Norton Type C-2 Cylindrical Grinder Grinder, Cylindrical

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SEMIAUTOMATIC OR PLAIN

18" and 24" swing

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CATALOG

NO

1864-1

The NORTON Type C-2

Gives you mor

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Worfc Station Control - May be either

j manual or automatic at the will of the

J operator. A flip of this switch brings

. i about immediate change from

B! the other.

2

one to

Work Jogging — By movement of this

fingertip lever, work may be jogged at
any time whether work rotation is being

automatically or manually governed.

.

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Dwell Control — R'S^* an^u|ate

table dwell separately regU ;ently
easily operated c0"trVthe ope

located in the center o
position.

d by

rating

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NORTON

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TYPE

C - 2 CYLINDRICAL

GRINDERS

SEMIAUTOMATIC OR PLAIN

18"-24" SWING

48" - 72" - 96" - 120" - 144" - 168" - 192" - 216" - 240" BETWEEN CENTERS

Give

You

FAST PRODUCTION - FINE PRECISION - LOW MAINTENANCE

FAST PRODUCTION — You get fast production due to the rapid grinding action of the Type C-2 Grinder, plus

convenient, efficient controls which facilitate production by saving time.

TIME-SAVERS

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© Time is saved in job set-up or changeover

because all controls for feeds and speeds are
on the front of the machine —
the operating position

o Pre-set

feature
lever movement — saving time by eliminating

need for continual resettings

table truing and grinding speed

gives either speed instantly on simple

convenient to

o Work jogging control by conveniently posi

tioned lever permits fractional rotation of
work

to

most convenient position for unload

ing or for inspection for roundness

o Continual indication of in-feed provided

by graduated handwheel rotating past fixe
pointer simplifies feed adjustments





o "Click-count" indexing mechanism on

wheel feed handwheel permits settings for
work diameter reduction in increments as fine

as .0001" — instantly without visual attention

o Table

o Automatic in-feed at table reversals/

reset
close attention during traverse grinding

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start-stop lever saves time in trav

erse grinding by controlling work rotation
and coolant flow in addition to table move
ment

adjustable from zero to .003" with automatic

after reaching size eliminates need for

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o Dwell control for each end of table

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N6750

travel is

knobs in center of operating position

o Work rotation and coolant flow control

instantly set to operate automatically with the
cycle — or to be operated manually — by a
mere flip of a selector switch

o Table

disengaged when table is driven by power —

and is automatically engaged when power is
shut off

"All controls for feeds
and speeds grouped at
the operating position"

separately set instantly by individual

traverse handwheel is automatically

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FINE PRECISION

FINE PRECISION —

plus

generous way areas which assure low unit pressure in operation of sliding components. An extremely

You get fine

precision because of the heavy base and

wheelslide of the Type C-2 Grinder,

precise wheel feed mechanism and enduring accuracy in the wheel spindle unit contribute importantly to
giving you finest precision.

o Micrometric-type wheel feed mechanism

greatly sustains sizing accuracy — large dia
meter feed screw revolves in long full-nut,
affording precise metal-to-metal contact

o Large way areas are hand scraped for sus

tained



accuracy of sliding components — ways

provide precise bearing and have superior

lubricant retention properties due to creation
of minute oil pockets in scraping

o Combining of most efficient hydraulic and

mechanical features in wheel feed mechanism
assures fast, accurate sizing

o

Heavy-duty capacity of wheel spindle unit
permits fast roughing cuts or finest finishing
without readjustment of bearings

o Sliding and swivel tables are proportioned to

assure straight work — heavy tables dampen
vibration and provide rigidity for heavy cuts

o "Across-the-table”

stock and footstock promotes enduring accur
acy in

work support by maintaining alignment

clamping of heavy head-

of these units

LOW MAINTENANCE

LOW MAINTENANCE —

and other equipment requiring occasional checking, are positioned for time-saving accessibility.

You have

low maintenance costs with the Type

C-2 Grinder because pumps, motors

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o All pumps and motors are mounted on the

outside of the machine in areas that afford
maximum accessibility

o Filters for hydraulic system and for ways

lubricating system are mounted

i

mit easy checking

outside to per

o Hinged wheel guard cover eliminates

cover lifting — appreciably quickens wheel
change

o Ramped coolant tank outlet speeds tank



clean-out

o Large sight-glasses on oil reservoirs give

continual indication of oil level

o Pressure relief valves are placed in easily

reached outside positions

o Ways lubricant flow control valves are

mounted outside of rear base for instant access

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;

PLAIN MACHINE — principally for traverse grinding. Has automatic wheel feed at work table

o Electrical

enclosure

o Steel tape-type base

controls are grouped in an elevated

for protection and ease in inspection

way guards provide

fine protection and require no floor space

reversals, and provides all of the other advantages mentioned above.

