Norton Type U-4 & LU-4 Universal Grinding Machines - Manual Grinder, Cylindrical

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NORTON

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12" TYPE U-4

14" TYPE LU-4

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UNIVERSAL

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Grinding

HAND OPERATED and

SEMIAUTOMATIC

ARRANGEMENTS

Machines

INSTRUCTION & PARTS MANUAL

No. 1017 - 4

NORTON COMPANY

MACHINE

WORCESTER, MASSACHUSETTS.

TOOL DIVISION

0/606

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NORTON

MACHINE

The descriptions, illustrations, and specifications as given,

were
policy of NORTON COMPANY to constantly improve its

products, those machines built at earlier or later dates may
differ from these details.

correct at the tim

e of printing. However, since it is the

TOOLS

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12" TYPE U-4

14" TYPE LU-4

UNIVERSAL

Grinding

HAND OPERATED and

SEMIAUTOMATIC

ARRANGEMENTS

INSTRUCTION & PARTS MANUAL

Machines

No. 1017-4

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N

orton company

W

orcester

, M

ass

. oieo6

FORM 1 01 7-4-3-67-

u.s.

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SECTION I

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Uncrating and Setup

Unpacking the machine ... .

Inspection
Lifting the machine
Ample clearance
Leveling

Electrical instructions . . . .

Headstock and footstock .. .

Mounting the grinding wheel
Lubrication
Hydraulic oil
Coolant
Precautions

Viscosity rating
Hydraulic and circulating systems

Grease selection
Oil dilution
Ways lubrication
Wheel spindle lubrication
Hand table traverse mechanism lubrication
Hydraulic oil
Filters

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SECTION II

Lubrication

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SECTION III

Construction

Tables

Table swivel adjustment
Headstock
Footstock

Wheel head assembly

Wheel spindle bearings
Wedge bolts and spindle box nuts
Spindle end thrust adjustment

Wheel feed - hand operated
Wheel feed - semiautomatic
Hydraulic power wheel positioning arrangement

Picker feed
Hand table traverse

Hydraulic table traverse

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Grinding and truing speed control —
Internal grinding attachment
Right handwheel mounting
Hydraulic and lubricating pump units

Coolant Pump

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SECTION IV

Page

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Operation

Wheel feed - hand operated

Wheel feed index - hand operated
Wheel feed - semiautomatic
Wheel feed index - semiautomatic
Two-speed hand table drive mechanism
Picker feed - hand operated machine. . .
Picker feed - semiautomatic
Table dwell controls

Headstock ...........................................................

Footstock .........................................................

Internal grinding attachment
Taper scale

Double swivel wheel head

Combination angles
Center rest
Table dogs

SWIVALIGN (Optional) ...............................

Functions - hand operated

Functions - semiautomatic ........................

Functions - internal grinding

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Grinding Principles and General Procedure

Factors governing finish
Truing principles

Truing devices
Rough truing
Finish truing
Truing summary
Truing precautions

Steadyrests
Use of the steadyrest . . .
Steadyrests required . . .

Work location

Adjustment for taper
Index setting

Wheel wear

Index of drawings

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SECTION V

SECTION VI

Replacement Parts

43

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44

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45
45

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46

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Hand Operated

1. Headstock spindle locking knob.

2. Fast-slow selector knob for
hand table drive.

3. Work start-stop-jog

4. Work rotation selector.

5. Master stop button.

6. Internal-external wheel

selector.

7. Work speed control dial.

8. Clutch lock-out
shipping only, be sure to
remove,

on plate).

9. Handwheel mechanism grease
fitting.

10. R. H. and L. H. table dwell
controls.

11. Power table speed control dial.

as per instructions

Grease monthly.

lever.

screw, (for

Fig. 1

Machine

12.

True-grind

selector.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

Power table start-stop
Dog actuated
Hand operated reverse lever.

Picker feed adjustment.

Picker feed on-off control.

Wheel feed handwheel.

"Click-count"

Swivel table adjusting

Footstock

Footstock

Footstock
Wheel spindle lubricant

Be sure a stream of lubricant shows
behind each glass at all times when
the machine

table speed control

reverse lever.

indexing mechanism.

spindle binder knob.
spindle control
spindle control

is in

N8873

lever.

mechanism.

sight glasses.

operation.

handwheel.
lever.

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Fig. 2

Semiautomatic Machine

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N8865

Electric timer for termination

1.

2.

3.

4.

5.

6.

7.

8.

9.

of automatic grinding cycle.
Headstock work speed control.
Electrical control panel. All

buttons and switches are
clearly marked as to their
function.

Work start-stop-jog
Two-speed hand table drive

mechanism.

Clutch lock-out

shipping only, be sure to
remove,

instruction

Speed selector for hand table

drive.

R. H. and L. H. table dwell

controls.

Table start-stop lever and

table speed control dial.

as indicated

plate).

screw, (for

lever.

on

10.

11.

12.

13.

14.

15.

16.

True-grind table speed selector.

Handwheel clutch.

Feed handwheel stop arm.

"Click-count" indexing mech

anism.

Control for rate of automatic

Normally,

control.

here, provided an ultra-fine

in connection with a special

grinding gage application.
Wheel slide control
Control for amount of automatic

feed at table reversals.

Approximately zero to . 003" feed

obtained
Plain or semiautomatic cycle

17.
selector.

18.

Plunge or traverse grind selector.

there is only one

The second as shown

lever.

by

setting this control.



feed.

feed

Note: Controls

the Hand Operated Machine.

not identified are similar

to

those on

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SECTION I

UNCRATING AND SET-UP

UNPACKING THE MACHINE

Be careful when removing
Boards should be removed piecemeal from the container. Shocking the
machine by heavy blows on the container must be avoided. While the
machine is sturdily
if treated

INSPECTION

removed to be sure that no damage has occurred
the entire shipment
small parts are thrown away with the packing materials.

especially wrenches and gages,
of the job.

roughly.

Inspect the machine thoroughly

constructed, there are parts which can be damaged

against the packing list. Be careful that none of the

should be given to the foreman in charge

the box or crate from the machine.

after the container has been

during transit. Check

Small parts,

LIFTING

or kerosene. Be careful lifting the machine with a crane. A good way to

do this is to insert a high grade millwright
at the ends of the base and attach a hook to the one in the rear.

can be rigged to bars and the machine lifted with little difficulty. If it is
necessary to place the sling directly
observed not to allow it to press against any of the lighter members

sections and break them when the machine is lifted.

AMPLE CLEARANCE

received with it. This provides

required.

allow ample room around the machine for operation

performance of maintenance functions.

THE MACHINE

Remove the heavy grease from the bright parts with gasoline

lifting bar in the cored holes

on

the base, special care must be

When locating the machine,

information as to the actual floor space

In addition to the requirements as shown on the blueprint,

refer to the floor plan blueprint

activities and for

A

sling

or

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LEVELING

Move the machine to the position it is to occupy and level it

from front to back and from side to side, working the finished surface

of the swivel table.
to level the machine. It is not necessary to build a special foundation
for this machine and should it be located on a concrete
desirable,

PLACE.

ELECTRICAL INSTRUCTIONS

control panel is interlocked with the enclosure doors. The door handle

must be in the "OFF"

opened. The name plate on the electrical control panel at the rear of
the machine gives the wiring diagram
of the wiring diagram is included in the control compartment of the
machine when it is shipped. Refer to this diagram before making any
electrical connections.

DO NOT UNDER ANY CIRCUMSTANCES GROUT IT INTO

The operating

Use sheet metal shims under the pads on the base

floor, which is

mechanism of the disconnect switch on the

position before the enclosure door can be

number of the machine.

One copy

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All electrical equipment
interconnected.
diagram, the incoming power lines to the terminals
Connections"

sure voltage and cycles of the power supply are the same as that shown
on the yellow tag attached to the control panel. After making incoming

line connections
the rotation is correct. The face of the wheel that contacts the work
should move downward. If rotation is in the wrong direction, reverse

two of the incoming lines.

HEADSTOCK AND FOOTSTOCK

grit becomes lodged between their bearing surfaces and the table. The
spindles of both should be thoroughly
inspected.

grinding

plate and the spindle cam lock are not engaged at the same time.
spindle cam lock is controlled

body.

results

It is

with a red tag on the disconnect switch.

check the rotation of the wheel drive motor to insure that

Wipe the headstock and footstock off, being careful that no

The centers must seat perfectly in the spindles if good

are to be obtained.

On the headstock, be careful that the plunger in the dog drive

necessary only to connect as shown in the wiring

by

on

the machine is completely

marked

wiped out and the centers carefully

the knob extending

out both sides of the

Check and be

"Customer

The

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MOUNTING THE GRINDING WHEEL

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The standard equipment grinding

12

M type U-4 Universal grinding
wheels 14 x l{ x 5", recessed one side 1/2" deep, and six internal
grinding wheels.
suit the internal

two external
principal parts; the sleeve itself which fits on the spindle and the
retaining collar, or flange, that holds the wheel on the sleeve.

with the wheels on to the sleeve and then put on the wheel.
should slip on easily.
not force it on. To do so may crack the wheel or set up stresses that
will materially weaken its structure. With the wheel in place on the
sleeve, slip on the other blotter and position the flange so the bolt holes
line up with those in the sleeve. Check the blotters
not folded or otherwise distorted.

Do not tighten the individual
up until moderately tight.
bring that up the same amount.
until the flange has been tightened. To proceed in this manner will

minimize

within the wheel.

per pounds torque.

the possibility of distorting

The sizes of the internal

grinding

The one wheel sleeve included with the machine

grinding wheels,

To mount the wheel, first slip one of the blotters

Insert the retaining

The bolts should not be tightened

quill.

In the event the hole in a wheel is undersize,

Then go to the diagonally

machine are two external grinding

The wheel sleeve consists

bolts and bring each up finger tight.

bolts down tight.

Repeat the process for all the bolts

the flange and setting up stresses

wheels included with the

grinding

Rather,

wheels vary to

will fit the

of

two

furnished

The wheel

to be

opposite bolt and

more than 15 foot

sure they are

bring one bolt

do

For the best results, the sleeve should be removed

the spindle and laid flat on a bench while mounting the wheel.

LUBRICATION

This machine was in operation

has been thoroughly

were drained
have to be refilled before the machine is started. See Section II for
complete instructions concerning lubrication.

a check be made of all oil cups and grease fittings on the machine. For

the oil cups use a highest quality general purpose oil, 275-375 S. U. V.

at 100°F. ; for the grease fittings and cups use a calcium soap base

prior to painting and packing.

To reduce the possibility

lubricated.

However, all lubrication reservoirs

of

before it was shipped and

Consequently, they will

damage it is recommended

from

that

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grease, or equivalent, of medium consistency and smooth texture,
intended for general purpose greasing.

HYDRAULIC OIL

All 12

system,

so

the hydraulic

is started. The hydraulic

reasonable

care should be taken to prevent contaminating elements

M type U-4 Universal grinders have a hydraulic

oil reservoir must be filled before the machine

system

includes a filter,

but even so,

from getting into the oil when the reservoir is being filled.

hydraulic

See Setion II for complete

oil.

instructions concerning the

COOLANT

The coolant tank, identified by the ramped outlet on the rear

of the base at the headstock end, should be filled with approximately 45

gallons of coolant.

Norton Company makes a complete

line of grinding
fluids and will fulfill any coolant requirements. Write for "WHEELMATE"
catalog No. 1776. If other than WHEELMATE is used, a coolant free from

soda is recommended.

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PRECAUTIONS

Before starting

extreme

rear position,

ends of the table.

Then centralize the table with the grinding

the machine, crank the wheel head to its

and place the headstock and footstock at the

wheel
and set the table dogs about six inches on both sides of the dog actuated
reverse lever. Be sure that the table control lever is in the "STOP"
position (inward) before starting the machine.

NOTE: The table start-
stop lever operates on a short in-and-out-motion. It starts the table
(when the pump is operating) when pulled outward.

the operator

should be familiar

with the controls

Before experimenting

as

described in the later

section.

VISCOSITY RATING

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SECTION II

LUBRICATION

Lubricating and hydraulic

lubricants

applied in the operation of NORTON grinding machines should
be of a correct type and good quality.
be valuable to the user of NORTON machines to get maximum
with minimum

down time.

To evaluate the physical properties of an oil the term
M viscosity" is used.
to flow at a given temperature

This indicates

and rate. The Saybolt Universal Viscosi

oils, greases and grinding

The following

the measured resistance of the oil

information

should

production

meter represents the U. S. standard means of determining the time in
seconds for 60 c. c. of oil to flow through a standard orifice

temperature.

The viscosities indicated

will be identified at 100°F.

at a

specific

simplicity of control.

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

is

the abbreviation for Saybolt Universal Viscosimeter.

U. S. standard

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

South American standard
British standard

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Continental standard . . .

