Product Specifications
| Parameter |
Details |
| Model NO. |
21310CA |
| 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 |
| Specification |
50*110*27 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 Machinery, Reducers |
| Agricultural Machinery |
Harvesters, Tractors |
| Construction |
Excavators, Heavy Load Machinery |
| Manufacturing |
Conveyors, Gearboxes, Electric Motors |
Reduce Downtime with Reliable Self-Aligning Roller Bearings 21310CA-21314CA W33 for Industrial Machinery
Industrial machinery operators often face unexpected production halts due to bearing failures, especially in applications with misalignment or heavy radial loads. Sourcing authentic, precision-engineered bearings with flexible order options can be challenging, leading to extended downtime and increased maintenance costs. Many struggle with finding suppliers that balance quality, customization, and quick delivery for both standard and specialized bearing needs.
Self-Aligning Roller Bearings Engineered for Heavy-Duty Industrial Performance
Our Self-Aligning Roller Bearing series (21310CA, 21311CA W33, 21312CA, 21313CA W33, 21314CA) addresses these challenges with double-row radial design that accommodates shaft misalignment up to 2-3 degrees, reducing stress on machinery components. As an integrated manufacturer with ISO9001 and ISO14001 certifications, we ensure each bearing meets P0-P4 precision standards and Z2-Z4 noise grades, suitable for demanding industrial environments like machine tool spindles, printing presses, and conveyor systems. With 1pc MOQ for standard items and 3-5 day sample lead time, we support both emergency repairs and long-term production planning.
Optimal Performance in Demanding Industrial Conditions
These Double Row Radial Bearings excel in applications involving heavy radial loads and moderate axial loads, common in industrial machinery such as reducers, crushers, and agricultural equipment like tractors and harvesters. The self-aligning feature is critical for equipment where shaft deflection or mounting errors occur, ensuring consistent performance and extending bearing life. Constructed with high-grade bearing steel, they maintain stability under varying temperatures and operational stresses, making them a reliable choice for continuous-duty machinery.
Key Technical Features That Enhance Machinery Reliability
The precision rating options (P0-P4) allow customization based on application requirements—P4 for high-speed, low-vibration machinery like CNC spindles, and P0 for general industrial use. Clearance grades (C0, C3, C4) accommodate thermal expansion and mounting conditions; C3 and C4 are ideal for high-temperature environments or applications with heavy loads. The double-row roller design distributes load evenly, increasing dynamic load capacity and reducing wear. As unseparated bearings, they simplify installation and maintenance, minimizing downtime during replacements.
Why Authentic Bearings Lower Total Cost of Ownership
Choosing genuine Self-Aligning Roller Bearings over counterfeit alternatives reduces long-term costs by avoiding premature failures, which can cause secondary damage to shafts, housings, and other components. Our bearings undergo rigorous quality control in our in-house lab, ensuring compliance with international standards. Counterfeit bearings often lack proper material heat treatment, leading to early spalling or cage failure—costing far more in repair and lost production than the initial savings. We stand behind our products with a 12-month global warranty, including defect replacement and technical support, further protecting your investment.
Our Commitment to Reliable Bearing Supply
With over 18 years of experience manufacturing and exporting bearings to Europe, America, Southeast Asia, and the Middle East, we have built a reputation for stable supply and competitive pricing. Our full R&D capabilities and OEM/ODM services allow us to customize bearings to specific industrial requirements, from noise reduction to load capacity optimization. We maintain a large inventory of standard items, enabling 5-15 day bulk delivery, and offer free samples (buyer covers freight) for performance testing. Our quality management system ensures consistent production, with each bearing traceable through our supply chain.
Packaging & Shipping
- Carton and pallet packaging for secure transportation
- 3-5 day sample lead time for testing and validation
- 5-15 day bulk delivery for standard items from stock
- Multiple payment options: T/T, credit card, Alibaba trade assurance
- 1pc MOQ for standard bearings, supporting emergency repairs
Get Your Industrial Bearings Delivered Fast
Don’t let bearing issues slow down your production. Whether you need 21310CA, 21311CA W33, or other sizes in the series, send us your requirements today. Include the bearing model, quantity, and application details, and our technical team will confirm specifications and provide a quote within 24 hours. With our fast shipping and reliable quality, you can minimize downtime and keep your machinery running at peak efficiency.
Frequently Asked Questions
Q: Are these self-aligning roller bearings authentic?
A: Yes, we supply authentic bearings manufactured in our ISO9001/ISO14001 certified facility. For branded bearings (NSK/INA), we provide full traceability and authenticity documentation upon request.
Q: How do I confirm the right bearing size for my equipment?
A: Provide your equipment model, shaft diameter, housing bore, and load requirements. Our technical team will cross-reference specifications to ensure proper fit and performance.
Q: What is your warranty policy?
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 have a 1pc MOQ, ideal for emergency repairs or small-batch needs. Custom OEM/ODM orders may have different requirements based on specifications.
Q: How quickly can you ship after payment?
A: In-stock standard bearings ship within 3-5 days. Bulk orders typically deliver in 5-15 days, depending on quantity and customization needs.
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.
