Ball Bearings
Thrust Ball Bearings
The NU/NJ/NUP/N/NF/NP cylindrical roller bearings are engineered for high radial load capacity, low friction, and long-term operational reliability. With a compact structure and high rigidity, this bearing series maintains excellent running accuracy under high-speed or heavy-load conditions. By optimizing roller and raceway geometry and applying high-precision manufacturing processes, these bearings deliver higher efficiency, extended service life, and reduced maintenance requirements in industrial transmission systems.
Key Features
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High Radial Load Capacity
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Low Friction and High Operating Efficiency
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High Rigidity and Precision Performance
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Multiple Structural Types (NU / NJ / NUP / N / NF / NP)
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Long Service Life and Reduced Maintenance
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Wide Size Range and Customization Support
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Description
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Thrust Ball Bearings
Metric & Inch Sizes Custom Sizes Available
BOM Bearing manufactures and supplies thrust ball bearings across a wide range of sizes and configurations. Designed exclusively for axial loads, thrust ball bearings consist of separable, interchangeable components — shaft washer, housing washer, and ball-and-cage assembly — enabling straightforward mounting and field replacement. Available in single-direction, double-direction, and variants with spherical housing washer for angular misalignment compensation.
- Load Direction: Pure axial loads; single-direction and double-direction configurations
- Bore Diameter Range: 10 mm up to 200 mm and beyond; inch sizes available
- Separable Construction: Shaft washer, housing washer, and ball-cage assembly are fully interchangeable
- Misalignment Compensation: Spherical housing washer variants accommodate up to 2° static misalignment
- Operating Temperature: –30 °C to +120 °C standard; extended range with specialty lubricants
- Precision Grade: P0 (Normal), P6, P5, P4
Thrust Ball Bearings — Dimensions & Load Ratings
Boundary dimensions per ISO 104 | Load ratings per ISO 76 / ISO 281 | This is a partial list — contact us for sizes not shown
| Designation |
d mm |
D mm |
H mm |
Ca kN |
C0a kN |
Limiting Speed r/min (grease) |
|---|
Custom & Integrated Bearing Solutions
Integrated Assemblies Engineering Support
Beyond standard catalog sizes, BOM Bearing engineers thrust ball bearings to application-specific requirements — including integrated bearing assemblies where the bearing and its mating components are manufactured as a single unit. This eliminates assembly tolerances and produces a more compact, higher-performing component.
- Integrated Assemblies: Bearing and mating parts (shaft, housing, mounting features) manufactured as one unit — more compact structure, smaller envelope, higher load capacity
- Precision Advantage: One-piece machining eliminates assembly stack-up errors, delivering higher combined accuracy than separately assembled components
- Dimension Customization: Non-standard bore, OD, height, and inch dimensions outside catalog ranges
- Material & Surface Options: Stainless steel (440C), brass, special alloys; zinc phosphate, black oxide, nickel plating
- Cage & Precision Options: Pressed steel, machined brass, PA66, PEEK; precision grades P0 through P4
Applications
Machine Tool Spindles
Precise axial positioning for vertical and horizontal spindles under pure thrust loading.
Automotive Steering & Clutch Systems
Smooth axial load transfer in steering columns, clutch release bearings, and turntable applications.
Crane & Hoist Equipment
Heavy axial load support for lifting equipment, slewing rings, and vertical shaft applications.
Pumps & Valve Systems
Reliable thrust load management in vertical pumps, control valves, and hydraulic equipment.
About BOM Bearing
BOM Bearing is a professional manufacturer and supplier of high-quality thrust ball bearings, providing reliable axial load solutions for industrial applications worldwide.
- Quality Assurance: ISO 9001 certified manufacturing with strict quality control at every production stage
- Wide Size Range: Comprehensive selection of thrust ball bearings from miniature to large bore diameters
- Custom & Integrated Solutions: Application-specific bearing assemblies, special dimensions, and material options
- Technical Support: Professional engineering team for product selection, application analysis, and troubleshooting
- Fast Delivery: Efficient production lines and global logistics network ensuring timely delivery
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Frequently Asked Questions (FAQ)
What loads can thrust ball bearings carry?
Thrust ball bearings are designed exclusively for axial (thrust) loads. They must not be subjected to radial loads. For applications with combined radial and axial loads, angular contact ball bearings or tapered roller bearings are the appropriate choice.
What is the difference between single-direction and double-direction thrust ball bearings?
Single-direction types consist of two washers and one ball-and-cage assembly, carrying axial load in one direction only. Double-direction types use three washers and two ball-and-cage assemblies, carrying axial loads in both directions simultaneously.
What is a spherical housing washer variant?
Some thrust ball bearings include a spherical-shaped housing washer that compensates for static angular misalignment up to 2° between the shaft and housing. This simplifies installation where precise alignment is difficult to achieve, without reducing bearing service life.
What is an integrated bearing assembly?
An integrated bearing assembly combines the bearing with its mating components (such as shaft, housing, or mounting features) into a single manufactured unit. This produces a more compact structure with higher load capacity, and eliminates assembly stack-up errors for superior combined accuracy compared to separately assembled parts.
Can BOM supply non-standard sizes or custom thrust ball bearings?
Yes. BOM Bearing engineers custom thrust ball bearings with non-standard dimensions, special washer and cage materials, elevated precision grades, surface treatments, and integrated bearing assemblies designed for specific applications. Contact our engineering team with your requirements.
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