Saybolt

Saybolt
Redwood
Engler

for

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HYDRAULIC AND CIRCULATING SYSTEMS

Oils for hydraulic

refined to maintain

stability of the oil or freedom from oxidation

the limits of temperature and pressure

must function. The residues

oil are in the form of gum and varnish

sensitive valves of a hydraulic

and circulating systems must be well

under which an oil of this type

formed during the oxidation

which readily disturbs

control mechanism.

the cause of plugged pipe lines in the central

"pour point" of an oil, indicating
a fluid, will present a problem
long periods

of

time to low temperatures, or when the new oil in drums

the point at which an oil is no longer

only when the equipment is exposed for

lubricating

within

of a

This also might be

system. The

petroleum

the

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is stored in the open with no physical protection,
function of the hydraulic system, a high grade oil, well refined and
free from impurities,

GREASE SELECTION

The selection of the correct grease will be governed by

the speed, temperature, and exposure under which the machine must
operate. Ball bearings at low temperatures require a soft cup grease
which possesses a high melting point. When moisture is present, use
a water insoluble grease. All greases must be stable, in a pure

form, free from fillers and of good quality. The grease should be

kept free from dirt and all forms of contamination.
bearing manufacturers recommend that a ball bearing be filled from
one third to one half capacity and be approximately maintained
level. Greases must not bleed in operation. When the oil bleeds

from the soap in a grease, there is the danger that the dried soap left
by the separation
therefore, is of extreme importance

OIL DILUTION

The NORTON 12

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

must be used.

will be the cause of mechanical failure.

in

grease selection.

,r type U-4 Universal Grinding Machine

To assure correct

In general,

at

Stability,

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As nearly as possible,

coolant splash, spray, or mist from entering the hydraulic reservoir

which would tend to form a harmful emulsion or sludge.

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

In any event, we recommend that the hydraulic

oil reservoirs be drained and refilled after 500 hours of use.

WAYS LUBRICATION

The ways lubricant reservoir
ways) is mounted on the outside of the machine as shown on page 8.
The rate of flow of the oil to the ways is controlled
separate valves for the flat way and the vee way. The location of
these is indicated on page 8.

care has been taken to prevent

(for table and wheel slide

at

the manifold by

and spindle

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The capacity of the reservoir is approximately 3^ gallons.

Measure the initial filling to be sure that the tank is intact and
unobstructed. Fill to the level shown on the sight gage. Allow the
machine to run for a short time, check, and add oil as necessary to
restore the level.

Use a highest quality lubricating oil 300-475 S.U.V. at

100°F. with oily additive for desired film strength.

The oil is filtered during circulation.
must be changed periodically if the system is to function properly.
The interval between changes will depend on the general conditions of
the area in which the machine is set up. Replacement elements may
be purchased from Norton Company.

The rate of flow of oil to the ways is somewhat critical.
Too little oil will result in excess wear. Too much oil will cause the
table to float and this will affect the grinding action.
therefore, that the way covers should be removed periodically, while
the machine is in operation, so the quantity of oil on the ways may be

checked.

The filter element

We recommend,

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The pressure should be set at five pounds.

in one side of the Tee directly above the pressure

replaced by a gage to check the pressure in the system. The cap may
be removed from the top of the pressure
driver can be used to make the necessary adjustments. The pressure
has been set at the factory and should not require adjustment for long
periods of time.

WHEEL SPINDLE LUBRICATION

The wheel spindle lubricant reservoir is mounted on the
outside of the machine below the wheel drive belt guard.
pumped through a pressure switch, to the wheel spindle. The flow of
oil may be seen through the sight glasses on front of the spindle housing.

A pressure switch prevents the wheel drive motor from
starting
line. However, an oil stream should be seen flowing behind the sight
glasses at all times when the grinding wheel is running.
there is intermittent flow, cut off power to the machine immediately by
pushing the MASTER STOP BUTTON, and remedy the cause of the
stoppage.

until adequate pressure

exists in the spindle lubricant delivery

relief valve and a screw

The pipe plug

relief valve may be

The oil is

If it

stops or

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The capacity of the reservoir is approximately
Fill the reservoir with the highest quality spindle oil of 55-85 S. U. V.
at 100°F.

This oil should have inhibitors for rust and oxidation.

gallons.

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Fig. 3

Wheel spindle lubricant reservoir.

1.
gallons of highest quality spindle oil of 55-85 S. U. V.

2. Ways lubricant reservoir. Fill with approximately 3-| gallons of
highest lubricating oil of 300-475 S. U. V. with oily additive for
desired film strength.

3. Hydraulic
and replace when required.

4.

Hydraulic system relief valve.

be maintained at approximately 200 pounds.

Relief valves for wheel spindle and ways lubricant delivery systems.

5.

Maintain settings to provide five pounds of pressure.

system oil filter. Inspect filtering element periodically,

Fill with approximately 31-

Hydraulic

system pressure should

cs

6.

Ways lubricant

Maintain

set so as to M over-lubricate. M

settings

control valves.

to

provide adequate

These are clearly

lubrication, but do not

marked.

9

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Setting for amount of initial rapid positioning feed on machines

7.

arranged

Needle valve (there are two) for forward and backward

8.

cushioning

for semiautomatic

strokes in semiautomatic

operation.

See page 27.

operation.

See page 27.

HAND TABLE TRAVERSE MECHANISM LUBRICATION

This two-speed hand table traverse mechanism
means of grease fittings.
wheel; the other two are on front of the apron.

One of these is clearly
approximately
on the instruction
apply grease to these fittings

Use a good grade of medium all-purpose grease in these fittings.

HYDRAULIC OIL

machine, below the table ways, and is confined to the right end of the

machine.

back side of the base immediately

side of the base immediately
is beneath the area indicated

valves (#6) in the illustration

at

the same level beneath the hand wheel. As indicated

plate attached adjacent to the fitting on the right,

The hydraulic

The reservoir is filled through a rectangular

One is on top of the apron, behind the hand

in

view to the right, and the other is

monthly.

oil reservoir is within the base of the

adjacent to the opening in the back
adjacent
for the ways lubricant

on

to

page 9 .

the pump units.

is

lubricated by

opening in the

The opening

flow control

Fill this reservoir,

funnel with a flexible

is located on front of the machine.
of the machines illustrated in figures
capacity is approximately 35 gallons.

For this purpose
oil.
inhibitors

before it goes into the system. It also must pass through a strainer

This should be of 145-170 S.U. V. at 100°F. and should contain

for rust and oxidation.

In the 12

neck, to the level shown on the sight gage which

m

Type U-4 Universal, the hydraulic

using a pump and hose unit or a

This sight gage is shown on front

1

and 2, pages iii and iv. The

use only the highest quality of hydraulic

oil is filtered

in

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the suction line as it is drawn from the reservoir,
be cleaned regularly to prevent its becoming clogged and interfering
with oil delivery.

FILTERS

A filter on the discharge side of the hydraulic oil pump
filters the oil immediately before it enters the system. This is shown
as #3 in the illustration on page 8. This filter is a replacement
cartridge type. The cartridge is easily replaced by unscrewing the

metal bowl from the cap. When this is done, the old cartridge is easily
slipped out and the new one put in.

It is important that the filter element be changed at regular
intervals to avoid starving the system, and to minimize the possibility
of foreign matter entering the system and interfering with the operation

of valves.
will depend to a large extent, upon the general conditions in the area in

which the machine operates. Replacement cartridges are available

from Norton Company.

are bowl-type filters in the ways and the wheel spindle lubricant
delivery lines.

to assure efficient delivery of lubricants in these systems.

The frequency with which the filter element must be changed

Reference to the illustration on page 8 will show that there

These filters should also be given periodic attention,

This strainer must

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The strainer at the intake point of the suction line in the
hydraulic reservoir has been mentioned.
regularly to assure efficient delivery of the hydraulic oil through the
system.

This must also be cleaned

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TABLES

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SECTION III

CONSTRUCTION

The 12" type U-4 Universal Grinding Machine has two tables;
the sliding table and the swivel table. The sliding table travels in the
flat and vee ways of the base and supports the swivel table.

A pivot joins

the two tables at the center and is the point about which the swivel table

is moved when adjusting to grind the work straight or to produce some
definite taper.

TABLE SWIVEL ADJUSTMENT

The swivel table adjustment mechanism has a screw and

swiveling full-nut feed, positive in both directions.

The graduated scale
is intended as a guide, only, and final adjustments for correct taper
must be made by trial.

Use the socket wrench furnished with the machine for making
adjustments. Note that the swivel table is clamped by gibs at both ends
which must be loosened before adjusting and tightened when the final
setting has been established.

For machines equipped with "SWIVALIGN" dual electric
swivel table adjustment, see instructions in Section IV.

HEADSTOCK

The headstock is a universal

360° with a calibrated scale about the base.

type. It swivels through a full

It

can be used for either dead
center or live spindle operation. It has a variable speed work drive in a
range of 15-394 r. p. m.

The principal casting which is semisteel, rests upon the
headstock base and swivels about a tapered pivot.
the entire mechanism

including the work drive motor.

It

supports and contains

The work drive motor is mounted on an adjustable base on top

of the headstock. The motor can be adjusted up or down by turning the

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adjusting screw with a socket wrench after first loosening
nut. When the motor base assembly is removed, the interior
headstock is accessible.

The motor drives through a single vee belt (an identifying
tag is attached to the belt guard) to a two step sheave. With the belt
driving over the inner grooves of the speed reducer sheave, the work
speed range is 15 to 150 r. p. m. ; over the outer diameter 39 to 394
r. p. m. In the lower speed range 315 pounds inches of torque are

produced; in the higher speed ranges 120 pounds inches torque.

Double vee belts drive down from the back pair of belt

grooves in the upper speed reducer sheave to the spindle sheave,
spindle sheave is attached to the face plate by the four socket set
screws in the face plate. For live spindle operation

attaches to the spindle indirectly
the face plate engaging one of the eight holes in the drive flange
immediately behind the spindle sheave.

The headstock spindle extends through the entire head-
stock with the face plate on one end and the spindle nose and chuck
at the other.

diameter hole extends through the spindle.
tapered to #12 Jarno at both ends and an adapter is provided with a
#9 Jarno taper I. D. The standard
is #9 Jarno taper. The spindle nose is 5" D-l cam lock type.

It

rotates

in

two sets of preloaded

by

means of the spindle drive pin in

This center hole is

center furnished

the sheave

ball bearings. A l\

with the machine

the locking

of

the

The

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The spindle bearings were lubricated

lation and should not require further attention

The spindle may be locked for dead center operation by

engaging the spindle latch in the teeth of the locking gear.
locking gear is keyed to the spindle toward the nose end. It can be
seen when the motor base assembly is removed. Locking is accom

plished by a simple latching action. The latch is a circular piece
with a flat.

gear and does not interfere with rotation.

face plate and the spanner

1 6P capscrews through the holes in the sheave. Rotate the sheave

until the corresponding

holes in the drive flange are tapped.
bottom.
and the sheave can be backed off the spindle. The bearings in the

In the unlocked position this flat is opposite

To disassemble the headstock spindle,

nut immediately behind it. Insert two 3/8 -

holes in the drive flange are lined up. The

Run the screws in until they

Now, by taking up alternately on each screw, the drive flange

at

the time of instal

for some time.

first remove the

The

the locking



i



13

sheave are preloaded, so note the position of installation which must be
duplicated at reassembly.

Next, remove the chuck from the other end of the spindle

and the split ring that surrounds

to relieve the preload

You do this by loosening
gear.
assembly.
nose end. Again, note the arrangement of the ball bearings so the
correct preload

FOOTSTOCK

operated type which permits
best suited to the particular job. The footstock spindle may be

locked in any desired position

front of the footstock body.

#9 Jarno taper.
gibs which are tightened by the two hex nuts on the front of the foot
stock body.

It

can be reached through the opening below the motor base

The spindle is now free and can be drawn out from the

will be applied when the spindle is reassembled.

The footstock is a combination

on

the ball bearings at this end of the spindle.

the spanner nut to the inside of the locking

The footstock is clamped to the edges of the table by

the spindle.

selection of the type of spindle control

by

tightening

The center hole in the spindle has a

It is

lever and handwheel

the knob mounted on the

necessary, now,



«

u

WHEEL

segments; the compound base, the compound swivel, the wrheel head
slide, the wheel head swivel, and the wheel head.
permit both the external
the feed operated in any direction.

It contains

is the unique feature of this machine
wheel feed in any direction.

the compound

base.

machine, the hydraulic

for accurate positioning.
that brings the grinding

HEAD ASSEMBLY

The wheel head assembly is made up of five complete

and internal

The compound

the bevel gear feed mechanism.

base and the compound swivel to facilitate adjustment.

The compound

It contains

The circular base of this casting is calibrated through 180°

the feed screw and, in addition, on the semiautomatic

base is bolted to a boss on the machine base.

