Spindle Technology – Series 820
Main features series 820
- Air-cooled HF motors
- Concentricity on the mounting taper < 0.002 mm
The 820 series motor spindles are air-cooled. A frequency converter is required to operate the spindle drive up to its maximum speed. The spindle shaft and motor shaft are made as a single piece in order to ensure the best possible vibration characteristics. To manufacture these spindles, we only use selected materials that guarantee a high degree of accuracy and reliability even under extreme conditions.
The technology of the 820 series
We only fit high precision preloaded bearings. These have excellent attenuation properties and wearing characteristics. Concentricity measured at the chuck is < 0.002 mm.
The anti-twist lock on the mounting taper allow our grinding spindles to be operated clockwise and CCW. This requires use of our original accessories. The collet version is suitable only for clockwise rotation.
Lifetime grease lubrication
It is driven by a liquid-cooled, variable induction motor.
A frequency converter is used to control the motor up to its maximum speed.
The tool side is sealed by a specifically proven labyrinth packing. This protects the spindle bearings against soiling.
Spindles can be installed either horizontally or vertically.
Operating instructions, operating tools
Standard mounting taper 1:7.5 with twist protection or collet