HSD AT 120 Spindle Repair & Industrial ATC Rebuild Services
Overview
The AT 120 is a larger-frame AT spindle designed for high-duty production environments.
Common in:
- Cabinet manufacturing lines
- Panel processing systems
- Multi-shift CNC operations
Official Technical Specifications HSD_Cat_Composite_mar24_Web_ENG…
- Body Diameter: 120 mm
- Max Speed: 18,000–24,000 rpm (depends on configuration)
- Taper: ISO30 / HSK63
- Cooling: Liquid (commonly)
High-Duty Failure Patterns
- Clamp system fatigue
- Bearing degradation
- Cooling restriction
- Thermal growth under sustained load
Rebuild Process
- Complete teardown
- Heavy-duty bearing replacement
- Drawbar rebuild
- Belleville stack replacement
- Clamp force measurement
- Cooling validation
- Dynamic balance + thermal test