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Manufacturer number:
ER collet chuck Form AD BT 30 A = 70 40
Article no.: 302750 40
Article code:
- Arbor standard: JIS B6339; ISO 7388-2
- Shape: AD
- Balance quality G at rotational speed: G 6.3 at 20,000 rpm
- Concentricity: ≤ 3
- Machining strategy: HSC
Product details
Technical Data
| for ER collets | 40 | |
| Clamping ⌀ D1 | 3-26 mm | |
| Adapter | BT 30 A = 70 | |
| Arbor standard | JIS B6339; ISO 7388-2 | |
| Shape | AD | |
| Balance quality G at rotational speed | G 6.3 at 20,000 rpm | |
| Concentricity | ≤ 3 µm | |
| Machining strategy | HSC | |
| Clamping range | 3 mm - 26 mm | |
| Overhang dimension A | 70 mm | |
| External ⌀ D | 63 mm | |
| Spare ER clamping nut | 40 | |
| ER chuck key | 40 | |
| Type of product | Collet chuck |
Identification numbers & Classifications
| Article number | 302750 40 | |
| EAN / GTIN | 4250122698029 | |
| Manufacturer number | H.305.02.26.70 |
Description
Version:
External and internal taper ground.
All shanks burnished.
All shanks burnished.
Application:
For clamping tools with parallel shank in collets to DIN 6499 Form A and B.
Supplied with:
ER clamping nut.
Optional extras:
ER collets No. 308881 − 309434, ER chuck keys No. 309680 – 309745 or No. 613300.
Pull studs (PS) No. 308760 − 308802. Pull stud wrenches No. 308820; 308835.
Pull studs (PS) No. 308760 − 308802. Pull stud wrenches No. 308820; 308835.
Note:
Downloads & documents
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| Overhang dimension A | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| External ⌀ D | 63 mm | 63 mm | 63 mm | 63 mm | 63 mm |
| Concentricity | ≤ 3 µm | ≤ 3 µm | ≤ 3 µm | ≤ 3 µm | ≤ 3 µm |
| Clamping range | 3 mm - 26 mm | 3 mm - 26 mm | 3 mm - 26 mm | 3 mm - 26 mm | 3 mm - 26 mm |
| Balance quality G at rotational speed | G 6.3 at 20,000 rpm | G 2.5 at 25,000 rpm | G 2.5 at 25,000 rpm | G 2.5 at 25,000 rpm | G 2.5 at 25,000 rpm |
| Machining strategy | HSC | HSC | HSC | HSC | HSC |
| Type of product | Collet chuck | Collet chuck | Collet chuck | Collet chuck | Collet chuck |