JET JTM-1050VS2 Operating Instructions and Parts Manual

.JET

EQUIPMENT & TOOLS

OPERATOR'S MANUAL

JTM-1050 Turret Mill

JET EQUIPMENT & TOOLS, INC.

A WMH Company

P.O.BOX 1349

Auburn, WA98071-1349

253-351-6000
Fax [phone]

M-690050 5/98

Important Information

1 YEAR

LIMITED WARRANTY

JET offers a one year limited
warranty on this product

REPLACEMENT PARTS

Replacementparts for this tool are availabledirectlyformJET Equipment&Tools.
To place anorder, call 1-800-274-6848. Pleasehavethe following information ready:

1. Visa, MasterCard, or Discover Card number

2. Expirationdate

3. Part numberlisted within this manual

4. Shippingaddress other than a Post Office box.

REPLACEMENT PART WARRANTY

JET Equipment & Tools makes everyeffort to assure that parts meet high quality and durability standards
and warrants to the original retail consumer/purchaserof our parts that each such part(s) to be free from
defects in materials andworkmanshipfor a periodof thirty (30) daysfrom thedate of purchase.

PROOF OF PURCHASE

Please retain your datedsales receiptas proof of purchaseto validate the warranty period.

LIMITED TOOL AND EQUIPMENTWARRANTY

JET makes every effort to assure that its products meet high quality and durability standards and warrants to the
original retail consumer/purchaser of our products that each product be free from defects in materials and
workmanship as follows: 1 YEAR LIMITED WARRANTY ON THIS JET PRODUCT. Warranty does not apply to
defects due directly or indirectly to misuse, abuse, negligence or accidents, repairs or alterations outside our

facilities or to a lack of maintenance. JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED
ABOVE FROM THE DATE THE PRODUCTWAS PURCHASEDAT RETAIL. EXCEPTAS STATED HEREIN, ANY

IMPLIED WARRANTIES OR MECHANTABILITY AND FITNESS ARE EXCLUDED. SOME STATES DO NOT

ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY

NOT APPLY TO YOU. JET SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR
PROPERY OR FOR INCIDENTAL, CONTINGENT, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING FROM

THE USE OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF

INCIDENTAL OR CONSEQUENTIALDAMAGES,SOTHE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY

TO YOU. To take advantage of this warranty, the product or part must be returned for examination, postage

prepaid, to an authorized service station designated by our Auburn office. Proof of purchase date and an
explanation of the complaint must accompanythe merchandise. If our inspection discloses a defect, JET will either
repair or replace the product or refund the purchase price, if we cannot readily and quickly provide a repair or
replacement, if you are willing to accept such refund. JET will retum repaired product or replacement at JET's
expense, but if it is determined there is no defect, or that the defect resulted from causes not within the scope of
JET's warranty, then the user must bear the cost of storing and returning the product. This warranty gives you
specific legal rights, and you haveother rightswhich vary from stateto state.

JET Equipment & Tools. P.o. Box 1349,Auburn, WA 98071-1349 . [phone]

Lt WARNING

.

Read and understand the entire
instruction manual before attempting set-
up or operation of this machine. "horse-play"arecarelessactsthatcanresult

.

Always wear approved safety glasses/face
shields while usingthis machine.

.

Makecertainthemachineisproperly

grounded.

.

Beforeoperatingthemachine,removetie,
rings,watches,otherjewelry,androllup

sleeves above the elbows. Remove all

loose clothing and contine longhair. Do not

wear gloves.

.

Keeptheflooraroundthemachineclean
andfreeofscrapmaterial,oilandgrease.

.

Keep machine guards in place at all times healthif not used properly. Read and

when the machine is inuse. If removedfor understandall user informationlisted on the

maintenance purposes, use extreme caution
and replace the guards immediately. accordingly.

.

Do not over reach. Maintaina balanced
stance at all times so that you do notfall or
lean against blades or other moving parts.

.

Make all machineadjustments or
maintenance with the machine unplugged
from the power source.

.

Giveyourworkundividedattention.Looking

around,carryingona conversation,

in serious injury.

.

Keepvisitorsasafedistancefromthework
area.

.

Userecommendedaccessories;improper

accessories may be hazardous.

.

Keephands away from all moving parts
(belts,cutters, gears, etc.).

.

Neveroperatethismachineunderthe
influenceofalcoholordrugs.

.

Somecoolantsusedformachiningcontain
chemicalsthatmaybehazardousto your

coolantcontainerand protect yourself

.

Readand understandall warnings posted on
the machine.

.

This manualis intended to familiarize you
with thetechnical aspects of this milling
machine. Itis not, norwas it intended to be,
a trainingmanual.

and

.

Usethe light tool. Don'tforce a tool or

attachmenttodoajobwhichitwasnot
designedfor.

.

This machineis designed and intended
for useby

experienced personnel only. Ifyou are

properlytrained and

not familiarwiththe proper safeuse of

.

Replacewarninglabelsif theybecome milling machines, do not use this

obscuredor removed.

