PMK Belt Screw Bearing Cartridges – Type DB are precision dual-bearing support cartridges designed for high-rigidity, back-to-back (DB) bearing configurations in spindle and screw-driven assemblies.

These units provide exceptional axial and radial stiffness while maintaining smooth, low-friction operation. Each cartridge is preloaded, factory-assembled, greased, and sealed for maintenance-free reliability. The compact design allows simple installation in precision machine tools, automation systems, and rotary actuators requiring accurate axial load control.

Key Benefits

• Performance: back-to-back (DB) bearing configuration ensures high axial stiffness and load-carrying capability.
• Precision: factory-matched bearing pairs maintain consistent preload and minimal axial displacement.
• Durability: precision-ground raceways and robust steel housings deliver long operational life under continuous duty.
• Ease of Integration: compact, sealed cartridge design simplifies assembly and alignment in machine frames.
• Reliability: greased and sealed for extended maintenance-free performance.

Applications

• Spindle-end and ball screw support systems in CNC machines.
• Rotary and linear motion mechanisms in precision automation.
• Tooling systems, feed drives, and indexing actuators.
• OEM and retrofit spindle support cartridge replacements.