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Super precision bearings manufactured to the MM/MMV tolerance class operate with running accuracy and performance levels meeting ABEC 9/ISO P2 levels, yet maintain non-critical features at ABEC 7/ISO P4 levels for cost effectiveness.
Timken® Fafnir® super precision ball bearings are designed to meet demanding machine tool requirements for high speeds, accuracy, rigidity and maximum machine uptime. Special raceway finishes and ball bearing designs achieve the highest possible operating speeds.
Size Range:
10 mm - 300 mm (0.3937 in. - 11.8110 in.) bore
Design Attributes:
- Designed to meet ABEC 9/ISO P2 running accuracy specifications.
- Non-critical design features at ABEC 7/ISO P4 levels are integrated for cost effectiveness
- Features 15- or 25-degree contact angles for different combinations of radial and axial loads.
- WI design is available for higher capacity at moderate to high speeds.
- Micro-coded bore and O.D. surfaces help machine builders achieve optimum fitting of crucial spindle components.
Applications:
- High-speed grinding spindles
- High-speed boring and milling spindles
- High-speed routing
- Precision vertical and horizontal milling spindles
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