SK50 ER collet chucks
SK50 (ISO 50) ER20 Collet Chucks (DIN 69871): Gauge Lengths 80, 100, 150 and 200 mm
SK50 (ISO 50) ER20 collet chucks hold round-shank drills, reamers and end mills in a DIN 6499 ER20 collet, closed by the ER20 clamping nut (M12x1.5). PTP makes them with an SK shank (DIN 69871 / ISO 7388-1) in gauge lengths of 80, 100, 150 and 200 mm, for tool shanks of 1–13 mm. Ordering codes: 4. SK50 holders are pulled into the spindle by an M24 DIN 69872 pull stud. Taper AT3 or better, TIR 0.005 mm max, balanced G2.5 @ 25,000 rpm.
SK50 (ISO 50) ER20 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) |
|---|---|---|---|
| 47ISO50ER2080 | 1–13 mm | 34 mm | 80 mm |
| 47ISO50ER20100 | 1–13 mm | 34 mm | 100 mm |
| 47ISO50ER20150 | 1–13 mm | 34 mm | 150 mm |
| 47ISO50ER20200 | 1–13 mm | 34 mm | 200 mm |
SK50 ER20 collet chuck
PTP catalogue drawing, dimensions in mm
Questions about SK50 ER20 collet chucks
What is the clamping range of an SK50 ER20 collet chuck?
1–13 mm. ER20 collets to DIN 6499 clamp tool shanks from 1 to 13 mm, one collet for each size step.
Which pull stud does an SK50 ER20 collet chuck need?
An M24 SK50 pull stud: DIN 69872 with a 15° head.
Which nut and collets fit an SK50 ER20 collet chuck?
ER20 collets to DIN 6499 and the ER20 clamping nut: slotted 36CCNER20 or hex 36CCNER20A. For coolant-through tools, an ER20 sealing ring (8 sizes, 36CCNER20SR060 to 36CCNER20SR130).
ER collets DIN 6499 Slotted ER collet nuts Hex ER collet nuts ER sealing rings