BT51140 Thrust Ball Bearing
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Request Quote| Part Number | BT51140 |
| Category | Inch Single Direction Thrust Ball Bearing |
| Brand | JMP® |
| Interchangeable With | INA, NTN, HRB |
| Bore Diameter | 7.8740 in |
| Outer Diameter | 9.8425 in |
| Width | 1.4567 in |
| Chamfer Dimension | 0.30 mm |
| Dynamic Thrust Load | 51931.0 |
| Static Thrust Load | 136909.0 |
| 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) | — |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 8.8200 g |
Drawing not available — Request specs
| Brand | Equivalent |
|---|---|
| INA | BT51140 |
| NTN | BT51140 |
| HRB | BT51140 |
The BT51140 is a high-quality Thrust Ball Bearing with bore diameter of 7.8740 mm, outer diameter of 9.8425 mm, and width of 1.4567 mm.
With a dynamic radial load rating of 51,931 lbf and static load rating of 136,909 lbf, the BT51140 is engineered to handle demanding operating conditions.
- High load-carrying capacity (51,931 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 BT51140 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 BT51140 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 BT51140 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 BT51140 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.
