For Use With All Blackalloy™ Series 150 & 250 Drill Units
Available for 150 series drill units in Ø1/4" and Ø3/8" capacities.
Available for 250 series drill units in Ø3/8" and Ø1/2" capacities.
Available for 350 series drill units in Ø1/2" and Ø5/8" capacities.
| Key Type Chuck Selection Chart | |||||||||
| Chuck Size |
A | B | C | D | E | F | TIR (Max) See Note | Fig | Blackalloy P/N |
| 0-1/4 0-6.5mm |
1JT | .84 | 1.12 | .656 | 1.54 | 1.92 | .004 @ 1 | 1 | 6121-J1 |
| 0-1/4 0-10mm |
3/8/24 | .84 | 1.12 | .63 | 1.571 | 1.95 | .004 @ 1 | 1 | 6121-TH |
| 0-3/8 0-10mm |
3/8/24 | 1.24 | 1.24 | .63 | 2.17 | 2.81 | .004 @ 1.5 | 1 | 6390-TH |
| 5/64-1/2 2-13mm |
3/8/24 | 1.25 | 1.79 | .63 | 2.41 | 3.11 | .004 @ 1.5 | 1 | 6500-TH |
| 0-3/8 0-10mm |
1/2-20 | 1.00 | 1.43 | .63 | 2.02 | 2.49 | .004 @ 1.5 | 1 | 6390-H5 |
| 0-3/8 0-10mm |
2JT | 1.24 | 1.67 | .875 | 2.17 | 2.81 | .004 @ 1.5 | 1 | 6390-J2 |
| 0-1/2 0-13mm |
2JT | 1.56 | 2.04 | .875 | 2.74 | 3.56 | .004 @ 1.5 | 1 | 6500-J2 |
| 3/32-5/8 2.5-15.8mm |
5/8-16 | 1.75 | 2.30 | 1.12 | 2.85 | 3.80 | .006 @ 1.5 | 1 | 6625-H6 |
| Dimensions in Inches | |||||||||
Notes
TIR @ Distance from Nose
JT = Jacobs Taper #1 or #2
3/8"-24 = Internal Thread
1/2"-20 = Internal Thread
5/8"-16 = Internal Thread
Copyright © 2023 . Mendenhall Industries
