Page 1

^NORTON
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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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U. S. A.
Page 2

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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.
Page 3

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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Page 5

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 .
19
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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.
2
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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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Page 10

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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.
.
Page 11

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SIZE
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10x18
10x36
10x48
10x72
10x96
10x120
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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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Page 12

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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
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
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 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.
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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
WHEEL SHEAVES
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
10
Page 14

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
machine and fill with a medium grade of
good machine oil.
GRINDING COOLANT
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.
11
Page 15

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
&
&
&
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
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
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Page 16

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.
■
;
‘
;
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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
i
&
Page 17

—
—
i
*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
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Page 18

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WAYS
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TABLE WAYS
SPINDLE BEARINGS
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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)
(PF V-
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SPINDLE RESERVOIR
(
7/^t) QT CAR 60 SUV.
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TUBING, EXCEPT
pp BO*
9
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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
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SE-77I-C
Lubrication Circuit Diagram
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Page 19

I
'
I
1
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
Page 20
Page 21

*
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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Page 22

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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
:
19
Page 23

Oil Pressure.
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Shoulder Gr.
S-top
Spindle Box
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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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Page 24

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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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Page 25

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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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Page 26

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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
Page 27

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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Page 28

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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.
:
!
:
25
4
Page 29

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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
■
Page 30

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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
.
l
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
F*
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32
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27
Page 31

.
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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
” wheel
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Page 32

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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.
to
make to
and
i
i
Page 33

;
32 ALUNDUM* AND 38 ALUNDUM*
For extra sensitive steels, it is suggested
i
:
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
TP:
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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.
A
poor condition of
Pat. Off.
If the
5
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31
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Page 34

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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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Page 36

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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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9
&
9
9
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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
'
a
Page 37

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
N>li-
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■' rm - -
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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Page 38

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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
Page 39

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
u
o
IO CTU I 87 - x
drive Sheave
I 8
1- Drive Shaft___
Bearind Sleeve J
RacK Pinion
m
Motor Shaft
.• V*
I O CTU 197-
1
U I 95 - Motor -
,1
U 196-VeeBelT
Sheave
I O CTU 210-
Plugging
>witch Sheave
IO CTU 200-
nve Sheave.
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 _
______
Ball Bearind
X ”
___
>
_____
10 CTU 201
10 CTU 202-
Bearing Retainer-Large
IO CT U 203" WorK
IO CTU 205-Ball Bearings(2)
7
u
^Th<zse2 par+sare.attached
HEADSTOCKv ^
AC ARRANGEMENT
♦These. 2 parts are attached
IO CTU 204- Pin
IO CTU 206- Clamp
0 CTU 207-ClampingBolt(2)
1
0 CTU 2 08-Gjrease Seal (21
♦ IO CTU 209- Clamp Nut (2 )
PLATE 1
Spindle
Ball
Sheave
SE-668-A
SE-669-A
(21
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Page 40

I
10 CTU 211 - Motor
Sheave
A: 10 CTU 21 2 -Motor
Sheave
Drive
Sheave
M
N
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PLATE 2
Page 41

jOCTU 360-FootstocK Lever
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-
IS mu ^-Bellows Insulator.
10 CTU 3 6 7 - Bel lows Rind
10 CTU 3 68 - Bel lows
10 CTU 369-
Water Cap
D.T.H.Support Pin
Handle
b
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/
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0CTU 370-L
10 CTU 371-Spindle Clamp
~
10 CTU 372 - RacK Pinion
10 CTU 3 7 3 -Knob
oc
K Pin (2.]
LEVER PINION TYPF
Rod
10 CTU 3 7 4
10 CTU 3 7 5 -
10 CTU 3 7 6-
Eccentric Shati
10 CTU 37 7 -
Spind I z Lever
10 CTU 3 78 -
Lever
I 0 C T U 3 6 3 -** 3 \
Plain Handle}*
o
-
Sleeve
Stud-(—
A *
rr.
©
Eccentric
Shaft
/
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\ \
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1
\ -10 CTU 389-Spindle Clamp- Rear
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
\
\ I0CTU 3 8 I - P
10 CTU 382-Spindle Spring
10 CTU 38 3-Spindle Stop Col la r
I0CTU 3 8 4 -Spind le Cap
00 CTU 385-Body
X
'° CTU 38 6-Spindle Clamp-Front
x10 CTU 3 8 7-
10 CTU 388‘Pinion
Housing
I 0 C T U 3 7 9-
s.
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Pin
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Clamping Bolt 12)
FootstocX
Body
<
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FOOT5TOCK
PLATE 3
m m m m /n
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SE-676-A
SE-677-A
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Page 42

;
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
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IOCTU 166-Mist (quard
.
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EEL GUARDS PARTS
SE-666-A
PLATE 4
SE-667-A
*
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Page 43

1
10 CTU 100
10 CTU 103
10 CTU 102
10 CTU 101-
10 CTU 114-
10 CTU 113
'
■
■
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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
Page 44

i
!'
;
-u
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
!
!
1
:
1
1
i
i
s
i
i
4
Page 45

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
Page 46

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
)
'
t
:
;
i
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
Page 47

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
Page 48

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
Page 49

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
Page 50

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
:
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
:
r
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
Page 51

-
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
Page 52

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)
)
;
!
h
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
'
Page 53

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
Page 54

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
|
!
I
d
Page 55

1
Ln
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.
/
\
\
\
, '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.
Page 56

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
Page 57

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.