71907 CD/P4ADT
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71907 CD/P4ADT Bearing Product Overview & Core Advantages
The 71907 CD/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to P4A tolerance class, ensuring superior running accuracy and minimal vibration. Its primary advantage lies in its ability to handle high axial loads in one direction while maintaining high-speed capabilities, making it an ideal solution for high-precision spindles and other critical machinery components where uncompromising performance is required.
71907 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing designation (35mm bore, 55mm OD, 20mm width) |
| C | 15° contact angle |
| D | High rigidity design |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DT | Duplex Tandem arrangement for maximum axial load capacity in one direction |
71907 CD/P4ADT Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The 15° contact angle is engineered to efficiently support high axial loads while maintaining excellent high-speed performance. The phenolic resin cage ensures smooth operation at high rotational speeds, contributing to the bearing's limiting speed of 56,000 rpm.
Enhanced Rigidity & Load Capacity: The duplex tandem (DT) arrangement provides exceptional system rigidity and significantly increased axial load capacity in one direction. This preloaded configuration eliminates internal clearance, resulting in precise shaft positioning and reduced vibration.
Precision Manufacturing: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, outside diameter, and width, this bearing delivers consistent, high-precision performance essential for applications requiring minimal runout and high rotational accuracy.
Material Excellence: Constructed from chrome steel for both rings and balls, the bearing offers high durability and wear resistance, ensuring long service life even under demanding operating conditions within the specified temperature range of -30°C to 110°C.
71907 CD/P4ADT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- Precision Rotary Systems: Measuring instruments, optical scanners, and coordinate measuring machines
- High-Speed Motors: Spindle motors, high-frequency motors, and precision servomotors
- Aerospace Components: Gyroscopes, navigation systems, and auxiliary power units
- Medical Equipment: Dental handpieces, laboratory centrifuges, and imaging device rotors