SEMIAUTOMATIC MACHINE - provides all of the advantages of the Plain Machine, and has

the added feature of an automatic grinding cycle for plunge cuts. The automatic grinding

cycle operates under simple ''one-lever”

I

control.

C-2

SEMI-AUTOMATIC AND PIAIN MACHINES AU . . .

ENGINEERED TO GIVE YOU

PRECISION AND ENDURING ACCURACY

W H EEL FEED MECHANISM

The wheel feed mechanism gives you rapid precision — most efficient hydraulic and
mechanical features combine to produce fast, accurate sizing

Automatic feed accomplished by “
accuracy from the metal-to-metal contact afforded by this method

Automatic feed quickly adjustable over a wide range — with automatic reset of the
wheel

Settings for automatic feed are quickly made through movement of the hand wheel —
your operator does this from his normal position

Graduations on wheel feed hand wheel give
of infeed as

“

Click-count” indexing mechanism on wheel feed hand wheel permits settings to incre

ments as fine as

wheel rotates past a fixed pointer

.00005" (.0001" on work diameter), instantly without visual attention

revolving the feed screw” —

your operator ready indication of

you get micrometer-fine

amount



closest accuracy —

or heaviest

because

roughing cu*s

of these features

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Feed wheel at your operator’s hand — no reaching

Large diameter feed screw which is lapped and mated with a long full-nut attached to
the underside of the wheel slide, promotes enduring accuracy

o Over 50% of spindle body enclosed in two super-

duty size, hard bronze bearings to provide
extreme service capacity

o Spindle is ruggedly proportioned and is spe-

dally toughened to provide superior wearing
qualities

o Spindle is rigidly supported over practically its

entire circumference for maximum resistance to

.

wheel pressures

o Bearing length over twice the diameter for assur-

ance of long bearing life

o Extremely low unit pressure

tinuous bearing surfaces permits fast cutting with

enduring accuracy

due to

long and con

o Bearings automatically flooded by filtered lubri-

cant from self-contained lubricating unit within
wheel spindle housing

o Automatic lubricant flow continually visible

through bull’s eyes — an extremely important
feature in safety and control

o Heavy-duty flood lubricated end thrust bearing

at center of spindle assures fine lateral stability

o Wheel speed changes possible without readjust-

ment of
Minute oil clearances and modern precision bor-

©

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ing assure an enduring peak performance

o An unmatched sendee record

bearings

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TKe Type C-2 Semiimtonmtic

ENGINEERED

to

give you

Movement of one lever produces these automatic functions

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stop

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RAPID

^a>#ADVANCE

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Wheel advances rapidly
Work rotation starts
Coolant flow starts

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The AUTOMATIC GRINDING CYCLE makes possible a sustained high

production by functioning with consistent rapidity hour after hour, and by

eliminating need for operator attention. The cycle includes a rapid advance
of the grinding wheel, a momentary cushioning, the actual grinding feed,
dwell

for size and finish, and rapid wheel withdrawal —

on the part of the operator.

AUTOMATIC RAPID ADVANCE AND WITHDRAWAL of the grind

ing wheel occurs smoothly by the action of a large piston moving in a
hydraulic cylinder. In this rapid movement, the piston moves the feed
the full-nut, and the wheel slide, as an integral unit with no relative motion

all

jobs

without effort

screw,

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between these elements —

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stop

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stop

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ADVANCE

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FEED

TO STOP

DWELL

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Wheel advance retarded
Wheel continues to advance at grinding speed

Grinding continues to predetermined stop

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Dwell period for size and finish

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AUTOMATIC GRINDING FEED starts

ing of the rapid advance. Automatic feed is accomplished by hydraulic rota
tion of the large diameter feed screw in its long full-nut (virtually a large
micrometer). The feed obtained through this arrangement is extremely pre

cise. It is quickly adjustable as to rate and to amount — from the front of

the machine.

In addition to the standard arrangement as outlined above, a Wheel Feed
Accelerator for speeding production under conditions of wide stock removal
variance,

at extra

on Page 13, is also available at extra cost.

and a

cost.

