Norton Type CTU & LCTU Cylindrical Grinding Machines - Manual Grinder

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N E S

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Cylindrical

Plain and Semiautomatic

also

Grinding

Machines

14" TYPE iCTU Machines

INSTRUCTION MANUAL No, 1487=1

MORTON

COMPANY

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WORCESTER 6, MASS

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MACHINES

10" TYPE CTU

Cylindrical Grinding Machines

Plain and Semiautomatic

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14" TYPE LCTU Machines

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INSTRUCTION MANUAL No. 1487-1

NORTON COMPANY • WORCESTER

6, MASS., U.S.A.

FOREWORD

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

It also covers 14" Type LCTU Machines, which, other than in actual

swing capacity, are identical to the 10" Type CTU.

In the Parts Section, a procedure for ordering or for correspondence

with regard to replacement parts is outlined. Adherence to this will avoid

unnecessary delays.

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★

The descriptions, illustrations, and specifications given in this Manual
were correct at the time of printing. However, since the policy of Norton
Company is to constantly improve its machines, those built at later dates

may differ from these details.

★

NORTON COMPANY, WORCESTER 6, MASSACHUSETTS, U.S. A.

Chicago 32, Illinois .

Cleveland 3, Ohio
Detroit 8, Michigan .
Hartford 7, Connecticut

New York 6, New York

Dealers in all principal cities

★

★

★

★

. 4737 So. Christiana Avenue

1306 East 55th Street
. 5805 Lincoln Avenue
. 998 Farmington Avenue

61 Broadway

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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
Filling the Oil Reservoirs
Oiling

Grinding Coolant
Operation Experimenting

SECTION II—LUBRICATION

Viscosity Rating
Hydraulic and Circulating System
Wheel Spindle .

Grease Selection
Oil Dilution

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Balancing

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SECTION III—UNIT CONSTRUCTIONS

Table and Taper Adjustment
Headstocks
Footstock

Wheel Feed
Wheel Feed Settings
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

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19

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Page

Hydraulic Oil Strainers ....

Wheel Spindle Bearings Adjustment

Wedge Bolts and Spanner Nuts

Bearing Temperature ....

Spindle End Thrust Adjustment .

SECTION IV

NORTON 10" Type CTU Plain Machine

Operating Arrangements .

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SECTION V

NORTON 10" Type CTU Semiautomalic Machine

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*
32 ALUNDUM* and 38 ALUNDUM*
57 ALUNDUM*

CRYSTOLON*
Factors Affecting Selection
Index Setting—Wheel Wear

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Wheel Balance
Center Examination
Grinding Compounds

Cleaning
Spindle Speed
Wheel Speed Changes
Work Speed

Traverse Speed
Vibration

Deep Groove or Shoulder Grinding Attachment

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SECTION VII

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Parts

SECTION VIII

Cross Index of Part Numbers

♦Trade Marks Reg. U.S. Pat. Off.

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LIST OF ILLUSTRATIONS

INSTRUCTION SECTIONS

Norton 10" x 36" Type CTU Semiautomatic Machine
Rear view—10" x 18" Type CTU Machine
Left rear view—10" x 18" Type CTU Machine .
Right rear view—10" x 18" Type CTU Machine ...
Nomenclature view—10" Type CTU Semiautomatic Machine
Floor Plan
Lubrication Chart
Lubrication Circuit Diagram
Complete Wheel Feed Unit
Plan view—Wheel Spindle Housing
Identification of Operating Controls—Plain Machine

Identification of Operating Controls—Semiautomatic Machine

PARTS SECTION

Parts Plate Identification
Headstock—A.C

Headstock—D. C.........................................................................

Footstock
Wheel Guard and Parts

Wheel Slide and Parts
Reciprocating and Shoulder Grinding Attachment .
Cross Feed
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
Diamond Tool Holder and Steadyrest

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Cylinder

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Front view—Norton 10" x 36" Type CTU Semiautomatic Machine

(equipped with wheel guard truing device as extra)

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Rear view—Norton 10" x 18" Type CTU Semiautomatic Machine

(equipped with wheel guard truing device as extra)

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Left rear view

Right rear view—

— Norton 10" x 18" Type CTU Semiautomatic Machine

(equipped with wheel guard truing device as extra)

(equipped with wheel guard truing device as extra)

Norton 10" x 18" Type CTU Semiautomatic Machine

N-6446

N-6445

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Nomenclature view- Norton 10" Type CTU Semiautomatic Machines

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NOMENCLATURE

1. Turn counterclockwise to open belt
guard cover.

2. Headstock clamping nuts.

3. Headstock rack pinion.

4. Work rotation control lever.

5. Motor push buttons.

6. Table traverse handwheel.

7. Table reverse lever.

8. Truing and grinding speed controls.

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9. Wheel feed manual control lever.

10. Table dwell controls.

11. Selector for semiautomatic or plain
operation.*

12. Table stop-start and truing lever.

13. Wheel feed clutch lever.

14. Wheel feed positive stop.
“ Click-Count”

15.
click on clockwise rotation represents

amount of feed to obtain .0001" work
diameter reduction. Push in knob and
rotate to make settings in “

wheel feed index. Each

tenths.

”

16. Control for amount of wheel feed at

table reversals (adjustable from zero

to .003").

17. Automatic feed rate controls.*

18. Steel tape type base way guards.

19. ‘‘One Lever”

control for starting grind

ing cycle.*

20. Table swivel adjustment. Turn clock
wise to move right end of table toward
grinding wheel.

21. Footstock rack pinion.

22. Footstock lever. Pull way back to lock
spindle in withdrawn position.

23. Footstock clamping nuts.

24. Footstock spindle binder.

25. Filter for spindle lubricant.

26. Spindle lubricant sight glass (one for
each bearing). Lubricant stream must
be continuous when wheel is running.

27. Coolant control lever. For manual op
eration of coolant flow.

28. Electrical control enclosing case.

Note: Controls marked * arc on Semiautomatic Machines

only.

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SIZE

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10x18
10x36
10x48
10x72
10x96

10x120

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HYDRAULIC RESERVOIR

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OF FOCTTSTOCK LEVER.

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Floor Plan—Norton 10" Type CTU Machines

Note: Dimension of 7'-5|4" applies only to Semiautomatic Machines.

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SECTION I. INITIAL SET-UP AND ADJUSTMENT

LOCATION

Erecting drawings are sent with every
machine shipped from the factory for the
assistance of the millwright in setting up
our machines. In addition, the illustra
tions on Pages 4 and 5 show the appearance

of representative machines and the locations

of the various units. In setting up these
machines, care should be taken to provide
ample clearances.

It is sometimes found that a grinding
machine must be placed in a somewhat
adverse location. The proximity of rail
road traffic, a hard subsoil condition, or
near-by machines that set up

tions will undoubtedly influence the pos

sibilities of obtaining fine finishes, especially

if a highly reflective surface is demanded.
Should the location be one in which such
vibrations are not absorbed by the usual
foundation or the surrounding soil, the foun
dation drawing blueprint shipped with ma
chines of 72" and longer work length, give
data on a special type of river-bed sand
foundation which has been used with satis
factory results in combating difficult
conditions.

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

jarring vibra

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

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no small parts are thrown away, mislaid,

or lost.

LIFTING THE MACHINE

The three-point method of lifting should
be used. Place slings around short bars,
thrust into the large cast holes in ends of
the base and place a hook under the shelf

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at the rear of the coolant tank. Hemp
rope, wire rope, or steel chains may be used,

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with rope being given the preference. Be



sure that kinks or knots do not tend to lift
the table or damage any portions of the

machine while lifting.