There are antifriction

swivel is mounted directly

wheel feed mechanism.

On the left hand side there is a positive

wheel into the 90° feed position for straight in-

The double swivels

wheel to be set at any angle and

The use of the bevel gears

which permits

positive, accurate
bearings

above the compound

between

stop

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14

feed. Before adjusting

for a feed angle other than straight,

this positive stop is swung up out of the way.

The compound swivel can be secured at any angle by tight

ening the clamping screws on both sides of the casting.

The wheel head slide traverses on a flat and a vee way in

the compound swivel.

The arrows on the right side of the assembly

traverse range of the wheel feed half nut.

The wheel head slide is
between the wheel head and the
compound swivel.

The half nut

which runs on the feed screw is

mounted within this casting.

There
is an arrow on the right hand side
of the wheel head slide.

As the side
moves forward and backward the
relative

position of the half nut on
the feed screw is indicated by this
arrow moving between the two
arrows on the lower casting.

If,
for example, the angular setting
is such that the wheel cannot feed

all the way in to the work the
relative

position of the half nut can
be moved toward the work and the
relative

position of the half nut on
the feed screw can be adjusted to
permit a grinding

feed.

be

show the

sure



The wheel head swivel

supports

to the wheel head slide.

the wheel head and attaches

It is

graduated 20° -0- 20° on each side

and may be secured at any angle by
taking up on the two bolts, one on
each side of the casting. This makes

it possible to have the wheel set at
any angle regardless

of feed.

The scale is on the back

of

the direction

end of the wheel slide.

Fig. 5

Wheel Slide Assembly

a.

Wheel Head

b.

Wheel Head Swivel

c.

Wheel

d. Compound

Head Slide

Swivel

15

The wheel head contains a plain bearing

grinding.

14" diameter with a 5" hole.
on top of the wheel head, hinges forward, and clamps to the lower front
edge of the wheel head when in the grinding position.
head member
by turning the adjusting pinion (H in Figure 3) with a 7/8" open end
wrench.
before trying to move it.

WHEEL SPINDLE BEARINGS (See Page 66)

promiscuous tampering
only when the need has been definitely
very slight adjustment and repeat if necessary.

ening too much and causing overheating

The standard grinding

is

easily positioned

Be sure to loosen hex nuts " J" on both sides of the wheel head

N ot e :

Examination of wheel head "a" will show that there is an

amount of extra adjustment
work clearance for special jobs.

While these bearings are adjustable, there should be no

with them.

wheel furnished with the machine is

The internal

into or away from the work as required

grinding attachment is bolted

to

provide additional wheel-

Such adjustments should be made

proved.

or

seizure.

spindle for external

The upper wheel

In this case, make a

This is to avoid tight



a

Ll

a

Adjust but one bearing at a time,
day or so before adjusting
cooler bearing

they are cold.

bolts of the bearing concerned. This is done by loosening
which hold wedge bolts U4-758.

bearing bore) is obtained

done by tightening

turn of the spindle box nut draws the bearing into its case to the extent
of giving a reduction

spindle box nut.
point to which it has been drawn.
nuts U4-782.
been any tendency toward twist.
up snugly (do not overtighten),

tightly.

is

the one to adjust first.

In preparing to adjust a bearing,

Adjustment of the bearing

spindle box nuts U4-754 and U4-775.

of

After the bearing

This is important.

This will straighten

the second bearing, if this is necessary. The

(reduction

by

drawing

approximately . 001" in the bearing bore.

has been drawn into its case, loosen the

bring up the box nut snugly, but not too

the bearing into its case. This is

The bearing

Now tighten the wedge bolts by turning

the bearing

After the wedge bolts have been brought

and work the machine

Do not adjust bearings

be

sure to loosen the wedge

in

the diameter of the

A

will remain at the

in

its case if there has

when

nuts U4-782

one-eighth

for a

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16

ii

WEDGE BOLTS AND SPINDLE BOX NUTS

The wedge bolt tightening

should be brought up snugly - not excessively tight.

straighten

the bearing in its case, and to do this effectively, the spindle
box nuts must be loose. After this is done, tighten the spindle box nuts
firmly,

but not too tightly. Hammering on the nuts will set up strains

in the bearings which may lead to trouble.

SPINDLE END THRUST ADJUSTMENT

When required,

at the end of the spindle worm.

this adjustment is made by two spanner nuts

One nut locks the other in place.
sure to make this adjustment in small increments.
ment may bind the spindle.

Do not peen these nuts over as a locking

precaution, since this will prevent the proper seating of the nuts against

the worm.

WHEEL FEED - Hand Operated

The manual grinding feed on both the hand operated and

semiautomatic

machine is the same.

mitted through a gear train (apron) on the front of the machine. A
shaft extends through the base to the bevel gear assembly on the under
side of the compound base.

A

beveled gear on the top side of the

compound base is driven by the assembly below. This beveled gear, in

turn, drives another beveled gear which is keyed to the front end of the
feed screw within the compound swivel. The feed screw drives a half
nut attached to the underside

of

the wheel head slide to traverse the

wheel.

is

extremely important.

The wedge bolts

Too tight an adjust

The handwheel drive is trans

They

Be

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ff

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WHEEL FEED - Semiautomatic

The machine arranged
be operated manually
operated

arrangement is essentially the same as that on the hand

as a

plain machine.

for semiautomatic

The construction of the hand

operation can also

operated machine.

The semiautomatic

that advances the wheel rapidly to the grinding

wheel feed is an hydraulic

position,

arrangement

feeds the wheel

slowly for grinding, and retracts the grinding wheel when the work is to

size.

The initial rapid thrust comes from the hydraulic

cylinder

at the back end of the wheel slide directly on to the end of the feed screw.

This thrust advances the wheel head, the half nut, and the feed screw.

1

17

In order to maintain the mechanical feed, the feed screw is arranged
to slide along through the beveled drive gear.
wheel is moved into position for grinding

As a result, the

and the relative position of

the half nut on the feed screw is unchanged.

It is important

feed screw be maintained because the grinding

by revolving

the feed screw to move the half nut. The final grinding
feed is a positive mechanical drive.
at the extreme

right hand section of the wheel feed apron actuates the

that the relationship of the half nut and the

feed is accomplished

The hydraulic

cylinder

located

same gear train as is used for hand feeding the wheel so the hand-
wheel turns with the movement
feed. The grinding feed cylinder
machine,

at

right angles to the direction

of

the wheel slide during the grinding

operates parallel to the front of the

of

wheel feed, and is some

times referred to as the cross feed cylinder.

When the wheel retracts the functions

grinding

feed cylinder reverses, rotating

half nut to its starting position.

the feed screw to return the

The wheel feed cylinder retracts

are reversed.

further to clear the work area for unloading and loading.

HYDRAULIC POWER WHEEL POSITIONING ARRANGEMENT

The



This is an optional feature available
machines.
intended

As the name implies,

only to relieve

the operator of all but the actual grinding

It is not intended to be a grinding

it is a

feed.

positioning

for hand operated

arrangement

feed.

An oil motor is mounted on the rear wall of the base directly
below the wheel head assembly.
bevel gear box on the underside

It is
of

connected from the rear to the

the compound base through a gear
train similar to the hand traverse gear train on the front of the machine.
Feed, then, is accomplished by rotating

the feed screw just as with

manual feed.

In operation

in which the operating

the wheel head will traverse in the same direction

lever is moved.

PICKER FEED

This machine, in both the hand operated and semiautomatic

arrangements,

feed at each table reversal for traverse

is

equipped with a picker feed to provide automatic wheel

grinding work.

18

1

Hand Operated Machine - On the hand operated
hydraulic
mechanical linkage which extends around the handwheel. On the up
stroke of the cylinder the linkage is actuated to turn the handwheel and

feed the grinding wheel. The amount of wheel feed at each pick is

adjustable
the down stroke of the cylinder the action of the linkage is reversed.
The pawl gear revolves freely in this direction

for the next pick.

machine is integral
adjustable up to . 003

a total of . 075" of wheel feed. The control of the picker feed is a
metering action that takes place in the hydraulic combination valve.
Picker feed is activated

"Plunge" to "Traverse"

control valve adjacent to the wheel feed handwheel can be completely
closed.

HAND TABLE TRAVERSE

cylinder to the right of the wheel feed handwheel actuates a

up to .

Semiautomatic

005" of wheel feed at each reversal of the table.

and it is repositioned

Machine - Picker feed on the semiautomatic

with the hydraulic

,f of wheel movement

automatically when the selector is turned from

grinding.

system.

If the picker is not wanted, the

The amount of feed is

at

each table reversal up to

machine a



On

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The table is traversed
handwheel on the front of the machine.
is transmitted

the table ways. The pinion gear drives a rack on the underside
traverse table.
slow speed. The speed range is selected by either pushing in or pulling
out the knob on the handwheel.

the table . 125" in slow speed; 1. 073" in fast speed.

shaft to measure the amount of table movement
calibration represents . 001" of table movement

screw-lock

position.

through a gear train (apron) to a pinion gear between

The traverse apron is arranged to provide a fast and a

There is an adjustable, graduated collar on the handwheel

on

the inside of the handwheel clamps it at any desired

manually by means of the left hand

The rotation

One full turn of the handwheel moves

in

in

of

the handwheel

slow speed.

the slow range. The

of

Each

the

HYDRAULIC TABLE TRAVERSE

The table is traversed hydraulically by an hydraulic
which is attached to the underside of the traverse table.
are fixed at both ends of the base and the cylinder

The hydraulic
The table cylinder

started after having been idle for any length of time, the table should be

fluid enters the cylinder

bleeds off air automatically.

through the hollow piston rods.

moves with the table.

When the machine is

The piston rods

cylinder

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19

traversed under power several

entered the system. Traverse speed is fully adjustable through a
range of approximately 2 to 240

times to bleed off any air that may have

M per minute by means of the table

speed control dial.

GRINDING AND TRUING SPEED CONTROL

Because the two distinct

traversing the table in entirely different

table traverse

speed controls are provided.

actions, grinding

speed ranges,

By means of the Grinding

and truing,

separate power

require

-

Truing speed control selector the desired speed range is activated without
effecting the setting in the other range.
ranges. The table speed for grinding
dial.

The table speed for truing is adjusted by positioning the slotted stop

on the upper right hand corner of the identification

The speeds are adjustable

is

set with the table speed control

plate behind the

in

both

selector knob.

INTERNAL GRINDING ATTACHMENT

This unit is of the hinged type and is driven by a flat belt.

With the spindle that is supplied as standard equipment, a speed of

15, 000 r. p. m. is obtained. A variety of spindles varying in speed from
12, 500 to 25, 000 r. p. m. are available at extra cost.

the way.

When not in use, the internal

If the unit is used only occasionally,

spindle may be swung up out of

it

may be entirely removed

from the machine.

RIGHT HAND WHEEL MOUNTING

The standard arrangement of the wheel head is for mounting
the grinding
on both ends of the spindle, however, is the same,

wheel on the left hand end of the wheel spindle.

so

The taper

the wheel sleeve
can be mounted on either end. In order to use the wheel mounted on the
right hand end of the spindle a special wheel guard and belt guard are

required,
controls are needed for reversing the direction
This equipment
a field machine not so equipped

and because the wheel drive motor must be turned 180°,

of

rotation of the motor.

is

optional with a new machine and may be purchased for

at

the factory.

HYDRAULIC AND LUBRICATING PUMP UNITS

These units are shown in the illustration on page 8. There is

a separate pump for the hydraulic
and for the wheel spindle lubricating

oil, and separate

units.

Each pump has its separate

pumps for the ways

ri

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20

n

filter and relief valve, and each relief valve is equipped with a fitting
to permit taking pressure readings with a gage. The hydraulic oil
pressure should be kept at 200 pounds, and the pressure for lubricant
delivery to the ways and to the wheel spindle should be 5 pounds.

hydraulic oil pressure is adjusted by turning the large handle on the

relief valve; the ways and spindle lubricating
adjusted by removing the pressure relief valve caps, and adjusting the
screws inside.

COOLANT PUMP

The coolant pump is an immersion

unit, motor and pump, suspended through an opening in the rear corner
of the coolant tank cover.
motor along with the wheel drive motor and hydraulic pump motor,
start when the master start button is pushed.

machine, start and stop can be controlled either manually or automatic
ally in the grinding cycle.

To remove the pump, first remove the front cover on the

coolant tank. Stand at the rear of the machine and slide the rear

cover forward.
allowing the cover and pump together to swing upward pivoting on the
shelf at the rear of the tank. Once the cover and pump have been
removed from the machine,

cover.

