The UNISIG B-series machines with ballscrew feed use the BTA process to deep drill holes in the center of round parts. Very high accuracy and complex multiple-step bores are possible, as well as high power, large diameter production drilling.
| Description | B380 |
|---|---|
| BTA solid drill | 65mm (2.6in) |
| BTA counterbore/trepan | 100mm (3.9in) |
| Drill depth | 1.5M - 3.5M (5ft - 10ft) |
| Description | B500 |
|---|---|
| BTA solid drill | 100mm (3.9in) |
| BTA counterbore/trepan | 150mm (5.9in) |
| Drill depth | 1.5M - 6.0M (5ft - 20ft) |
| Description | B600 |
|---|---|
| BTA solid drill | 150mm (5.9in) |
| BTA counterbore/trepan | 200mm (8in) |
| Drill depth | 1.5M - 6.0M (5ft - 20ft) |
| Description | B700 |
|---|---|
| BTA solid drill | 200mm (8in) |
| BTA counterbore/trepan | 300mm (12in) |
| Drill depth | 1.5M - 6.0M (5ft - 20ft) |