1060

WHEEL FEED APRON

SE-762-A

PLATE 8

SE-763-A

WHEEL FEED APRON—PART NAMES

cn

-a

10 CTU

1025 Stop Block
1026 Index Gear
1027 Collar

1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043

1044
1045

Clutch Lever Bushing
Torrington Needle Bearing
Feed Screw Shaft
No. 1 Machine Handle
Clutch Lever
Wheel Feed Apron
Pawl Lock
Spring
Stop Arm Stud
Handwheel Bushing
Handwheel Stud
Wheel Feed Index Handwheel
Clutch Spool Seal
Sleeve—Short
Spool
Pinion Spring

No.

4

Locking Ring

Part Name

Machine Handle

10 CTU

1046 Hub Cap
1047 Detent Ratchet
1048 Detent Ratchet Housing
1049 Index Bushing—Short
1050 Shoe
1051 Bell Crank
1052- Bell Crank Bracket
1053 Detent Plunger
1054 Bell Crankshaft

1055 Spring
1056 Feed Screw Gear
1057 Apron Cover (L.H.)
1058 Stop Arm
1059 Detent Insert
1060 Screw
1061 Knob
1062 Index Pinion
1063 Pin
1064 Detent Plunger
1065 Spring

Part Name

10 CTU 2074 -Adjustment Stud

10 CTU 2075 -Washer

/ 10 CTU 2076 -Spring

CJl
CO

/ / 10 CTU 2077 -Solenoid Bracket

/ / 1

J/

lo

0 CTU 2078

/

Xl°

JO CTU 2079 -Cushion Plunger

CTU 2080-Cylinder Cushion Cap

10 CTU 2086-Valve Piston Spring

10 CTU 2087-Oil Seal
10 CTU 2088-Valve Sleeve
10 CTU 2089-Va l ve Pist'on

_______

10 CTU 2090-PacKing Support Ring-Inner
10 CTU 2091

-Vim PacKing (3)

__________

10 CTU 2092-PacKing Support Ring-Outer.

-Solenoid Stop BlocK

I0CTU 2081 - Cylinder
10 CTU 2082 - Piston

10 CTU 2083 - Cylinder Mead
!0 CTU 2084 - Pisi"on Rod
10 CTU 2085 -Piston Rod Sleeve.

A

10 CTU 2093

10 CTU 2094

10 CTU 2095-Ball Bearings (P.)

10 CTU 2096-Feed Screw (quide

10 CTU 2097
10 CTU 2098

10 CTU 2099-Oil WicK

-Oil Seal

-Piston Rod Support

______________

__

___

____

-Feed Screw Quide Arm

-Half Nut_____________
______________

II0CTU 2100 - Oil Seal

10 CTU 2101 "Feedscrew

10 CTU 2102

- Bal

I Bearing

10 CTU 2103 - Feed Screw

I0CTU

2104 -Oil WicK Strap

Sleeve

FEED SCREW 5T PARTS

SE-1006-A

PLATE 9

n"

SE-1007-A

/

z

10 CTU 5 64
10 CTU 540-End PIate
I0CTU54I -Lever
10 CT U 5 42 -Special Nut
I0CTU 54 3 - Compression Spring
I0CTU 544-Switch BracKet

-"O"Ring

______________

___________

________________

__________

10 CTU 565-Valve- Selector

I0CTU 552 -Wheel Feed Piston

I0CTU 553 -Valve Body

1

0 CTU 554 - Needle &ChecK

I0CTU 556-Valve

10 CTU 557-Cap

/l0 CTU 558- Selector
/lOCTU 559-Manifold

Valve Body

Valve Body

oi
CO

WORK 6T COOLANT

STOP-START

10 CTU 545-Push Rod /
10 CTU 55

10 CTU 5 4 6-

I0CTU 547-Lever

10 CTU 5
I0CTU 549-Knob
10 CTU 555-

I0CTU 563-Needle Valve Nut

1 -PicKer Feed Piston/

Piston-Left

________________

48-Piston-Right

Valve

------------

__

_____

UNIT

y

SELECTOR VALVE

1

0 CTU 560-VaIve

_10

CTU 561 - Adaptor

__

10 CTU 562 -Pin

COMBINATION VALVE

NOTE SE-6I4-A

See Page 75 for
Newer Design

PLATE 10

SE-6S5-A

■

CT5
O

IOCTU 520-Knob

____________________

IOCTU 510 -Operating Lever Extension

IOCTU 525 -Recess Cover
10 CTU 526 -Cjib Screw

___________

___________

_
IOCTU 512 -Switch Panel
10 CTU 513 -Opera-ting Lever
10 CTU 51
10 CTU 530 -Spring__
10 CTU 516 -Pin

1 -Operating Lever Suppor-t

________________

_____________

IOCTU 515 -Indicator Pin
10 CTU 514 -Instruction Plate
10 CTU 52 9 -Switch Plunger

________

__________

______

_________

IOCTU 5 18 -Operating Lever Button
10 CTU 527 -Spring

10 CTU 517 -Operating Lever Sleeve_
10 CTU 528 -Apron Cover-R.H.

________

______

\

.

