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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