Handles are provided so the front edge is lifted first

On the hand operated machine the pump

the pump can be disconnected from the

systems pressures are

type. It is a complete

On the semiautomatic

The

1

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WHEEL FEED - Hand Operated

21

SECTION IV

OPERATION

r

r

The grinding wheel is traversed into and away from the work
manually by means of the right hand handwheel on the front of the
machine (M in figure 6). Turning the handwheel clockwise retracts the
wheel, counterclockwise advances the wheel. Each graduation on the
periphery
complete revolution of the handwheel moves the wheel . 050" (. 100
work diameter).

WHEEL FEED INDEX - Hand Operated

an adjustment for positive control of the wheel feed in increments as
small as . 00005" of wheel movement.

outward it disengages the handwheel so it swings freely.

is pushed inward it can be turned clockwise. This rotates the hand-

wheel in the same direction but it does not move the grinding wheel.
The

knob gives off a clicking sound as it is rotated and each click is the

equivalent of . 00005" of wheel movement.

stock to be removed from the work to attain finished size. Then, use

the handwheel to crank the wheel in until it just touches the work. Now,

swing the positive stop arm up into position,
and swing the handwheel clockwise until the amount of stock to be
removed is indicated by the calibrations on the periphery
that the graduations
feeding the grinding wheel inward . 00005" reduces the diameter . 0001" ).

Release the index knob and turn the handwheel counterclockwise to feed
the wheel into the work until the positive stop on the handwheel contacts
the positive stop arm at which point the work should be to size.

of

the handwheel represents . 0005" of wheel feed. One

The wheel feed index mechanism built into the handwheel is

When the index knob is pulled

When the knob

To set the wheel feed index, first determine

pull the index knob outward

represent wheel feed, not work diameter

the amount of

(keep in mind

reduction,

n on

If there is only a small amount of stock to be removed from
the work to establish finished size more accurate results can be obtained
by using the click count mechanism to measure the wheel movement.

Pull the index knob outward and turn the handwheel counterclockwise to

22

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:

1

,

A

oo

5

R

fig. 6

OPERATING CONTROLS

(Hand operated machine)

A.

Push button control panel, all controls clearly marked as

to their function.

D.

Work speed control dial.

F.

Left hand and right hand table dwell controls.

Power table speed control dial.

G.

Grinding and truing table speed control.

H.

Hand operated table reverse lever.

I.

Control for amount of feed at table reversals.

J.

K.

Picker feed On-Off control.

L.

Power
Wheel feed handwheel.

M.

N.

Wheel feed index.

O.

Dog actuated table reverse lever.
Table Start-Stop lever.

P.

Two-speed table drive handwheel.

Q.

Hand table traverse fast-slow speed selector.

R.
S.

Work Start-Stop-Jog lever.

wheel positioning control (optional).

1
1

i

L

1
1

1

1

l

V,

»

t

■

i

1

1

i

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:

23

to bring the stop to the stop arm.

wise, one "click

” for each . 0001" of work diameter

Push in the index knob, turn it clock-

reduction required.
Release the index knob and turn the handwheel counterclockwise back to
the positive stop.

In the event the work does not come to size on this first

setup, use the click count mechanism to correct the condition.

Once the positive stop has been established sizing will hold

indefinitely

so

long as provision is made for wheel wear.

When turning
the handwheel to retract the grinding wheel, keep track of the number of
full revolutions so the wheel can be brought back in again to the starting
position.

WHEEL FEED - Semiautomatic

The machine arranged
be used for hand operation and the instructions
when selector

"I" in figure 7 is set on "Plain. "

When the selector
functions are started and stopped by actuating the cycle control lever

(K in figure 7). To start grinding,

will rotate, the coolant will flow, and the wheel slide will advance,

rapidly at first to the grinding position and then slowly for grinding.

grinding feed continues until the work is to size. The wheel dwells

momentarily to round up the work, then retracts

for semiautomatic operation can also

is

set to "Semiautomatic"

pull the cycle control lever; the work

above are applicable

all the machine

without further attention

The

from the operator.

To set up for semiautomatic operation:

turn the cycle selector

1.

turn the coolant control selector to "Automatic"

2.

set Plunge grind - Traverse grind selector

3.

switch to "Timer"

(H in figure 7) as required

set the selector for plain or semiautomatic to

4.
semiautomatic

With the controls set this way the machine w'ill operate auto

matically once the cycle control lever has been pulled.

The cycle may

be terminated at any point by pushing the cycle control lever.

not upset the cycling.

This will



24

1

1

WHEEL FEED INDEX - Semiautomatic

To set the wheel feed index for semiautomatic

grinding follow this procedure:

With the workpiece in place and the machine running, push

1.
the cycle control lever (K in figure 7) to put the grinding

wheel in the back position.

2. Declutch the handwheel by lifting the handwheel clutch (O
in figure 7). This disconnects the grinding feed cylinder

and the wheel can be traversed manually along the feed
screw.

Rotate the handwheel clockwise several turns to move the

3.

wheel back further than it was carried by the hydraulic

traverse

Close the wheel feed control valve (J in figure 7).

4.
valve has a L. H. thread and is closed by unscrewing

Pull the cycle control lever (K) to bring the wheel forward.

5.

On this movement the wheel should stop approximately

l

n short of the work. If the wheel goes beyond this

point push the cycle control lever immediately

the wheel back and turn the handwheel clockwise a few

more turns.

as necessary until the wheel does stop short of the work.

in

step 1.

Try the hydraulic feed again and adjust

plunge

to

This

send

.

i

i

10.

6.

When the wheel has stopped short of the work on the

hydraulic movement,
contact with the work by turning the handwheel counter
clockwise.

Reclutch the handwheel by pushing lever "O" down.

7.

Pull the index knob (M in figure 7) outward and turn the hand-

8.

wheel counterclockwise until the stop contacts the positive

stop arm.

Determine the amount of stock to be removed from the work

9.

to reach finished size.
clockwise; one click for each . 0001

Push the cycle control lever to send the wheel back and open

the feed control valve slightly.

feed the wheel manually into light

Push the index knob in and turn it

11 of stock to be removed.



25

Pull the cycle control lever.

11.
will feed rapidly to light contact with the work, cushion,

On this movement the wheel

and go into the slow grinding feed.

12.

Adjust the feed control valve for the most suitable grinding

feed rate for the particular job.

13.

The grinding feed will end when the stop on the handwheel

contacts the positive stop arm and the work should be to
size,

If it is not to size, use the index knob as necessary

to adjust.

When the amount of feed and the rate of feed have been

14.

established, determine

the amount of time required to
reach finished size plus a few seconds to round up the
work and set the electric timer on the electrical
controls cabinet.

The relative position of the wheel feed half nut on the feed

screw determines

the point at which the initial rapid positioning

stroke
will end. This feed must stop before the wheel contacts the work. If
the work, therefore, coming to the machine is not sized consistently,
the rapid traverse stroke should be adjusted as in steps 5 and 6 to the

largest oversize condition and the timer adjusted accordingly.

To correct for over size in step 13, push in the index knob

and turn it clockwise.

To correct for undersize:

pull the index knob out.

1.

2.

lift the stop arm clear of the stop.

3.

turn the handwheel counterclockwise a greater

than the undersize using the calibrations to determine
the distance moved.

4.

release the index knob.

turn the handwheel clockwise until the stop arm can be

5.

engaged.

6.

grinding should now be oversize, so adjust accordingly.

amount

26

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B R

T

S A

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L

oo

ooo
ooo

A.

Electrical controls panel.
Work Start-Stop-Jog

B.

Left hand and right hand table dwell controls.

C.

Power table speed control dial.

D.

Grinding and truing table speed control.

E.
F.

Hand operated table reverse lever.
Wheel feed handwheel.

G.
H.

Plunge grind-Traverse

Selector for plain or semiautomatic operation.

I.

Control for amount of feed at table reversals.

J.

K.

Semiautomatic

L.

Feed rate control for plunge grinding.
Wheel feed index.

M.

Pointer for determining the amount of wheel feed.

N.

Wheel feed handwheel clutch.

O.

Dog actuated table reverse lever.

P.

Table Start-Stop lever.

Q.

Two-speed hand table drive.

R.

Headstock work speed control.

s.

Electric timer.

T.

o

p

o

o

C

D

E

fig. 7
OPERATING CONTROLS
(semiautomatic

lever.

cycle control lever.

machine)

grind selector.

H

1
1

&

1

1

27

To adjust the length of the initial rapid positioning feed, turn
screw 7 in figure 3 in or out to decrease or increase. Use the two
needle valves (one near the end of the wheel feed cylinder and the other
on the left hand side of the cylinder) to adjust the cushioning rate of the
forward and backward cushioning strokes.

TWO-SPEED HAND TABLE DRIVE MECHANISM

As indicated by its designation,
speed hand drive of the table.
and semiautomatic

arrangements of the 12" Type U-4 Universal Grinder.

It is

furnished

this mechanism provides two-

for both the hand operated

It is identified by 11 QM in figure 6, page 22, and by "R" on page 26.

in figure 6.

Fast or slow speed selection is made by use of control nRn

Pushing this in gives the slow speed, setting it in the "out"

position provides the fast speed.

In slow speed, a total of . 125" of table movement is obtained
with one full turn of the handwheel. A total table movement of 1. 073" is
obtained in fast speed for one full turn of the handwheel.

An adjustable, graduated
graduated in . 001

M increments up to . 125".

operation of the table.

The scale is easily n

scale behind the handwheel is

This is used for slow speed

zeroed-in" at any point of

table position by merely releasing it by turning the small screw-lock that

will be seen on the inside of the handwheel. Small setting knobs on the
scale permit it to be quickly brought to zero against the scribe-line on
the machine base.

Relocking the scale by turning back the screw-lock, will then
make the scale turn as the handwheel is revolved, and a reading in . 001
increments is provided of table movement.

Normally, in operating the

table drive handwheel in this way, it is first turned slightly in the desired

direction to take up backlash, the scale then set at zero and locked, and

M

readings are taken as the handwheel is turned.

HYDRAULIC TABLE TRAVERSE

Hydraulic power table traverse is also furnished for both the

hand operated and semiautomatic

semiautomatic, this means that it is ideally arranged
of traverse and plunge-grind

arrangements of the machine. With the

to do a

jobs under power feeds for both the table and

wide range

the grinding wheel head.

*

28

1

With the pump motor running, the table will traverse when
the red-knobbed table start-stop lever (P in figure 6; Q in figure 7) is
pulled outward.
Whether the table moves to the right or left is determined
dog-actuated

F and P in figure 7). Both levers work together.
in the opposite direction to that in which the levers are pointing.

matically, the table Start-Stop lever must be pulled out each time
table traverse is required. With the semiautomatic machine set for
traverse grinding,

traverse - will begin automatically when the Start-Stop
outward.

a range of 2 to 240" per minute.
rates for both truing and grinding. The number of speeds is infinite.

The table speed control dial (G in figure 6; D in figure 7) is marked

"Slow-Fast, " and speed changes can be made by turning the knob toward
the appropriate word. Speed changes can be made while the table is
moving under power.

The table stops instantly when this lever is pushed in.

by

or

the hand-operated reverse levers (I and O in figure 6;

The table will move

When traverse

work rotation and coolant flow - in addition to table

Hydraulic power table traverse speed is adjustable

grinding,

either hand operated or semiauto-

lever is pulled

This provides a range embracing ideal

either the

through

1

PICKER FEED - Hand Operated Machine

The picker feed arrangement can be used for both internal and
external traverse grinding.
(K in figure 6) to " Feed. " The amount of feed is established by adjusting

the knurled knob (J in figure 6) inward to reduce the amount of feed at
each table reversal or outward to increase the feed.

The knurled knob in the center of the wheel feed handwheel

must be brought up snug enough to put a drag on the handwheel. The drag
should be just enough to prevent the handwheel being turned by the up
stroke of the picker feed pawl, but not so much that the handwheel cannot
be turned by the down stroke.

The amount of picker feed for a given setting of the adjustment

can be determined by operating the machine and noting the amount of

handwheel movement at each table reversal.
be established by mounting a dial indicator, or similar measuring device,
on the table and measure the amount of feed at each reversal from the

front of the wheel head.

It is

made operative by turning the selector

A

more accurate setting can

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I

29

PICKER FEED - Semiautomatic

The picker feed on the semiautomatic machine becomes
operative as soon as the "Plunge grind - Traverse Grind" selector
(H in figure 7) is turned to "Traverse Grind. " The amount of feed
at each reversal is adjustable from 0 to . 003".

The total amount of
this automatic infeed is . 075" of wheel movement or . 150" of work
diameter

reduction.

The knife edge metering valve (L in figure 7)is
used to adjust the amount of feed at each reversal. The automatic
infeed can be stopped by closing this valve down completely.

Sizing can be controlled by the positive stop on the hand-
wheel, but the wheel should be retracted manually from either end of
the work when size has been reached.

