Super Precision High Speed P4A Precision Grade Angular Contact Ball Bearing Single Row Bearing
S71909 CB/P4A 45×68×12 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing - High Speed
Super-precision, high-speed B design, single row angular contact ball bearing with seals. The S71909 CB/P4A bearing features precise dimensions, high static load capacity, P4A precision grade, delivering superior performance and reliability for applications requiring high rotational accuracy and stability.
| Part Number | S71909 CB/P4A |
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Inner Bore Diameter (d) | 45 mm |
| Inner Bore Diameter Tolerance | -0.006mm to 0 |
| Outer Bore Diameter (D) | 68 mm |
| Outer Bore Diameter Tolerance | -0.007mm to 0 |
| Width (B) | 12 mm |
| Width Tolerance | -0.2mm to 0 |
| Contact Angle | 15° (25°, 40° Available) |
| Material | Chrome Steel |
| Cage Material | Phenolic |
| Number of Rows | 1 Single Row |
| Seal Type | Seal on both sides |
| Temperature Range | -30°C to 150°C |
| Lubrication | Grease |
| Tolerance Class | P4A better than P4 (ABEC-7) |
| Weight | 0.13 kg |
| Dynamic Radial Load | 7410 N |
| Static Radial Load | 5700 N |
| Reference Speed For Grease (r/min) | 28,000 rpm |
| Limiting Speed For Oil (r/min) | 43,000 rpm |
The S71909 CB/P4A angular contact ball bearing is engineered for high-precision and high-performance applications, featuring:
- Very tight tolerances suitable for precise machinery
- Ability to handle both radial and axial loads simultaneously
- High-speed operation with stability
- Low torque and friction for energy efficiency
- Enhanced rigidity for accuracy under heavy loads
- Durability with extended service life
- Effective performance across a wide temperature range
The S71909 CB/P4A bearing is a high-precision angular contact ball bearing widely applicable in various demanding industrial fields:
- Machine Tools and Spindles: Optimized for high-precision CNC spindles, handling high speeds and complex loads. Used in electric spindles for machining centers and grinders.
- Industrial Robots and Automation: Ideal for robotic joints and precision systems, offering high rigidity and low friction for accurate movement.
- Aerospace and Instruments: Supports high-speed stability in aircraft imaging and navigation systems. Suitable for lab equipment like centrifuges requiring low vibration.
- Energy and Heavy Machinery: Used in turbines, pumps, and hydraulic systems, even in tough environments. Applied in construction machinery like excavators and crushers.
- Other Industries: Ensures precision in plastic injection molding machines. Supports rollers in printing and packaging equipment like slitting and die-cutting machines.
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