Shoulder

An

Electric Power Wheel Positioning Arrangement as described

and

Feed

no

wear.

on completion of

for

feeding down long shoulders, are available

the

brief cushion

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6

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Wheel retracts rapidly

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STOP EHJ

8

n

rapid

RETRACT

Work rotation stops

Coolant

shuts off

m

Type C-

2 Semiautomatic and Plain Machines Are . . *

ENGINEERED to give you Stability and Durability

SMOOTH, POWERFUL HEADSTOCK

o The rugged headstock, "straddle-clamped”

the slanted swivel table, provides strong work sup

port for heavy cuts, and is engineered for extended

service

o Amply powered all vee-belt drive assures exceed

ingly

smooth action and fine finishes

o Headstock operation requires minimum effort —

rotation start — stop is automatic with cycle

© Auxiliary manual control by push-button operation

is also provided for setting up

e Headstock is quickly positioned along table by rack

and pinion arrangement

© Work jogging control by lever positioned conveni

ently to operator’s left-hand, speeds work loading
and removal

across





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N6522

STRONG FOOTSTOCK

© Screw-type spindle control operated through con

veniently positioned
easiest operation

c Unit is heavily proportioned and strongly clamped

across the table to support work sturdily under
heaviest cuts

& Footstock center is supported in hardened, heavy

spindle

@ A rack and pinion arrangement easily moves unit

along table

® A bellows-type guard protects spindle from infiltra

tion of coolant and grit

right-angle

hand-wheel assures

STURDY TABLES

m Sturdy sliding table

sure-lubricated flat and vee

© Large area of ways assures low unit pressure — and

long life

« Slanted swivel table pivots at center of sliding table

moves on widely spaced pres

ways

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N6522

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© Slanted

ant and an ideal clamping surface for table equip-
ment in addition to a stronger cross-section of
table

swivel table provides best drainage for cool



ENGINEERED t® give you Maintenance Ease

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Elevated electrical enclosure
protects electrical controls —
and saves time by permitting
easy, stand-up inspection

N76I2

Hinged wheel guard
swings back — no lifting
for wheel change

Low-wall coolant tank
with ramped sides provides
extreme ease in clean-out

Filters and relief valves
positioned for convenient
checking

Close-approach to wheel y
guard eases and speeds V.
wheel change

Headstock center removal
is facilitated by hole in
belt guard for knock-out rod

------

y

N6727

N6843

Ways lubricant flow control
valves are highly accessible
for regulation

Ways lubricant reservoir
is positioned for ease in
filling and cleaning. Note
visibility afforded by

large sight gage

Note accessibility of wheel
change offered

base design and

rear
hinged cover wheel guard

by low

Note convenience of

electrical controls inspection

offered by grouping of con

trols in elevated enclosure^

Pumps, and motors mounted
outside

for accessibility

Spindle

lubricant

is

outside type,
maximum ease in filling
and cleaning



reservoir

offering

N6844

EQUIPMENT INCLUDED IN PLAIN MACHINE PRICE

GENERAL

Adjustable automatic table dwell control at each table reversal

G Headstock, dead center type, including No. 20 Jarno center

(21/2" dia.) without electrics

G Footstock, lever type, including No. 20 Jarno center (21/2

© Wheel guard, 30"

G Wheel sleeve, balancing type, for 12" hole 23/g" — 3%" straight

sided wheels

© Diamond toolholder, footstock type

O Set (3) work drive dogs (2V2" — 4" — 6" capacity)

© Two grinding wheels 30" x 3" x 12", straight sided

© Hydraulic table traverse

© Hand table traverse with interlock

© Swivel table

x 3" for straight sided wheels

,r dia.)

O

Automatic force feed lubrication to table and wheel slide ways

o

Automatic adjustable in-feed at each table reversal, also auto

O

matically resets wheel and index to original position

Pre-set truing and grinding table speed control

O

Automatic

O

Steel tape-type base way guards

O

Hand grinding wheel feed with "Click-count

O

ism, complete coolant system with automatic control

Coolant and oil pumps

O

Automatic work start and stop

O

Wheel spindle safety device

O

Wrenches, motor pulleys, and all protection guards

O

wheel

spindle lubrication

ELECTRICAL

G 20 H.P. 1800 R.P.M. A.C. Wheel Drive Motor, totally enclosed, ball bearing*
G 2 H.P. 500/2000 R.P.M. D.C. Work Drive Motor*

G 3 H.P. 1200 R.P.M. A.C. Pump Drive Motor, totally enclosed, ball bearing (for machines up to 96" length). — 5 H.P.

