Norton Special Universal Jet Part Grinding Machine Grinder

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42" x 72"

SPECIAL

UNIVERSAL

JET

CATALOG NO. 1 444-1

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PART

GRINDING

MACHINE

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Waking better products to make other products better

NORTON

o The general requirements for grinding parts
for

turbo-jet type engines are met with excep

tional

efficiency by this heavy duty grinder with

universal features.

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42" x 72"

SPECIAL

UNIVERSAL

Urn

JET PART

GRINDING

MACHINE

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These
curacy
to the precise functioning of the heavy duty
production-type wheel head and feeding mech
anism, and the unusually rigid construction for

a

machine of the universal type.

ment,

development of special grinding machines for
builders of turbo-jet engines since their intro
duction.

roughing cuts rapidly to the full capacity of the
20 H.P. wheel drive motor. The machine is also
capable of finishing work held on dead centers

to tolerances within .0001". Its compound type

wheelslide can be swiveled 180° by power. This

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permits mounting an auxiliary wheel spindle on
the wheelslide for grinding surfaces impossible

to reach with a full size wheel.

parts are ground to close limits of ac

and to fine surface finishes due largely

The general design, capacities, and equip

are the result of a foremost experience in

The Norton

Universal

Jet Part Machine makes

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An additional benefit offered by the machine

is that its compound type wheelslide provides

for

grinding from the work center to the full
swing capacity of the
size grinding wheel (30")—or with wdieels
worn to the discarding diameter. Another ad

vantage is that the machine is easily operated
when it sets on the floor line—no pit is required.

machine (42") with a full

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FEATURES

BASE

Heavily webbed single casting
Designed to assure rigidity and enduring

accuracy
Large pressure lubricated ways—one flat

and one vee—support the table

Alignment of base ways always maintained

Weight uniformly distributed

Work tables never overhang base

Base ways protected by telescoping covers

TABLES

Sliding table moves on vee and flat ways

of base
Swivel table pivots at center of sliding

table
Large bearing area on flat and vee ways

Swivelling of table easily accomplished
Swivel table built to allow easy loading
Sliding and swivel tables of ample

proportions to insure rigidity

WHEEL SLADE

Wheel Slide is compound, heavy duty pro
duction unit

Compound slide

feature

provides for grind
ing from work center to full swing capacity
—

42" with full size wheel (30")—or with

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wheels worn to discarding diameter

Swiveling arrangement permits 180° swivel
by power to position wheel for angular
wheel slide operations or to bring auxiliary
spindle into grinding position

Auxiliary spindle permits grinding sur
faces which cannot be ground with stand
ai d wheel

Auxiliary manual handwheel affords means
of accurate swivel setting which is grad

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uated in degrees

Automatic clamping of swivel slide through
interlock on swivel motor switch

Power swiveling controlled from front of
machine by push buttons

TABLE TRAVERSE

Power table traverse is mechanical type
powered from motor driven backshaft with
speed changing mechanism

Gears run in oil bath for smooth and quiet

operation
Changes in speed easily made without

stopping the table

A two-speed mechanism provides for slow
and rapid hand movement of table

Table reverses automatically at each end

of travel when operated by power and au

tomatic dwell at reversal points is provided

WHEEL

FEED

Feed screw is a large micrometer screw
Lapped and mated with long half-nut at

tached to underside of wheel slide
Index arranged to provide positive settings

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of .0001" on diameter of work
Positive

size stops easily set

Simple adjustment of end thrust provided

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Antifriction bearings used throughout
Feed screw runs in oil bath
Adjustable automatic wheel feed at each

#

table reversal is standard equipment

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N-5186

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WHEEL

HEAD

RAPID

TRAVERSE

© Power positioning of wheel head saves time and effort
° Power positioning by a mechanism that revolves the feed

screw

in either direction

° Wheelslide can be stopped anywhere within its range of travel

when being positioned by power

° Safety-dogs prevent overrun

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NORTON

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SET PART

GRINDER

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H Heavy duty production grinder wheel-

slide assures enduring precision

2 Auxiliary anti-friction bearing spindle

unit for small wheels as extra, if desired

3 Auxiliary manual handwheel for vernier

setting of the swivel, which is graduated
in degrees

4- Electrical controls housed in special en

closure for protection against dirt and
moisture

5 Compound-type wheelslide swivels 180°

by power—for grinding tapers—for angu

)

