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Technical Reference
Shank dimensions and cone tolerances for every taper PTP CNC manufactures — BT, SK/ISO, CAT, HSK-A, HSK-B and DIN 2080.
MAS-BT Shank
MAS BT · ISO 7388/2-J · JIS B6339
Shank Dimensions
| BT No. | D | L±0.2 | d1H8 | G | D1h8 | f±0.2 | v±0.1 | w | y±0.4 | t-0.2 | bH12 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 30 | 31.75 | 48.4 | 12.5 | M12 | 46 | 20 | 13.6 | 8 | 2 | 16.3 | 16.1 |
| 35 | 38.10 | 56.4 | 12.5 | M12 | 53 | 22 | 14.6 | 10 | 2 | 19.6 | 16.1 |
| 40 | 44.45 | 65.4 | 17 | M16 | 63 | 25 | 16.6 | 10 | 2 | 22.6 | 16.1 |
| 45 | 57.15 | 82.8 | 21 | M20 | 85 | 30 | 21.2 | 12 | 3 | 29.1 | 19.3 |
| 50 | 69.75 | 101.8 | 25 | M24 | 100 | 35 | 23.2 | 15 | 3 | 35.4 | 25.7 |
All dimensions are in mm.
Every PTP CNC tool holder is offered across these shank standards. Pick a shank on the Tool Holders page to see the full product range and ordering codes for that taper.