SETTING UP

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

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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.

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After placing the machine, remove the

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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.

ASSEMBLY OF PARTS

Assemble all guards, pipes, and the cool
ant hose as received separately with the
machine. Refer to the pictures in this

manual if assistance is needed in determin
ing 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 discon
nect switch on the control panel is inter
locked with the enclosure door. The door

handle must be in the “
before the enclosure door can be opened.

Connect the incoming power lines to the

terminals marked “
tions”
switch. A yellow tag attached to the con

trol 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

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 foot

stock unless the swivel table is clean.

with a red tag on the disconnect

The headstock and footstock should be

OFF”

Customer’s Connec

position

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WHEEL SHEAVES

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Three wheel spindle belt sheaves are sup
plied, 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 pre
vent 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. Unless a
clear ring is emitted the wheel should not
be mounted. Being satisfied that the wheel

is sound, one of the blotters supplied by

the wheel maker should be placed 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. Draw the screws up
snugly making sure 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 is snug. Then go to the diametri
cally 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

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10

consisting of the wheel sleeve and the grind
ing wheel should then be mounted on an
arbor and placed in a balancing stand for
determination of balance of the unit. Re
move 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.
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
fluid, and the ways lubricant reservoirs.
The wheel spindle lubricant reservoir is
within the wheel spindle housing. Fill this
reservoir with approximately 7 ]/'■> quarts of
50-60

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 approxi
mately 38 gallons. Fill with a high grade

hydraulic fluid of 150 S. U. V. to the level

indicated on the sight gage in the base
wall. For the outside hydraulic fluid reser
voir 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
3^ gallons are required.

OILING

Locate all oil holes and cups on the

on, this

reservoir. Approximately

When the

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machine and fill with a medium grade of
good machine oil.

GRINDING COOLANT

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Whether soluble oil or a paste-type cool

ant 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

75 gallons.

In selecting 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
Check coolant reservoir.

wheel slide to its extreme rear position.
Then place the headstock and the foot-
stock at the extreme ends of the table and
centralize them with the grinding wheel.
Set the table reverse dogs so that the table
will travel about 6" and the table move
ment 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.
be seen that it is in the stop position
until everything is known to be in readi
ness to run the table.

oil

in

reservoirs is at proper levels.

Before starting the machine, move the

Naturally it should

Time should be spent in determining the
functions of the various controls and care
taken to avoid damage. Read the descrip
tion of your particular machine arrange
ment in Section IV or V.

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11

SECTION II. LUBRICATION

VISCOSITY RATING

Lubricating and hydraulic oils, greases
and grinding lubricants, applied in the
operating of Norton grinding machines,
should be of a correct type and good qual

ity. The following information should be
valuable to the user of Norton machines
to get maximum production with minimum
down time.

To evaluate the physical properties of an
oil, the term “
indicates the measured resistance of the oil

to flow at a given temperature and rate.
The Say bolt Universal Viscosimeter rep

resents the U. S. standard

determining the time in seconds for
60 c.c. of oil to flow through a standard
orifice at a specific temperature.

viscosities indicated will be identified at
100° F. for simplicity of control.

Identification of the viscosity represented

by the S. U. V. at 100° F. is the abbrevia

tion for Saybolt Universal Viscosimeter.

U. S. standard

South American standard
British standard .
Continental

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 un
der which an oil of this type must function.

The residues formed during the oxidation

viscosity

” is used. This

means of

Saybolt
Saybolt
Redwood

Engler

The

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S

of a petroleum oil are in the form of gum
and varnish which readily disturbs the sen

sitive valves of a hydraulic control mechan
ism.
plugged pipe lines in the central lubricating

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system. The “
cating the point at which an oil is no longer

a fluid, will present a problem only when
the equipment is exposed for long periods
of time to low temperatures, or when the
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 im



purities, must be used.

WHEEL SPINDLE

spindle is critical to the successful operation
of the entire machine.
are no exception to this rule. For spindle



oil, we recommend the use of the highest
grade oil with viscosity of 50-60 S. U. V.
at 100° F. for use in all Norton machines

with plain bearings.

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



be governed by the speed, temperature, and

This also might be the cause of

pour point

The lubrication of any grinding wheel

Spindle oil should be free from any form

The selection of the correct grease will

” of an oil, indi

Norton Grinders

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LOOSEN PINCH-BLOCKS AND LIFT STEEL.

RIBBON QUARD TO INSPECT WAYS
LUBRICANT DRAIN-HOLES
(ONE AT EACH

END

OP PLAT AND VEE WAY )

streams op spindle lubricant

MUST SHOW IN SICjHT QLASSES AT ALL.
TIMES WHEN SPINDLE IS IN OPERATION

COOLANT TANK-
CAPACITY APPROX.

7

5 GALLONS

WHEEL
SPINOLE LUBRICANT FILL POINT.
FILL WITH JO
SPINOLE OIL TO LEVEL INDICATED
ON BAYONET QA^E

AFTER JOO HOURS OF SERVICE

SPINDLE

RECQMMENPEO CHANGE

LUBRICANT

*60 SU.V. AT lOO°F.

(APPROX

7^QTS.)

;
;

HYDRAULIC OIL

FILL

HYORAULIC

ISO S.U.V. AT |00°HYORAUL1C OIL TO

LEVEL INDICATED BY SiqHT QUASS
IN BASE WALL ( APPROX. 3Q (^ALS)

FOR OUTSIOE RESERVOIR, FOLLOW

INSTRUCTIONS ON PLATE

RECOMMENDED CHANGE

w

AFTER 500 HOURS OF SERVICE -OR
WHEN EVIDENCE OF COMTAMIN ATI ON

TS- THOROU
CRVOl RON

RESERVOIR WITH

OHLY CLEAN

CHANGE.

■

;

‘

;

i

i

;

WAYS

OIL CUPS AND HOLES
USE 300 S U.V. LUBRICATING) OIL-

FILL WAYS LUBRICANT RESERVOIR
IN ACCORDANCE WITH INSTRUCTIONS

ON PLATE ( APPROX- 3-J (qALS.)

AFTER JOO HOURS OP SERVICE

LUBRICANT

RECOMMENDED CHANGE

.

'

SE-779-B

Lubrication Chart

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—

—

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*6

exposure under which the machine must

operate. Ball bearings at low tempera
tures require a soft cup grease. High tem
peratures require a high grade soda soap
grease which possesses a

When moisture is present, use a water in
soluble 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
mend that a ball bearing be filled from one-
third to one-half capacity and be approxi

mately maintained at that level. Greases

must not bleed in operation.
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 mechan

ical failure. Stability, therefore, is of ex
treme importance in grease selection.

high

melting point.

’ recom

When the








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 emul

sion 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.

e



m

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13

§

§

§

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WAYS

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TABLE WAYS

SPINDLE BEARINGS

|

:

DESCRIPTION

NOAMT

/

larqe

X

SPI BO

SR END THRU5

WHEEL SPINDLE^ 3

in

HVD.PRESSURE PUMP-

SEPARATE RESERVOIR

ELEC

mtr

;

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3^ C,AL. RESERVOIR

300 S U V. WITH ADDITIVES

hp-roo r.rm

.

ALL LINES

X O. O. TUBING AND SMALLER-.

4 "IM"- DENOTES PASSAQE IN HYDRAULIC COMPONENT

ALL TU BINC, - STE E L

T/ITy

(B>

^(60

FILT

SET 3 R S. 1.