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lar slide grinding or to bring auxiliary
spindle into position

6 Wheelslide swivel motor accessibly

mounted

7 Table drive motor and coolant

protected by easily removed guards

8 Force-feed lubrication to table and

wheelslide ways

9 Baseways protected by telescoping

covers

10 Coolant filter available as extra, if de

sired

pump

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1 Work is smoothly powered by all vee-

belt drive, heavy duty headstock

2 Exceptionally rugged workhead spindle

absorbs thrust and amply supports all
components of jet engines within the
machine capacity

3 Machine grinds full diameter work with

30" diameter wheel

4 Finest finishing or heavy roughing cuts

performed enduringly with the proved

Norton Wheel Spindle Unit

5 Fine control of footstock spindle move

ment by screw and handwheel

6 Slanted swivel table provides best drain

age for coolant and ideal clamping sur
face for table equipment in addition to
stronger cross-section of table

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8 Wheelslide swivel motor controls at right

hand of operator

9 Micrometer-type wheel feed mechanism

with index providing settings for .0001"
work diameter reduction offers easy
manual feeding means

1

0 Wheel head quickly positioned by power

—

forward or back-by this simple lever

1 H Power feed for plunge cuts by a mech

anism operating a picker-type ratchet on
wheel feed index gear

U 2 Table reverse and table start-stop lever

are in center of normal operating posi

tion

? 3 Fast or slow table speed in manual oper

ation from this two-speed mechanism

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7 Twelve table speeds within range of 6"

to 30" per minute by these controls

6

14

Hand-high motor controls reached from

operating position

7

N-6083

NORTON

WHEEL SPINDLE

• Over 50% of spindle body supported in
two super-duty size, hard bronze bear

ings

• The Norton spindle stays on its fixed
center-line—no shifting is possible

• Spindle is rigidly supported over prac
tically its entire circumference

• Bearing length over twice the diameter
a very desirable feature

• Bearings automatically flooded by fil
tered lubricant

• Heavy-duty end thrust bearing at center
of spindle is pressure lubricated

—

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UNIT

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° Self-contained lubricating unit within

wheel spindle housing delivers film of
filtered lubricant between spindle and
bearings

• Automatic lubricant flow clearly visible
through bull’s-eyes—an important safety

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feature

° Extremely low unit pressure due to long

and continuous bearing surfaces

© Wheel speed changes possible without

readjustment of bearings

• Ruggedly proportioned spindle is tough

ened to resist wear

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• An unmatched service record

AUXILIARY SPINDLE ARRANGEMENT

0 Auxiliary anti-friction bearing spindle unit, mounted on rear of

wheelsiide, available as extra

o Auxiliary spindle, positioned by power swiveling of wheelsiide

N-5188

9

HEADSTOCK

• Heavy duty dead center type with all vee-belt drive

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• Transmits smooth, even flow of power to work which assists achievement of fine
surface finishes

• Work Spindle is exceptionally rugged to absorb any thrust

• Work Center 2" in diameter—No. 16 Norton taper

• Easy positioning of headstock along table by rack and pinion arrangement

• Electronic drive permits wide range of work speeds from A.C. power supply

FOOTSTOCK

• Rigidly proportioned with generous bearing on table

• Has rack and pinion arrangement for easy positioning along table

• Spindle is operated by screw and handwheel

• Work Center same as that for headstock

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MACHINE

EQUIPMENT

SWCLUDEO IN PRICE

I

• •

• Headstock, dead center type—2" dia.
center

• Footstock, screw type—2" dia. center

• Wheel Guard, 30" x 3" (
type)

• Wheel Sleeve, 3"-4" capacity, 12"
hole

• Two Grinding

# Power operated swiveling Wheelslide

0 Telescoping Baseway Covers

O Diamond Tool Holder—Footstock

type

0 Driving Dogs—2^"-4,/-6" capacity

Wheels-30" x 3" x 12"

AUXILIARY

hinged

cover

O Wheel Drive Motor—20 h.p.

1200

R.P.M.

© Table Drive Motor—3 h.p.

1200 R.P.M. A.C.- (

© Work Drive Motor—2 h.p.

