1305J
1300 Series Self Aligning Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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1305J Bearing Product Overview & Core Advantages
The 1305J is a metric double row angular contact ball bearing designed for exceptional performance in demanding applications. This precision bearing is engineered to accommodate combined loads—simultaneously handling significant radial forces and moderate axial loads in both directions. Its compact bearing dimensions (25mm bore, 62mm OD, 17mm width) and robust double-row construction deliver high rigidity and stable rotational accuracy, making it ideal for high-reliability machinery where space is at a premium.
1305J Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1305 | Standard bearing series designation, indicating the basic size (25mm bore, 62mm OD). |
| J | Signifies a specific internal design and radial internal clearance of CN (Normal Group), optimized for common operating conditions. |
| Open (Seal Type) | The bearing is supplied without seals or shields, allowing for higher limiting speeds and is typically intended for applications where external sealing is provided or where re-lubrication is part of the maintenance schedule. |
| Lubricated | The bearing is pre-lubricated with grease, ensuring immediate operational readiness and initial protection against wear. |
1305J Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball complement and steep contact angle provide superior high rigidity, effectively resisting moment loads. This design enables the bearing to support substantial radial dynamic load ratings of 4275 lbf and handle combined loads with high operational stability.
Optimized for High-Speed Operation: Featuring a pressed steel cage, the 1305J is capable of achieving a limiting speed of 15,000 rpm. The open design and optimized internal geometry minimize friction and heat generation, which is critical for high-speed bearing applications.
Precision & Material Integrity: Manufactured from high-grade chrome steel for both rings and balls, the bearing ensures consistent performance, high durability, and a long service life. The standard CN radial internal clearance is suited for a wide range of operating conditions.
1305J Bearing Typical Application Areas
The 1305J double row angular contact ball bearing is ideally suited for a variety of industrial applications requiring robust performance and precision, including:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- General machinery spindles requiring support for combined loads
