Location:1. Mechanical Foundation of High-Precision Transmission
With a friction coefficient of 0.001-0.005, ball screws achieve 1/10 the resistance of sliding screws. For example:
C3 grade exhibits ≤±0.003mm positioning error over 300mm, with ±0.001mm repeatability;
Material selection: Suj2 bearing steel (HRC58-62) ensures Ra≤0.4μm raceway roughness;
Preload control: Dual-nut preloading (10%-15% dynamic load capacity) balances rigidity.
2. High Load-Bearing Mechanisms
SFU2505 models (25mm diameter) offer 15kN dynamic/28kN static loads, enabled by:
Load distribution: Three-row rollers separately handle axial/radial loads with line contact;
Dynamic rigidity: Planetary roller screws achieve 3-5× higher stiffness via preload-induced repulsion.
3. Maintenance Best Practices
Alignment: Parallelism to rails ≤0.02mm/m, fixed-fixed support for long strokes;
Lubrication: EP lithium grease with centralized systems extends intervals to 500h;
Monitoring: Vibration sensors detect early spalling; backlash threshold ≤0.001mm.