(S)

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SPINDLE RESERVOIR

(

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TUBING, EXCEPT

pp BO*

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OTHERWISE SPECIFIED

035 WALL THICKNESS

VICKERS DOUBLE

O)

PUMP

BROWN AND SHARPE

(2.)

RELIEF VALVE

(3)

5K1NNER FILTER.

BROWN k SHARPE PUMP

(4)

NORTON RELIEF VALVE

15)

NORTON VALVE

(<b)

NORTON VALVE

(7)

NORTON SPINDLE

(8)

WORM OILER.

V-L\-I05-A

-LH

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SE-77I-C

Lubrication Circuit Diagram

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6

SECTION III. UNIT CONSTRUCTIONS

6

1

i

TABLE AND TAPER ADJUSTMENT

I

■

These machines have a sliding table which

travels on the flat
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 graduated 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 head-

stock 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 “
provided for this purpose.

Both the dead center and the live center

types of headstock are driven directly
through vee belts. Plates 1 and 2 in Sec
tion VII show how the belts are adjusted

by means of eccentric shafts.

The ball bearings of both dead and live

center headstock are preloaded and pre

lubricated so that no attention is required.

and vee ways of the base,

Hand-Auto

” is





Headstock center taper is No. 14 Jarno.

FOOTSTOCK

The footstock usually supplied is the
lever type with spring compression control.
The initial movement of the hand lever
retracts the center,

of the lever locks out the center in its re-
tracted position.

The footstock spindle is
of a large hand knob on the front of the
footstock body.

Footstock center taper is No. 14 Jarno.

WHEEL FEED

Wheel feed is accomplished by a feed

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, appears on Page 17.

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.

pushing the indexing knob inwards and
rotating it clockwise, wheel feed settings in
increments to provide .0001
eter reduction up to a total of .004”, may

be selected.

The following table of measurements

A further movement

clamped

” of work diam

by

(Refer to Page 17)

means

By

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16

*

represents a correlation of work diameter

reductions in both the English and metric

systems

Each notch in index knob
One turn of index knob

One turn of handwheel

POWER WHEEL HEAD TRAVERSE (Semiauto

Semiautomatic

positioning of the grinding wheel. It oper

ates as follows

The wheel slide rapid traverse piston rod

(P) (on Page 17) 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 termi

nation 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)
shown on Page 17. Then turn screw (W)

in or out to decrease or increase the distance
of the rapid traverse movement,

retighten check nut (V). Two needle valves
at the rear govern the rate of the forward
and backward cushioning strokes.

AUTOMATIC GRINDING FEED (Semiauto

Upon termination of the rapid traverse
and cushioning stroke of the wheel slide in
forward movement, the automatic grinding

feed begins. This is accomplished by hy
draulically rotating the feed screw,
grinding feed continues at the rate set by

control "M
on the wheel feed handwheel contacts posi
tive stop arm “D.”

Hydraulic rotation of the feed screw is

by means of a wheel feed control cylinder

:

Settings

matic Machine)

This arrangement is provided on the

Machine for rapid, power

:

matic Machine)

” on Page 26 until the stop

English

.0001"
.004"
.200"

Metric

.0025 mm.
.10 mm.

5.0 mm.

Then

The

the details of which are shown in the draw
ing of this unit that appears on Page 43.
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,

therefor, under conditions of solid metal-



to-metal contact.

AUTOMATIC FEED AT TABLE REVERSALS



(Plain Machine)

With the manual control lever (J) as
shown on Page 22 turned to the left, auto
matic 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 .003". The amount
of feed desired within this range is set by
control (L) as shown on Page 22.

The total amount of this automatic feed

that is obtainable is .150" in terms of
diameter reduction. This represents .075"
of wheel slide movement. When this feed
is used, there is automatic reset of the
wheel head after grinding to size.

When it is desired to traverse grind with
out having automatic feed at table rever
sals, throw control lever (J) 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 in

structions on Page 24.

The Semiautomatic Machine also has this

feature of automatic feed at table reversals,
for use when traverse grinding operations
must be performed.

WHEEL SPINDLE RECIPROCATING ATTACH

MENT

When a spindle reciprocating attachment
is supplied, reciprocation of the grinding
wheel from 0" to

m

ay be obtained.



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Normally, the setting made at the factory
gives approximately
To increase or decrease this amount, re
move the circular cover behind the recipro
cation 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
Yp" reciprocation of the spindle.

WORK START-STOP UNIT

Work rotation is automatically started

and stopped on both Plain and Semiauto
matic Machines. This unit is located in
side the left front apron. A limit switch
is operated by hydraulic and spring action
so as to start and stop the
A selector switch, mounted on the left front
panel, 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. Nor
mally, these valves are set at the factory
for the pressure at which each system
should operate. However, metal tags speci
fying the correct pressures are attached to

each valve. Maintain ways lubricant pres
sures at 4 to 6 pounds. Excessive pressure
may cause improper positioning of sliding
components.

On the discharge side of both the lubri
cation 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

of reciprocation.

1 6

work drive motor.

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,



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. In this case,
a very slight adjustment should be made
and repeated if necessary. This is to avoid
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 is 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.





Reduction in the diameter of the bear
ing 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 bear
ing is drawn into its case .012", a reduc
tion of .001" is obtained in the bearing
bore.

Therefore, to obtain .001" 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

NOTE

On machines






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19

Oil Pressure.

Ad

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Spindle Pec Ip. Adj.

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Shoulder Gr.

S-top

Spindle Box

___

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i

’ Inner

Spanner Nut

Spindle End Thrust

Spindle Box Wed^e
Spindle

Box End Spanner Nuts

Adjustment

Bolts

Plan view—Wheel Spindle Housing

N-6024-A

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feeler gage. Now tighten the inner spanner
nut until the outer nut is seated against the
bearing case. This should give .001" reduc
tion 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
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
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,

mering on the nuts will set up strains

bearings which may lead to trouble. Do

not pound on the wrench with a hammer

move is

but not too tightly. Ham

important. The

excessively

tight.

in the

and under no circumstances should a set
punch be used in adjusting these spanner
nuts, since these tools will cause a peening



action which in time might cause oil leak

age from the bearing.

BEARING TEMPERATURE



Bearings

when they are cold. Should the machine

be in need of bearing adjustment,

to run for some time until the bearings

warm

up.

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 clear
ance enough for the expansion of the
spindle.

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.

should never be adjusted

A

bearing, if adjusted when cold,

allow it

or



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IDENTIFICATION OF OPERATING CONTROLS

Type CTU Plain Machine

o

£3

S3

S3

3

3

1

SE-849-C

§

§

I

§

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

D. Wheel Feed Positive Stop Arm

F. Pointer for
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

determining

amount of wheel feed

22

setting

for .0001" work diameter reduction

§

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SECTION IV. NORTON 10" TYPE CTU PLAIN MACHINE OPERATING

ARRANGEMENTS

CYCLE CONTROLS CONSIST OF

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.
speed hand drive apron with auto
matic handwheel interlock.

II Individual hydraulically controlled ad

justable dwell at each end of table
reversal.

III Hydraulically controlled adjustable

wheel picker feed at each end of table

reversal. (Revolving feed screw type.)

IV Automatic or manual control of work

revolution stop

jogging control.

V Automatic

VI Hydraulic means to convert picker

feed to manual control for grinding
shoulder and step diameter grinding on
work without disturbing wheel feed

set-up.

FUNCTIONS

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

and

start, with manual

control of grinding coolant.

work.

