SK40 ER collet chucks
SK40 (ISO 40) ER25 Collet Chucks (DIN 69871): Gauge Lengths 70, 100, 150 and 200 mm
SK40 (ISO 40) 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 SK shank (DIN 69871 / ISO 7388-1) in gauge lengths of 70, 100, 150 and 200 mm, for tool shanks of 1–16 mm. Ordering codes: 4. SK40 holders are pulled into the spindle by an M16 DIN 69872 pull stud. Taper AT3 or better, TIR 0.005 mm max, balanced G2.5 @ 25,000 rpm.
SK40 (ISO 40) ER25 collet chucks: 4 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) | GPL Long |
|---|---|---|---|---|
| 47ISO40ER2570 | 1–16 mm | 42 mm | 70 mm | 150 mm |
| 47ISO40ER25100 | 1–16 mm | 42 mm | 100 mm | – |
| 47ISO40ER25150 | 1–16 mm | 42 mm | 150 mm | – |
| 47ISO40ER25200 | 1–16 mm | 42 mm | 200 mm | – |
SK40 ER25 collet chuck
PTP catalogue drawing, dimensions in mm
Questions about SK40 ER25 collet chucks
What is the clamping range of an SK40 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.
Which pull stud does an SK40 ER25 collet chuck need?
An M16 SK40 pull stud: DIN 69872 with a 15° head.
Which nut and collets fit an SK40 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).