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HEULE Counterboring Tools
Back counterboring of bores without rotating the workpiece
BSF
Backspotfacing up to 2.3 x the bore diameter
- Without rotating the workpiece
- Standard range for bore diameter 6.5 mm – 21.0 mm
- Reliable backspotfacing or counterboring
- Blade activation via internal coolant pressure, air pressure or manual activation ring
Range
The standard range consists of back counterboring tools for use with bore diameters ranging from 6.5 mm to 21 mm in 0.5 mm increments. The maximum possible counterboring diameter is 2.3 times the bore diameter. The tools can be activated by internal coolant pressure (min. 20 bar, max. 50 bar), by air pressure (min. 5 bar) or by manual activation ring.

| Bore diameter range | Counterbore diameter | Series |
| 6.5 mm to 7.0 mm | 9.5 mm to 16.5 mm | A series |
| 7.5 mm to 8.5 mm | 11.0 mm to 20.0 mm | B Series |
| 9.0 mm to 10.0 mm | 13.5 mm to 23.0 mm | C Series |
| 10.5 mm to 11.5 mm | 15.5 mm to 26.5 mm | D series |
| 12.0 mm to 14.0 mm | 18.0 mm to 32.5 mm | E series |
| 14.5 mm to 17.0 mm | 21.5 mm to 39.5 mm | F series |
| 17.5 mm to 21.0 mm | 26.0 mm to 49.0 mm | G Series |
Should no standard tool solution be available for your application, HEULE can make a detailed application analysis. The result will be an application-specific solution.