Throw table

Single





stop-start lever (H) full motion to the

left.

a. Table starts traversing and dwells

at each table reversal if 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 discon

nected from rack pinion.

e. Grinding wheel advances at an

initial rapid feed to take
backlash.

f.

Grinding wheel is fed into the work

at each table reversal (adjustable
by control (L) from 0 to .003")
until work is down to size.

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 ini
tial rapid feed.

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

When it is desired to obtain more
clearance
loading, proceed

between work and wheel for

as follows:

up existing



;

!



23

wm

%
%

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 diam

eter on work proceed as follows:

1. When work is to size and before stop
ping table traverse, throw manual con
trol lever (J) to the right,

a. Converts cycle controls from table

stop lever (H) to manual control
lever (J).

2.

Turn wheel feed handwheel (A) clock
wise for clearance between wheel and
work.

3. Throw table stop-start lever (H) full
motion to the right.

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 ini

tial rapid feed.

TO SET WHEEL FEED INDEX

Proceed as follows:

1. Declutch (Cj 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 con
tacts positive stop arm (D).

5.

Rotate index knob (B) clockwise the

amount of grinding feed desired by
using pointer and graduations on hand-
wheel. Each graduation on handwheel

equals .001" work diameter reduction.
Each click of index
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 neces
sary, correct for final size by move

ment of index knob (B).

knob equals .0001





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SECTION V. NORTON 10" TYPE CTU SEMIAUTOMATIC MACHINE

OPERATING ARRANGEMENTS

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

II Hydraulic rapid wheel head traverse

III Continuous straight infeed for plunge

IV Means to convert semiautomatic ar

V Electrically controlled timing device

Functions (with selector valve (P) set

to PLUNGE).

:

I Hydraulic means to convert picker

feed or continuous feed to manual con
trol for shoulder and step diameter
grinding on work without disturbing
wheel feed set-up.

with adjustable stroke.

cut work.

rangement of machine to a plain
machine.

to automatically terminate cycle, if
desired.

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

Operate





e. Grinding wheel advances at an ini

tial rapid feed, to take up existing
backlash.

f. Proceeds to grind at the predeter

mined rate of feed, until it is

stopped by (D) and sparks die out.

g. Electrical timer indicates termina

tion 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.

Conversion to plain machine ar

rangement:

Move selector valve lever (P) to the

“

traverse

Lever control for termination

1.

To side grind shoulder or step diam

eter on work proceed as follows:

1. When work is to size, throw manual

” position.

a. Transfers cycle controls from wheel

slide lever (N) to table stop-start

lever (H).

Turn selector switch (S) to HAND,

thus eliminating the electric timer.
Then substituting (g) in above func

tions by

lever (N) toward machine to de

energize wheel slide valve solenoid.

control lever (J) to the right.

operating wheel head traverse

of

cycle.

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IDENTIFICATION OF OPERATING CONTROLS

,

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

M. Feed rate control for plunge grinding

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

P. Selector for Plain or Semiautomatic operation

S. Selector switch for manual or automatic work rotation control

T. Table Handwheel

Type CTU Semiautomatic Machine

26

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a. Converts cycle controls from wheel

head traverse lever (N) to manual
control lever (J).

2. Turn wheel feed handwheel (A) clock
wise 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

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

in back position.

2. Declutch handwheel (A) with control
(C) and revolve handwheel clockwise

several turns. Close wheel feed valves

(L & M). Note: Valve (L) controls

the amount of feed at table reversals.
Its function is explained on Page 26.
It should remain closed for plunge
grind operations.

3. Pull control lever (N) to bring wheel
forward
grinding wheel should stop short of

the workpiece. If it appears that the
wheel will contact the workpiece, im
mediately retract wheel by pushing

control lever (N). Then revolve hand-

wheel clockwise several more turns.
This will provide additional clearance

On this movement the

.

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on forward power movement of the

wheel.

4. When wheel stops short of the work-
piece on forward movement,
wheel into light contact with work-
piece by counterclockwise movement
of handwheel (A),
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 re
duction; each graduation on wheel
feed handwheel equals .001" work
diameter reduction.

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

Then reclutch

bring wheel

feed

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SECTION VI. GRINDING PRINCIPLES AND GENERAL PROCEDURE

FINISH FACTORS

The quality of finish of the ground sur
face 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 prin
ciple 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 break

ing 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, ’

dressers. Various methods are used to hold



the truing devices to the 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 per
manently clamped to the table, by sliding
the truing bar to clear the work, during
grinding.

The routine practice in wheel truing, fol
lowing 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
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.

In summation, it may be repeated that

good truing technique is only obtained
through experience. Rough truing consists
of opening up the grinding surface of the

“

Ross,

” or “

Precision

rate. The wheel

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wheel to expose sharp abrasive surfaces
necessary for the rapid removal of stock.
Finish truing, requiring a smoother abra
sive face, requires the lightest possible feeds
of the

wheel to the diamond and the slowest
possible table traverse compatible to pro
duction.

Care should
tion, especially if the comparatively valu
able diamond is being used. Avoid con
tinual truing.

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 re
straint. 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.
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

be taken

A wheel which requires

piece to be ground. These

in any truing opera

Naturally a

can be set anywhere on the table, but it is
better practice to have the center of the

workpiece come approximately over the



center of
taper adjustment.
wheel, and then take a light cut across the



work.



ADJUSTMENT FOR TAPER






Check the workpiece to determine ex
actly 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

overcome a known taper.

WHEEL SELECTION

The selection of

enced by many factors and naturally a
manual of this nature can give only sug
gestions on a proper choice. However, the
operator or shop foreman is urged to exer
cise intelligent discrimination in making his
selection. Not only will production
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.

grinding need. Hundreds of combinations
of grade, grain, and bond are available
and a good general rule in wheel selection
is found in “

the wheel,
tions to this rule.)

ALUNDUM*

ton 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.

29

the

table in order to equalize the

Next true the grinding

a grinding wheel is influ

There is a NORTON wheel for every

The harder

> >

(There are, naturally, excep-

ALUNDUM* is the trade name for Nor

*Trade Marks

Reg.

U. S.

Pat

the

steel, the softer

Off.

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and

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32 ALUNDUM* AND 38 ALUNDUM*

For extra sensitive steels, it is suggested

i

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that a wheel made of 32 ALUNDUM* or
38 ALUNDUM* be used since such a wheel

has less tendency to burn the work.

57 ALUNDUM*

57 ALUNDUM* is another member of
the NORTON family of ALUNDUM*
abrasives. Its grinding characteristics are

intermediate between the tough regular

ALUNDUM* 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*

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.

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.
moved, 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.
avoided but by the selection of the correct
wheel and removing only the few thou
sandths ordinarily taken off in finish grind

ing, 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.

If there is much stock to be re-

Wheel wear, of course, cannot be

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53

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 factors.

Obviously, with such a variety of factors

to be considered, expert guidance may be
required in making the proper wheel selec
tion, 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,

CENTER EXAMINATION



30

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,
the center holes have become damaged,

good work cannot be produced,
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.
the centers or the center holes is the most
common cause of poor grinding.

*Trade Marks

Reg.

U. S.

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GRINDING COMPOUNDS

A satisfactory grinding solution may
easily be made by filling the machine’s
tank with water and adding a can of grind

ing compound, approximately five pounds.
A thinner proportion may be used at the
discretion of the operator. 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 not rust the machine.

