1308 Double Row Ball Bearing
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Request Quote| Part Number | 1308 |
| Category | Self Aligning Ball Bearings |
| Brand | JMP® |
| Interchangeable With | SKF |
| Bore Diameter | 40.0000 mm |
| Outer Diameter | 90.0000 mm |
| Width | 23.0000 mm |
| Bore Tolerance | -0.012mm to 0 |
| Outer Tolerance | -0.015mm to 0 |
| Width Tolerance | -0.12mm to 0 |
| Chamfer Dimension | 1.10 mm |
| Dynamic Radial Load | 7,605 lbf |
| Static Radial Load | 2,520 lbf |
| Construction | Double Row |
| Seal Type | Open |
| Load Direction | Radial |
| Ring Material | Chrome Steel |
| Ball / Roller Material | Chrome Steel |
| Cage Material | Nylon |
| Limiting Speed (Grease) | 9,500 rpm |
| Limiting Speed (Oil) | — |
| Radial Clearance | CN |
| Bore Tolerance | -0.012mm to 0 |
| Outer Ring Tolerance | -0.015mm to 0 |
| Width Tolerance | -0.12mm to 0 |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 0.6800 g |
Drawing not available — Request specs
| Brand | Equivalent |
|---|---|
| SKF | 1308 |
The 1308 is a high-quality Double Row Ball Bearing with bore diameter of 40.0000 mm, outer diameter of 90.0000 mm, and width of 23.0000 mm. This double row design provides enhanced load capacity and rigidity.
With a dynamic radial load rating of 7,605 lbf and static load rating of 2,520 lbf, the 1308 is engineered to handle demanding operating conditions. It supports speeds up to 9,500 rpm, making it suitable for high-speed applications.
- High load-carrying capacity (7,605 lbf dynamic) for extended service life
- High-speed capability up to 9,500 rpm for versatile operation
- Open design for easy relubrication and low friction operation
- Double row construction for enhanced rigidity and load distribution
- Fully interchangeable with major international brands (SKF, NSK, FAG, NTN)
The 1308 is available in Open (no seal), ZZ (metal shield), and 2RS (rubber seal) configurations. Open bearings offer higher speed ratings and lower friction, while sealed versions provide better contamination protection and reduced maintenance requirements.
JMP Bearings manufactures the 1308 in various tolerance classes including ABEC-1 (standard), ABEC-3, ABEC-5 (precision), and ABEC-7 (high precision). Please contact us for specific tolerance class availability and pricing.
The 1308 typically uses lithium-based grease (e.g., ISO VG 68) for general applications. For high-temperature or high-speed applications, synthetic greases such as polyurea-based lubricants are recommended. Contact our engineering team for application-specific lubrication guidance.
JMP Bearings offers flexible ordering - sample quantities are available from 1 piece. For bulk orders, we provide tiered pricing starting at 100, 500, and 1000+ pieces. Contact us for a custom quote tailored to your volume.
For standard 1308 applications, shaft tolerance is typically k5 or j6, and housing tolerance is typically H7 or J6. Exact tolerance selections depend on load conditions, speed, and operating temperature. Refer to ISO 286 or consult our engineering support for detailed recommendations.
