SF4-9 Thrust Ball Bearing
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Request Quote| Part Number | SF4-9 |
| Category | Miniature Thrust Bearings |
| Brand | JMP® |
| Interchangeable With | INA, NTN, HRB |
| Bore Diameter | 4.0000 mm |
| Outer Diameter | 9.0000 mm |
| Width | 4.0000 mm |
| Bore Tolerance | -0.008mm to 0 |
| Outer Tolerance | -0.008mm to 0 |
| Chamfer Dimension | 0.30 mm |
| Dynamic Thrust Load | 720.0 |
| Static Thrust Load | 468.0 |
| Seal Type | Open |
| Bearing Type | Ball |
| Load Direction | Thrust |
| System of Measurement | Metric |
| Housing Washer ID | 4.2 mm |
| Shaft Washer OD | 8.8 mm |
| Ball / Roller Material | 440C Stainless Steel |
| Cage Material | Bronze |
| Ball Diameter | 1.588 |
| Ball Quantity | 6 |
| Temperature Range | -30° to 110 °C |
| Max Temperature | 110 °C |
| Reference Speed | 7,200 rpm |
| Limiting Speed (Grease) | 7,000 rpm |
| Limiting Speed (Oil) | 7,200 rpm |
| Bore Tolerance | -0.008mm to 0 |
| Outer Ring Tolerance | -0.008mm to 0 |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 1.5000 g |
| Brand | Equivalent |
|---|---|
| INA | SF4-9 |
| NTN | SF4-9 |
| HRB | SF4-9 |
The SF4-9 is a high-quality Thrust Ball Bearing with bore diameter of 4.0000 mm, outer diameter of 9.0000 mm, and width of 4.0000 mm.
With a dynamic radial load rating of 720 lbf and static load rating of 468 lbf, the SF4-9 is engineered to handle demanding operating conditions. It supports speeds up to 7,000 rpm, making it suitable for high-speed applications.
- Reliable load capacity for general industrial applications
- 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 SF4-9 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 SF4-9 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 SF4-9 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 SF4-9 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.
