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Self-centring lathe chuck with one-piece reversible jaws 250/8
Article no.: 313130 250/8
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Product details
Technical Data
| Standard | DIN 702-3 | |
| Short taper arbor | 8 | |
| Type | 250 | |
| Clamping range with external hard top jaws | 8 mm - 253 mm | |
| Clamping range with internal hard top jaws | 99 mm - 261 mm | |
| Clamping stroke per jaw S | 8 mm | |
| External ⌀ A | 256 mm | |
| Aperture E | 62 mm | |
| Centring taper ⌀ B | 139.719 mm | |
| Number of studs | 4 | |
| Size of studs | M16 | |
| Chuck key square socket K | 14 mm | |
| Weight | 33 kg | |
| maximum speed | 4,200 min-1 | |
| Colour code for accessories | Röhm self-centring chucks and jaws | |
| Type of product | Self-centring chucks |
Identification numbers & Classifications
| Article number | 313130 250/8 | |
| Manufacturer number | 437510 |
Description
Version:
- Maximum concentricity and changeover accuracy.
- With jaw retention, centrically clamping.
- Large pass-through diameter.
- Accuracy twice that specified by DIN 6386.
- High clamping force with low force exertion.
- Higher speeds thanks to safety blocking slide.
- Jaws can quickly and easily be reversed or exchanged.
- Outer contour with drop-off wedge for water.
- Grease nipple for greasing all sliding faces.
Advantage:
Wherever extremely high clamping forces, high concentricity, and reliable continuous repeatability are required.
Application:
For spindle noses DIN 702-3. With studs and collar nuts. The chuck is always fitted to the spindle nose directly without an intermediate flange.
Material:
Entirely made of steel, fully surface-hardened.
Supplied with:
Includes: 1 set of jaws, 1 chuck key, 1 set fastening screws.
Note:
Bore E can be bored out: Size 160 to 45 mm, size 200 to 55 mm, size 250 to 75 mm, size 315 to 102 mm (at additional charge).