71807 ACD/P4TBTL
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71807 ACD/P4TBTL Bearing Product Overview & Core Advantages
The 71807 ACD/P4TBTL is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This bearing is supplied as a matched triplex set in a back-to-back (TBT) arrangement, providing superior stability and load-carrying capacity. With its P4 tolerance class and phenolic cage, it delivers outstanding rotational accuracy and is optimized for high-speed operation. The preloaded configuration ensures minimal axial and radial play, making it ideal for applications where precise shaft positioning is critical.
71807 ACD/P4TBTL Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71807 | Basic bearing series and size designation |
| ACD | Angular Contact Design with 25° contact angle |
| P4 | High precision tolerance class |
| TBT | Triplex Back-to-Back matched arrangement |
| L | Light preload |
71807 ACD/P4TBTL Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The triplex back-to-back arrangement creates a highly rigid bearing system that effectively resists moment loads and maintains precise shaft alignment under combined loading conditions.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, ensuring excellent wear resistance and durability. The phenolic cage provides superior strength-to-weight ratio and is ideal for high-speed applications.
Precision Performance: The P4 tolerance class guarantees extremely tight dimensional accuracy and running precision, while the 25° contact angle optimizes axial load capacity. With 26 balls of 3.175 mm diameter, the bearing achieves excellent load distribution.
Optimized Speed Capability: The phenolic cage and precision manufacturing enable a limiting speed of 56,000 rpm, making this bearing suitable for high-speed spindle applications.
71807 ACD/P4TBTL Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling applications
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory devices
- High-Speed Motors: Spindle motors, high-frequency motors, and precision drive systems
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
