HER Collet Tool Holder-BTN

Deflection runout≦0.005mm (4 times length)
The full-circle nut can reduce wind resistance, improve stability and correspond to the center water
Collet collocation standard ER system, high versatility
Full range of bearing wrenches
Full range of dynamic balance

動平衡 Balancing

Max.30,000 RPM Or U<= 1gmm
Max.30,000 RPM Or U<= 1gmm


Comparison of size indication and detailed specifications

Order No.
Order number
Range ∅d
Clamping range
∅d1LL1Tool Clamping
Depth L2
Tool clamping depth
Screw adjustment screwCollet
BT30N HER16-0601.0~10.030603829~58 CAP-HER16 ER-M11 ER16-HPPHS-20-RO300
BT30N HER20-0601.0~13.032603832~65 CAP-HER20 ER-M14 ER20-HPPHS-20-RO320
BT30N HER25-0601.0~16.040603835~58 CAP-HER25 ER-M18 ER25-HPPHS-20-RO400


  • Requires 3µ HP Collet With 3µ HP Grade Collet
  • If you need a water outlet knife handle, please refer toSelection instructions
  • Collet clamping is a one-to-one integer value

Precision tool holder series products

Deep hole machining・3μm high precision・Reduce tool wear

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