.

Make certain the motor switch is in the OFF

positionbeforeconnectingthemachineto

the power supply.

machine until proper training and
knowledge has been obtained.

.

Failureto complywith all of these warnings
may cause serious injury.

Specifications

Stock Number 690050

SpindleTaper

Diameter of Quill 3.375"
Number of Spindle Speeds Variable
Range of Spindle Speeds 80 to 3800 RPM
Downfeeds per Revolution of Spindle 0015",.003",.006"

Spindle Travel ... ..."""'" """"""""""""'" 5"

Head Movement 90°Land R

Maximum Distance Spindle Nose to Table "19"
Maximum Distance Spindle Center to Column 26 1/2"

; R-8

JTM-1050

45°F and B

MinimumDistanceSpindle Centerto Column """'" 6"
TableSize

Longitudinal Table Travel ... ... '" ... "" 35"

Table Cross Travel.. ...... """ ... ... 16"

Number of T-Slots 3
Size and Spacing of T-Slots 5/8"x2-1/2"

"""'" ... 10"x50"

MaximumTable Load """""""""""" ... 720Lbs.

Knee Travel ,.. 161/2"

Overall Dimensions , 96 1/4"Wx77"Dx873/4"H

Motot 3HP, 3ph" 230/460V

... Prewired 230V

Net Weight (approx.) 2820Lbs.

Table of Contents

Important Information""""""""'"'''' 1
Warnings 2
Specifications 3

Table of Contents ... ... ... ... """""" ... "'" 3

Installation Layout 4

Shipping Container Contents... """""" ... ...... '" ... '" """"""""" 5

Unpacking and Clean-Up ',' 5

Site Preparation 5

Lifting the Mill 5

Lubrication"""""'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' 6

Electrical Connections 7

Controls.. ... ........... ." ........... .'" .. ... ... ... ... ..."'" ..... ....... 7-9

Operating Precautions 9

Changing Speed Range 10

Setting Up for Fine Hand Feed 10

Setting Up for Automatic Feed 11

Adjustments 11-12

Parts Lists and Breakdowns.. """"" "'" '" ... """" 13-27

Electrical Schematic 28

The specifications in this manual are given as generalinformation and are notbinding. JET Equipment
and Tools reserves the right to effect. at any time andwithout prior notice,changes or alterations to parts.
fittings, and accessory equipmentdeemed necessaryfor any reason whatsoever.

3

"'-

JTM-1050 Installation Layout

24"

20 1/2"

IN

~;:

0J

I

lO;: "'-

0J

(J1

'-J

~

(J)

r-

I:

e=8 I

~

. L__-

5/8" Diameter
Hold Down Bolt

'-J

'{

- --,

---1 .

/

,-,.

I'

,I .

,!:b::J.

~

19 3/4"

96 1/4"

4

Fi9 . 1

ShippingContainer Contents

1

Mill

1

FlatWay Cover (rear)

1

Accordion Way Cover (front)

1

Tool Box:

1 Hex Wrench Set (1.5 -10mm)
1 19mmCombination Wrench

1 #2 Cross Point Screw Driver
1 #2 Flat Blade Screw Driver

1 PlasticOil Can
1 Operator's Manual
1 V\!arrantyCard

1 Eye Bolt

Unpacking and Clean-Up

1.

Finish removing the sides and top of the crate.

Leave the mill bolted to the skid until it is ready

to move to its final location.

2.

Clean all rust protected surfaces with kerosene

or a light solvent. Do not use gasoline, paint
thinner, or lacquer thinner. These will damage
painted surfaces.

3.

Cover all machined surfaces with a film of light

machine tool oil to inhibit rust.

Site Preparation

ffi Caution

Mill must be supported equally under all four

corners. Failure to comply may cause the

column to twist and put a bind in the bedways.

The mill must be placed on an evensurface and
bolted to the floor. Anchor boltsof sufficientsize and

length must befastened to the floor accordingto the

footprint of the mill. See Fig. 1.

Lifting the Mill

The preferred method for lifting the mill iswith a hook
through the eye bolt screwed intothe tapped holeon
the ram. Becarefulto steady the mill to prevent it
from spinning.

5

An alternative methodfor liftingthe milliswith a
sling. Follow the diagram in Fig. 2 for the proper
positionof the sling underthe ram. Notethe position

of the ramand that thetable has been moved
against the column. Tighten ramlocking bolts (A,

Fig.2) before lifting.
Carefully lift the mill and move to a positionover the

anchor bolts. Lower the mill over the anchor bolts,
check for level, and secure with washers and anchor

bolt nuts.
Check the millfor level with a machinist'slevel

placed on the table. Mill must be level backto front
and side to side. Shim if necessary, butremember
that the mill must be supported equally atall four
corners. Check for level beforetighteningthe anchor
bolt nuts and after tightening them. Adjustas
necessary.

J

.JET

"11'1'"

"~A

Lubrication

~ Caution

Do not operate the mill before lubricating the

machine fully. Failure to comply may cause

damage to the machine.