CLEANING

The machine should be cleaned regu
larly. Despite a built-in settling tank, grit
and metal particles have a tendency to

5 >

“ float
recirculation to the possible detriment of
the ground finish. A filter may be used
to good advantage.

in the coolant, which may mean

proper wheel
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 ob
tain 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 revolu
tion 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 opera
tor what work and table speeds to use.

surface

speeds (with

no

change



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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,
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. Appro
priate sheave changes may now be used so
as to re-establish, as nearly as possible, the

The wheel will act

VIBRATION



Vibration in a grinding machine is one
of the chief causes of difficulty and pre
cludes all chance of obtaining a good finish.
Occasionally the source can readily be lo
cated 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 can
not 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 arma
ture of every motor used is removed and
checked for balance before mounting.

31

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DESCRIPTIVE OPERATION—DEEP GROOVE OR SHOULDER GRINDING

ATTACHMENT (1

1. Wheel
Solenoids S, and S

the back position and the N.O. Solenoid valve is open. In addition,

the shoulder feed valve piston is in contact with the end cap C and port

is open to atmospheric exhaust.

2. Wheel Slide Rapid Traverse Forward

Pulling the wheel slide lever forward, energizes S, and S
which closes port P> At the end of the pre-set slide rapid traverse
movement, nut N contacts the end of the shoulder feed valve piston
and a further movement closes port P.

Slide Retracted

2 are de-energized and so the wheel slide piston is in

” Maximum Movement)

2 simultaneously

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3. Shoulder Feed Movement

With port P
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.

4. Body Feed

Simultaneously with the shoulder feed termination, Dog D contacts LS-.
which de-energizes S
free to move to the right and the body feed starts.

5. Shoulder Feed Setting
a. Back off nut N.

b. Bring the slide forward under power.

c. Adjust distance between N and end of shoulder feed valve piston

equal to—total wheel slide traverse minus (shoulder feed plus ^§).

d. Adjust D and LS

(Backlash is compensated at start of slide rapid traverse.)

2 closed, the oil is trapped so that the wheel speed piston

2 and opens port P2. Now the wheel feed piston is

2 so S-. is de-energized.

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33

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Wheel Guard & Parts—Plate 4

GO

Headstock—Plates 1 & 2

Push Button Apron—Plate 11

Hand '

raverse

Apron—Plate 15

Table

Control Valve—Plate 13

Combination Valve—Plate 10

MORION

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Main

Wheel Slide & Parts—Plate 5

Reciprocating & Shoulder Grinding

Attachments—Plate 6

j

Control

Valve Parts—Plate 14

Footstock—Plate 3

Wheel Feed Apron—Plate 8

Feed Screw & Parts—Plate 9

Table Cylinder—Plate 12

Cycle

Control

M

chanism—Plate 11

J

Cross Feed Cylinder—Plate 7

ti. A,

PARTS PLATE IDENTIFICATION

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SECTION VII. PARTS

Index

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 Valve
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

Unit

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

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

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

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

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

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

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

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

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

Plate

1

2
3
4

5

6
7
8
9

10

11
12
13
14
15

16

Page

36
37

38

39

40

42

43

44
46
47
48

49

50
51
52
53

K

e

z

z

Please specify Plate Number on which a required part is shown

Please specify machine Serial Number with every inquiry or order

i
;

35

IO CTU ISO- Drive. Shaft Sheave

10 CTU 1 S 2 - Eccentric Cap_

IO CTU I S3 - Eccentric Ball!

10 CTU I 84 "Ball Bearings (2.)

IO CTU 185-Washer (3) S

IO CTU 186

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IO CTU I 87 - x

drive Sheave

I 8

1- Drive Shaft___

Bearind Sleeve J

RacK Pinion

m

Motor Shaft

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I O CTU 197-

1

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Sheave

I O CTU 210-

Plugging

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IO CTU 200-

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IO CTU I 88 - Vee Bel tsC5)' >1

*10 CTU 189 - Body

#IO CTU 190-End Cover

IO CTU I 9 I - WorK Drive Plafe'
IO CTU 19 2-

10 CTU I 93 -HeadstocK Center-

10 CTU 1

Retainer - Smal I

94 - Washer (•'fl _

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10 CTU 201
10 CTU 202-
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IO CT U 203" WorK

IO CTU 205-Ball Bearings(2)

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HEADSTOCKv ^

AC ARRANGEMENT

♦These. 2 parts are attached

IO CTU 204- Pin

IO CTU 206- Clamp

0 CTU 207-ClampingBolt(2)
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0 CTU 2 08-Gjrease Seal (21

♦ IO CTU 209- Clamp Nut (2 )

PLATE 1

Spindle

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SE-669-A

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0 CTU 361 -Spring Wire.

0 CTU 3 6 2 - Spind I z

10 CTU 36 3 -#3 Plain
10 CTU 3 64 - Center.
10 CTU 365-

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10 CTU 3 6 7 - Bel lows Rind
10 CTU 3 68 - Bel lows

10 CTU 369-

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10 CTU 371-Spindle Clamp

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10 CTU 372 - RacK Pinion

10 CTU 3 7 3 -Knob

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LEVER PINION TYPF

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10 CTU 3 7 5 -

10 CTU 3 7 6-

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10 CTU 390-Clamp (2.)

\I0 CTU 391-

' 10 CTU 39 2-Body Cover QasKet

10 CTU 3 9 3 -Body Cover

-10 CTU 39 4 -Washer 12.)

\ 10 CTU 380-LinK

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10 CTU 382-Spindle Spring

10 CTU 38 3-Spindle Stop Col la r

I0CTU 3 8 4 -Spind le Cap
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Clamping Bolt 12)

FootstocX

Body

<

§

m

§

IWFrffMi

FOOT5TOCK

PLATE 3

m m m m /n

/7\ /T\ /Ti /7\ ;T\

SE-676-A
SE-677-A

m

/■Pi

;

IOCTU 155-Upper BracKet

I0CTU 15 6-1" Sate Valve

IOCTU 159-Stud

IOCTU 157-Wheel Quard

IOCTU 151-Pin
10 CTU 152-Wheel Quard

W

o

*10 CTU 153-Balance

*10 CTU 154-Screw

(^•Attached

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

Cover

Wei ght

-----------

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

-------------
Parts)

IOCTU 160-Swivel Joint-Short
IOCTU 161-Shoulder Stud

IOCTU 158-Lower BracKet
IOCTU 167-Stud

10 CTU 163-Water Spout

IOCTU 164-Wheel Sleeve
IOCTU 165-Wheel Flange

i

i

:
1

,

i

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'

;

IOCTU 166-Mist (quard

.

\yp

EEL GUARDS PARTS

SE-666-A

PLATE 4

SE-667-A

*

i

d

1

10 CTU 100
10 CTU 103
10 CTU 102

10 CTU 101-
10 CTU 114-
10 CTU 113

'

■

■

■u

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!

10 CTU III,
10 CTU 112.
10 CTU 105
1

0 CTU 139

10 CTU 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_

1

0 CTU 138

__

-----

10 CTU 117

-----

10 CTU 118

104

_

__

10 CTU 142

1

0 CTU 143

10 CTU 144

10 CTU 145

10 CTU 131

10

1

0

CTU

10 CTU 134

10 CTU 136

10 CTU 135

-10 CTU 137
10 CTU 141

10 CTU 146

10 CTU 110

10 CTU 140

JOCTU 127

10 CTU 128

10 CTU 129

10 CTU 123

10 CTU 130

CTU 132

133

WHEEL SLIDE £ PARTS

PLATE 5

/IT/H /If /Tf /ffi m /n m m m m m m m n

SE-758-A

SE-759-A

i

!'