■'rl

P

PUSH BUTTON APRON

CYCLE CONTROL MECHANISM

PLATE 11

SE-768-A

SE-769-A

- :

£3

CT)

10 CTU I 066

JOCTU 1067-Valve.
^_10

CTU 1068-Bleeder Valve 12)

~ 10 CTU 1069-Bleeder Valve

--------10

-I0CTU 1071 -Adaptor 12)

10 CTU 1082-Dowel Pin(4)\\
10 CTU 1083-Pin

-------------------------
10 CTU I084-"0" Ring PacKing
10 CTU 1085-Wiper Strip

10 CTU 1086-PacKing

---------

---------------

-'O' Ring

CTU 107 0-"O

Adaptor (2)

Ring PacKing

Body (2)

_I0 CTU 1072-Piston Rod
_I0 CTU 1073-Cylinder
_I0 CTU I074-"o" Ring PacKing

_ I0CTU 1075-Tru-Arc
_ 10 CTU 1076-Cylinder
_10 CTU 1077-Base
_10

CTU 1078-Piston

^ 10

CTU 1079
UlOCTU 1080-Seal
3Il0CTU 1081

-"O" Ring PacKing

-Special

10CTU 1097-Table

O

o

O

End Cap (L.H.)

Trough

(2)

Ring (<£>>

Screw (a)

Cylinder

(L.H.)

BracKet

10 CTU 1087-tie Rod BracKet
10 CTU 1088-Base Trough

(RH.)

12.)

-------

--------

10 CTU 1089-Cylinder End Cap (RH.)

10 CTU 1090-Tie Rod(2)
10 CTU 1091 - PacKing Qland (2.)

10 CTU 1092-Spanner Nut (4)

10 CTU 1093-Instruction Plat-e
10 CTU 1094-Stop Plate (2.)
10 CTU 1095

-Piston Rod BracKet

10 CTU 1096-Pin 12)

----------------------

--------

------------

---------

----------------

-----

-------------------------------

HYDRAULIC TABLE TRAVERSE

PLATE 12

CYLINDER

SE-865-A
SE-866-A

IOCTU 2000-Reverse Lever
10 CTU 20 01 -Reverse Lever Knob S+ud
10 CTU 2002 -Reverse Lever 5-top Pm
10 C TU 2 00 3

10 CTU 2004-Knob

-Reverse Lever
______

stud

____

%

_____

&

10 CTU 2015 -Start-Stop Piston r

IOCTU 2

IOCTU 20 I 7 - 5-tart-5-top Valve Cap
^lOCTU 20I8“"0 Ring (2)

^ I0 CTU 2020-Tru-arc Ring

0 I

6

- Table Control Valve

IOCTU 2 0 I 9 -"O'Ring (2.)

.10 CTU 2021- Manitold

10 CTU 202 2-5tart-5top Valve Sleeve

IOCTU 2023 - Start-Stop

Bumper

Body

Valve Piston

CT5
CO

10 CTU 2005-Halt Cap
IOCTU 2006-Needle Bearing
10 CTU 2 007-S1art-StopValve Cap Cover
I0 CTU 2008

I0 CTU 20

I0 CTU 20I0-Valve Spool (Z )_
I0 CTU 20 11 -Valve Spool Stud

I0 CTU 2012 -PacKing
I0 CTU 20 I 3 -mO" Ring Bushing_
I0 CTU 20I4-End Cover(L.H.l

-Valve Operating Lever

09-Pin (Z)

__________

(2J

7 /

_

NOTE

See Page 66 for
Newer Design

TABLE CONTROL VALVE

PLATE 13

IOCTU 2024-Table Reverse

Valve Sleeve

I0 CTU 2 02 5-Table Reverse Shuttle

Valve

I0 CTU 2 02 6

I0 CTU 2027

I0 CTU 2028-Tru-arc Ring
I0 CTU 2029-Valve
I0 CTU 2030-End Cover (R.H.)

10 CTU 20 3 I - Slow-down Valve Piston
I0 CTU 20 3 2 - Slow-down Valve Sleeve

-Table Reverse
Dwell Valve

-Table

DwelI Piston

Valve

Cap

SE-867-A
SE-868-A

r\

m

05
CO

10 CTU 2033-Needle

Valve Stem (A )

I0 CTU 2034-Needle

Valve Cap (*4-)

I0 CTU 2035-Instruction

Plate

10 CTU 2044-Valve Cap ( L.H.

I0CTU 2045 -"O" Ring (2)

10 CTU 2046-By-Pass Valve. Sleeve

10 CTU 2047-Pin

10CTU 2048 -Spring

10 CTU 2049-Valve Cap(RH.)
10 CTU 2050
10 CTU 2051 -By-Pass
I0 CTU 2052-O” Ring

I0 CTU 2053 -Knob
I0CTU 2054-Needle Bearing

I0CTU 2055

-By-Pass Valve

-Instruction

)

Shuttle

Pla-te

Body

(2)

I0 CTU 2036-Needle Valve Knob Body (2)

JO CTU 2037-Knob (2)

_I0 CTU 2038-Knob (2)

I0 CTU 2039-Indent Plate
I0 CTU 2040
I0 CTU 204l-0iler
I0 CTU 2042-Wire
I0 CTU 2043-Start-Stop Plunger

-Start-Stop

Lever

-----------

—

NOTE

See Page 67 for
Newer Design

l

MAIN CONTROL VALVE PARTS

PLATE 14

I0 CTU 2056 - Piston

Valve YoKe

1

0

CTU

2057 - YoKe

I0 CTU 2058-Start-Stop

Lever Sha-ft

Lever

SE-S69-A
SE-870-A

IO CTU -4-“7 o- Machine Handle..