1200 R.P.M. A.C. Pump Drive Motor, totally enclosed, ball

O Yi H.P. 1800 R.P.M. A.C. Coolant Pump Motor, totally enclosed, ball bearing

(* Different motors are available at extra cost)

bearing for machines 120" and longer

” indexing

mechan

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



WIRING and CONTROLS

©

Motors included in price are 50 or 60 cycle with controls for any voltage up to 600 volts
Elevated electrical controls enclosure supplied as standard

o

Wiring is in accordance with Machine Tool Electrical Standards

o

Circuit breaker is interlocked with door of elevated electrical controls enclosure

©

110 Volt control circuit is supplied as standard

©

All starters are of the magnetic across-the-line type

EQUIPMENT INCLUDED

IN

SEMIAUTOMATIC MACHINE PRICE

The Semiautofr .ic Machine price includes all of

and

___includes: Automatic grinding cycle with electric timer control

the equipment listed .above for the Plain Machine

'

1

AUXILIARY EQUIPMENT AVAILABLE

Electric Power Wheel Positioning Arrangement

0 Arrangement

0 Power operation eliminates manual effort in moving wheel appreciable distances

O Arrangement permits wheel to be stopped at any point in its entire range of travel

C Wheel is positioned by push button control

O Wheel is positioned quickly — electric motor rotates feed screw through mechanical coupling

O Arrangement is quickly engaged or disengaged by movement of a small lever

O Arrangement is furnished at extra cost on both Semiautomatic and Plain Machines

speeds wheel positioning for grinding several diameters on one workpiece

Wheel Guard Type Truing Device

0 Increases wheel truing efficiency through automatic operation

O Increases production by reducing time and requirement of

O Avoids disturbance of table settings — no table or special positioning of wheel head required

Functions under push button control

skill

0 Device gives close and uniform control of amount of abrasive removed from wheel face, thus reducing w'heel cost

per piece ground
O Automatic down feed is adjustable for coarse or fine truing — minimum increment of feed is .0005"

O Truing of irregular forms involving curves and shoulders can be accomplished by special arrangement of this device

ADDITIONAL AUXILIARY EQUIPMENT

O Wheel Sleeves

© Wheel Guards

© Wheel Balancing Equipment

© Steadyrests

© Multi-Stop Index Ring

© Table Locating Equipment

O Wheel Spindle Reciprocating Attachment
0 Wheel Truing Devices

© Center Pointing Device

© Shoulder Grinding Attachment

G Work Supports

SPECIFICATIONS

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CAPACITY

Nominal swing
Maximum diameter possible

to grind with 30"

Maximum recommended weight on centers

!

Nominal lengths between centers

48", 72", 96", 120", 144",, 162", 192", 216" and 240"

Grinding wheels :

Standard diameter and width
Maximum
Maximum

Maximum width of 42" wheel*
(♦Including spacing collars)

Distance between Wheel and Work centers:

Maximum ........................................................

Minimum ..........................................................

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

wheel

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

width of 30" wheel*
width of 36" wheel*

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

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

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

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

18"

18"

30 x 3 X 12"

28"

10" 10"

24"

24"

10,000 lbs.

8"
6"
5"

28"

HEADSTOCK

Spindle
Center diameter

Work speed range (standard) :

Note: These are minimum ranges provided with motor speeds shown.
Faster ranges can be supplied with the same motors by providing a larger
motor sheave.

diameter

10/115 r.p.m. with 450/1800 r.p.m. motor
11/128 r.p.m. with 500/2000 r.p.m. motor
13/147 r.p.m. with 575/2300 r.p.m. motor

12/34/47/135 r.p.m. with 1200 r.p.m. constant speed A.C.

motor

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

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

■ • 51/s"
. . 21/2"

Steadyrests — Max. diam. of work accommodated

Standard type

Heavy Pattern
Coolant Tank, Capacity
Hydraulic Oil Reservoir, Capacity
Lubricating Oil Reservoir, capacity
Spindle Oil

Swivel Adjustment for Taper Work:

Tapers given in inches per foot on diameter

Machine
Taper . . 33/8" 23/4" 23/8"

Note: These figures do not represent the greatest taper per foot that can

be ground. Tapers depend on the wheel diameter, work diameter and

length, and the location of the taper with reference to the pivot point.

Drawings of tapered work to be ground should be submitted in all cases.

Spindle length

Large bearing . . . .

