Selecting the chuck mounting:
- For short taper spindle noses Type A & D, measure the pilot diameter and length (B), bolt circle diameter (dimensions F1 & F2) and diameter of the holes (dimensions E1 & E2)
- In the case of A type mount, check the number of bolt circles (A2 mount or A1 mount).
- All chucks with A1 mounting chuck can only be mounted on A1 spindle head.
- All chucks with A2 mounting can be mounted on the A1 or A2 spindle nose.
- For the Camlock spindle type D1, check the number of holes and stud diameter.
- For the long taper spindle noses Type L, check pilot diameter, length and thread size (A & B).
- For the threaded spindle noses, check the thread diameter, number of threads per inch and length (dimensions B & D), plus overall length (dimension F)
Camlock Spindle Tpye D1
| Spindle Nose | A | F | B | C max. | E | No. of Holes | Camlock Stud Dia |
|---|---|---|---|---|---|---|---|
| D1-3 | 3.622" | 2.7820" | 2.1250"+0.00025" | 0.4375" | 0.5937" | 3 | 9/16" |
| D1-4 | 4.606 | 3.2500 | 2.5005+0.0005 | 0.4375 | 0.6562 | 3 | 5/8 |
| D1-5 | 5.748 | 4.1250 | 3.2505+0.0005 | 0.5000 | 0.8750 | 6 | 3/4 |
| D1-6 | 7.126 | 5.2500 | 4.1880+0.0005 | 0.5625 | 1.000 | 6 | 7/8 |
| D1-8 | 8.858 | 6.7500 | 5.50075+0.0005 | 0.6250 | 1.125 | 6 | 1 |
Threaded Spindle
| Spindle Nose A | B | F1 | D | E |
|---|---|---|---|---|
| 1"-10" UNS-2B | 1.015" | 1.500" | 0.4375" | 1.000" |
| 1"-1/2" -8" UNS-2B | 1.515" | 1.500" | 0.4375" | 1.000" |
| 2-3/16"-10" UNS-2B | 2.2025" | 1.750" | 0.5625" | 1.125" |
| 2-1/4"-8" UNS-2B | 2.260" | 1.750" | 0.5625" | 1.125" |
| 2-3/16"-6" UNS-2B | 2.2025" | 1.750" | 0.5625" | 1.125" |
| 2-3/4"-8" UNS-2B | 2.760" | 2.0625" | 0.6875" | 1.3125" |
Spindle Type A1 & A2
- Type A1 has tapped holes on both inner and outer bolt circles.
- Type A2 does not have holes in the inner bolt circles.
| Spindle Nose | F1 | F2 | B | C max. | Thread E1=E2 UNC-3B |
|---|---|---|---|---|---|
| A-4 | 3.2500" | - | 2.5005"+0.0005" | 0.4375" | 7/16-14" |
| A-5 | 4.1250" | 2.4374 | 3.2505"+0.0005" | 0.5625" | 7/16-14" |
| A-6 | 5.2500" | 3.2500 | 4.1880"+0.0005" | 0.6250" | 1/2-13" |
| A-8 | 6.7500" | 4.3750 | 5.50075"+0.0005" | 0.6875" | 5/8-11" |
Long Taper Key Drive, Spindle Type L
| Spindle Nose | Thread B | C | A | Key |
|---|---|---|---|---|
| L00 | 3-3/4" - 6" | 2 | 2.75" | 3/8 x 3/8 x 1-1/2" |
| L0 | 4-1/2" - 6" | 2-3/8 | 3.250" | 3/8 x 3/8 x 1-3/4" |
| L1 | 6" - 6" | 2-7/8 | 4.125" | 5/8 x 5/8 x 2-3/8" |
| L2 | 7-3/4" - 5" | 3-3/8 | 5.250" | 3/4 x 3/4 x 2-7/8" |
| L3 | 10-3/8" - 4" | 3-7/8 | 6.500" | 1 x 1 x 3-1/4" |