lO CTu

IO CTU 499-

Bal

*47 i -Handwheel

I

Bearing

______

(

A

Z

y

IO CTU *472- Screw/ / \NJ X

05

IO CTU 473-
IO CTU *4-7*4--Bal I Bearing

Re-tainer Ring (Upper)

•O CTU *4-V5-BOII
IO CTU 50 0’Ball Bearings(2)

IO CTU 476-

IO CTU *4-“7”7-

IO CTU

Washer/

I O CTU

___

Brg.Cap

CluTch

Apron Cover

*4-7 © - Clui"ch (qear

*4-“7 9 "Shipper

___

\

Ty
/ A

/

___________

_____

____

ForK

J

0 CTU 498

'

^ CTU 4-80

1° CTU 4-QI - Boll

_ ^

1

0 CTu *^-©2.- Idler

IO CTu *4 © 3 - Idler

/ IO CTU 4-84-ldler Shaft*

/ ,*C CTU -4- © 5-

7 ' IOCTU486-BQ1I

f

7

($>

c

&

/

7

a

-

Ball

“ Pinion

Bearind

IO

JO CTU
IO CTU495*

IO CTU

\ IO CTU

\

IO CTU 502-Ball

Bearing

Shofi~

Gjear (Outer)

Qear (Inner)

Bal I Bearind

JO CTU 501-

IOCTU487-Plu<2

IO CTU 480"RacK Pinion

-

------------------------------
IO CTU 489"RaCK Pinion

-

--------------
IO CTU *4-9 O - Cylinder

v

------------------------------------

IO CTU

IO CTU ^-92-Spacing

\

----------------------------

CTU *4*93 “

49 6- Spring

4

cap (Upper)

Cap (Lower)

Bearing Retainer

Ring (Lower)

Bal l Bearind

_ Shaft

Spacing

*491-

Pis'ton Cushioning

494-R

PisTon

97- Hand Traverse

Bearing

Spacing

-- Co liar

Spring

qc

K Pinion

Apron

washer

Cap

Col lar

)

SINGLE SPEED HAND TRAVERSE APRON

PLATE 15

SE-680-A

SE-68I-A

MAIM M HJ.SA.

[C-QOOOO 1944-1

IMPORTANT

lOCTU-860>WorK Shoe Vertical

lOC.T U-856 Wrticd Shoe Holder—-/

IOCTU -859 WorK Shoe-Horizontal

IOCT.U - 855 Horizontal Shoe Holder//

IOC.T.U - 863 Adj Screw Bushing

IOC.T.U-858 Adj. Screw Vertical

-JOC.TU-861
^ lOCTU-854 Body Cover

IOC.T.U-B63 Adj. Screw Buehing

Knob

, IOC.T.U* 369 Knur ted Screw
S. IOC.T.U-

I

IOC.T.U

862. Clomp Lever

-857 Adj Screw Horizontal

IOC.T.U:

86 I Knob

/

SERIAL NUMBER MUST APPEAR ON EVERY ORDER

IOC.T.U-

C.T.U-840 Clomp Scr«w(Stud)

10 C.T.U. -03

— 'O CT.U-832 Tappad Bushing

6 Knob

068 Link Stu.d

IOCTU-

864 Body Clamp

IOCTU-

865"

IOC.TU

.866 Clamp Spring*

IOCT.U Q67 Li-nk

IOC.TU-

853 Steadyreit Body

—

Pivot Washer^

----------

STEADYREST TWO BEARING

05
Cn

£

/•*

—

&

IOCT.U.'

y^K

T

\L-" VIOCTU-

v

,0CTU ■

835 Link

833 Clomp Lever

830 Dla. Mounted in Nib

('

V?

I0CT.U-S26 Knob

_lOC.TU.-028 Clamp Screw CStud)

10CT.U:825 Dia.Tool HolderBody

IOC.TU.-829 Diamond ShanK

TOC.T.U--82.7 Knurled Screw

•r

IOCT.U.

-837 Link Stud./ // /

IOCTU:

838 Pivot Was her/ /

ioc.t.u

-834 Body Clamp/ /

IO.C.T.U-839 Clamp Spring/

IOC.T.U

-83

1 Dio Tool Holder Bod

y/

TABLE TYPE

6V

/T l

DIAMOND TOOL HOLDER

PLATE

16

■

V\JX.

