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Cat. No.:
Self-centring lathe chuck with base and hard top jaws, DIN 702-4, Type: 250
Article no.: 452678
Catalog no.: 313120
Article code:
Product details
Technical Data
| Standard | DIN 702-4 | |
| 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 | |
| Chuck height D | 92 mm | |
| Centring ⌀ B | 235 mm | |
| Chuck key square socket K | 14 mm | |
| Weight | 34.5 kg | |
| maximum speed | 4,200 min-1 | |
| Colour code for accessories | Röhm self-centring chucks and jaws | |
| Type of product | Self-centring chucks |
Identification & Classification
| Article number | 452678 | |
| Catalog number | 313120 | |
| EAN / GTIN | 4019208227795 | |
| Manufacturer number | 437492 | |
| Manufacturer/responsible person | Röhm GmbH, Heinrich-Röhm-Straße 50, 89567 Sontheim/BRZ, Germany, www.roehm.biz |
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 machine spindles with recessed centring mount or for mounting using a flange. Secured with screws from the front. The flange blanks must always be fitted first to the machine and then to the chuck.
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).