HSK-A tool holders
HSK-A Boring Bar Blanks – HSK-A50, HSK-A63 and HSK-A100 (DIN 69893-1)
A boring bar blank is a blank with a hardened taper and a machinable HRc 28–32 body for making special boring bars and tools. PTP makes them with an HSK-A shank (DIN 69893-1 / ISO 12164-1) in HSK-A50, HSK-A63 and HSK-A100: blank Ø30–95 mm, gauge lengths 60–180 mm, 30 ordering codes in all. HSK-A tapers are clamped by the spindle itself, so no pull stud is needed. Hardened AT3 taper, machinable HRc 28–32 body.
Boring Bar Blanks, HSK-A shank
PTP catalogue drawing, dimensions in mm
All 30 HSK-A boring bar blanks
One table per taper size. Every ordering code opens its own page with its dimensions (mm).
HSK-A50 boring bar blanks: 7 ordering codes
| Ordering code | Blank Ø (C) | Gauge Length (GPL) |
|---|---|---|
| 46HSKA50BBB3060 | 30 mm | 60 mm |
| 46HSKA50BBB3560 | 35 mm | 60 mm |
| 46HSKA50BBB4080 | 40 mm | 80 mm |
| 46HSKA50BBB45100 | 45 mm | 100 mm |
| 46HSKA50BBB50100 | 50 mm | 100 mm |
| 46HSKA50BBB55120 | 55 mm | 120 mm |
| 46HSKA50BBB60120 | 60 mm | 120 mm |
HSK-A63 boring bar blanks: 11 ordering codes
| Ordering code | Blank Ø (C) | Gauge Length (GPL) |
|---|---|---|
| 46HSKA63BBB3060 | 30 mm | 60 mm |
| 46HSKA63BBB3560 | 35 mm | 60 mm |
| 46HSKA63BBB4080 | 40 mm | 80 mm |
| 46HSKA63BBB45100 | 45 mm | 100 mm |
| 46HSKA63BBB50100 | 50 mm | 100 mm |
| 46HSKA63BBB55120 | 55 mm | 120 mm |
| 46HSKA63BBB60120 | 60 mm | 120 mm |
| 46HSKA63BBB65120 | 65 mm | 120 mm |
| 46HSKA63BBB70120 | 70 mm | 120 mm |
| 46HSKA63BBB80120 | 80 mm | 120 mm |
| 46HSKA63BBB85120 | 85 mm | 120 mm |
HSK-A100 boring bar blanks: 12 ordering codes
| Ordering code | Blank Ø (C) | Gauge Length (GPL) |
|---|---|---|
| 46HSKA100BBB4080 | 40 mm | 80 mm |
| 46HSKA100BBB45100 | 45 mm | 100 mm |
| 46HSKA100BBB50100 | 50 mm | 100 mm |
| 46HSKA100BBB55100 | 55 mm | 100 mm |
| 46HSKA100BBB60120 | 60 mm | 120 mm |
| 46HSKA100BBB65120 | 65 mm | 120 mm |
| 46HSKA100BBB70150 | 70 mm | 150 mm |
| 46HSKA100BBB75150 | 75 mm | 150 mm |
| 46HSKA100BBB80150 | 80 mm | 150 mm |
| 46HSKA100BBB85180 | 85 mm | 180 mm |
| 46HSKA100BBB90180 | 90 mm | 180 mm |
| 46HSKA100BBB95180 | 95 mm | 180 mm |
Questions about HSK-A boring bar blanks
Does an HSK-A boring bar blank need a pull stud?
No. The spindle clamps the HSK-A taper from inside, so there is no pull stud. For through-spindle coolant the holder takes an HSK-A coolant tube: 47CTHA050 for HSK-A50, 47CTHA063 for HSK-A63 and 47CTHA100 for HSK-A100.
What goes with an HSK-A boring bar blank?
Your own machining: the blank's HRc 28–32 body is made into the boring bar or special tool you need.