71944 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71944 CDGC/P4A Bearing Product Overview & Core Advantages
The 71944 CDGC/P4A is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its 15° contact angle is optimized to support significant combined loads (radial and axial), making it an ideal choice for high-speed spindles and precision machinery. The universal matching (SU) capability allows for flexible mounting arrangements in multi-bearing sets, while the phenolic cage ensures reliable performance at high rotational speeds.
71944 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71944 | Basic bearing series and size designation | Defines the core dimensions: 220mm bore, 300mm OD, 38mm width |
| CD | Contact angle designation (15°) | Optimized for combined load capacity and high-speed operation |
| GC | Internal clearance group | Provides optimal preload characteristics for precision applications |
| P4A | Tolerance class (ABEC 7/ISO P4) | Guarantees exceptional dimensional and running accuracy for precision machinery |
71944 CDGC/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
Superior Load Capacity: With a dynamic load rating of 49,725 lbf and static load rating of 67,500 lbf, this bearing delivers reliable performance under significant combined radial and axial loads.
High-Speed Capability: The phenolic resin cage and optimized internal design enable a limiting speed of 7,500 rpm, making it suitable for high-speed spindle applications.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be arranged in sets of up to 4 bearings with predetermined preload, providing exceptional system rigidity and accuracy.
Premium Material Selection: Constructed from chrome steel for both rings and balls, ensuring high durability and long service life in demanding applications.
71944 CDGC/P4A Bearing Typical Application Areas
The 71944 CDGC/P4A is specifically engineered for high-precision applications including:
- Machine Tool Spindles - High-speed milling and grinding spindles requiring exceptional accuracy
- Precision Gearboxes - Industrial transmission systems demanding high rigidity and speed capability
- Robotic Systems - High-precision robotic joints and positioning systems
- Aerospace Components - Critical rotating assemblies requiring P4A precision levels
- Medical Equipment - High-speed dental handpieces and surgical tool spindles
