Wholesale Thrust Ball Bearing Manufacturer and Supplier
Shanghai Yinin Bearing & Transmission Company is a China-based Wholesale Thrust Ball Bearing manufacturer and supplier with over 20 years of experience in the bearing industry. Since 1999, we have evolved from representing domestic bearing brands into an integrated group that designs, produces, and exports bearings globally. Our thrust ball bearing range covers the 51100, 51200, 51300, and 51400 series, manufactured in chrome steel and stainless steel, and is engineered for applications that demand reliable axial load support.
Our factory in Jiangsu Province operates with modern equipment and precision measuring tools, supported by a dedicated QC team. We supply bearings to industries including automotive, agriculture, automation, medical devices, and construction, with a focus on consistent quality and dependable delivery for wholesale orders.
Product Range and Series Overview
Our thrust ball bearings are designed to handle pure axial loads in one direction. They consist of a shaft washer, housing washer, and ball and cage assembly, available in single-direction configurations. We offer four main series to cover a wide range of bore sizes and load capacities.
| Series |
Bore Range (Typical) |
Application Fit |
| 51100 |
10–60 mm |
Light axial loads in machine tools, automotive accessories, and small gearboxes. |
| 51200 |
10–90 mm |
Medium axial loads in cranes, hoists, and agricultural machinery. |
| 51300 |
15–140 mm |
Higher axial loads in heavy industrial equipment and rotary tables. |
| 51400 |
15–200 mm |
Very high axial loads in presses, marine gearboxes, and large valves. |
Each series is available in standard and stainless steel variants. Stainless steel thrust ball bearings are suited for corrosive environments, such as food processing and chemical dosing equipment, where chrome steel would be unsuitable.
Application Fit and Engineering Considerations
Thrust ball bearings are not designed to handle radial loads. They must be used in applications where the load is purely axial and acts in one direction. Common applications include:
- Machine tool spindles – for axial positioning in vertical or horizontal spindles.
- Automotive steering and transmission – for thrust loads in gearboxes and steering columns.
- Material handling equipment – for crane hooks and hoist mechanisms.
- Agricultural machinery – for PTO shafts and implement adjustment mechanisms.
- Industrial valves and pumps – for stem thrust support.
When selecting a thrust ball bearing, the key parameters are bore size, outside diameter, height, and dynamic/static load ratings. Our technical team can help you match the correct series based on your shaft diameter and the magnitude of the axial load. We also consider operating speed, lubrication method, and mounting arrangement to ensure reliable performance.
Materials and Manufacturing Quality
We manufacture thrust ball bearings from high-carbon chrome steel (GCr15) or stainless steel (AISI 440C equivalent), depending on the application. The steel is sourced from certified mills and undergoes incoming inspection before production. Our manufacturing process includes:
- Precision machining of washers to achieve raceway geometry and surface finish.
- Heat treatment for hardness and wear resistance, followed by grinding and honing.
- Ball selection and assembly with pressed steel or brass cages, depending on the series and speed requirements.
- Final inspection and testing for dimensional accuracy, radial runout, and noise.
We perform in-process inspections after each stage and conduct final inspections according to customer requirements and international standards. Our QC center is equipped with precision measuring instruments to verify critical dimensions and tolerances.
Configuration Options and Customization
While we offer standard series, we also support customization for non-standard thrust ball bearings. This includes:
- Material changes – stainless steel for corrosion resistance or through-hardened steel for higher load capacity.
- Cage materials – brass for higher temperature and speed, or polyamide for quieter operation.
- Dimensions – non-standard bore or outside diameters for special housings.
- Precision grades – P0, P6, or P5 according to ISO tolerance classes.
For custom projects, we need the working drawing or detailed specifications, including load, speed, and mounting envelope. Our engineers will review the design and propose a solution that meets your performance and cost targets.
Quality Assurance and Testing
Quality is the foundation of our production. We adhere to a strict QC system that covers incoming material, in-process checks, and final product testing. For thrust ball bearings, we test:
- Dimensional accuracy of bore, outside diameter, and height.
- Axial runout and parallelism of washers.
- Rotational smoothness and noise level.
- Hardness and material composition verification.
We can provide inspection reports and certificates upon request. For wholesale orders, we can arrange third-party inspection if required by your quality assurance team.
Packaging, Delivery, and Export Support
We package thrust ball bearings in rust-preventive oil, wrapped in plastic film, and packed in export-grade cartons or wooden crates, depending on the order size. Our warehouse in Jiangsu ensures efficient handling of bulk orders. We export to the United States, European countries, Asia, and other regions, with experience in international logistics and documentation.
For in-stock items, we can ship within 3 working days. For production orders, lead time depends on the series and quantity. We provide tracking information and coordinate with your freight forwarder or arrange shipping on your behalf.
Information We Use to Configure Your Solution
To prepare an accurate quotation and technical proposal, we need the following information from you:
| Parameter |
Why It Matters |
| Bearing series or dimensions |
Identifies the correct size and load capacity. |
| Axial load (dynamic/static) |
Determines the required series and material. |
| Operating speed (RPM) |
Influences cage selection and lubrication. |
| Operating temperature |
Affects material and cage choice. |
| Environmental conditions |
Corrosion, moisture, or contamination may require stainless steel or seals. |
| Quantity and packaging |
Affects pricing and delivery schedule. |
Send us your inquiry with these details, and we will respond within 12 hours on working days with a tailored solution.
Frequently Asked Questions
What is the difference between 51100 and 51200 series thrust ball bearings?
The 51100 series is designed for lighter axial loads and smaller shaft diameters, while the 51200 series offers higher load capacity for medium-duty applications. The choice depends on the required bore size and the magnitude of the axial force.
Can you supply stainless steel thrust ball bearings?
Yes, we manufacture thrust ball bearings in stainless steel for applications requiring corrosion resistance. These are commonly used in food processing, pharmaceutical, and marine environments.
What is the minimum order quantity for wholesale thrust ball bearings?
Our minimum order quantity is 100 sets for standard sizes. For non-standard or custom bearings, the MOQ may vary based on the complexity and production requirements.
Do you provide test reports or certificates for your bearings?
Yes, we can provide material certificates, inspection reports, and other documentation upon request. For large orders, third-party inspection can be arranged.
How do I select the right thrust ball bearing for my application?
Provide us with the shaft diameter, axial load, speed, and operating conditions. Our technical team will recommend the appropriate series and configuration, ensuring optimal performance and service life.
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