TABLE DWELL CONTROL

There are two control knobs (F in figure 6 or C in figure 7)
so a separate dwell interval can be set for each end of the traverse
stroke. The control is completely

hydraulic,

depending on the
traverse rate of a control piston in the main table control valve. The
circuit is interlocked so the dwell time begins as soon as the dog
actuated table reverse lever is moved.

Proper use of the dwell requires that it be long enough to
allow three revolutions of the work; one to eliminate the spiral cut
condition,

one to grind away the amount of the pick, and one to round
up the work. The time range on this machine is sufficient for any work
speed.

HEADSTOCK

The headstock can be used for either dead center or live
spindle operation and it can be turned to, and set at, any angle through
the full 360°.

For dead center grinding:

a. turn the point of the spindle Lock-Unlock

knob up

b. insert a 5/16" socket type wrench in the

plunger in the face plate and twist to be
sure the plunger is in the " out" position

30

a

1

For live spindle grinding:

a. turn the point of the spindle Lock-Unlock

knob right or left to horizontal

b. insert the 5/16" socket wrench in the plunger,

press in, rotate the face plate until the
opening in the flange is located, and twist

the plunger so it remains in the "in" position

DO NOT OPERATE THE HEADSTOCK WITH THE SPINDLE LOCKED
(WITH THE POINT UP) AND THE PLUNGER IN. To do so will shear

the plunger.

The headstock can accommodate work up to 1^" in diameter
through the headstock spindle.
center and the adapter by extending a rod through the spindle.
when this setup is used the chuck is turned toward the wheel and the

headstock is set up for live spindle operation.
set either in front of, or behind, the headstock depending on where the

greater support is required.

The scale about the base of the headstock has been carefully
calibrated and is sufficiently accurate for most applications.
particular job require more precise location, the aligning strips on both

sides of the headstock may be used. To bring the headstock spindle into
the most nearly perfect alignment with the table, mount a dial indicator
on the machine base with the pointer on the aligning strip.

table until the indicator shows a zero reading along the entire length of
the aligning pad.

To set up for this work knock out the

The center rest can be

Normally,

Should a

Traverse the

1

1
1

Before moving the headstock on the table, always wipe the

table clean in the area into which the headstock will be moved.

Be sure the table gibs are tight before grinding.

FOOTSTOCK

The footstock is for the right hand use only. The center can
be retracted and extended by using either the handwheel on the end or
the lever on the top. Whether the handwheel or the lever is used depends,

to a large extent, upon the work being ground.
heavy workpieces that require positive setting of the center or for angular
grinds where the pressure of the wheel is against the footstock. The
lever control operates against a compression spring.

The handwheel is used for

It is

entirely

-

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>

a

31

adequate for normal workpieces and grinding pressures. It has been the
advantage of being much faster than the handwheel. The footstock
spindle lock can be tightened to hold the spindle in any position. It is
most often used to hold the center retracted when the lever is being used.

Before moving the footstock wipe the table clean in the area

into which the footstock is to be moved.

Be sure the table gibs are tight before grinding.

INTERNAL GRINDING ATTACHMENT

The internal grinding attachment

is

hinged to the front of the
wheel head so it can be quickly and easily swung down into the grinding
position.

Be sure the area immediately in front of the wheel head is

clear of obstructions

before the spindle is swung down.

The attachment is held in the 11 up" position by a latch which
is released by pulling up the smaller knob on the top of the unit (on the
top when the unit is in the M up" position).

This latch engages by itself

when the attachment is swung all the way up.

Exercise

the grinding position. The contacting surfaces of the attachment and

reasonable

care when swinging the unit down into

the wheel head have been hand scraped to insure absolute alignment of
the internal and external wheel spindles and these surfaces can be

damaged by abusive treatment.

When the spindle has been swung into the grinding position,
adjust the drive belt for correct placement on the pulleys and tighten the
clamping gib to the wheel head.

Before grinding,
been turned to "internal. " Adjust the picker feed if it is being used.

On semiautomatic machines, position the electric and hydraulic

be

sure the electrical selector switch has

cycle

selectors for plain or semiautomatic control.

Ordinarily, the internal grinding wheel is brought up against
the front inner surface of the work for internal grinding.

In grinding

this way, the wheel feed index can be used for positive feed control and

accurate final sizing can be maintained

by

utilizing the positive stop.

There is no affect on the grinding action if the wheel contacts the back

inner face of the work.

It is

often more convenient to watch the point of

32

1

contact when grinding this way, but feed must be judged by the calibra
tions on the handwheel and the positive stop is not available for final
sizing.

the choice.

TAPER SCALE

right end of the swivel is graduated for quick and accurate settings. The

scale has two sets of markings,
indicating inches per foot taper on the diameter. Without a dial indicator
arrangement (supplied only as extra equipment) these graduations cannot
be expected to be exact.

a very close approximation.

setting the table for taper grinding, be sure that the clamping gib at the
right is loosened before attempting to swivel the table; this is done by
loosening two machine screws. Be sure also that there is no interference

between units on the table and the wheel slide.
attempting to grind and recheck for interferences between the table
members

DOUBLE SWIVEL WHEEL HEAD

The requirements of each particular job usually determines

Especially convenient is the manner in which the scale at the

one of which is in degrees and the other

They do, however, afford a means for obtaining

Final adjustment is obtained by trial.

Lock the gib again before

and the wheel slide before traversing the table.

In



i

n

The double swivel arrangement of the wheel slide is extremely

useful.
head swivel and the lower compound swivel.
slide is accomplished by a set of bevel gears with one free to be swiveled

about the other, the wheel may be fed in at any direction by the wheel

feed handwheel. In other words, depending upon the setting given to each
slide, the wheel may be set at any angle to the table and fed at this angle,
or it can be set at any angle and fed perpendicularly to the table ways.

Swiveling the compound swivel permits feeding the wheel at any angle;
swiveling the wheel head permits the wheel to be set at any angle regard
less of feed.

index values mentioned before are the amount the wheel slide moves in
the direction
at 45° and a diameter
index set to advance the wheel . 001", the wheel would actually advance

. 001" at the set angle but only comes into the work diameter . 0007",
reducing the diameter

urged to study the unique construction of the slide and make practical

tests of the unit to discover its possibilities.

The wheel head unit can be swiveled in two places, at the wheel

Since the traversing

It should be remembered that when feeding at any angle the

for which it is set. For example,

and shoulder are being ground, with the wheel feed

.

0014" and the shoulder dimension by . 0007".

Since this versatility is so extremely useful, the operator is

if

the slide is set to feed

of

the

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■

s

\

■

„

■

COMBINATION ANGLES

By

setting the wheel slide at some angle and the headstock
at an angle which added to the previous angle is equal to 90°, it is
possible to obtain additional capacity between the wheel face and the
face of the jaw chuck or face plate.

By setting the headstock at 45°,

counterclockwise (if viewed from above) and swiveling the Wheel Head

Swivel 45° clockwise (90° in relation to the compound swivel) ample

capacity for any face-grinding operation which should be done with
this machine is obtained.
parallel to each other.
accomplished

by

using the wheel feed handwheel; the work being fed

This places the chuck face and wheel spindle

Cross traversing of the wheel is then

into the wheel by the table drive handwheel.

CENTER REST

33

The use of the center rest needs little explanation,
may be pointed out that the shoes on the arms should be adjusted with
considerable care to prevent either a binding action or excess play of

the workpiece. That the work should be centered is fairly obvious and

it is considered good practice that the piece, once loacted in the rest,

but it

be checked with a dial indicator before actual grinding is started.

TABLE DOGS

The two table dogs are positioned along the rack attached
to the front of the traverse table. The knurled pinion on the underside
of the dog normally engages the rack teeth. In this position the dog

can be moved in small increments by rotating the pinion and it tends

to lock the position of the dog.

By

pressing down on the raised,

the pinion is disengaged from the rack so the dog slides freely for

coarse settings.

The knurled locking screws on the top of the dogs

outboard,

ends of the dogs,

positively locks them in position by binding the pinion tightly to the rack.

So long as the dogs and the rack are in good working order

there is no need to use any tools for positioning

the dogs. They move
freely either with the pinion engaged or disengaged and should never be
forced.

SWIVALIGN - (optional)

The NORTON SWIVALIGN Dual Electric Indicator is an
optional feature. It is an electronic device for alignment of a grinding
machine swivel table. It provides an accurate means of measuring

34

!

small angular movements of the swivel table relative to the sliding
table. A linear variable differential transformer
mounted on each end of the sliding table.

units are amplified separately by a two channel amplifier-detector to
give electric meter readings of swivel movements,

has a two movement indicating meter, one for the left hand pick-up

(headstock) and one for the right hand pick-up (footstock). Divisions
on the meter scale indicate directly taper changes in thousands of an
inch per foot of length.
accurate settings with graduations of . 0001 n per foot and the other

of . 0005
adjustment

ment on the fine scale is . 002". The desired range is obtained by
a selector switch on the front of the instrument case. A conversion
chart on the side of the instrument case gives taper per foot values

for lengths other than one foot.

use with 115 volt A.C. 60 cycle power supply.
voltage transformer will give 115 volts A. C. , for line voltage
variations of from 95 to 125 volts.

” per foot of taper change are provided.

on

the coarse scale is . 010n. The full range of adjust

The SWIVALIGN Dual Electric Indicator is intended for

Two ranges of readings,

Signals from the pickup

pick-up unit is

The SWIVALIGN

one for extremely

The full range of

A

"Sola" constant



Getting

the machine and connected to the circuit:

Ready for Operation

After the SWIVALIGN Dual Electric Indicator is placed on

1.

Connect the cables from the pick-up units to

the SWIVALIGN unit by means of the two
Amphenol connectors located on the right
side of the instrument.

2.

Turn the selector switch to the coarse position.

3.

Turn the "on - off" switch located on the front

of the panel to the "on" position so the

amplifier will be ready for use when required.
The pilot light, also located on the front of
the cabinet, will light up when the instrument
is on.

4.

Move the knurled adjusting screws at the gibs

as far away from the pick-up units as possible.

:

■

35

To Eliminate Taper

Move the knurled adjusting screws at the gibs as far away

1.
from the pick-up units as possible.

2.

Grind a test piece and use a micrometer

device to determine
foot and the direction of the taper; clockwise or counter
clockwise (when looking down on the table).

3.

Set the selector switch to the coarse position on the meter

scale if the taper proves to be in the range of . 001 to
. 005" per foot. If the taper is less than . 001
use the fine range.

4.

If the table is to be moved clockwise to correct the taper,

set both needles on the meter dial to the left of zero to
the amount of taper per foot established by the test
grind.
pick-up units at both ends of the swivel table.
movement must be counterclockwise, set the needles to
right of zero.

5. Tighten the table gibs enough to give a slight
drag on the swivel table when the swivel

adjusting screw is turned.

Now the SWIVALIGN unit is ready for operation.

or

other accurate

the amount of taper in inches per

n per foot

Do this by adjusting the knurled screws on the

If

the table



5.

Swivel the table by means of the swivel table adjusting screw

at the right hand end of the table to bring both needles to
the zero position.

If the coarse range has been used repeat the entire procedure

6.

with the selector set on fine. Regrind the test piece, check
the results, set off the needles the amount equal to the
difference between the taper produced and the taper required,
and swivel the table to bring both needles to zero.

Regrind the test piece and check the results.

7.

To Setup For A Specific Taper

1. Move the knurled adjusting screws at the gibs as far away from
the pick-up units as possible.

36

I

2. Set the swivel scale at the right hand end of the table to
the taper desired for a rough setting.

Grind a test piece to establish the taper produced, in

3.

inches per foot, and the direction in which the table
must be moved to produce the required taper.

With the selector switch on "coarse, " set the two needles

4.
on the meter dial to the left or right of zero, depending
on the direction the table must be moved, to the value

that equals the difference between the taper produced
and the taper required,

Swivel the table to bring both needles to zero.

5.

If the coarse range has been used, repeat the entire pro

6.

cedure with the selector set on fine. Regrind the test
piece, check the results, set off the needles the amount
equal to the difference between the taper produced and

the taper required, and swivel the table to bring both
needles to zero.

7. Regrind the test piece and check the results.

in

inches per foot.

R

I

«

1

R



1

■

Servicing

If the SWIVALIGN fails to operate satisfactorily,

following steps can be taken:

Be sure there is power at the receptacle and that the

1.
SWIVALIGN plug and cord are in good condition.

2.

Check the fuse on the front of the instrument

3.

If the above checks do not improve the condition of the unit,

remove the back cover of the case and replace tubes in
the following order:

G. E. 5814 tube

a.

two G. E. 5751 tubes

b.

If all the above tests fail, return the unit to NORTON

COMPANY with an explanation of the trouble encountered.

case.

■

the

1

1
1

i

*

37

FUNCTIONS - Hand Operated Machine

(refer to figure 6 for identification

of

Traverse Grind

Set the Internal-External wheel drive selector to

1.
"

External!