Adjustable Speed D.C.

© Wheelslide Swiveling Motor—1 h.p.

1200 R.P.M. A.C.- (
Q Magnetic Starters for all A.C. Motors
© Electronic Control Unit for D.C.

Work Drive

G Circuit Breaker interlocked with

Control Cabinet Door

0 110 Volt Control Circuit

© Controls mounted in NEMA Type 1

Steel Cabinet

EQUIPMENT

A.C.- (

EXTRA

T.E. Ball Bearing

T.E. Ball Bearing

T.E. Ball

Bearing

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# Auxiliary Spindle Bracket with Inte

gral Motor Style P-3500 Spindle

(3 H.P.—3600 R.P.M. motor)

0 Steadyrest—two bearing type

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• Mirror Attachment

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O Auxiliary Wheel Truing Device

© Wheel Spindle Reciprocating Attach

ment

® Shoulder Grinding Attachment with

Dial Indicator Arrangement

MACHINE

SPECIFICATIONS

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Angle and Face Truing Device

Closed Type Steadyrests
Jib Crane and Wheel Adaptor
Coolant Filter

CAPACITIES

Nominal swing
Maximum diameter possible to grind with 30" wheel
Nominal length between centers

Maximum approved weight on centers

Standard grinding wheel

Maximum distance between wheel and work centers
Minimum distance between wheel and work centers
Swivel table taper adjustment
Steadyrest capacity (work diameter)
Wheel head traverse

Total distance by feed screw .
Additional movement by auxiliary screw
Total movement

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42"
42"
72"

6,500 lbs.

30 x 3 x 12"

2k" per ft. on dia.

36k'"

7"

7"

21k"

8"

29k"

SPEEDS

Table speeds

Number of
Range, inches per minute

Work speeds

Number of
Range, revolutions per minute

—

12

6 to 90

—

Infinite

10 to 150

MOTORS

Standard 220/440 volt, 3 phase, 60 cycle A.C., TE, BB constant speed indued
motors unless otherwise noted. Speeds given are

FLOOR

Total projected length with telescoping baseway guards
Projected width at widest point

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synchronous no-load speeds

SPACE

23' 9"

9' 11"

SB-aBPPOMG SPECIF! G A T i O N S

Approximate net weight

Approximate shipping weight

Because of variations in equipment and casdngs, exact weights cannot be given.
The above weights are in pounds. 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.

27,800
30,300

on

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WKS8SBS

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NORTON

6 x 18 Semiautomatic

Cylindrical

Grinder

MACHINES For

GRINDING and LAPPING

PRODUCTS

ABRASIVES • GRINDING WHEELS • REFRACTORIES
FLOOR AND STAIR TILE • AGGREGATES • NORBIDE
PRODUCTS • LABELING MACHINES • ENCAPSULATING

MACHINES

MACHINES FOR

CYLINDRICAL GRINDING • SURFACE GRINDING
CYLINDRICAL AND FLAT LAPPING • UNIVERSAL TOOL
AND CUTTER GRINDING
SPECIALIZED GRINDING • CAM AND SHAPE GRINDING
CRANKPIN AND CRANKSHAFT BEARING GRINDING
AUTOPART REGRINDING

o

UNIVERSAL GRINDING

ROLL GRINDING

- -

| No. 20 Cutter and Tool Grinder

p*

;

6' •

■■

$

10"x 36"

'

Form 1444-1 P-6-5

Semiautomatic Cylindrical Grinder

DISTRIBUTORS IN ALL PRINCIPAL CITIES THROUGHOUT

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NORTON

1-3000

ATTACHMENTS AND EQUIPMENT FOR SPECIAL WORK

MACHINE DIVISION OFFICES

Hartford 7
New York 6
Cleveland 3
Detroit 8

Chicago 32

CABLE ADDRESS: "NORCO

. . . 998 Farmington Avenue

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

. . . 1306 East 55th Street

. . . . 5805 Lincoln Avenue

4737 South Christiana Avenue

COMPANY

WORCESTER 6, MASS

61 Broadway

”

U.S.A.

• /

8" x

24"

No. 26 Hyprolap

THE WORLD

'

Surface Grindor

Machine

Lapping

jM

printed in U.S.A.