;

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WHEEL SLIDE AND PARTS—PART NAMES

Name

10 CTU

100 Shoulder Screw

101
102

103 Connecting Link
104 Safety Arm Lever
105
107 Thrust Yoke Stud
108 Fixed Thrust Bracket
109 Pump Drive Shaft
110 Lubricating Pump Bracket
111 Hood Clamp
112 Stud
113 Oil Thrower
114
115
116 Thrust Yoke

117 Spindle Box Nut (Inner)

118
119 Thrust Shoulder Ring

120 Thrust Ring
121
122 Thrust Ring Stud (Upper)

123 Spanner Nut

Restricting Arm
Washer

Wheel

Spindle
Spindle

Spindle

Wheel

Part

Slide Cover (Left)

Box Nut (Outer L.H.)
Box Case (Large)

Box (Large)

Slide

10 CTU

Pump Worm

124

125 Thrust Ring Bushing
126 Thrust Ring Stud (Lower)
127

Wheel

128

Spindle

129 Worm Gear
130

Wedge

Spindle Box Case (Small)

131

Oil Tube

132

133

Wheel

134

Wheel

135 Spindle Box (Small)
136 Spindle Box Nut (R.H.)
137 Spindle Sheave
138 Sight Glass Retainer

Locking Ring

139

Cover

140

141 Vee Belts
142 Filter
143 Holding Plate
144 Check Valve Gasket
145

Valve

146 Manifold

Part Name

Slide Cover (Right)

Belt Guard

Bolt (Long)

Sleeve Washer
Spindle

i

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!

1

:
1

1

i

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s

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4

IOCTU 225
’OCTU 226-Tapar Pin (2)
IO CTU 227 -Indicator Support
’OCTU 2 28-
’

OCTU 229' Adj usting 5crew

’

OCTU 230'Arnn

IOCTU 231- Spr’ing

-Control Lever Shatt.
_____

St'd.Straight- Pin_

____________

IOCTU 2-4 3 - Levzr End

IOCTU 244-

’

\

OCTU 245 - Bearing

‘

"OCTU 246- Cam 5

IO CTU 247- Pin
z'OCTU 24-S-Adjus+ind Screw

IO CTU 249-Thirust YoKe

\

Spring

S-tud

1° CTU 232

IOCTU 2 3 3 - Wheel Slide

4

S5

IO CTU 235 - Thrust YoKe Pin

IOCTU 2

IOCTU 2 37-ThrusT Ring

IO CTU 23Q-ThrustYoKeBracKe+

IO CTU 2 39 - Spring Pin (2)__,

-

Control Lover.

IO

CTU

234-Norton

36-Thrust

IOCTU 2-40-

IOCTU 24-1- Spring

IOCTU 242-Thrust Ring

YoKe

Stud (

Upper

Connecting Rod'

________

Stud (Lower

Knob

__

)

/IO CTU 250- AdjusTin g

O'

----------------------
\lOCTU 251-Eccentric Cap
TiO CTU 252-Drive Collar
TlO CTU 253'
—

.IOCTU 2

—

-IOCTU 2 5 5- Lubrica+ing

YlO CTU 250 "Worm Gear
''UO

CTU

.—IO

__

IOCTU 2 59-Oil Pump Body

—

IOCTU 2

—

IO

—

IOCTU 202- Pump Qear-

)

2

CT u 2 50-Oil Pump Spacer

CTU 2 01 - Oi I Pump Cap

Screw N

Eccentric

54-ThrustWasher

Pump BracKeT

ut

57-

Pump Drive Shaft

BO-Pump Qear-Idler

Driver

RECIPROCATING K SHOULDER GRINDING ATTACHMENT

SE-670-A

PLATE 6

SE-671-A

-

/ff /n /n M M M M M m m m m m

IOCTU 1012 -

10 CTU 1013 - CluTch Cear

IOCTU 1014 - Ball Bearing

IOCTU 1015 -

10 CTU 1000-PisTon RacK Pinion
10 CTU 1001 -Tru-Arc Ring
10 CTU 1002-Taper Pin
10 CTU 1003-Piston RacK Pinion

Bushing -OuTer.

10 CTU 1004-PacKin

«

IOCTU 1005-Vim PacKing

s

______

_________

Supporting

Internal

Bal I

Clu"tch Qzar

Bearing

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

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IOCTU 1006-Taper Pm

IOCTU 1007-Cylinder End Cap
10 CTU 1008-CiasKe-t
IOCTU 1009-PacKing Supporting Ring
10 CTU 1010-End Cap
10 CTU 101

1-Laminated Shim

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

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

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

%

10 CTU 101 9 - Pinion

IOCTU 1020-Ball Bearing Cap

IOCTU 1021-CluTch Shaf+

IOCTU 1022-Piston

10 CTU 1023 -"O" Ring

IOCTU 1024-

By Pa5S Body

CROSS FEED CYLINDER

SE-760-A

PLATE 7

\

SE-761-A

1

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

i

-10 CTU 1034

■10 CTU 1035
10 CTU 1036

10 CTU 1037
10 CTU 1038
10 CTU 1039
10 CTU 1040
10 CTU 1041
10 CTU 1042
10 CTU 1043
10 CTU 1044
10 CTU 1045
10 CTU 1046
10 CTU 1047
10 CTU 1048
10 CTU 1049

§

10 CTU 1055

10 CTU 1056

10 CTU 1057

"-I0CTU 1058

-10 CTU 1059
10 CTU 1060

10 CTU 1050

10 CTU 1051

10 CTU 1052

10 CTU 1053

10 CTU 1054

10 CTU 1065

10 CTU 1061

110 CTU 1062

10 CTU 1063

10 CTU 1064

WHEEL TEED APRON

PLATE 8

SE-762-A
SE-763-A

WHEEL FEED APRON—PART NAMES

:
:

i

■u

in

10 CTU

1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038

-

1039
1040

'•1041

1042

'1043

H044

•1045

Part Name

Stop Block
Index Gear
Collar
Clutch Lever Bushing
Torrington Needle Bearing

Feed Screw Shaft

No. 1 Machine Handle
Clutch Lever

Wheel
Pawl Lock
Spring

Stop Arm Stud

Handwheel Bushing

Handwheel Stud

Wheel Feed Index Handwheel

Clutch Spool Seal

Sleeve—Short
Spool
Pinion Spring
No. 4 Machine Handle
Locking Ring

Feed Apron

10 CTU

'1046

Hub Cap

- 1047

-1048

"1049

1050 Shoe
1051 Bell Crank
1052-
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

H063 Pin

-1064 Detent Plunger

. 1065 Spring

Detent Ratchet
Detent Ratchet Housing
Index Bushing—Short

Bell

Part Name

Crank Bracket

i

1

*

:
:
;

:

I

!

