Product Specifications
| Parameter |
Details |
| Model NO. |
21320CA |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Clearance |
C0 C3 C4 |
| Service |
OEM ODM |
| Rolling Body |
Roller Bearings |
| The Number of Rows |
Double |
| Material |
Bearing Steel |
| Spherical |
Aligning Bearings |
| Load Direction |
Radial Bearing |
| Separated |
Unseparated |
| Outer Dimension |
50-2500 |
| Transport Package |
Carton Pallet |
| Specification |
100*215*47 mm |
| Trademark |
SKF/NTN/NSK/NMB/Koyo/NACHI/Timken |
| Origin |
China |
| HS Code |
8482300000 |
| Production Capacity |
1000000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Printing Presses, Reducers |
| Automotive |
Wheel Hubs, Transmission Systems |
| Agriculture |
Harvesters, Tractors |
| New Energy |
Wind Turbines, Photovoltaic Equipment |
| Construction |
Excavators, Heavy Load Machinery |
Prevent Costly Downtime with Reliable Self-Aligning Roller Bearings 21320CA for Industrial Machinery
Industrial machinery operators know the frustration of unexpected downtime caused by bearing failure. When a critical component like a Self-Aligning Roller Bearing fails prematurely, it disrupts production schedules, increases maintenance costs, and leads to missed deadlines. Many face challenges with sourcing bearings that offer both precision and durability, especially when dealing with non-standard requirements or tight lead times.
Self-Aligning Roller Bearings Engineered for Heavy Loads and Misalignment
Our Self-Aligning Roller Bearings, including models 21320CA, 21321CA W33, 21322CA, and 21324CA W33, are designed to address these pain points. With double rows of rollers and a spherical outer ring, they accommodate shaft misalignment up to 2 degrees, reducing stress on machinery components. Crafted from high-quality bearing steel, these bearings deliver reliable performance in industrial applications such as machine tools, reducers, and printing presses, where precision and load capacity are essential.
Optimal Performance in Demanding Industrial Environments
Self-Aligning Roller Bearings excel in environments with heavy radial loads and moderate axial loads, making them ideal for industrial machinery operating under varying conditions. The 21320CA W33 model, with dimensions 100*215*47 mm, provides the structural support needed for high-torque applications, while the W33 lubrication groove ensures efficient grease distribution for extended service life. Whether your equipment operates at high speeds or under continuous heavy loads, these bearings maintain stability and minimize wear, reducing the risk of unexpected failures.
Key Technical Features That Enhance Machinery Reliability
The performance of our Self-Aligning Roller Bearings is defined by critical technical parameters that directly impact machinery efficiency. Precision ratings from P0 to P4 ensure tight tolerances, reducing vibration and noise in high-speed applications. Clearance options (C0, C3, C4) allow customization based on operating temperature and load conditions—C3 and C4 clearances accommodate thermal expansion in high-temperature environments, while C0 suits standard operating conditions. The double-row roller design increases radial load capacity, making these bearings suitable for heavy-duty machinery like crushers and conveyors. Additionally, the unseparated structure simplifies installation and maintenance, ensuring quick replacement during scheduled downtime.
Long-Term Value: Authentic Bearings vs. Counterfeit Risks
Choosing genuine Self-Aligning Roller Bearings over counterfeit alternatives protects your investment in industrial machinery. Counterfeit bearings often fail prematurely due to substandard materials and poor manufacturing, leading to costly repairs and production losses. Our bearings, backed by ISO9001 and ISO14001 certifications, undergo rigorous quality control checks to ensure compliance with international standards. The 12-month global warranty provides peace of mind, covering manufacturing defects and ensuring prompt replacement if issues arise. While counterfeit bearings may offer lower upfront costs, the total cost of ownership—including downtime, repairs, and replacement—is significantly higher than investing in authentic, reliable components.
Why Industrial Buyers Choose Saifan Bearings
With over 18 years of experience as an integrated bearing manufacturer and exporter, Jinan Saifan Bearing has established a reputation for reliability in the global market. We serve buyers across Europe, America, Southeast Asia, and the Middle East, offering both OEM/ODM customization and authentic NSK/INA bearings. Our in-house R&D and QC lab ensure consistent quality, while flexible order options—including 1pc MOQ for standard items and 3–5 day sample lead times—cater to both small-scale repairs and large production runs. Technical guidance is available free of charge, helping customers select the right bearing for their specific application. We prioritize transparency, providing full traceability for every product and supporting our claims with verifiable certifications and customer testimonials.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- 3–5 day lead time for samples, 5–15 days for bulk deliveries
- Multiple logistics options including air, sea, and express (DHL, FedEx)
- Real-time tracking provided for all shipments
- 1pc minimum order quantity for standard Self-Aligning Roller Bearings
Get Your Industrial Machinery Back to Peak Performance
Don’t let bearing issues slow down your production. Whether you need a single 21322CA Bearing for emergency repairs or bulk orders of 21324CA W33 for new machinery, we have the inventory and expertise to meet your needs. Contact us today with your bearing型号, application details, and quantity, and our team will provide a competitive quote within 24 hours. The sooner you secure reliable bearings, the sooner your equipment can return to optimal performance.
Frequently Asked Questions
Q: Are these Self-Aligning Roller Bearings authentic?
A: Yes, we supply authentic bearings and are authorized to distribute NSK/INA products. Each bearing comes with traceability documentation to verify its origin and quality.
Q: How do I confirm if the 21320CA Bearing fits my machinery?
A: Provide your equipment model, operating conditions (load, speed, temperature), and required dimensions. Our technical team will verify compatibility and recommend the optimal bearing type.
Q: What is the warranty policy for these bearings?
A: We offer a 12-month global warranty covering manufacturing defects. If a bearing fails under normal operating conditions, we provide free replacement or refund.
Q: What is the minimum order quantity?
A: Standard items like the 21320CA W33 have a 1pc MO
Quality Assurance
100% Inspection
High-grade chrome steel, raw material QC, full-process monitoring, ISO/ABMA/DIN compliance.
Delivery
3-15 Days
Samples in 3-5 days, bulk orders 5-15 days. Free samples for distributors (freight collect).
Customization
Full OEM/ODM
P0-P4 precision grades, Z2-Z3-Z4 noise levels. Custom drawings welcome.
After-Sales
12-Month Warranty
Professional technical guidance and failure solutions from our R&D team.
