| SKU | 202-7234-4 |
|---|---|
| Tool Holder Category | Collet Chuck |
| shank size | BT30 |
| projection length | 2.362 |
| max rpm balanced to | G2.5 20000 |
| TIR (inch) | 0.0002 |
| drawbar thread size | M12x1.75 |
| collet series | No |
|---|---|
| collet nut diameter | 0.787 |
SK vs ER Collet
- Seating deeper into the pocket and smaller overhand creates greater accuracy- High gripping torque due to 8 degree taper- SK collet is pushed into the pocket without twisting by a flat shoulder, thus force is perpendicular to the centerline of the tool holder for strong gripping- Rigid collet body is flush with nut to maintain rigidity- Shoulder Collet edge seats flush with the front surface of collet nut to maintain strong rigidity- Shoulder on the front of the collet prevents chip packing or stringy bird nests below the collet chuck nut of extend tooling life
More Gripping, More Accurate
8 Degree SK collet seats deeper in the pocket than 16 degree taper ER collet, providing twice more clamping force and twice more accuracy during high speed machining. Collet edge seats flush with the front surface of collet nut to maintain strong rigidity. Bearing nut reduces twisting of the collet and improve accuracy.
Product Spotlight
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- Runout tolerance on internal pocket face is guarantees within 3 micron/0.0001" and runout tolerance is guaranteed within 5 micron/0.0002" at 4xD position using 5 micron SK collet
- Dynamically balanced to 20,000RPM at G2.5 by Haimer balancing machine at all location for consistent balance
- Taper ground to AT3 or better accuracy standard for maximum contact with spindle. All of SHARS CAT/BT/HSK tool holder use Stotz Air/Electronic Gaging for production and finish inspection. Stotz has been chosen by major aircraft companies as the best and most consistent gaging for tool holder shanks
- Buttery smooth thread engagement between collet nut and tool holder
- All critical contact area on the tool holder are precision machined, like the nose end and the drawbar end
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- High speed collet nut to reduce friction
- Bearing nut reduces twisting of the collet and increase the TIR accuracy
- Narrow collet nut design allows more tool clearance to access tight spaces and hard to reach areas
- Needle bearing wrench sold separately
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