\

4

10 CTU 2074

10 CTU 2075 -Washer

/ 10 CTU 2076 -Spring

/ /

/ /

jJ/

/

ISnOI /C'O^U

Ip

-Adjustment Stud

^

77 'Solenoid BracKet

2078
10 CTU 2079

^ :

§

m

-Solenoid Stop BlocK

-Cushion Plunger

2080-Cylinder Cushion Cap

o

Ft

l

I0CTU 208I - Cylinder
10 CTU 2082 - Piston

10 CTU 2083 - Cylinder Head
10 CTU 2084 - Piston Rod
10

CTU 2085 -Piston Rod Sleeve

1

o

10 CTU 2086-Valve Piston spring'
10 CTU 2087-Oil Seal

O'

10 CTU 2088-Valve
10 CTU 2089-Valve Piston
10 CTU 2090-PacKing Support Ring-lnnen
10 CTU 2091-Vim PacKing (3)
10 CTU 2092-PacKing Support Ring-Outer_

____________

Sleeve

;

_____

____

___________

10 CTU 2093
10 CTU 2094
10 CTU 2095

10 CTU 2096-Feed Screw (quide

10 CTU 2097
10 CTU 2098

10 CTU 2099-Oil WicK

-Oil Seal

-Piston Rod Support

-Ball Bearings (2.)

-Feed Screw Quide Arm

-Half Nut

_______________

_____________

______________

____

____

__

110 CTU 2100 - Oil Seal

10 CTU 2101 -Feedscrew Sleeve

10 CTU 2102 - Ball Bearing

10 CTU 2103 - Feed Screw

110 CTU 2104 -Oil WicK Strap

FEED SCREW £ PARTS

PLATE 9

SE-1006-A
SE-1007-A

10 CTU 5 64-"0"Ring

10 CTU 540-End Plate
I0CTU54I -Lever
10 CT U 5 42
I0CTU 543 -Compression Spring
I0CTU 544-Switch BracKet

-Special Nut

_____________

___________

_______________

_________

10 CTU 565-Valve- Selector

I0CTU 552 -Wheel Feed Piston

I0CTU 553-Valve Body

10 CTU 554

I0CTU 556-Valve

-Needle&ChecK Valve Body

i

;

1

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I

I

I®

<S

WORK S COOLANT

STOP-START UNIT

a

N

10 CTU 557-Cap

/l0 CTU 558- Selector Valve Body

/lO CTU 559-Manifold

:
.

:

i

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10 CTU 545-Push Rod^/
10 CTU 5 51-PicKer Feed Piston
10 CTU 546-
I0CTU 547-Lever
10 CTU 548-Piston-Right
I0CTU 549-Knob
10 CTU 555-Valve
10 CTU 563-Needle Valve Nut

Piston-Left

_____________

_____________

___________

----------

____

COMBINATION VALVE

PLATE 10

SELECTOR VALVE

I

___

10 CTU 560-Valve

___

_I0 CTU 561 - Adaptor

______10 CTU 562 -Pin

.

SE-6I4-A
SE-6I5-A

A

-

1

10 CTU 5 32 - Enclosure _____
I0CTU 533 -Screw

10 CTU 534 - Valve Sleeve

10 CTU 535 -Screw
10 CTU 5 36 -Valve Bodv

10 CTU 537 -"o"Rind

10 CTU 538 -Valve
10 CTU 5 2 0 - Knob
10 CTU 510 -Operating Lever Extz^Ii^

10 CTU 525 -Recess Cover
10 CTU 526 -<Sib Screw
10 CTU 512 -Switch Panel

-U

m

10 CTU 513 -Opera-Kind Lever

10 CTU 5
10 CTU 530 -Spring

10 CTU 516 -Pin

11

-Operating Lever Suppoi—f-

___________

________

______

__________

_____

______

~

______

__

10 CTU 515 -Indicator Pin
10 CTU 514 -Instruction Plate
10 CTU 52
10 CTU 5 I 8 -Operating Lever Button
10 CTU 527 -Spring
10 CTU 51 7 -Operating Lever 5leeve_
10 CTU 528 -Apron Cover-R.H.

9

-Switch Plunger

PUSH BUTTON APRON

IyffY-ftY-ft

__________

________

PLATE 11

jfi. jfi. /ft

______

_________

________

______

CYCLE CONTROL MECHANISM

M M M M

j

M M

SE-768-A
5E-769-A

IOCTU 1

^10 CTU 1067-Valve Adaptor
^_J

HljOCTU 1069-Bleeder Valve Body (Z)
____
/’-'^-^JO CTU 1071 -Adaptor (Z)

i

10 CTUI082-Dowel Pin(4)\\

10 CTU 1083-Pin

10 CTU I084-"0

sO

10 CTU 1085-Wiper Strip

10 CTU 1086-PacKing

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

” Ring PacKing.

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

066-'O'Ring

(Z)

0 CTU 1068-Bleeder Valve (Z)

.IOCTU 1070-

--------

"o" Ring PacKing

_I0 CTU 1
_I0 CTU 1073-Cylinder End Cap d~H.)
__

10 CTU 1074- 0 Ring PacKing

_

IOCTU 1075-Tru-Arc

_

10 CTU 1076-Cylinder

__

IOCTU 1077-Base Trough (L.H.)

_

IOCTU 1078-Piston (2)

^ IOCTU I079-"0" Ring PacKing

IOCTU 1080-seal Ring «o

^JOCTU 1081

IOCTU 109 7-Table Cylinder BracKet

O

o

o

072

-Piston Rod

-Special Screw (Z)

)

;

!

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10 CTU 1087-Tie Rod BracKet (2)
10 CTU 1088-Base Trough (R.H.)
10 CTU 1089-Cylinder End Cap (R-H.)

10 CTU 1090-Tie Rod

10 CTU 1091-PacKing Cland (Z)
10 CTU 1092-Spanner Nut (4)

10 CTU 1093-Instruction Plate
IO CTU 1094-Stop Plate (2)
10 CTU 1095
10 CTU 1096-Pin (2).

-Piston Rod BracKet

(2).

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

----------

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

------

--------

-------

-----------

---------

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

-----

HYDRAULIC TABLE TRAVERSE CYLINDER

PLATE 12

■r5;

m

f-9

m

SE-865-A

SE-866-A

'

1

IOCTU 2 0 0 O-Reverse Lever S+ud

10 CTU 2001 -Reverse Lever Knob
10CTU 2002 -Reverse. Lever Stop Pin
10 C TU 2 00 3
10 CTU 2004-Knob

IOCTU 2005-Half Cap/^
IOCTU 2006-Needle Bearing (2Y / |

IOCTU 2 007-Start-StopValveCapCovzr f

Ln

O

10 CTU 2008-Valve Operating Lever_^-Jv^

10 CTU 2009-Pin (2.)

10 CTU 2010-Valve Spool (2.
10 CTU 2011 -Valve Spool Stud

10 CTU 2012 -PacKing
10 CTU 20
10 CTU 2014-End Cover(L.H.)__

-Reverse Lever
________

________

1 3

-"O"

Ring Bushing.

__________

_____

%

)_

_____

Stud

10 CTU 2015 -5tar+-5top piston Bumper

IOCTU 2,0 I 6

IOCTU 2017 - 51-art-Stop Valve Cap

/ ^10 CTU 2 018 -"O Ring (2)

10 CTU 2 019-"O'Ring (2)

10 CTU 2020-Tru-arc Ring
^10 CTU 2021- Manifold

/ IOCTU 2 02 2

// JO CTU 202 3 - Start-Stop Valve Piston

-Table Control Valve Body

-Start-Stop Valve

IOCTU 2024-Table Reverse

Valve Sleeve

10 CTU 2 02 5-Table Reverse Shuttle

Valve

10 CTU 2026-Table Reverse

Dwell Valve

10 CTU 2 02

10 CTU 20 2 8 -Tru-arc. Ring
10 CTU 2029-Valve Cap
10 CTU 2030-End Cover (R.H.
10 CTU 20 3 I-Slow-down Valve Piston
10 CTU 20 3 2 - Slow-down Valve Sleeve

7 -Table Dwell Piston

Valve

Sleeve

)

fL fLfh'R^

/ff/fl1,/f!/ff

TABLE CONTROL VALVE

PLATE 13

MjRMM Jf.Jl.

