140BT581 Thrust Ball Bearing
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Request Quote| Part Number | 140BT581 |
| Category | Inch Single Direction Thrust Ball Bearing |
| Brand | JMP® |
| Interchangeable With | INA, NTN, HRB |
| Bore Diameter | 14.0000 in |
| Outer Diameter | 17.5000 in |
| Width | 2.5000 in |
| Bore Tolerance | +0.01'' to +0.015'' |
| Outer Tolerance | -0.031'' to +0.031'' |
| Chamfer Dimension | 0.60 mm |
| Dynamic Thrust Load | 145901.0 |
| Static Thrust Load | 589899.0 |
| Bearing Type | Ball |
| Load Direction | Thrust |
| System of Measurement | Inch |
| Ball / Roller Material | Chrome Steel |
| Temperature Range | -30° to 110°C |
| Max Temperature | 110 |
| Limiting Speed (Grease) | — |
| Limiting Speed (Oil) | — |
| Bore Tolerance | +0.01'' to +0.015'' |
| Outer Ring Tolerance | -0.031'' to +0.031'' |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 41.8900 g |
Drawing not available — Request specs
| Brand | Equivalent |
|---|---|
| INA | 140BT581 |
| NTN | 140BT581 |
| HRB | 140BT581 |
The 140BT581 is a high-quality Thrust Ball Bearing with bore diameter of 14.0000 mm, outer diameter of 17.5000 mm, and width of 2.5000 mm.
With a dynamic radial load rating of 145,901 lbf and static load rating of 589,899 lbf, the 140BT581 is engineered to handle demanding operating conditions.
- High load-carrying capacity (145,901 lbf dynamic) for extended service life
- Optimized operating speed for stable performance
- Open design for easy relubrication and low friction operation
- Precision manufacturing to ISO standards ensures consistent quality
- Fully interchangeable with major international brands (SKF, NSK, FAG, NTN)
The 140BT581 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 140BT581 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 140BT581 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 140BT581 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.