Small bearing . . . .

Number of speeds .
Diameter of pulleys
Drive from motor .

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

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

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

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

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

Reservoir,

48" 72" 96" 120" 144" 168" 192" 216" 240"

capacity

WHEEL

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

2" 1%" lnAa" 1V2" l3/8" 1V4"

SPINDLE

WHEEL

SLIDE

9l/4"> 11" and 135/8"

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

10"
10"

........... 44%

5V2" x 10%"

5>/4" x 8i/2"

9

12"
12"

165 gals.

55 gals.

3V2 gals.

3j/2 gals.

Vee belts

(.

o"

3

Overall

FOOTSTOCK

Spindle diameter

Center diameter

Feedscrew diameter
Feedscrew pitch — thds. per inch

Index graduated for

English

Metric ........................................................................

Automatic infeed at each table

reversal in work diameter reduction, 0 to .003"

WHEEL

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

wo/k diameter reduction

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

FEED

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

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2%"

3%2"

21/2"

.0001"
.0025 m/m

width of ways
Width of flat way
Width of vee way

Center to center distance of ways

All

’ lengths

Width of flat table way .
Width of
Center to center of ways
Overall width of ways . ,
Lubrication of ways

vee table way .

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

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

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

TABLE

SPEEDS

BASE

253/4"

6"

71/2"

19"

3" to 120" per min.

183/4-

Pressure

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FLOOR SPACE

Nominal Lengths

Total Projected Lengths

Widths, all lengths:

Net Weight,

including

motors (approx.)

48"

204"

18"

24"

72"

252"

48"

29,146

29,746

96"

300"

72"

31,246

31,846

120"

348"

96"

33,346

33,946

120"

35,446

36,046

144"

396"

144"

37,546

38,146

168"

444"

168"

39,646

40,246

192"

492"

192"

41,746

42,346

216"

540"

216"

43,846

44,446

240"

588"

240"

45,946

46,546

Machine meets J.I.C. Hydraulic Standards, with hydraulic fluid reservoir inside base.
Because of variations in equipment and castings, exact

cubics are in cubic feet. Motor weights are included.

The descriptions, illustrations and specifications in this booklet are correct at the time of printing. Since the policy of Norton

Company is constantly to improve its machines, those built at later dates may differ from these details to some extent.

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27" 714
31"7!4
33" 714
39" 714
43" 714

47"714

£

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20"5’,

24"5\
28"5‘,
32'5>,

36"3\
40"3’,
44"5>,
48"S»,

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c BOTTOM OF BASE

weights and cubics cannot be given. The above weights are in pounds;

EXTREME REAR POSITION
OF WHEEL SLIDE GUARD

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PRODUCTS

ABRASIVES • GRINDING WHEELS • REFRACTORIES
FLOOR AND STAIR TILE • AGGREGATES • NORBIDE

PRODUCTS • ENCAPSULATING MACHINES

MACHINES FOR

CYLINDRICAL GRINDING o SURFACE GRINDING
CYLINDRICAL AND FLAT LAPPING o UNIVERSAL TOOL
AND CUTTER GRINDING a UNIVERSAL GRINDING
SPECIALIZED GRINDING o CAM AND SHAPE GRINDING
CRANKPIN AND CRANKSHAFT BEARING GRINDING

VALVE GRINDING • ROLL GRINDING • SPECIAL

AIRCRAFT PRODUCTION GRINDING • ATTACHMENTS

AND EQUIPMENT FOR SPECIAL WORK

loSST

■:

$

m

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1

No. 20 Cutler and Tool Grinder

8" x 24" Surface Grinder

-

No. 2 CAM-O-MATIC* Automatic Cam Grinder

DISTRIBUTORS IN ALL PRINCIPAL ‘

Form 1864-1PBME-4-53

MACHINE DIVISION OFFICES

Hartford 7

New York Area . . Green and North Sts., Teterboro, N. J.
Cleveland 3
Detroit 8 .

Chicago 32

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♦TRADE-MARK REG. U.S. PAT. OFF.

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EXPORT: NORTON BEHR-MANNING OVERSEAS INC.

CABLE ADDRESS: NORBEMO, WORCESTER

998 Farmington Avenue

. . 1306 East 55th Street

. . . 5805 Lincoln Avenue

4737 South Christiana Avenue

TIES THROUGHOUT THE WORLD

D

wmm

mS&m

No. 26 HYPROLAP* Lapping

Machine

m.

Printed in

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5$

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