Machine Tools & CNC
High-precision spindle bearings for superior machining accuracy
Application Overview
Machine tool spindles represent one of the most demanding bearing applications, requiring simultaneous high speed, high rigidity, low heat generation, and long service life. SKDIN angular contact bearings are specifically engineered for CNC machining centers, grinding machines, turning centers, and precision rotary tables, with optimized preload and lubrication for each application.
Key Engineering Challenges
- High-speed operation (up to 60,000 RPM for grinding)
- High rigidity for precision cutting forces
- Low thermal generation to maintain dimensional accuracy
- Consistent preload over full speed and temperature range
- Long service life under continuous production conditions
SKDIN Solutions
Precision Angular Contact Sets
Angular Contact BearingsABEC-7/P4 angular contact bearing sets with matched preload for high-speed machining center spindles.
Optimized Cage Design
Angular Contact BearingsPhenolic or PEEK cages for high-speed operation with minimal heat generation and centrifugal forces.
Oil-Air Lubrication Compatible
Angular Contact BearingsPrecision-ground bearings optimized for oil-air (mist) lubrication systems in high-speed spindles.
5-Axis Machining Center Spindle
Supplied ABEC-7 angular contact bearing set for a 40,000 RPM 5-axis machining center. Achieved 0.5μm radial runout and 8,000-hour service life in production.