1939 Specifications for 9-inch "Workshop"
Lathes Models A, B, and C |
This page has changed from the original specs posted, which were from 1942. They are being updated to include other lathes from that series. In the meantime, see specifications for other series. All 9-inch swing "Workshop" precision lathes are identical in workmanship, material and quality, and have similar headstock, saddle and bed as larger industrial size South Bend lathes. |
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Capacity of Lathe |
| Swing over bed and saddle wings | 9 1/4 in |
| Swing over saddle cross slide | 5 1/2 in |
Threads and Feeds |
Model A Lathe - Quick Change Gear and Automatic Apron |
| Threads - 48 selections R. H. or L. H. |
4 to 224 per inch |
| Longitudinal Feeds - friction clutch - 32 selections R. H. or L. H. |
.0015" to .0213" |
| Cross Feeds - friction clutch - 32 selections R. H. or L. H. |
.0004" to .0063" |
Model B Lathe - Independent Change Gear and Automatic Apron |
| Threads - 45 selections R. H. or L. H. |
4 to 160 per inch |
| Longitudinal Feeds - friction clutch - 26 selections R. H. or L. H. |
.0021" to .0155" |
| Cross Feeds - friction clutch - 23 selections |
.001" to .0046" |
Model C Lathe - Independent Change Gear and Plain Apron |
| Threads - 45 selections R. H. or L. H. |
4 to 160 per inch |
| Longitudinal Feeds - friction clutch - 14 selections R. H. or L. H. |
.0021" to .0156" |
| Cross Feeds - friction clutch - 23 selections |
Hand operated |
| Lead screw diameter and threads per inch | 3/4" - 8 |
| Large spindle bearing | 1 13/16" dia. x 2 1/4" long |
| Small spindle bearing | 1 3/8" dia. x 1 3/8" long |
| Hole through spindle | 3/4" |
| Maximum collet capacity | 1/2" |
| Size of Morse taper center | No. 2 |
| Spindle nose diameter and threads per inch | 1 1/2" - 8 |
| Width of cone pulley step for belt | 1" |
| Face plate diameter | 5 1/8" |
Standard Spindle Speeds |
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| Standard spindle speeds (subject to five percent variation) | ||||||||||||
| RPM of spindle, back gears engaged | 41 | 72 | 127 | |||||||||
| RPM of spindle, direct belt driven | 212 | 370 | 658 | |||||||||
| High Spindle Speeds in addition to Standard spindle speeds Regular equipment on 12-speed lahtes, optional on other models at extra cost |
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| RPM of spindle, back gears engaged | 79 | 138 | 246 | |||||||||
| RPM of spindle, direct belt driven | 408 | 716 | 1270 | |||||||||
| V-Belt Driven Lathe Spindle Speeds | ||||||||||||
| RPM of spindle, back gears engaged | 46 | 63 | 85 | 117 | ||||||||
| RPM of spindle, direct belt driven | 239 | 326 | 442 | 609 | ||||||||
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| Cross slide travel | 5 7/8" |
| Angular hand feed of compound rest top slide | 2 1/4" |
| Size of opering for tool holder shank | 3/8" x 3/4" |
| Size of cutter bits tool holder takes | 1/4" square |
| Size of Morse taper centers | No. 2 |
| Spindle travel | 2 1/8" |
| Each graduation on tailstock spindle advances spindle | 1/16" |
| Tailstock top will set over for taper turning | 11/16" |
| Horsepower of motor required for 9-inch "Workshop" motor driven lathes | 1/4 H.P. |
| Horsepower of motor required for 9-inch "Workshop" 12-speed motor driven lathes | 1/3 H.P. |
| RPM of standard motor | 1725 RPM |
| Number of V-belts used | 1 |
| Applying only to lathes with metric lead screw and metric graduations. | |
| Model A Quick Change Gear - 46 threads R. H. or L. H. |
7.5 mm to 0.2 mm |
| Model B Standard Change Gear - 35 threads R. H. or L. H. |
7.0 mm to 0.2 mm |
| Model C Standard Change Gear - 35 threads R. H. or L. H. |
7.0 mm to 0.2 mm |
| Lead screw pitch | 3.0 mm |
| Cross feed screw pitch | 2.5 mm |
| Compound rest feed screw pitch | 2.5 mm |
| Each graduation on cross feed micrometer collar advances tool | 0.02 mm |
| Each graduation on compound rest micrometer collar advances tool | 0.02 mm |
| Each graduation on tailstock spindle advances spindle | 1.0 mm |
| Headstock | Apron | Change Gears | |
| Workshop Lathe Catalog Numbers | Workshop Lathe Specifications | ||
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