BT30 ER collet chucks
BT30 ER25 Collet Chucks (MAS 403): Gauge Lengths 60, 100 and 150 mm
BT30 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 a BT shank (MAS 403 / JIS B6339, ISO 7388-2 type J) in gauge lengths of 60, 100 and 150 mm, for tool shanks of 1–16 mm. Ordering codes: 3. BT30 holders are pulled into the spindle by an M12 MAS-BT or JIS B6339 pull stud. Taper AT3 or better, TIR 0.005 mm max, balanced G2.5 @ 25,000 rpm.
BT30 ER25 collet chucks: 3 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) |
|---|---|---|---|
| 47BT30ER2560 | 1–16 mm | 42 mm | 60 mm |
| 47BT30ER25100 | 1–16 mm | 42 mm | 100 mm |
| 47BT30ER25150 | 1–16 mm | 42 mm | 150 mm |
BT30 ER25 collet chuck
PTP catalogue drawing, dimensions in mm
Questions about BT30 ER25 collet chucks
What is the clamping range of a BT30 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 a BT30 ER25 collet chuck need?
An M12 BT30 pull stud: MAS-BT with the head angle your drawbar takes (45° or 60°).
Which nut and collets fit a BT30 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).