Push the start buttons for wheel and pump drive

2.

1

motors.

Turn the picker feed control (K) to "Feed. "

3.

Set the amount of feed to be obtained at each table

4.
reversal (J) and swing the picker feed arm up
into contact with the handwheel gear.

Place work between centers.

5.

Set the table dogs so the grinding wheel extends

6.

slightly off the workpiece at the both ends of
the traverse.

controls)

Adjust the dwell controls (F) to insure that the wheel

7.

has opportunity

to

grind the amount of the picker

feed.

Check the Grinding-Truing table speed control (H)

8.

to be sure the table will traverse in the grinding
speed range.

Use the Start-Stop lever (S) to start the work rotating

9.

in the opposite direction to the wheel, use the
Work Forward-Reverse control (T) to correct.
Stop the work before changing the direction of
rotation.

Feed the grinding wheel in to very light contact with

10.
the work.

Use the hand valve on the coolant nozzle to turn on the

11.

coolant.

Pull the table Start-Stop lever (P) outward to start the

12.
table traverse.

Adjust the table speed, work speed, picker feed, and

13.
dwell to the specific requirements

of

the work.

38

I

Plunge Grind

Set the Internal-External wheel drive selector to

1.
11 External. "

Push the master start buttons for wheel and pump

2.

drive motors.

Turn the picker feed control (K) to "Off."

3.

Place work between centers.

4.

Position table manually to bring the work directly

5.

in front of the wheel.

Set the wheel feed index.

6.

7.

Start the work rotating.

8.

Turn on the coolant.

9. Use the handwheel to feed the grinding wheel.

i

l

«

1

FUNCTIONS - Semiautomatic
(refer to figure 7 for identification of controls)

Plunge Grind

Push pump start button.

1.
a.

hydraulic and lubrication pump starts

2.

Push the wheel start button.

Turn the cycle selector switch to "Timer. 11

3.

a. the wheel will retract after a predetermined

interval

Switch the coolant control selector to "Automatic. "

4.
a. the coolant pump will start as soon as the

wheel slide advances, will stop when it is
retracted.

5. Set the work rotation selector to "Auto. "
a. the work will begin rotating as the wheel

advances.

■

1

*

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*

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*

39

Set the Plunge-Grind-Traverse Grind selector (H in

6.

figure 7) to "Plunge. "
a. the hydraulic pressure is equalized on both

sides of the table cylinder

Put the Plain-Semiautomatic selector (I in figure 7)

7.

to "Semiautomatic."
a. the wheel will advance through the rapid posi

tioning feed, cushion, and go automatically
into the slower grinding feed when the cycle
control lever is pulled

Push in the table Start-Stop

8.

Put the work between centers.

9.

Pull the cycle control lever,

10.
work rotation begins

a.

coolant starts

b.

wheel advances rapidly

c.

fast feed is cushioned

d.

wheel advances slowly for grinding

e.

wheel feed stops at size

f.

timer times out

g.

wheel retracts

h.

coolant stops

i.

work rotation stops

J.

lever (Q in figure 7).



Traverse Grind

Push pump start button.

1.

Push wheel start button.

2.

Turn cycle selector switch to "Manual. "

3.

Switch the coolant control selector to "Automatic. "

4.

Set the work rotation selector to "Auto. "

5.

Set Plunge Grind-Traverse Grind selector (H in

6.

figure 7) to "Traverse. "

a. table will traverse back and forth

b. wheel will feed a predetermined

each table reversal

amount at

40

7. Pull the Plain-Semiautomatic selector (I in figure 7)
to M Semiautomatic. "

Use the power table speed control dial (D in figure 7)

8.

to set table speed.

9. Set the amount of feed at each table reversal with control
valve "L

Set the table dogs so the grinding wheel extends slightly

10.
off the work at both ends of the traverse.

11. Place the work between centers.

12. Pull the table Start-Stop lever (Q in figure 7)
a. work rotation begins
b. coolant starts
c. table traverses

Set table dwell controls.

13.

Pull the cycle control lever.

14.
a. wheel feeds to grind

b. wheel feeds the predetermined amount

c. feed stops when the part is to size

15.

Push the cycle control lever.

a. the wheel retracts
b. coolant stops
c. work rotation stops

11 in figure 7.

at each reversal

■

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*

1

16. Push in table Start-Stop
a. table stops

FUNCTIONS - Internal Grinding

Swing the internal grinding spindle down into position,

1.
clamp, and adjust the drive belt.

Set the Internal-External wheel drive selector to

2.

M Internal!'

3.

Chuck the workpiece.

lever,

1

1

1

>

Place the center rest (if required).

4.

41

Set the table dogs so the wheel will extend out slightly

5.

on both ends of the work.

Turn the picker feed control to "Feed. 11

6.

Adjust the amount of picker feed at each table reversal.

7.

Set the work rotation Forward-Reverse control so the

8.

work rotates in the opposite direction to the grinding

wheel.

Set the R. H. and L. H. table dwell controls and table

9.

speed control.

Set the work rotation speed.

10.

Attach the flexible coolant nozzle to the valve.

11.

Position the grinding wheel on the front portion of the

12.
l.D. to be ground.

The grinding results will not be
affected by contacting the rear portion of the I. D.
but the picker feed and the index mechanism cannot
be used.

13.

Start the coolant flow.

Push the master Start button.

14.

Pull the table Start-Stop lever.

15.

Adjust the table speed, work speed, and picker feed

16.
to suit the requirements of the job.

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SE-3277-C

SECTION V

GRINDING PRINCIPLES AND GENERAL PROCEDURE

FACTORS GOVERNING FINISH

43

Two major factors may be said to govern the quality of finish
on a ground surface. The first is the manner in which the machine
operates, and the second is the condition of the wheel face. The former
is a matter of mechanical perfection

to none in freedom from vibration and smoothness of operation and

control.

The condition of the wheel face depends on proper wheel selec

tion and is also a matter of technique --a grinding skill which is

and NORTON machines are second

acquired only by experience.

TRUING PRINCIPLES

In preparing the wheel face for grinding,

a

general principle
might be stated. That is, 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 truing of a grinding wheel with a diamond or some other truing

device consists of breaking out of the grinding surface of the wheel
abrasive particles
rough finishing will mean taking out larger particles
in truing for fine finish.
comparatively

to

present a new series of cutting faces, truing for

of

the abrasive than

Hence, in rough truing the wheel feed is

heavy and the traverse fast, while fine finish truing

demands the lightest of wheel feeds and the slowest of table traverse.



TRUING DEVICES

There are many types and styles of truing devices available.

To supplant the diamond, abrasive wheel type dressers

are on the market
and have been found successful for certain grinding jobs. There are also
various styles of diamond truing devices available for use in radial truing
or for form grinding.
the work being ground, the production
and other factors.
attachment of these devices to the table.
however, it is found that the diamond toolholder

The use of any of these devices depends entirely

Quick detachable

required,

fixtures are available for the direct

In the majority of cases,

type of finish desired

attached directly to the

on

footstock is entirely satisfactory.

44

e

■

ROUGH TRUING

The routine practice in rough truing consists of feeding the

wheel into the diamond about 0. 001" and traversing the diamond across

the wheel face at a medium rate. The wheel should be fed in about

0. 001
that the wheel grain and grade is correct, this should produce a wheel
surface satisfactory for rough grinding.

FINISH TRUING

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.
make several passes of the diamond across the wheel without any inward

feed of the wheel.

TRUING SUMMARY

obtained only through experience. Rough truing consists of opening up
the grinding surface of the wheel to expose sharp abrasive surfaces
necessary for the rapid removal of stock. Finish truing, requiring
smoother abrasive face, requires the lightest possible feeds of the wheel

to the diamond and the slowest possible table traverse

the production

M at each pass until a perfectly round wheel is assured. Provided

Truing for finer finishes from this point consists of reducing

In fact, for the finest of finishes it is advisable to

In summation, it may be said that good truing technique is

compatible with

and finish desired.

a

■

■

■

■

i

TRUING PRECAUTIONS

Care should be taken in any truing operation but especially
when a diamond truing device is being used. Avoid continual truing.
wheel which requires

be replaced. Avoid excessive wear of the diamond on wheels which are
too hard. Avoid also the practice of cutting with the diamond before the
coolant is turned on, because, with the diamond heated up, the coolant
might crack the stone or loosen it in its nib. Be sure to have at all

times a sufficient flow of coolant at the point of contact between the

diamond and the wheel. Always bring the diamond onto the wheel in the

approximate center of the grinding wheel face since this avoids the
possibility of the wheel first striking the side of the nib and causing undue
strain.

constant truing is incorrect for the job and should

A

*

*

1

■

■

■

>

■

i

45

i
i

STEADYRESTS

For all traverse grinding and many plunge-cut

as well, the use of steadyrests may be considered essential

work is to be produced.

ground, cuts down on the vibration or chatter and enables the operator

to grind a long slender bar straight.

USE OF THE STEADYREST

The use of the steadyrest requires restraint on the part of

the operator.

against the work while the front bearing rests lightly but without play
against the work.

the work grind small.

STEADYRESTS REQUIRED

to be done. Naturally, a long slender piece of work will have a greater
tendency to spring than a short stubby bar. No set rule can be given for
the number of rests to be used on work in general, since the depth of

the grind and the quality of finish are important

In ordinary use the lower bearing is brought up snugly

The number of rests to be used depends entirely on the work

The steadyrest supports the work being

Too much pressure on the latter bearing will make

factors to be considered.

operations

if

quality

SETTING-UP ROUTINE

WORK LOCATION

The first thing to do is to set the headstock and footstock for

the length of the piece to be ground.

table but it is better practice to have the center of the workpiece

approximately
adjustment.
across the work.

ADJUSTMENT FOR TAPER

(

to be removed and also to find out what taper adjustment is necessary.
After making this adjustment take another light cut. Experience will

soon teach the operator the amount of adjustment to make in order to over
come a known taper.

over the center of the table in order to equalize the table

Next, true the grinding wheel, and then take a light cut

Check the workpiece to determine

These can be set anywhere on the

exactly how much stock is

come



46

1

INDEX SETTING

When the machine is grinding straight within the established

limits of the piece, 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 micro


meter or gage, and, if necessary, make a correction in the index setting
and finally reduce the piece to size.

WHEEL WEAR

If there is much stock to be removed, or if the grinding

wheel is too soft for the job, the operator will probably find that, due

to wheel wear, the piece will be somewhat oversize. Wheel wear, of

course, cannot be avoided but by the selection of the correct wheel,

and by removing only the few thousandths ordinarily taken off in finish
grinding, there should not be enough wear to necessitate a change in
index setting for grinding one or two pieces.

*

■*

SECTION VI

Replacement Parts Drawings

47

Page

Headstock
Footstock
Two-Speed Hand Traverse Apron
Wheel Feed Apron (Hand Operated)
Wheel Feed Apron (Semiautomatic)
Grinding Feed Cylinder (Semiautomatic)
Feed Screw Unit
Hydraulic Wheel Head Traverse (Semiautomatic).
Table Control Valve and Cylinder
Combination
Wheel
Wheel Guard & Coolant Pipes
Steadyrest and Center Rest
Knife Edge Valves
Bevel Gear Mechanism
Wheel Spindle Unit, Ball Bearing Thrust
Cross Index of Catalog Numbers

Direct inquiries

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

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

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

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

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

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

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

&

Selector Valves (Semiautomatic).

Spindle

Unit

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

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

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

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

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

for replacement parts to:

NORTON COMPANY
Grinding Machine Division
Order Department
Worcester 6, Massachusetts

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

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

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

..
.
.
.
.

.
.

48

50
52
54
56
58
60
61

62
64
66
68
70
72
73
74
76

Always include machine size, type, and serial number,

information is stamped on the pad underlining
cast into the machine base.

