S7005 CD/P4AQGD
Sealed Super Precision Angular Contact Ball Bearings
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S7005 CD/P4AQGD Bearing Product Overview & Core Advantages
The S7005 CD/P4AQGD is a high-precision double row angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. Engineered with P4A tolerance class and a heavy preload (Class D), this bearing delivers superior rotational precision and stability. Its double row design enables it to support substantial combined loads (radial and bidirectional axial loads) simultaneously, making it an ideal choice for compact, high-performance spindle arrangements. The phenolic cage and sealed construction contribute to reliable, long-lasting operation in precision machinery.
S7005 CD/P4AQGD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7005 | Double row angular contact ball bearing series with 25mm bore diameter |
| CD | Contact angle of 15° and heavy preload designation |
| P4A | High precision tolerance class with enhanced running accuracy |
| QGD | Universal matchable (SU) designation for pre-loaded bearing sets |
S7005 CD/P4AQGD Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact configuration provides exceptional stiffness, enabling stable operation under heavy combined loads. With a radial dynamic load rating of 5738 lbf and static rating of 4680 lbf, this bearing maintains precision under demanding conditions.
Precision Performance: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures minimal runout and vibration for high-accuracy applications.
Optimized High-Speed Operation: The phenolic cage material and 15° contact angle contribute to smooth operation at limiting speeds up to 83,000 rpm, while the sealed construction retains lubrication and protects against contamination.
Matched Set Compatibility: Designed as Universal Matchable (SU) bearings, these units can be supplied in pre-loaded sets of 4 bearings for immediate installation in precision spindle arrangements.
S7005 CD/P4AQGD Bearing Typical Application Areas
The S7005 CD/P4AQGD is ideally suited for high-precision applications requiring exceptional rigidity and accuracy, including:
- Machine Tool Spindles - High-speed machining centers and precision grinding spindles
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Automation - Robotics and precision positioning systems
- Medical Equipment - Dental handpieces and surgical tool spindles
- Aerospace Components - Guidance systems and precision actuators
