HSK-A50 ER collet chucks
HSK-A50 ER25 Collet Chucks (DIN 69893-1): Gauge Lengths 100 and 120 mm
HSK-A50 ER25 collet chucks hold round-shank drills, reamers and end mills in a DIN 6499 ER25 collet, closed by the ER25 clamping nut (M18x1.5). PTP makes them with an HSK-A shank (DIN 69893-1 / ISO 12164-1) in gauge lengths of 100 and 120 mm, for tool shanks of 1–16 mm. Ordering codes: 2. HSK-A tapers are clamped by the spindle itself, so no pull stud is needed. Taper AT3 or better, TIR 0.005 mm max, balanced G2.5 @ 25,000 rpm.
HSK-A50 ER25 collet chucks: 2 ordering codes
Every ordering code opens its own page with the drawing and every dimension (mm).
| Ordering code | Clamping Range | Nut Ø (d) | Gauge Length (GPL) |
|---|---|---|---|
| 47HSKA50ER25100 | 1–16 mm | 42 mm | 100 mm |
| 47HSKA50ER25120 | 1–16 mm | 42 mm | 120 mm |
HSK-A50 ER25 collet chuck
PTP catalogue drawing, dimensions in mm
Questions about HSK-A50 ER25 collet chucks
What is the clamping range of an HSK-A50 ER25 collet chuck?
1–16 mm. ER25 collets to DIN 6499 clamp tool shanks from 1 to 16 mm, one collet for each size step.
Does an HSK-A50 ER25 collet chuck need a pull stud?
No. The spindle clamps the HSK-A taper from inside. For through-spindle coolant it takes the 47CTHA050 HSK coolant tube.
Which nut and collets fit an HSK-A50 ER25 collet chuck?
ER25 collets to DIN 6499 and the ER25 clamping nut: slotted 36CCNER25. For coolant-through tools, an ER25 sealing ring (11 sizes, 36CCNER25SR060 to 36CCNER25SR160).