FOOTSTOCK TYPE

SC-7

24-

SE-382-A

A

IOCTU 2 159
IOCTU 2160
IOCTU

IOCTU 2162

IOCTU 21 63
IOCTU 2 164
IOCTU 2 165
IOCTU 2 166
I OCTU 2 167

m IOCTU 2168

I OCTU 2 169

2 I 61

Stop Pin'
Knob Stud

#2 Bal I "
Check Nut

Screw ^
Reverse Lever
Valve Operating Lever
Hal -f Cap
Lever Stud-Solid

Tab Ice Dwel I Valve

Valva Spool -2

-------

------

OCTU 2 1 75
OCTU 2 I 76
OCTU 2 I 77
OCTU 2 I 78
OCTU 2 1 79

JO CTU 2 I 80

9

OCTU 2 181
OCTU 2 1 82

OCTU 2 1 83
OCTU 2 I 84

'O'Ri-

ng Pack ing-ty

Vai va S|

Val ve Pi ston
Man i {ol d

0 Ring Ret ainer

Pis ton Stop
Shutt I e Val va

End Cover-RH.
Val ve Cop
Duel | Val

a

eve

vq

I 0 CTU 2 170
I 0 CTU 2 171

IOCTU 2 172
I OCTU 2 173

I OCTU 2 174

SE-1059-A
SE-1093-A

Stud-Special
Packing Retainer

End Cover-LH. ^

S low Down Valve P i s ton

Slow Down Valve 51

e eve

TABLE

CONTROL

VALVE

OCTU 2 I 85
OCTU 2 186

OCTU 2 187
OCTU 2 I 88

Valve SI
Screw-2

V/asher
Bod

y

C2Y2

3

3

IOCTU 3001 Valve Body Gasket

IOCTU 2090 Needle Valve Stem Lg. f
1(3 CTU 2091 Needle Valve 5tcm-3

IOCTU 2092 Needle Valve Cap
IOCTU 2093 Needle Valve Cap -3
IOCTU 2094 Instruction

IOCTU 2095 Knob-2

Plate

I0CTU 3002 Yolk Lever.

IOCTU 3003 Start-Stop Shaft

IOCTU 3004 Instruction

0CTU 3 005

Knob

P I ate

SE. 1096-^

s z.)oc>z-n

10 CTU 2096 Knob-2
IOCTU 2097 Oi ler

IOCTU 2098 Start-Stop
IOCTU 2099 Wire

IOCTU 3000 Start-Stop Plunger

Lever_

------------------------

MAIN CONTROL VALVE PARTS

IOCTU 3006 Piston

IOCTU 3007 Indent Plato

Valve Key

03

co

109-®^*

49.,

107

CN

i

:

.97

} V J79

i

46

S.EIOI9-A

25-i

NORTON WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

©-43

Drrt« by KLRUTUi

10

/ir/si

\

NORTON WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

*

Code No.

1

2
3

4
5

7
8

9
10
11
12

o> 13
CO 14

15
16
17
18
19

20

21

22
23

24
25

26
27

Req

Identification

1 d.

1

4

1

2

1

36

1
1
1
1

3

1
1
1
1
1
1

1

1

2

1

3

1

3

1

4

1

Part Name

Cylinder Bracket
Screw - hex hd-3/8xl-l/2
Cylinder
Screw - hex hd cap-5/8x2
Spring
Screw

-

soc cap - 1/4x5
Valve Cap
Piston
Valve Rod
Front End Cap

Screw - soc cap-1/4xl/2

Switch Bracket
Nut - hex - 3/8
Tee Bolt
Ratchet Crank Knockout

Nut - hex -3/8
Tee Bolt

Ratchet Feed Bracket

Nut - hex - 3/8
Tee Bolt
Tee Slot Bar

Screw - soc cap-1 /4xl-l /4
Cylinder Bracket Key
Screw - flat hd mach-1/4x5/8

Thrust Plate
Screw - soc cap-3/8x3/4

Tool Slide

of

Parts on Drawing SE-1019-A

*

/8

Code No.

28
29
30

31

32
33

34
35

36
37

38

39
40

41
42
43
44
45
46
47
48

49

50
51
52

53
54

Req

1 d.

1

2

1

4

1
1
4
1
1

4

1

2

1

1

1

1
1
1

8

4

8

4
4

8
8

1
1

Part Name
Piston Rod

Nut - hex -5/8
Packing Gland & O-Ring

Screw - fil hd mach-1

0-24x1 /2

Packing
Cylinder Head
Screw - soc cap-5/16-I6pxl

Piston
Form Bar Bracket
Screw - soc cap-5/16-I6pxl
Form Bar Support
Screw - soc cap-3/8xl-l/4

Adjusting Block

Screw - soc cap-5/l6x5/8
Adjusting Screw Vertical

Nut - hex -1/2
Stud
Tool Slide Cap

Screw - soc cap-3/8x3-l /2

Tool Slide Cap Cover
Screw - rd hd mach-10-24x5

Bushing
Eccentric Short

Needle Bearing

Roller

Sleeve

Roller Guide

/16

* See Note at end of Listing on Screw Pitch.

(Continued on Next Page)

Identification of Parts on Drawing SE-1019-A

Code No.

55

56
57
58
59
60
61
62

63

64

65
66
67

68
69
70

71

-3
O

72
73

74
75
76
77
78

79

80

81
82
83
84

85

86

87

Req

1 d.

8

1
1
2
1

2
1
1

2

2

4

1

2

2

2

1
1
1
1

2
1
1
1
1

1

4

1
1

1

2
1
1
1

Part Name

Screw soc cap-5/I6xl-1/4
Roller Guide
Follower

Screw - soc cap-3/8x3-l/2
Key

Screw - flat hd 8-32x5/8

Gib

Gib Screw
Eccentric Stud
Dog - R. H. & L.H.
Screw - soc hd cap-5/I6xl-1
Steady Bracket
Screw - soc cap-3/8xl-l/2
Washer

Tapered Pin
Steady Finger
Screw - soc cap-5/I6xl-1/4
Spring
Nut
Spanner Nut

Gear
Pin
Ratchet
Ratchet Crank
Collar
Screw - soc cap-5/16x5/8
Sleeve Cap
Sleeve Bushing
Diamond Nib Holder
Screw - soc cap-1/4xl/2
Nib Holder Bar
Sleeve Bushing
O-Ring Packing

Wheel

Code No.

