Jet Tools JTM-4VS operating instructions Table of Contents

Page 3

Table of Contents

 

Section

Page

Warranty and Service

2

Warnings

4

Introduction

6

Specifications

6

Unpacking

7

Contents of the Shipping Container

7

Set-up and Installation

8

Preparing the Milling Machine for Service

8

JTM-4VS Dimensions

9

JTM-4VS Overview and Terminology

10

Electrical Connections

11

General Electrical Cautions

11

Wire Sizes

11

Lubrication

11

Operating Instructions

11

Operating Controls

11

Motor Switch

11

Variable Speed Control

12

Spindle Brake

13

High-Neutral-Low Shift Lever

13

Quill Power Feed Lever

13

Feed Rate Lever

13

Feed Trip Cam Lever

14

Feed Direction Control

14

Coarse Feed Handle

14

Quill Lock Lever

14

Micrometer Adjusting Nut

14

Fine Feed Handwheel

14

Depth Scale and Stop

15

Power Feed Operation

15

Draw Bar Operation - Changing Tooling

16

Clamping Work Piece to the Table

16

Adjustments

16

Mill Head – Left/Right Adjustment

16

Mill Head – Fore/Aft Adjustment

17

Positioning the Ram

18

Positioning the Ram Fore and Aft

18

Positioning the Ram on its Turret

18

Gib Adjustment

18

Adjustment of Knee Gib

18

Adjustment of Saddle Gib

18

Adjustment of Table Gib

18

Power Feed Trip Lever Mechanism

19

Table Lead Screw Backlash Adjustment

19

Cross Feed Backlash Adjustment

19

Longitudinal Backlash Adjustment

19

Maintenance

21

Lubrication

21

Periodic Maintenance Requirements

21

Replacement of Drive Motor

22

Replacement of Vari-Speed Belt

23

Replacement of Brake Shoes, Springs and/or Timing Belt

23

Replacement of Quill Feed Clock Spring

24

Replacement Parts

24

Head Assembly

25

Parts List for Head Assembly

26

Spindle Assembly

29

3

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Contents Part No. M-690182 Variable Speed Turret MillWarranty Period Warranty and ServiceTable of Contents Page Page Introduction Specifications JTM-4VS-1690180 Unpacking Contents of the Shipping ContainerPreparing the Milling Machine for Service Set-up and InstallationInstallation Diagram JTM-4VS DimensionsOverview JTM-4VS Overview and TerminologyOperating Controls Motor SwitchElectrical Connections Operating InstructionsChange speed only while the spindle is turning Variable Speed ControlFeed Rate Lever Quill Power Feed LeverSpindle Brake High-Neutral-Low Shift LeverCoarse Feed Handle Micrometer Adjusting NutFeed Trip Cam Lever Feed Direction ControlPower Feed Operation Depth Scale and StopCCW Clamping Work Piece to the Table AdjustmentsMill Head Left/Right Adjustment Draw Bar Operation Changing ToolingMill Head Fore/Aft Adjustment Positioning the Ram Gib AdjustmentLongitudinal Backlash Adjustment Power Feed Trip Lever MechanismTable Lead Screw Backlash Adjustment Cross Feed Backlash AdjustmentPage Periodic Maintenance Requirements MaintenanceReplacement of Drive Motor Replacement of Brake Shoes, Springs and/or Timing Belt Replacement of Vari-Speed BeltReplacement of Quill Feed Clock Spring Replacement PartsHead Assembly Parts List for Head Assembly Index No. Part No Description Size QtyJTM4VS-HA VS-054 JTM4VS-A002B Spindle Assembly Parts List for Spindle Assembly LA-082 Overload Clutch Lockout LA-083 RINS30 Base Assembly Parts List for Base Assembly JTM4VS-B82 JTM4VS-B79JTM4VS-B80 JTM4VS-B81LT-010BSP-CHR Lead Screw AssemblyOne-Shot Lubrication System ALMP-04-VSJTM4VS-BUTW1458 Electrical Connections Single Phase only Electrical Connections 3 Phase only New Sanford Road LaVergne, Tennessee Phone

JTM-4VS specifications

The Jet Tools JTM-4VS is a highly regarded vertical mill that caters to the demands of both professional machinists and serious hobbyists. This versatile piece of machinery combines precision engineering with innovative features, making it a popular choice in workshops and fabrication shops.

One of the standout characteristics of the JTM-4VS is its powerful 1.5 HP motor that operates on either 115V or 230V power supply, providing flexibility depending on the workshop setup. The motor offers variable speed control, from 60 to 4200 RPM, allowing users to adjust speeds according to the material being machined. This capability makes it ideal for a wide range of applications, from heavy milling on steel to delicate work on softer materials like aluminum.

The JTM-4VS is equipped with a robust cast iron column and base, which contribute to its stability and durability. This construction minimizes vibrations during operation, resulting in improved precision and surface finish on machined parts. The table measures 9” x 49”, providing ample workspace for various projects, and is fitted with T-slots for easy clamping of workpieces.

Another notable feature of the JTM-4VS is its easy-to-use digital readout (DRO) system that assists users in making precise adjustments and measurements. The DRO enhances the overall efficiency of the milling process, allowing operators to focus on the task at hand rather than relying solely on manual measurements.

The machine also incorporates a high-grade, hardened and ground bedway that ensures smooth operation and long-lasting performance. This feature not only extends the longevity of the mill but also allows for precise vertical and horizontal movements.

Safety is a primary concern in any workshop, and Jet has addressed this with various safety features integrated into the JTM-4VS. The mill is designed with a protective shield and emergency stop button, ensuring operators can work confidently.

In summary, the Jet Tools JTM-4VS stands out for its combination of robust construction, versatile functionality, and user-friendly technologies. With its powerful motor, variable speed capabilities, and precision features, it is an excellent investment for anyone looking to enhance their machining capabilities in the workshop. Whether it's for industrial applications or intricate projects, the JTM-4VS delivers reliable performance and exceptional results.