For: Pratt Burnerd, Buck, Cushman, S. P. and others
Products
Top Tooling American Standard: Acme Serrations
| Soft Jaws | ||||||||
|---|---|---|---|---|---|---|---|---|
| Chuck Size | Part Number | Length A | Height B | Width C | Tongue D | Bolt Size E | Hole Spacing F | Key Slot G |
| 8" | 7749-22038 | 3.75" | 2.0" | 1.5" | .67" | 1/2" | 1.25 | .601" |
| 10" | 7749-26047 | 4.12" | 2.31" | 1.75" | .75" | 1/2" | 1.75" | 1.031" |
| 12" | 7749-32056 | 5.12" | 2.31" | 1.75" | .875" | 5/8" | 2.0" | 1.031" |
| 15", 18" & 20" | 8140-40533 | 6.0" | 3.31" | 2.5" | 1.0" | 3/4" | 2.5" | 1.531" |
| 21"-Up | 8140-50533 | 6.0" | 3.31" | 3.0" | 1.25" | 7/8" | 3.0" | 1.531" |
| Chuck Size | Part Number | H | Tapped Hole T | Offset Pointed Part Number | Offset Pointed A | H | Extra High Part Number | Extra High B |
| 8" | 7749-22038 | 2.12" | 10-24 | 7749-22038OP | N/A | 7749-22038EH | N/A | |
| 10" | 7749-26047 | 2.12" | 5/16"-18 | 7749-26047OP | 5.5" | 3.5" | 7749-26047EH | 3.31" |
| 12" | 7749-32056 | 2.87" | 5/16"-18 | 7749-32056OP | 5.5" | 3.25" | 7749-32056EH | 3.31" |
| 15", 18" & 20" | 8140-40533 | 2.62" | 3/8"-16 | 8140-40533OP | 7.5" | 4.25" | 8140-40533EH | 4.81" |
| 21"-Up | 8140-50533 | 2.62" | 3/8"-16 | 8140-50533OP | 7.5" | 4.25" | 8140-50533EH | 4.81" |
| T-Nuts | ||||||||
|---|---|---|---|---|---|---|---|---|
| Chuck Size | Part Number | Length A | Height B | Width C | Neck D | Bolt Size E | Hole Spacing F | Shoulder G |
| 8" | 2749-02407 | 2.0" | 1.0" | .94" | .670" | 1/2"-13 | 1.25" | .44" |
| 10" | 2749-02417 | 2.5" | .64" | .94" | .678" | 1/2"-13 | 1.75" | .38" |
| 12" | 2749-02427 | 3.0" | .74" | 1.06" | .802" | 5/8"-11 | 2.0" | .44" |
| 15", 18" & 20" | 8130-40531 | 3.5" | .93" | 1.25" | .933" | 3/4"-10 | 2.5" | .55" |
| 21" & Up | 8130-50531 | 4.25" | 1.18" | 1.55" | 1.159" | 7/8"-9 | 3.0" | .68" |
| Keys | ||||||
|---|---|---|---|---|---|---|
| Chuck Size | Part Number | Length A | Height B | Width C | Neck D | Bolt Size E |
| 8" | 2749-02405 | 1.5" | .38" | .6" | .156" | 10–24 |
| 10" & 12" | 2749-02415 | 1.70" | .5" | 1.030" | .25" | 5/16"-18 |
| 12" | 2749-02425 | 2.25" | .5" | 1.030" | .25" | 5/16"-18 |
| 15” & Up | 8130-40530 | 2.87" | .5" | 1.530" | .25" | 3/8"-16 |
| Hard Top Jaws | |||||||
|---|---|---|---|---|---|---|---|
| Chuck Size | Part Number | Length A | Height B | Width C | Tongue D | Slot E | Bolt Spacing F |
| 8" | 7749-22036 | 3.50" | 2.0" | 1.75" | .67" | .601" | 1.25" |
| 10" | 7749-26042 | 4.25" | 2.50" | 1.75" | .75" | 1.031" | 1.75" |
| 12" | 7749-32052 | 4.87" | 2.50" | 1.75" | .87" | 1.031" | 2.0" |
| 15", 18" & 20" | 8130-40632 | 5.5" | 3.31" | 2.5" | 1.0" | 1.531" | 2.5" |
| 21" & Up | 8130-50532 | 6.5" | 3.31" | 2.5" | 1.25" | 1.531" | 3.0" |