HER Collet Chuck
HER collet Chuck
The power of trapezoidal threads
With high rigidity 200Nm super clamping torque and ≤5μm runout high precision characteristics, the HER collet chuck is a high-efficiency tool holder that can be used for heavy cutting and finishing. The clamping torque is 2.3 times larger than the general ER tool holder. The depth of cutting and feeding efficiency can be optimized.
Heavy cutting
High rigidity and high clamping force can optimize the depth of cutting and feeding efficiency
5µm high precision
Run Out≦0.005mm
Super clamping torque
High rigidity and high clamping force (230% higher than general ER), suitable for various rough/medium/finish processing
Reduce tool loss
Increase surface roughness and reduce tool loss
Long life
Protect spindle and extend equipment life
Compare the torque of the HER Series
The clamping force of HER25 is better than heat shrink, single-sided 4° flat shoulder collet and traditional general ER collet system. Take HER25 as an example: when the inner diameter is 12mm, the clamping force is about 145% larger than the 4° collet, about 130% larger than the general heat shrink, and about 230% larger than the general ER tool holder.
Perfect accuracy
The special structure of the double-length slideway [1] and the trapezoidal screw thread [2] can form the transformation force of penetration and reduce the friction. Therefore, when it’s locking, it can ensure that the nut has a perfect load in the center of the tool holder. There are advantages of high clamping force, high concentricity, and high repeat accuracy. At the same time, the short thread design also saves the time of assembling the tool holder.
Stability / advantages of three-point and two-sided clamping
Three-point and two-sided clamping: The clamping force is evenly distributed on the tool chuck diameter. The clamping force of the HER chuck series is evenly distributed on the A and B sides. Single-sided clamping: The clamping force is only distributed on the B side. It’s easy for the tool breaking inside the collet and damaging the entire set of tool holders and collets.
Durability
The steel balls are freely distributed and irregular. When they’re rotating at high speed, the imbalance will appear and there will be restrictions on change, resulting in poor accuracy. There will be gaps in the assembly of the nut, and chips will invade from this gap, causing damage to the nut. Or when it’s under continuous using, it will occur to cracking.
