71980 AM
Single Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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71980 AM Bearing Product Overview & Core Advantages
The 71980 AM is a high-precision single row angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. Characterized by its 30° contact angle and P6 (ABEC-3) tolerance class, this bearing is optimized to support combined loads, handling significant radial loads and unidirectional axial loads simultaneously. Its robust construction from chrome steel and a brass cage ensures high reliability and performance in high-speed and high-stress environments, making it an ideal choice for precision machinery where operational integrity is paramount.
71980 AM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71980 | Basic Bearing Series & Size Code | Indicates the bearing series with a 400 mm bore diameter, 540 mm outside diameter, and 65 mm width. |
| A | 30° Contact Angle | Optimized for high axial load capacity and high-speed performance. |
| M | Brass Cage | Provides superior strength, stability, and guidance at high rotational speeds, contributing to the bearing's limiting speed of 1,200 rpm. |
71980 AM Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The 30° contact angle and robust internal geometry enable the 71980 AM to efficiently support combined radial and axial loads, with a high dynamic load rating of 90,675 lbf and a static load rating of 165,375 lbf.
High-Speed Capability: The machined brass cage (M) ensures excellent ball guidance and low friction, which is critical for stable operation at the specified limiting speed. The open design allows for efficient lubrication management.
Precision and Rigidity: Manufactured to P6 tolerance class with strict dimensional controls on the bore, outside diameter, and width, this bearing guarantees precise shaft positioning and system high rigidity. The defined shoulder diameters ensure accurate axial location.
Durability and Compliance: Constructed from high-grade chrome steel for both rings and balls, the bearing offers long service life. It is also compliant with ROHS and REACH environmental standards.
71980 AM Bearing Typical Application Areas
The 71980 AM angular contact ball bearing is ideally suited for heavy-duty, high-precision applications, including:
- Machine Tool Spindles
- Industrial Gearboxes
- Large Pumps and Compressors
- Precision Turntables and Indexing Tables
- Material Handling Equipment