88
89
90
91
92

93
94

95
96

/4

97
98
99

100
101
102
103
104
105

106
107
108
109
110
111
112

113
114
115
116
117
118
119

Req

1 d.

1
1
1
2
1
1
1

2
2

1
1
1
1
1

1
1
1
1

1
2
1
1
1
1

1
1
1
1
1
2
1
1

Part Name
Wiper Gland
Diamond Nib
Spring Bracket

Screw - soc cap-5/I6xl

Pin
Spring

Pin
Spring
Short Pawl and Long Pawl

(Sold only in Pairs)
Shoulder Screw
Eccentric

Pin
Shoulder Screw
Ball Bearing
Spacing Washer
Eccentric Bushing
Stud
Spacing Washer

Pinion
Screw - soc cap-3/8xl
Plunger
Knob
Spring
Hand Wheel

Pin
Pinion Shaft

Index Gear

Handle
Bracket
Screw - soc cap-3/8xl-l/4
Screw - soc set-3/8x2-l/2
Screw - soc set-3/8x2-l/4

Bracket

.

A

/

Identification of Parts on Drawing SE-1019-A

Code No.

120
121
122
123
124
125
126

127
128
129

Unless ■

follows:

1/4-20,
5/8-11,

Reg* d.

1

2
6

1

3

1
1

1
1

2

otherwise specified, screw pitch is as

5/16-18,

3/4-10

3/8-16,

Part Name

Guard
Guard Guide

Screw - oval hd-10-24 xl/2
Mist Guard

Screw - rd hd-10-24x3/8

Form Bar (Mach. Serial No. Req
Washer

Screw hex hd cap-3/8xl
Limit Switch Stop

Screw - soc cap-1 /4xl/2

7/16-14,

1/2-13,

-1

/4

1 d.

iE t02OA

e

6

<\

NORTON WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

ULNMO

A.KIWO«MkN

Code No.

Reg

1 d.

Identification of Parts on Drawing SE-1020-A

Part Name

BOOSTER MECHANISM

Code No.

1 d.

m

Part Name

m

j

Reg

1

2

3

4

5

6

7

8

00

9

10
11

12

13

14
15
16
17
18
19

20

1

4

1

4

1

2

1

4

1

4

1
1
1

2

1
1

1

2

1
1

Booster Cylinder
Screw - soc cap-

3 /8x7 / 8*
Cylinder Cap
Screw - soc cap-l/4xl/2
Booster Bar Bracket
Nut - hex 3/8 - 24
Packing Gland
Screw - fil hd-10-24xl/2
Cylinder Head

Screw - soc cap-l/4xl

Mono-Pak Seal
Piston Rod

Piston
Index Bar
Screw - soc set-1 /4xl-3/4
Nut - check-
Booster Bar Bracket
Screw - soc cap-l/4x3/4

1/4

Screw - soc cap-1/4xl-3/4
Booster Bar

24

25
26
27
28
29

30

31

32
33

34

35
38

39

40
41
42
43
44

1

8

1
1
1

4

1

3
2

4

1

2

1
1
1
1
1
1
1

Junction Box Cover
Screw - rd hd-8-32x5/8
Gasket
Junction Box
Manifold
Screw - soc cap-3/4-24xl-l/2
Bracket
Screw - soc cap-5/16x2-3/4
Limit Switch
Limit Switch Screw
Booster Bar Follower

Screw - soc cap-

Lifting Lever
Stud
Roller
Pin
Locking Pin & Chain

O-Ring Packing

Dog (2-wheel setup only)

1 /4-28xl-l/2

* Unless otherwise specified, screw pitch is as follows:

1/4-20, 5/16-18,

3/8-16,

7/16-14,

1/2-13,

5/8-11, 3/4-10

NOTE

IN ALL PLACES.

E

£«xh1

O

* .

TRIC(J°)

^■*^) USED IN ALL PLACES

MARKED

^

V2/

IS USED IN ALL PLACES
MARKED B ON DRAWING.

ECCENTR.C STUD (63) IS USED

AS MARKED ON DRAWING.

W,TH

bushing

A ON

2 STANDARD DOWELL

drawing

.

172

o

^3

A

0

&

A

SE- 2080 B

TOOL

171

SLIDE CAP

TOOL SLIDE

RAhlD

3

/ZS/SS

PLACEMENT OP ROLLERS

AND BEARINGS, NORTON

WHEEL GUARD TRUING

DEVICE

IOCTU 3010 Gasket

l

L.H.l

IOCTU 3021 V

q

I

V(2 Body

IOCTU 301

IOCTU 3012 Push Rod

IOCTU 3013 Nut

ioctu

3014 P I ate

IOCTU 3015 Valve

i0CTU30i6End Plate

-J

at

1 p iston

I 2

)

JO CTU 3022 PI ston (

IOCTU 3023 Gasket

IOCTU 3024 Steel

Smal I ]

I RH.