M. J

SE-867-A
SE-868-A

Jfl

M.

J! J!.M M M M M

IOCTU 2044-Valve Cap (

I0CTU 2045 -"o" Ring (2)

IOCTU 2046-By-Pass Valve Sleeve

IOCTU 2047-Pin

(&

1

10 CTU 2033-Needle

Valve Stem (4)

10 CTU 2034

Valve Cap (4)

10 CTU 2035-Instruction

Plate

m

0

'A

\*h\

IOCTU 2048 -Spring

fa

10 CTU 2049-Valve Cap(R.H.)
10 CTU 2050
10 CTU 2051 -By-Pass Shuttle
10 CTU 2052-0"
10 CTU 2053 -Knob
10 CTU 2054-Needle Bearing (Z)

IOCTU 2055 -Instruction Plate

-By-Pass Valve Body

Ring

L.H.

)

ill

I

10 CTU 2036-Needle Valve Knob Body (4)

JO CTU 2037-Knob (2)

_I0 CTU 2038-Knob 12)

10 CTU 2039-Indent Plate
10 CTU 2040-Start-Stop Lever.
10 CTU 2041-Oiler
10 CTU 2042-Wire
10 CTU 2043-Start-Stop Plunger-

______

MAIN CONTROL VALVE PARTS

PLATE 14

IOCTU 2056- Piston

Valve YoKe

IOCTU 2057 - YoKe

10 CTU 2058

Lever Sha-ft

Lever

-Start-Stop

SE-869-A

SE-870-A

|
!

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hO

IO CTU 47 o-
'O CTU -4

10 CTU -499-

Bal I

Bearing

IO CTU 472" Screw
IO CTU

IO CTU 474-Ball Bearing

IO CTU 47 5-Ball
IO CTU 500-Boll Bearings(H-)

473-

Re-fainer

IO CTU 47 S - Clu-t-cn

IO CTU 477-

IO CTU 478

IO CTU 47 9

Machine. Handle-.

|

"Handwheel

A

Washer/

/ / \

Ring (Upper).

Br

g. Cap—/

Apron Cover

‘

Clutch Qear

-Shipper ForK

______

__________

i

IO CTU -4-98-

10 CTU 4QO-Rinion Sha-fT

IO CTU 4Q| - Bali

'MTU

IO CTU 4eB-Xcller

/ IO CTU-4-S4-idler ShafT

/ IOCTU

1

Z

IO CTU 4S 0

Bail

402- Idl^°Sto*

485- Bal I r

Bea rind

Gear

(Inner)

Bearing Cap (Lower)

-

Ball

Bearing Re-fainer

Ring (Lower)

m

■IO CTU 501- Bal I Bearing

T

J\

t

%

7

0.

_____

____

w.

/

\

\

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, 'IO CTU 494-RacK Pinion

IO CTU 495" Pi si-on

IO CTU 49 S - Spring

IO CTU 497

' IO CTU 502-

-IOCTU 487- Plug
IO CTU 488- RacK Pinion

-—

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

IO CTU

Ci

-

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

IO CTU -49 O -

v

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

.10 CTU -49 1 - Spacing

IO CTU •492-Spacing

\

---------

10 CTU 493 "Pis+on Cushioning

489-ROCK

Spacing washer

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

Shaft

Cylinder

Cap

Collar

Co liar

Spring

-

Hand Traverse-

Bal I

Apron

Beari ng

Pinion

SINGLE SPEED HAND TRAVERSE APRON

PLATE 15

SE-680-A

SE-681-A

ifl -M ifl JUi Jft M M-M.

cn

W

4P4lV*iN*NtN6 W W¥lW«WWWlWi'

HM)E m EISA.

I C-00000 1944 I

/

'•IMPORTANT

SERIAL NUMBER MUST APPEAR ON EVERY ORDER

I.I0CTU.-84O Clomp ScrowLstud)
_IOC.TU.-836 Knob
__|0 CTU-832 Tapped Bushing

IOCTU-860^)rK ShoeVerticol—/

IOCT.U

-856 Virtual Shoe Holder-

I0CTU -859 Work Shoe- Horizontal/ ,

IOCT.U - 855 Horizontal Shoe Holder?

I0C.TU.~863 Adj

Screw

Bushing —

IOCT.U-

868 Link Stu.d

IOCT.U-

IOCT.U

I0C.T.U:Q66 Clamp Spring*.

IOC.T.U.-Q67 Link

I0CTU.-853 Steodyrest Body..

/

864 Body Clamp

-865 Pivot Washer-

C\1

--------

---------

3

/

( /

----

/

STEADYREST TWO BEARING

10C.T.U-858
O0C.TU-86I Knob

\,

(§> I0C.T.U- 862 Clomp Lever

Ad).

IOC.T.U-854 Body Cover

10 C.T.U-B63Adj. Screw Bushing

I0C.TU.-869 Knurled Screw

lOCT.U-037 Ad)

r

I0C.T.U:86 I Knob

V

Straw Vertical

Screw

Horizontal

!

i

IOCT.U.

-037 LinK Stud

IOC.T.U.-B38 Pivot

ioc.t

.u

IQCXU-833Clamp Spring/

I0C.TU.-83I Dio Tool Holder Body.

-834 Body C

Wash»[

lamp

TABLE TYPE

MW

'S

’

I V "YN •

j

\

VIOCT.U -B35 Link

~*Y'0 CTU.-S33 Clamp L ever

AOJAA

IOC.T.U.-Q30 Dia. Mounted in Nib

/

- 6Y

V

FOOTSTOCK TYPE

I0CT.U S26 Knob

1OCIU:B20 ClonipScrewCStud)

_

I0C.T.U:825 Dia.Tool HolderBody

\

IOC.TU.-829 Diamond ShanK

^lOC.T.U.-827 Knurled Screw

i

a

l

■

i

DIAMOND TOOL HOLDER

SE-724-A

5E-382-A

PLATE 16

;

!

V

A

1

m

;
i

m

m

;
!

i

;

SECTION VIII. CROSS INDEX OF PART NUMBERS

i

m
m

Part No.

)

i

i

1

100-146
151-167
180-210

211-213
225-262
271-302

360-394
470-502
510-538

Wheel Slide and Parts .
Wheel Guard and Parts
Headstock—A.C. Drive

Headstock—D.C. Drive

Reciprocating and Shoulder Grinding Attachment 6

Feed Screw and Parts ....

Footstock

Hand Table Traverse Apron
Push

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

Button Apron and Cycle Control Mechanism 11

Unit

Plate Page

5

4

1

2

a

9

3

. 15

40
39
36
37
42
46
38
52

48

n

m

m
m
m

m

I

540-565

825-868

1000-1024
1025-1065
1066-1097

2000-2032
2033-2058

Please specify machine Serial Number with every inquiry or order!

Combination Valve

Diamond Tool Holders and Steadyrest
Cross Feed Cylinder
Wheel Feed Apron

Table Traverse Cylinder
Table Control Valve
Main Control Valve Parts

Please specify Plate Number on which a required part is shown

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

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

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

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

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

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

10
16

12
13

47
53

7

8

43
44
49

50
5114

m

<3

m

• -'73

m

I

m

id

1

m

fc

fe

'•J

i:

Form 1487-1P-12-51-3M

54

Printed in U.S.A.