Order parts by catalog name and number.

i

the word "NORTON"

This

U4 130 —
U4 131
U4 132
U4 133
U4 134
U4 135

-----

----

----

----

----
U4 136 —
U4 137 —

1)4 138 (2)

1)4 139

1)4 140
U4 141

—

—

----
U4 142 —
U4 143(a)
U4 144—
U4 145 —

00

-U4 153
U4 154
U4 155
U4 I56C2)
U4 157
U4 158
U4 159
U4 160
U4 161

—

U4 162

-U4 163
— U4 164
— U4 165
—-U4 166

----U4

167
— U4 168
—

U4 169

----U4

----U4
— U4 170

--U4 173

170

171

U4 174

SE-3075-A
SE-3076-A

U 4 146
U4 147—
U4 148
U4 149—
U4 150
U4 151

—

-----

U4 152(4)

•' 1

U 4 175
U 4

176
U 4 177
U4 178

H L RAND

D H GRAVES

HEADSTOCK

U-4 Number

130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154

Part Name

Motor Base
Motor Base Shaft
Cover

Grease Retainer (outer)

Grease Retainer (large)

Locking Gear
Cam Spring
Headstock Spindle

Ball Bearing
Headstock Body
Spanner Nut

Bushing (short)

Bushing (long)

Feed Selector Knob
Locking Shaft
Locking Cam
Spring Pin Bushing
Spring Pin
Bearing Retainer
Spindle Drive Index
Tee Bolt
Pivot Screw
Ball Bearing
Idler Sheave Stud
Washer

U-4 Number

155

156
157
158

159
160
161
162

163
164
165
166
167
168
169
170
171
172
173
17*
175
176
177
178

Vee Belt
Vee Belts
Upper Sheave Bracket
Washer
Idler Sheave
Motor Sheave
Belt Guard
Ball Bearing Spacer (outer)
Ball Bearing Spacer (inner)
Grease Retainer (small)
Raising Lever Stud

Work Driver
Dog Plate Sheave
Spanner Nut (small)
Seal Retainer

Seal Ring

Index Bolt

Work Dog Plate

Taper Sleeve

Center

Washer

Clamp

Threaded Stud

Headstock Base

Part Name

4*
CD

©

^U4-833

CJ1

o

i

1)4-827-

X

N

U4-829-

1)4-826

X

x

,1)4-825

lol

■v

O

1)4-828

4-824

U4-84Z

U4-834.

U4-836.

U4-835

I

U4-837
U4-838

4-839

U4-844

U4-822

SE-3448-A

SE-J449-A

A . flf /■

U4-8I3

1)4-820/
114-819/

U4-8I8

1)4-817/

U4-8I5

U4-8I6

FOOTSTOCK

RANO

j

■

■

■

A /■

A

/

SE-3448-A
SE-3449-A

FOOTSTOCK

U4 Number

810
811
812

813
814
815
816

817

818

819
820
821
822
823
824
825
826

827
828

Part Name

Footstock Body
Handwheel

#1 Plain Machine Handle

Hex Check Nut

Cap
Footstock Screw

Key
Spindle Cap

Nut
Key
Spring
Washer
Spindle

Sleeve (2)
Bellows
Seal Ring
Water Hood
Center

Truing Rod

U4 Number

829

830
831
832
833

834
835
836
837
838
839
840

841
842
843
844
845
846

847

Part Name

Knob
Spindle Clamp Rod

Spindle Clamp
Adjusting Screw

Washer
Handle Lever

#1 Plain Machine Handle

"O" Ring

Bushing

Torrington
Pinion Gear

RBC Cyclops Needle Bearing

Bumper Block (Tapped)
Washer

Clamp (2)
Clamp Bolt (2)
Washer (2)
Bumper Block

Bumper

Needle Bearing

Note:

Where more than one is

required, the quantity appears in parenthesis.

cn

Oi

to

U4-853

U4-85I

U4-862

U4-86I

U4

U4-856

1)4-881

SE 32 59 - A

SEJ-450-A

U4-887

U4-888

U4-889

TWO SPEED HAND TRAVERSE APRON

RAND

SE-3259-A
SE-3450-A

l)

TWO SPEED HAND TRAVERSE APRON

,1

if

U4 Number

850
851

852
853
854
855
856
857
858
859
860

861
862
863
864
865
866
867
868
869
870

Part Name

Screw (2)
Spring (2)

Pinion Plunger
Bracket
Handwheel

Clutch Face

Clutch Face

Pinion

Pinion Shaft

Stud Bearing

Index Dial

#4 Oa, Machine Handle

Binder Screw

Internal Gear

Apron Cover

Internal Gear

Gear (Driver) With Bushing

Handwheel Stud

Apron

Taper Pin

Gear (Driven)

U4 Number

871
872
873
874
875

876
877
878
879
880
881
882
883
884
885

886
887
888
889
890
891

Part Name

Gear Housing End Cap
Ball Bearing
Intermediate Shaft
Key
Disconnect Clutch
Bearing (2)
Intermediate Gear
Spacer

Ball

Bearing

Washer

Nut

Gear Housing
Rack Pinion With Bushings

Rack Pinion Shaft

Hyd. Cyl. End Cap

"O" Ring
Piston
Spring
Washer
Clutch Disengage Fork

Ring

CP
CO

U4-338

U4-339

U 4-367 U

U4-368^@

1)4-369^^

1)4-433

U4-299

1)4-298

U4-337

U 4-3 3 5,

U 4-33

6,

X

/ U4-287

x

,''04-288.

U4-28I

„ A U4-290 _

U4-280
U4-282 \

U 4-28313?'
U4-284I3)

\

JU4-286,

'

%

<1

*

.AU 4-332

s!#

U4-279,

X*'

U 4-2 74

U 4-2 78

/

\

\

&

^11)4-331

.Ns

3

/

1)4-275,

U4-273.

.. U 4-2 70

„U4-277

\ U4-27I I

/

U4-272

U 4-307

—

U4-308

U4-309

t

U4-3IO

U 4-318

XT

4-319

\U4-32I

MJ4-322

MJ4-323 ^

CJ1

4^

U4-3I2

|^U4-3I3
A—U 4-314

U

4-317

U4-3I5

%

U4-30I

U4-300

SE-309I-A

SE-3092-A

U4-302
U4-306

U4-303^

U4-305.

x*

U4-304

U

4-33 4

U4-333'

U4-330

WHEEL FEED APRON

\U4-324 (2)
HJ4-325

\U4-326

U4-327

U4-328

04-329

WHEEL FEED APRON

(Hand Operated)

U4 Number

270
271
272
273
274
275
277
278
279
280
281
282
283
284
286
287
288
290
298
299
300
301
302

303
304

305

306
307
308
309
310
311

Part Name

Shoe
Fulcrum Pin
Pawl Arm
Wheel Feed Index Shaft

Index Stop

Wheel Feed Index Gear
Bushing (handwheel)
Bushing
Stop Arm
Bearing (short)

Index Crank Pinion

Sleeve
Roller

Spring

Pinion Shaft
Pinion
Pawl

Washer
Knob
Washer
Handle

Wheel Feed Index Handwheel
Screw

Feed Selector Knob
Feed Selector Dial
Pawl Lock

Spring

Dust Boot
Gland
Cylinder Head
Picker Feed Piston

Sleeve

U4 Number

312

313
314
315
316
317
318
319
320
321

322
323
3 24
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
367
368
369

Friction Spring Nut

Spring

Friction Shoe
Picker Feed Control Cock

Picker Feed Valve Body
Valve Piston
Collar
Spring

Piston Stop

Wheel Feed Shaft
Sliding Clutch
Gear Clutch
Ball Bearing
Ball Bearing Spacer (inner)
Ball Bearing Spacer (outer)
Needle Bearing
Gear Washer
Wheel Feed Shaft Gear
Picker Feed Adjusting Screw

Stop Arm Stud

Pawl Stud
Feed Check Nut

Adjusting Screw Nut
Sleeve
Spring

Locking Ring

Detent Ratchet
Detent Ratchet Housing

Knob
Detent Plunger

Spring

Part Name

cn

cji

U4-50I

U4-500

U4-5I0

U4-509

U4-507

U4-506

U4-505

SE-J206-A

SE-3207-A

1)4-518/
U4-5I9'

U4-525

WHEEL FEED APRON

(

semiautomatic

)

114-543/

U4-544-

U4-546

U4-547

/?AMD

WHEEL FEED APRON

(Semiautomatic)

U4 Number

500
501
502
503
504
505

506

507
508

509

510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525

Part Name

Knob
Bushing
Detent Ratchet Housing
Detent Ratchet
Locking Ring
Pinion Spring
Sleeve (short)
Index Pinion
Handwheel
Bushing
Stop Block
Detent Plunger
Spring
Hub Cap
Round End Key
Bushing
Handle
Index Gear (English)
Collar
Clutch Lever
Handle
Clutch Lever Bushing
Wheel Feed Gear
Handwheel Bushing
Handwheel Stud
Locknut

U4 Number

526

527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550

Lock Washer

Wheel Feed Shaft Gear
Ball Bearing Cap
Ball Bearing
Ball Bearing Spacer
Ball Bearing
Lock Washer

Lock Nut

Wheel Feed Shaft

Round End Key
Stop Arm
Stop Arm Stud
Screw
Spring

Pawl Lock

Bell Crank Bracket

Bell Crank Shaft
Detent Plunger
Spring

Bell
Shoe
Spool

Pinion
Wheel Feed Apron Body
Wheel Feed Apron Cover

Part Name

Crank

cn

U4-548

■571

1)4-572

2^U4-567

cn
oo

I

SE-320Q-A

SE-3209-A

U4-575

U4-556

GRINDING FEED CYLINDER

u

!!

I!

GRINDING FEED CYLINDER

(Semiautomatic)

U4 Number

548

555
556
557

558
559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

Part Name

Pinion
Ball

Bearing Cap

Retaining Ring

Ball Bearing
Bushing (outer)
Piston Rack Pinion

Ball Bearing
Bushing (inner)
Clutch Shaft
Round End Key
Clutch Gear - External
Clutch Gear - Internal
Round End Key
Cylinder End Cap

"O" Ring
Cylinder
Cylinder Bracket

Packing Support Cap

Oil Seal

Packing Support Ring

Piston

Tube (right hand)

Tube (left hand)

Body Cap

Piston

Spring

Body Support

Valve Body

Special Pipe Plug

CJi

CO

*

CT>
O

B.B. Retainer 114-64 5

U4-66I Half

Compound. Swivel

Nat

U4-658 Feed Screw

U4-660 Cylinder

JIJ-A F

°R SEMI-AUTOMATIC MACHINES

(2)

Ball Bearings

Miter

Stop Plate 1)4-648/

Miter

Nut and WasKer U4-650

Ball Bearing

Locking

:

Vertical

Gear

Gear

Sleeve

Shaft

U4-646

Nut

U4-647/'

1)4-649.

U4-65I

1)4-652
U4-653
U4-654

U4-6I8 Piston

Head

Rod

Feed

Feed

SE-32I4-A
SE-SSIff-A

t

Screw Guide

Ball

Screw

Bearings

Guide

Piston

(2) U4-656

Key

Rod

1)4-657/
Support U4-6I5

/

FEED SCREW UNIT

II

II

II

&AHO

II

■I

>1

H

:l

vj

Piston

Packing

Cylinder

Valve Support

Rod

Piston Rod

Support U4-6I5

OLl Seal

Gland U4-6I6

Head

Packing U4-639

U4-634

U4-6I8

U4-638

U

4-617

U4-6I9 Piston

©

^

U4-620 Cylinder*

; /

;

U4-630 Valve Sleeve

U4-62I Piston

/

U

4-631 Valve

U4-632 Oil Seal

Sleeve

U4-622 WasKen

U4-623 CusKLon Cap

Piston

U4-624 Cushion Plunder

U4-625 Spring

/

U4-626 Washer

.1)4-627 Washer

-U4-628 Washer

^ .1)4-629 Adjustment

Wfa

St ad

Valve Body

SE-32I2-A

SE-32I3-A

1)4-635

Valve

Cap

U4-633 Piston

Spring

HYDRAULIC WHEEL HEAD TRAVERSE

(SEMI-AUTOMATIC)

05

U4-379 -
U4-380 12)

U4-38I -
U4-382 -
U4-383 -
U4-384 -
U4-385 -
U4-386 -

U4-387 -

U4-388 (2)
U4-389 (2)
U4-390 -
U4-39I -
U4-392 12)
U4-393
U4-394
U4-395

U4-370 —
U4-37I
U4-372
U4-373
U4-374

U4-375 (2)
U4-376 (2) —
U4-377 (2)
U4-378 (2)

U4-404 (2)

—

U4-405 (2)

U4-406 (6)
U4-407 (2)
U4-408 (2)

jr U4-409 (2)

U4-4I0 (2)

------- U4-4I2 (2)

------- U4-4I3 (8)

---- U4-4I4 (2)

----

U4-4I5

---- U4-4I6 (4)

----- U4-4I7 (2) .

-

------ U4-4I8 12)
U4-4I9 (2)
U4-420
U4-42I (2)

U4-422 (2)

(2)

<T>

to

U4-396

U4-397
U4-398
U4-399

1)4-400
U4-40I

U4-402
U4-403

TABLE CYLINDER

U4-425
U4-426
U4-427

VU4-428
\ U4-429

U4-430
U4-43I

U4-432

TABLE CONTROL VALVE

a

V.