Reference Fig. 3 for parts of the mill to lubricate:

A. Spindle Bearings- fill oil cup once dailywith

10W machine oil

B. Oil Pump- fill reservoir as neededby removing

cap on top of tank and fillingwith 10Wmachine
oil. Pump oil with releasehandle once for
every hour of operation. Way surfacesand

leadscrews are lubricatedinthis manner.

C. Knee Leadscrew-lubricate with #2 tubegrease

once weekly.

Fig.2

A

M

Fig.3

6

Electrical Connections

~ WARNING

All electrical connections must be made by a

qualified electrician!

Failure to comply may cause serious injury!

The JTM-1 050 mill is rated at 230/460V and comes
from the factory prewired at 230V.

Confirm powerat the site matches power

requirements of the millbeforeconnectingto the

power source.
To change from 230V to460V operation, removethe

junction box cover on the rear of the motorand

change the wires accordingto the diagram foundon
the inside of the cover.

The mill must be properly grounded.
Check for proper spindle rotationin the highspeed

range. The spindleshould rotate clockwisewhen

viewed from the top ofthe machine. Ifthe spindle

rotatescounter-clockwise, switchtwo of thethree
power leads.

Controls

A. Variable Speed Control (A, Fig. 4) -located on

the right side of the headassembly. Turn
clockwise or counter-clockwise to adjust
spindle speed. Caution: change speed only
when spindle is turning.

B. Variable Speed Dial Indicator (B, Fig.4)-

located on the front of the head assembly.
Indicatesselected speed in high or low range.

C. Spindle Brake (C, Fig.4) - locatedon left side

of the head. Move in either directionto stop
spindle once powerhas beenturned off.

C

Fig.4

7

D. High-Neutral-Low Lever (D, Fig. 5) - locatedon

the right side of the head. Upper position is
high speed (direct drive). Middleposition is

neutral. Lower position is low speed (back

gear).

Caution

Do not shift High-Low Gear while motor is

running. Rotate the spindle by hand to facilitate

changing lever positions.

E. Power FeedTransmission Engagement

Crank (E, Fig. 5) - locatedon rightside of

head. When lever is inthe right hole,the
power feed worm gear isdisengaged. To

engage power feed, pull knobout and move

lever aroundto oppositehole. Engagepin in
hole.

Caution

Engage gently to avoid damage to the worm

gear.

Power feed may be engaged when spindle is

rotating, however, it must be engaged gently to

avoid damage to the worm gear.

Do not use power feed at speeds above 3000

R.P.M.

It is recommended that the power feed worm

gear be disengaged whenever the power feed is

not required. This avoids unnecessary wear on

the worm gear.

D

F

F. Quill Feed Handle (F, Fig. 5) - locatedon right

side of head. Rotateclockwiseto lower
spindle. Return spring will retractthe spindle

automatically oncethe handleis released.

G. Quill Lock(G, Fig. 5) - locatedon the right side

of the head. Rotate the handleclockwiseto

lock the quill in a desired position. Rotatethe
handle counter-clockwiseto release.

H. MicrometerAdjusting Nut (H, Fig.5), -located

on the front of the head. Usefor setting
specific spindledepth.

I.

Feed Control Lever (I, Fig. 5) -located onthe

left side of the head. Engagesoverloadclutch

on pinion shaft when positionedto the left.

Stays engaged untilquill stopcomes incontact

H

G

Fig.5

8

with micrometer adjustingnut(forcingfeed
control lever to drop out automatically),or until

lever is releasedmanually by engagingleverto

the right.

J.

Manual Feed (J, Fig.6) - locatedon the left side

of the head. Feedreversingknob (K, Fig.6)
must be inthe neutralposition. The feed
control lever (I, Fig. 6) mustbe engaged.
Note: manualfeed handleand handwheelmay

be taken off when notin use.

K. Feed Reversing Knob (K, Fig.6) - located in

center of manualfeed handwheel Positionof

the handle depends uponthe direction of

spindle rotation. Ifboringwith right hand

cutting tools, pullfeed handletowardsoperator

until clutch becomes engaged. Neutralposition
is betweenforward and reverseposition.

Caution

It is recommended that the handle be left in the

neutral position when not in use.

N

L.

Quill Stop (L,Fig.6) - located on the front of

head. Usedto disengagethe automaticfeed in
either direction as well as the setting pointfor
working to a given depth.

M. Quill Feed Speed Selector (M, Fig. 6) - located

on the leftside of the head. Pull knob out and
locate handleover choice of threefeed speeds

- .0015", .003", .006" Downfeedsper spindle
revolution. Feed is morereadilyengagedwhen
spindle isturning.

N. Reversing Switch (N, Fig. 6) -located on the

left side of the head. Switchesrotationof
spindle.

Operations

Operating Precautions

1.

Do not attempt to change spindle RPM while

motor is stopped.

K

Fig.6

L

2.

Be certain the spindle brake is releasedbefore

starting the motor.

9