Ball

ioctu

)

303

10 CTU 3032 Adapter

ioctu

3033 Selector

I 0 CTU 3034 0" R i no

1 Valve

Body

Valve Body

I 0 CTU 3035 va I VC

1

0

ctu

+

3o1

7 Lever1

IOCTU 3018 spri ng

ioctu

3019 Swi tch Bracket

IOCTU 3020 P iston

5.E. IOC3-A

S.E.I097-A

2) \

----

IL.H.I

10

ctu

3026 Truarc R i ng

IOCTU 3027

A

\

10 CTU 3028P iston IR.H.I

'

IOCTU 3029P in

O' Ring 14)/

^10 CTU 3036 Cap

IOCTU 3037 Truarc Ring

-—IOCTU 3030Mctcring Valve (21

COMBINATION

VALVE

,IOCTU-43

IOCTU-45/

IOCTU-26

IOCTU-44

I OCT U-30.

I OCT U

-46,

e

IOCTU-6

IOCTU-5,

TV;

I OCT U

I OCT U

-21,

\

IOCTU-3

v;

-7/

IOCTU-2 3,

IOCTU-2

-4

IOCTU-8

-IOCTU-9
IOCTU-IO

IOCTU-II

I0CTU-I2

IOCTU-13

IOCTU-31

IOCTU-32

03

■IOCTU-33

IOCTU-35,

—

\

s'j

m

‘

e &

w

m

IOCTU-34

IOCTU-36

4m

mr

I0CTU-40

i

/

/

I

i

i

i
l

x^iOCTU-l

IOCTU-36

w-M

fgUOCTU-25

>-IOCTU-28

JOCTU-37

0'CJ'IOCTU-38

JOCTU-42

I0CTU-4I

IOCTU-22

IOCTU-21

IOCTU-24/W^ 0-IOCTU-l4

I

I

I OCT U

-26

I0CTU-2Z

ml

SE-J540-A

SE-354I-A

FOOTSTOCK

JOB 13-13068

FOOTSTOCK - PART NAMES

10 CTU

1.

2.

3.

4.

5.

6.

7.

8.

^3

9.

10.

11. 35.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

PART NAME

Body
Handle Head
Pin ^
Oilite Bush (2)
Handle

Handle

Lock Pin (2)

Bearing

Bearing Cover

Bushing
Tru-Arc
Crankshaft
Cam Roller Follower

Bearing
Spring Adjusting Screw
Check Nut
Spindle Cap
Spring Adjusting Washer
Spring

Spring Retainer
Sleeve
Spindle
Oper. Lever Stud

Oper. Lever

10 CTU

25.

26.

27.

28.

29.

30.

31.

32.

33.

34.

PART NAME

Trunnion Block

Oilite

Bushing
Stud
D.T.H. Support Pin

Adapter
Stop Screw

Rubber Bumper

Handle
Spindle

Clamp Rod

Bushing

36.

37.

38.

39.

40.

41.

42.

43.

44.

45.

46.

47.

48.

Spindle Clamp (Front)
Spindle Clamp (Rear)

Adjusting Screw

Rack Pinion

Washer (2)
Clamp Bolt (2)
Clamp (2)
Water Cap
Bellows Insulator

Bellows
Center
Gasket
Cover

I0CTU-50 Cylinder

End. Cap (2)

JOCTU-62 Cylinder

BracHel

IOCTU-51 OH Seal

CO

IOCTU-52

IOCTU-53

IOCTU-54

IOCTU-55

PacKlng Support

Piston

Tube

Piston

IOCTU-56BaU Bearing Cap

—

L.H.

(6")

_____

Ring (2).

IOGTU-57 Spring

0

\lOCTU-58 Body Support

IOCTU-59 Valve

I0CTU-60

Body,

"d Ring

I0CTU-6I Body Cap (2)

'it.

-------

(2)

L '■

JOCTU-63 Packing Support

Cap

X

IOCTU-64 Cylinder

\

IOCTU-65 ''O* Ring

eg*?

(2)

(2)

(2)

\

»

f

$

*

-

9

#

\

#.

*

0

a

6

(2>

IOCTU-66 Tube R.H.

SE-4040-A

SE-4028-A

WHEEL FEED CYLINDER

s\

A

M

10 CTU 2064-Enclosure
10 CTU 2065-Spring l

10 CTU 2066-Valve

Retainer Plate

Screw

10 CTU 2067-Wire Spring

[a.

B

©

assembled

SINGLE VALVE

-^3
CD

10 CTU 2059

-Valve Pm

--------------------
10 CTU 2060-Valve Plunger
10 CTU 2061-Valve

10 CTU 2062-Valve

10 CTU 20 6

3*"o"Ring PacKmg-

Body-Single

Sleeve.

SE-992-A

SE-994-A

---------

--------

KNIFE

0

cp

©

ASSEMBLED DOUBLE

SEMI-AUTOMATIC MACHINE

\I0

CTU 2068-Valve

^10 CTU 2069-‘‘0"
10 CTU 20 7 0-Standard
) CTU 2071 - Wire Spring

CTU 2072-Keeper

EDGE METERING VALVE

10 CTU 207 3 - Valve.

m

[a

Ja

la.

b

$

Ring PacKing

Steel

Plate

Bod y-OoublC

VALVE

Ball

ORWG, BY H RAND

10

” CTU MACHINE 8/10/51

V FONTAINE.

CO

o

ENDWISE LOCATOR PARTS

~R4ND

/

1

/

/ ;

/

i

SE-3551-A

Code 1-39

ENDWISE LOCATOR PARTS

%

l

Code No.

