71934 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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71934 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71934 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back arrangement (DB) provides superior stability when subjected to combined radial and axial loads. Manufactured to P4A tolerance class and featuring a moderate preload (Class C), this bearing is engineered for high-performance machinery where precision, high rigidity, and reliable operation are critical.
71934 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71934 | Basic bearing designation indicating size series and 170 mm bore diameter |
| CD | Indicates a duplex bearing in a back-to-back (DB) arrangement |
| P4A | High precision tolerance class with enhanced running accuracy requirements |
| DBC | Specifies the moderate preload (Class C) applied to the matched set |
71934 CD/P4ADBC Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Stability: The back-to-back duplex arrangement creates a wide effective spread between load centers, significantly increasing system rigidity and moment load capacity. This configuration effectively counteracts overturning moments in demanding applications.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads from both directions. The radial dynamic load rating of 47,700 lbf and static load rating of 75,375 lbf ensure reliable performance under heavy operating conditions.
High-Speed Capability: The phenolic cage material provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling stable operation at the limiting speed of 16,250 rpm. This makes the bearing suitable for high-speed spindle applications.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, outside diameter, and width, this bearing delivers exceptional running accuracy and minimal vibration for precision machinery requirements.
71934 CD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles - High-precision milling, grinding, and turning centers
- Precision Gearboxes - Industrial transmissions requiring high rigidity and accuracy
- High-Speed Machining Centers - Applications demanding both speed and precision
- Industrial Pumps & Compressors - Equipment requiring reliable bearing performance under combined loads
- Robotics & Automation Systems - Precision positioning and motion control applications
