71944 CD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71944 CD/P4A Bearing Product Overview & Core Advantages
The 71944 CD/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to accommodate combined loads (radial and axial loads in one direction), this bearing features P4 (ABEC-7) precision tolerance and is preloaded for optimal performance. Its phenolic cage and optimized internal geometry contribute to superior high-speed capabilities, making it ideal for demanding machinery where precision and reliability are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71944 | Basic bearing series and size designation |
| CD | Specific internal design with optimized contact angle and preload for high rigidity |
| P4A | P4 precision tolerance (equivalent to ABEC-7) with specific dimensional and running accuracy requirements |
71944 CD/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The 15° contact angle and preload configuration provide exceptional stiffness and minimize deflection under load, ensuring precise shaft positioning and reduced vibration.
Optimized Speed Performance: The phenolic cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's limiting speed of 6,300 rpm.
Superior Load Capacity: With a dynamic load rating of 49,725 lbf and static load rating of 67,500 lbf, this bearing reliably handles significant combined loads in demanding applications.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional controls (bore tolerance: -0.012mm to 0), ensuring consistent high-performance operation.
71944 CD/P4A Bearing Typical Application Areas
- Machine tool spindles and high-precision machining centers
- High-speed spindles for grinding and milling applications
- Precision industrial pumps and compressors
- Aerospace positioning systems and navigation equipment
- Medical imaging devices and scientific instruments
- Robotic arm joints and precision automation equipment