1

2

3

4

5

6

7

8

9

10

Part Name

Pivot Cap

Washer

Ball Bearing

Indicator Lever

Spring (2)

Pivot Shaft

Indicator Pivot Support

Pilot Screw (2)

Key (2)

Pin

Code No.

21

22

23

24

25

26

27

28

29

30

Part Name

Base Bracket

Base Bracket

Center Screw (2)

Indicator Bracket (Lower)

Indicator Adapter

Indicator

Indicator Lever

Center Screw (2)

Ov. Point Set Screw

Stud

11

12

13

14

15

16

17

18

19

20

Height Stop

Shoulder Stop

So. Set. Screw

Wedge

Handle

Upper Pivot Bracket

Lower Pivot Bracket

Center Screw (2)

Wedge

Base Bracket Extension

NOTE

31

32

33

34

35

36

37

38

39

Stop

Spring

Adjusting Plate

Compensating Screw (4)

Needle Valve Stem (4) (Small)

Needle Valve Stem (Large)

Indicator Shoe

St'd. Knob (Black) (2)

Water Guard

When using these code numbers,

for the Endwise Locator

81

please specify that they are

1

Part No.

1-44

1-48

50-66

1-129
100-146
151-167
180-210

211-213
225-262

360-394
470-502
510-538
540-565
825-868

1000-1024
1025-1065

1066-1097
2000-2032
2033-2058

2074-2104

2059-2073
2090-3007
2159-2188

3010-3037

CROSS INDEX OF PART NUMBERS

Unit

Booster Mechanism

Footstock
Wheel Feed Cylinder

Wheel Head Mounted Truing Device
Wheel Slide and Parts
Wheel Guard and Parts

Headstock - A. C. Drive
Headstock - D.C. Drive
Reciprocating and Shoulder Grinding Attachment .

Footstock
Hand Table Traverse Apron
Push Button Apron and Cycle Control Mechanism .

Combination Valve
Diamond Tool Holders and Steadyrest
Cross Feed Cylinder
Wheel Feed Apron

Table Traverse Cylinder
Table Control Valve
Main Control Valve Parts

Feed Screw and Parts
Knife Edge Metering Valve

Main Control Valve Parts
Table Control Valve
Combination Valve

...................................................................................

........................................................................................

...............................................................

................................................................

..............................

...........................................................

......................................................

......................................................

......................................................

............................................

................................................................

.........................

................................................................

................................................................

......................................................

................................................................

.................................................

...........................................................

.................................................

......................................................

................................................................

.....................................................................

Page

72

76
51
68

52
51
48
49
54
50
64
60

59
65
43
56
61
62
63
58
79
67
75
66

.1

ii

ii

82

SECTION IX

10" TYPE CTU-HD AND 14

” TYPE LCTU-HD CYLINDRICAL GRINDERS

PLAIN OR SEMIAUTOMATIC

These machines provide capacity for grinding work that requires

larger diameter or wider wheels than the standard 10

M Type CTU or 14"
Type LCTU Cylindrical Grinders will accomodate. For this reason, they
have a heavier wheel slide with a larger wheel spindle and bearings.

In other respects they are similar to the standard machines.

This means that all of the foregoing information

and parts drawings apply

to the HD models except with respect to the wheel spindle unit.

However, wheel spindle bearings adjustment if eventually
required, should be performed as outlined on Pages 19 and 21. The
same caution is urged against promiscuous tampering with them unless
the need for adjustment is very definite.

The following pages contain a Parts Drawing of the HD Machine
wheel spindle unit. For avoidance of conflict,
parts code numbers is used.

It

will be seen that this is 14C2-.

a

different prefix to the

are required.

the machine.

Please use this prefix to the part code number if and when parts

In addition, please be sure to specify the serial number of

NOTE

On HD Machines, there is a pressure switch in the spindle

lubricant

supply line.

This provides an interlock that
prevents wheel spindle operation if adequate pressure does
not exist in the supply line.

83

1402-509

CO

I4C2-490

I4C2-49

1402-493——

1402-495^

I4C2-497—^

I4C2-499—-—'

2

1402-494^

I4C2-496

I4C2-498

-----
—

I4C2-5I0,

I4C2-50I 14]

I4C2-502 (2L

1402-503

■ 0 \l 402-504.

J4C2-528

I4C2-5I3

J4C2-5I4
I4C2-5I5

I4C2-505

1402-506

I4C2-507

I4C2-508

I4C2-52I (2)

I4C2-5I6

I4C2-5I7

I4C2-5I8

I4C2-5I9

SE 330J-A

SE 3308-A

1402-522

I4C2-520

I4C2-523
I4C2-524

WHEEL SLIDE AND PARTS

WHEEL SLIDE AND PARTS

CO

U1

14 C-2 No.

490
491
492
493

494
495
496
497
498
499

500

501

502

503
504

505
506
507
508
509

Part Name

Wheel Sleeve Flange
Spindle Nut
Wheel Sleeve
Balance Weight

Water Thrower

Wheel Spindle
Spindle Box Nut (large)
Spindle Box (large)
Spindle Box Case (large)
Thrust Collar
Wheel Slide Cover (LH)
Wedge Bolt (4)
Oil Tube (2)
Large Spindle Box Oil Plug
Oil Slinger
Solid End Thrust
Thrust Yoke Pin
Thrust Yoke Bracket
Thrust Collar
Pressure

