Products
BT Taper Specifications
- Meets or exceeds JIS B6339-1986 specifications. Refer to Manufacturing Specifications for taper information.
- Taper is toleranced so that any error increases rate of taper only. Refer to Manufacturing Specifications for tolerance specifications.
- Parlec provides tooling in a variety of taper styles including V-Flange, NMTB, ISO 7388 (DIN NOTCH), ISO 7388/1 (DIN 69871/B), Morse, Automotive, Kearney and Trecker, Sundstrand, and others upon request.
- Refer to Manufacturing Specifications for taper accuracies.
BT Tapers
| Taper Type | Gageline D1 | D2 | L1 | L2 | L3 | L4 | L5 | Thread |
|---|---|---|---|---|---|---|---|---|
| B30 | 1.250 | 1.811 | 1.906 | 0.865 | 0.787 | 0.646 | 0.637 | M12 – 1.75 |
| B35 | 1.500 | 2.085 | 2.225 | 0.944 | 0.866 | 0.756 | 0.555 | M12 – 1.75 |
| B40 | 1.750 | 2.480 | 2.575 | 1.062 | 0.984 | 0.881 | 0.640 | M16 – 2.0 |
| B45 | 2.250 | 3.347 | 3.260 | 1.300 | 1.182 | 1.142 | 0.765 | M20 – 2.5 |
| B50 | 2.750 | 3.937 | 4.008 | 1.496 | 1.378 | 1.390 | 1.016 | M24 – 3.0 |