TABLE CONTROL VALVE and TABLE CYLINDER

U-4 Number

370

371

372

373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388

389
390
391
392
393
394
395
396
397
398
399
400
401

Part Name U-4 Number

Valve Piston Spool
Pilot Piston Spool
Reverse Valve Sleeve
Reverse Valve Piston
Pilot Valve Piston
Dwell Control Cock

Dwell Cock Strap

Friction Collar

Spring Guide

Pilot Piston Washer
Spring
Pilot Valve Sleeve
Plunger
Bushing
Dwell Control Dial
Control Piston Sleeve
Spring Pin
Piston Stop
Stop Screw
Feed Selector Knob
Reverse Lever Extension
Table Stop Lever
Shoulder Stud (hex hd. )
Speed Control Dial
Bushing
Speed Control Dial
Pin

Speed Control Piston
Spacer

Pin

Control

Reverse Lever Extension

Sleeve Extension

402

403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418

419
420
421
422
423
424
425
426
427
428
429
430
431
432

Part Name

Reverse Lever Hub
Dog Lever
Special Screw

"O" Ring Packing

Wall Step Seal Ring

Piston
Tie Rod Bracket
Tru-Arc Ring

"O" Ring Packing
Cylinder
Piston Rod
Packing
Packing Gland
Wiper Strip
Spanner Nut

Adapter

"O" Ring Packing

Valve Adapter

nOM Ring Packing
Bleeder Terminal
Piston Rod Bracket

End Cap
Dog Lever Slide

Bushing for Gear Segment

Pilot Interlock Lever
Reversing Interlock Lever
Idler Stud
Idler Gear
Dog Lever Shaft
Reverse Lever Shaft
Control Lever Bracket

End Cap (L. H. )

05

00

114-693

03
ifk

1)4-699

U 4-695

U4-696

U4-697

U 4-698, fsA

U 4-709.

U

4-699

1)4-724

SE-32I7-A
SE-3218-A

U4-7I4

COMBINATION AND SELECTOR VALVES

(SEMI -

automatic

;

RAHP

COMBINATION AND SELECTOR VALVES

(Semiautomatic)

U4 Number

690

691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707

Part Name

End Plate
Spring
Straight Pin
Oil Seal
Limit Switch Lever

"O" Ring
Valve
Truarc
Instruction
Lever

Straight Pin
Wheel Feed Piston (small)

Backlash Spool

Picker Feed Piston

Piston

Valve (metering)

"O" Ring

Needle Valve Nut

Ring

Plate

U4 Number

708
709
710
711
712
713

714
715
716
717
718
719
720
721
722

723
724

Part Name

Truarc Ring

Access Plate

Piston (right)
Cap
Truarc Ring
Pin
Valve
"O" Ring

Selector Valve Body
Valve (metering)
Adapter

Top Clip
Valve Body
Manifold
Needle & Check Valve Body
Bottom Clip
Limit Switch Bracket

CD
CJi

U4-775,

y

N

>*.s,U4-774

1)4-768,

U4-773

n

AJ4-772

U4-769

U4-789

U4-766

1)4-76 Z /
/

U4-782

U4-783

0

\U4-794

U4-793

05
05

U4-795

U4-78I

U 4-7 80

SE-3-4-46-A

SE-3447-A

U4-779

U4-8OO_-0'\

^1)4-770

[J4-796

U4-799

U

4-765 *

1)4-784

U4-787-

U4-785

U4-786\

.

U4-750

U4-798

U4-797

-801

^^_U4-802

WHEEL SPINDLE UNIT

U4-760

U4-758

&

4'

©

1)4-759/ ^

^ /

U4-75.

U4-754

U4-757

U4-752

. '^'®1U4-75!

a

V.

■>»

\

N

X

N ^

114-756/

U4-753

SE-3446-A
SE-3447-A

WHEEL SPINDLE UNIT

U4 Number

750

751

752
753
754
755

756
757
758
759
760
761
762
763

764
765
766
767
768
769
770
772
773

774
775
776

Part Name

Wheel Head
Nut
Washer (2)
Spindle Sheave
Spindle Box Nut

"O" Ring

Oil Slinger (RH)

Locking Ring (RIi)
Wedge Bolt (4)

Spindle Box Case
Spindle Box (Small)
Thrust Yoke
Thrust Ring Stud (Upper)

Thrust Ring Stud (Lower)
Spanner Nut (2)
Thrust Plate
Thrust Ring
Thrust Shoulder Ring-
Wheel Spindle
Key (2)

Spindle Box (Large)

Locking Ring (LH)

Oil Slinger (LH)

m

O" Ring

Spindle Box Nut

Wheel Sleeve

U4 Number

777
778

779

780
781
782
783
784
785
786
787
788
789
790
791

792
793
794
795
796

797
798
799
800
801
802

Part Name

Wheel
Wheel Flange
Weight (2)
Weight Retainer
Spindle Nut
Special Nut (4)
Needle Valve (2)

Oil Tub (Upper) (2)

Paper (2)
Oil Sight
Sight Glass Retainer (2)
Bulkhead Union (No. 4)
Spindle Bracket Adapter

Motor Plate
Adjusting Screw

Motor Plate Hinge Pin
Motor Plate
Motor Pulley
Motor Sheave
Internal Spindle Bracket
Eccentric Hinge Pin

Spring
Latch

Knob

Stud
Clamp

o>

o

03

U4-435
U4-436

U4-437
U4-438 ■

U4-439
U4-440

SWIVEL TABLE
ADJUSTMENT

U4-44I

1)4-442
U4-443
U4-444
U4-445
U4-446
U4-447

1)4-448

1)4-449

1)4-450
U4-45I
U4-452
U4-453

^ U4-454

U4-455

_

----- U4-456

—

- U4-457

iS£i

WHEEL GUARD S COOLANT PIPES

A

A

n

A

J

HLRAND
CA. CARLSON

i

V]

!

.

WHEEL GUARD AND COOLANT PIPES

SWIVEL TABLE ADJUSTMENT

U-4 Number

435
436
437
438
439
440
441
442
443
444
445
446
447
448

449
450
451
452
453
454
455
456
457

Part Name

Swivel Nut Cap
Swivel Nut
Swivel Screw
Oil Cup
Clamp Bolt Nut
Swivel Bracket
Hood Hinge Pin
Shoulder Screw
Nozzle
Serrated Washer

Hood
Hood Latch
Wheel Guard Cover
Wheel Guard
Center Hinge Pin

Knob

Coolant Cock Body
Coolant Cock
Horizontal
Shoulder Screw

Supply Pipe

Supply Pipe Clamp
Tee Bolt
Swivel Bracket

05
CO

U4-460
U4-46I

U4-462
U4-463

U4-464

U4-465
U4-466
U4-467
U4-468
U4-469
U4-470
U4-47I
U4-472

U4-49I (3)
U4-492 (3)
U4-493
U4-494 (3)
U4-495 (3)

U4-496 (3)
U4-497

-0

o

U4-473 —
U4-474 —

U4-475 —
U4-476 —

CENTER REST-HINGE

TYPE

HLRANO
CACARLSON

■■

A

A

/]

STEADYREST - HINGE TYPE

CENTER REST

U-4 Number

460
461
462
463
464
465
466

467
468
469
470
471
472
473
474
475
476
477
478

Part Name

Knob
Knurled Set Screw

Adjusting Screw - vertical

Horizontal
Adjusting Screw - horizontal

Straight Pin
Body Cover
Steadyrest Body

Adj. Screw Bushing

Straight Pin

Adj. Screw Bushing

Knob

Knurled Set Screw

Dog Point Set Screw

Washer
Clamp
Clamping

Work Shoe-horizontal (short)
Work Shoe-horizontal (long)

Shoe Holder

Bolt

U

-4 Number

479

480
481
482
483
484
485
486
487

488
489
490
491
492
493
494
495
496
497

Work Shoe - vertical
Work Shoe - vertical
Vertical Shoe Holder
Lower Shoe Pin
Hex Nut

Eccentric Check Nut
Binder
Eyebolt

Center Rest Body
Clamp

Clamp Bolt Washer
Clamping Bolt
Screw
Plug
Center Rest Arm
Straight Pin
Straight Pin
Shoe

Straight Pin

Part Name

^3

P

ASSEMBLED

J SINQLE VALVE

U4-675 Enclosure
U 4-6 76

Spring Retainer Plate
U4-677 Valve Screw
U4-678

Wire

Spring

<J

CO

U4-670 Valve pirx

U4-67I Valve

U4-672 Valve

PI urx £* e r

Body-Sin.

1)4-673 Valve Sleeve

1)4-674 'O' Ring* Pa C Kin

_____

die

_____

£5

__

U4-679

Body-

&

■ti)

&

0

ASSEMBLED DOUBLE

U4-680

U4-68I

1)4-682

U4-683

U4-684 Keeper

Valve

O' Rin^ PacKing

Standard Steel

Wine Spring

plaire

VALVE

Ball

Valve

Doable

SE-992-A
SE-32 I 6 -A

DRWCq BY H RAND

KNIFE EDGE METERING VALVE

il

ii

Compound

Base

U4-730

U4 650 Lock

Nut - Lock Washer

Ball Bearing

Lock Nat-Lock Washer

Ball Bearing Cap

Wheel Feed

Spacer

Ball

Pinion

Bearing U4-735

Sha-ft

Sleeve

Shta-ft 1)4-534/

1)4-733

U4-734

U4-736

U4-652

U4-73I

U4-732

------

M iter

Gear

Locking

Ball

SE-32 19-A

SE-3220-A

Bevel

Lockin<g

Bearing

Nut

Gear

U4-653

Nut

Cap

U4-737

U4-738
U4-739

BEVEL GEAR MECHANISM

U4-654

_U4-740

U4-74I

Lock Nut-

Vertical Shaft

Retainer

Ball

Lock Washen

Bearing

/?

CO

A/VO

1

U 4-78

U4-780

1

1)4-775.

U4-774

U4-769

s

's

C>

U4-900,

U4-789

U4-79L-

U4-903

'*N

<i

a

7A U4-794

U4-792

Q^AU4-795

1)4-793
U4-907

U4-908

SE-^OSS-A.

SE-HOJt-A

U4-800_®

(J 4-799

U4-80I

WHEEL SPINDLE UNIT

(BALL. BEARING THRUST)

Jl

U 4-755

U4-754

,1)4-758

114-757-

U4-756

U 4-752

N

if

h

ti^U4-75l

>*

\

N

N

N

V.

N

U4-753

■J

sj

M

■ j

U4 Number

750
751

752
753
754
755
756
757
758
759
760
769
770

772
773
774
775
776
777

778
779
780
781
782

783
7 84
785

- Supplied on Special Order Only -

Part Name

Wheel Head
Nut

Washer (2)

Spindle Sheave

Spindle Box Nut

"O" Ring

Oil Slinger (RH)

Locking Ring (RH)
Wedge Bolt (4)
Spindle Box Case
Spindle Box (Small)
Key (2)
Spindle Box (Large)
Locking Ring (LI4)
Oil Slinger (LH)

"O" Ring
Spindle Box Nut
Wheel Sleeve
Wheel

Wheel Flange

Weight (2)
Weight Retainer
Spindle Nut
Special Nut (4)
Needle Valve (2)

Oil Tub (Upper) (2)

Paper (2)

WHEEL SPINDLE UNIT

(Ball Bearing Thrust)

U4 Number

786
787

788

789
790
791
792
793
794
795
796
797
798
799
800
801

802
900
901
902
903
904
905
906
907
908

909

Part Name

Oil Sight
Sight Glass Retainer (2)

Bulkhead Union (No. 4)

Spindle Bracket Adapter

Motor Plate

Adjusting Screw

Motor Plate Hinge Pin
Motor Plate

Motor Pulley

Motor Sheave
Internal Spindle Bracket
Eccentric Hinge Pin

Spring

Latch

Knob

Stud

Clamp

Wheel Spindle

Bracket

Bearing Housing

Spacer

Ball Bearing (DF Mounting)

Bearing Nut

Nut Spacer

Threaded Bushing

Locknut (2)
Tru-Arc

Ring

-

j

tn

•n

76

:>

I;

!

H

CROSS INDEX OF

CATALOG NUMBERS

Page

U4 Number

Drawing Title

49

1

130-178
270-369
370-432

435-457
460-497
500-550
548-582
615-639
645-660
670-684
690-724

750-802
534-741
810-847
850-891
750-909

Headstock
Wheel Feed Apron - hand

Table

Wheel Guard & Coolant Pipes

Steadyrest - Center Rest
Wheel Feed Apron - semiautomatic

Grinding Feed Cylinder
Hydraulic Wheel Head Traverse

Feed Screw Unit

Knife Edge Valves

Combination & Selector Valves
Wheel Spindle Unit

Bevel Gear Mechanism
Footstock

Two-Speed Hand Traverse Apron
Wheel Spindle Unit, Ball Bearing Thrust

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

.............•................

Control Valve & Table Cylinder. . .

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

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

..........

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

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

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

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

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

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

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

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

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

55
63
69
71
57

59
61
60
72
65
67

.

73
51

.

53
75

;i

i

• I

V

I