Switch

14 C-2 No.

510

511
512
513
514
515

516
517
518
519
520
521
522
523
524
525
526
527
528

Part Name

Thrust Bracket
Mounting Plate
Filter
Needle Valve
Oil Manifold
Oil Tube
Wheel Slide
Spindle Box Nut (small)
Oil Slinger
Spindle Nut
Sheave
Thrust Collar Adj. Nut (2)
Spanner Nut (2)
Spindle Box Case (small)
Spindle Box (small)
Small
Wheel Slide Cover (center)

Wheel Slide Cover (LH)

Manifold

Spindle Box Oil Plug

I

I

co

05

(

\

SE-32S3-A

SE-J565--A

WHEEL WEAR COMPENSATOR

SE-3282-A
SE-3565-A

WHEEL WEAR COMPENSATOR -

Code Nos. 1-42

PART NAMES

00

-a

Code No.

1

2

3

4
5

6
7
8

9

10

11
12
13
14

15
16

17
18
19

20

21

Part Name

Feed Screw Gear
Washer
Clutch Gear

Washer
Spacer (3)

Ball Bearing (4)
Spacer
B. G. Wks. Worm

Drive Shaft
Clutch Body (2)

Spring (6)
Roller (6)
Clutch Sleeve
Lock Washer (2)
Spanner Nut (2)

Rd. End Key (2)

Spacer
Gear Bracket
Gear
Set Screw (2)

Idler Shaft

Code No.

22
23

24

25
26
27
28
29

30

31

32

33

34
35

36

37
38
39

40

41
42

Part Name

Rd. End Key (2)
Torrington

Bearing (2)

Gear
Adjusting Screw
Adj. Screw Plate

Plunger
Spring

Piston-Rack
Lock Washer
Spanner Nut

Worm Gear
Thrust Collar
Ball Bearing
"O" Ring (2)

Oil Seal Ring

"O" Ring (2)

Ball Bearing Spacer
Ball Bearing

"O" Ring (2)
"O" Ring
Feed Screw Shaft

NOTE

When using these code

numbers, please be sure to specify that the wheel

wear compensator is involved.

SECTION X

OPERATOR'S

PREVENTIVE MAINTENANCE

Your NORTON grinder is a sturdily built machine and should
not require excessive maintenance. Of course normal good care should
be afforded it to help assure trouble-free operation. In this interest the

following items are listed as guides that should be followed.

General

. The correct grades of oils should be used in amounts shown on

metal tags located near the fill opening for each reservoir.

. Keep all splash guards firmly attached. This will help to prevent

coolant and dirt getting into the ways and other machine

mechanisms.

. Use full sets of matched Vee belts and be sure that these are

tightened as shown on the instruction plate. Belts that are
excessively tightened contribute to bearing wear and shorten

the life of the belts themselves.

. Remove any build-up of grinding swarf which tends to create dams

that may divert coolant into the ways. Special check points are

behind sliding table ways and the front areas of wheel slides.
If coolant penetrates to ways it may carry grit, which will
result in scoring.

Daily

. If the machine has exposed piston rods, such as these for sliding

tables, and these have not been in constant use, wipe them
before operating the table. This applies particularly to
machines used for several weeks for plunge grinding and then

used for traverse work. A light film of oil will help prevent

build up of rust and protect the exposed rod from grit.

Wipe all controls regularly to prevent push buttons from sticking,

and handles from becoming slippery.

Fill oil cups on automatic truing devices or other mechanisms in

constant use.

Inspect your machine as routine during the warmup period. Before

starting the wheel be sure it is free of any interference from
misplaced objects. While it warms up it is well to run a fast

check on the wheel slide, table, etc

to test for smooth motion.

• >

In other words, form the habit of looking the machine over when
getting ready to run a job so that any future trouble spots will be
noted early and corrected before they become a real problem.

88

Weekly

Monthly

6 Months

Check condition of center points.

scoring perceptible to touch.
cause of unsatisfactory results in grinding.

Regrind centers when there is any

Poor center points are a common

If

centers are
removed, be sure the shanks and recesses are free of nicks or
dirt before replacing.

Check condition of the coolant.

Dirty coolant may have poor cooling

qualities. It may also have particles which might be detrimental

to the ground finish.

Fill grease fittings or any oil cups that are not given attention on

each day.

. Check oils monthly for cleanliness and replace if contaminated.

. Clean all oil filters and strainers

. Change hydraulic system and lubricating oils.

Even when oils seem
to have extra long life, it may be well to arbitrarily change them
at this time to help keep the hydraulic

system gum-free, and to

make sure that ways and spindles are being lubricated correctly.

. Check alignment

for a single production
there is no wear between them and the table, this check is not
needed.

. Check bearings for excessive wear, such as at headstock,

etc. , to prevent development

General

Comments on Electrical Equipment

. Make visual inspection occasionally of moving parts.

. Occasionally check contacts in electric timers if equipped.

. Be sure replacement overload heaters are correct for motor rating.

. Make yearly check of insulation with ohm-meter.

Particular Comment

*** Become SAFETY conscious. Tools falling into the work areas or
flesh pinched by unguarded
practices are preventive maintenance for your machine,

of

head and footstock. If the machine has been used

job so that these have not been moved and

wheel spindle,

of

grinding inaccuracy.

belts are maintenance problems. Safe

and for YOU

.

89