ROCKWELL Horizontal Milling Machine 21-120 Operator’s and Parts Manual

$19.50

Description

Number of Pages: 20

 

This is a reproduction, not a photocopy, of an original Rockwell Horizontal Milling Machine Instruction and Parts Manual for the model 21-120. This Rockwell manual contains information on installation, leveling, and electrical recommendations. The manual covers operating instructions and controls for use. It explains how to use the drive control with a spindle speed chart for the horizontal spindle.

 

The manual also contains service and maintenance instructions covering adjusting the belt tension, adjusting backlash between the back gears and spindle, and a lubrication chart. It has instructions changing belts and gears with a complete set of exploded view diagrams of all the parts with parts descriptions for this Rockwell horizontal milling machine model 21-120.

 

Contents:

INTRODUCTION………………………………………………………………. 1

INSTALLATION

Unpacking………………………………………………………………………….. 3
Selecting Floor Space…………………………………………………………… 3
Cleaning the Mill………………………………………………………………….. 3
Leveling the Mill…………………………………………………………………… 3
Electrical Recommendations…………………………………………………… 4

OPERATION AND CONTROLS

Nomenclature Chart……………………………………………………………… 5
Drive Controls…………………………………………………………………….. 6
Spindle Speeds……………………………………………………………………. 7
Table Controls…………………………………………………………………….. 8
Type of Arbors Used……………………………………………………………. 9
Mounting Style A Arbors………………………………………………………. 9

SERVICE ADJUSTMENTS

Adjusting Belt Tension………………………………………………………….. 10
Adjusting Belt Tensioning Spring…………………………………………….. 11
Adjusting Backlash Between Back Gears and Spindle Gears……….. 11
Gib Adjustment for Table, Saddle, and Knee…………………………….. 12
LUBRICATION CHART…………………………………………………….. 13

Replacing Belts, Pulleys, Gears, Spindle, Spindle Bearings,

and Related Parts…………………………………………………………………. 14
DRAWINGS AND PARTS LIST………………………………………….. 16

Overview:

I have collected this information for many years and have found the information they contain to be priceless in using and setting up the machines properly. I believe this manual will be a valuable resource of knowledge that will provide a lot of helpful information that is often hard to find. My manuals are not photocopies. I maintain a high standard of quality in my reproductions. Most of the manuals I reproduce look better than their originals. I have professionally digitally edited every page, and removed stains, wrinkles and handwriting. All of the manuals are printed on thick white paper to withstand shop wear and tear.

 

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