
BT-KUP
KEYLESS DRILL CHUCK-BT
A drill chuck holder is a device used to clamp drill bits, widely applied in drilling machines, milling machines, and CNC machining centers.
The three-jaw structure aligns and secures the drill bit, enabling stable drilling operations.
The three-jaw structure aligns and secures the drill bit, enabling stable drilling operations.
Reduced eccentricity and runout during machining improve hole position accuracy.
Dimensions
Comparison of size indication and detailed specifications

Order No. Order number | Range ∅d Clamping range | ∅D | L | L1 |
---|---|---|---|---|
BT30(BTT30) KUP08-080 | 0.3~8 | 38 | 80 | 58 |
BT30(BTT30) KUP13-110 | 1~13 | 50 | 110 | 88 |
Order No. Order number | Range ∅d Clamping range | ∅D | L | L1 |
---|---|---|---|---|
BT40(BTT40) KUP08-085 | 0.3~8 | 38 | 85 | 58 |
BT40(BTT40) KUP13-100 | 1~13 | 50 | 100 | 73 |
BT40(BTT40) KUP13-130 | 1~13 | 50 | 130 | 103 |
BT40(BTT40) KUP16-130 | 3~16 | 58 | 130 | 103 |
Order No. Order number | Range ∅d Clamping range | ∅D | L | L1 |
---|---|---|---|---|
BT50(BTT50) KUP08-085 | 0.3~8 | 38 | 85 | 47 |
BT50(BTT50) KUP13-100 | 1~13 | 50 | 102 | 72 |
BT50(BTT50) KUP13-180 | 1~13 | 50 | 180 | 142 |
BT50(BTT50) KUP16-130 | 3~16 | 58 | 130 | 92 |
Precision Tool Holder Series Products
Deep hole machining・3μm high precision・Reduce tool loss
Shrink Fit Chuck
Shrink Fit Chuck

Quick tool change within 10 seconds・3μm high precision
Hydraulic Chuck
Hydraulic Chuck

Heavy cutting・5μm high precision・Super clamping torque
HER collet Chuck
Her Collet Chuck

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