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integral keyless drill chuck with BT,DIN69871 standard:
They are mainly used for heavy duty and high speed drilling.
1.This integrated design can prevent drill chuck separate accidently with arbor.
2.High precision,big grip force,high Reliability.
3.Flimsy parts are shaped by quenching.
4.Self-tighting feature automatically increase gripping proportional to incrased torque to prevent tool shank sliping.

| model | L1 | L | L2 | D | d1 | d2 | R |
| BT30xAPU8-80 | 80 | 137.4 | 55 | 46 | 37 | 6 | 0.04 |
| BT30xAPU13-110 | 110 | 170.4 | 75 | 46 | 50 | 13 | 0.04 |
| BT30xAPU16-110 | 110 | 180.4 | 80 | 46 | 57 | 16 | 0.04 |
| BT40xAPU8-85 | 85 | 159.4 | 55 | 63 | 37 | 6 | 0.04 |
| BT40xAPU13-100 | 100 | 177.4 | 75 | 63 | 50 | 13 | 0.04 |
| BT40xAPU16-105 | 105 | 187.4 | 80 | 63 | 57 | 16 | 0.04 |
| BT50xAPU8-90 | 90 | 200.8 | 55 | 63 | 37 | 6 | 0.04 |
| BT50xAPU13-110 | 110 | 213.8 | 75 | 100 | 50 | 13 | 0.04 |
| BT50xAPU16-105 | 105 | 223.8 | 80 | 100 | 57 | 16 | 0.04 |
| Model No. | L1 | L | L2 | D | d1 | d2 | R |
| DIN69871.30xAPU8-80 | 80 | 139.8 | 55 | 50 | 37 | 6 | 0.04 |
| DIN69871.30xAPU13-120 | 120 | 179.8 | 75 | 50 | 50 | 13 | 0.04 |
| DIN69871.30xAPU16-125 | 125 | 179.8 | 75 | 50 | 57 | 16 | 0.04 |
| DIN69871.40xAPU8-75 | 75 | 155.4 | 55 | 63.55 | 37 | 6 | 0.04 |
| DIN69871.40xAPU13-100 | 100 | 180.4 | 75 | 63.55 | 50 | 13 | 0.04 |
| DIN69871.40xAPU16-115 | 115 | 195.4 | 80 | 63.55 | 57 | 16 | 0.04 |
| DIN69871.50xAPU8-75 | 75 | 188.75 | 55 | 63.55 | 37 | 6 | 0.04 |
| DIN69871.50xAPU13-100 | 100 | 213.75 | 75 | 97.50 | 50 | 13 | 0.04 |
| DIN69871.50xAPU16-105 | 105 | 218.75 | 80 | 97.50 | 57 | 16 | 0.04 |

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