Product Specifications
| Parameter |
Details |
| Model NO. |
21310EK |
| 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 |
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, Gearboxes, Reducers, Conveyors |
| Automotive |
Transmission Systems, Axles |
| Agricultural Machinery |
Tractors, Harvesters |
| Construction |
Excavators, Loaders |
| Manufacturing |
Printing Machines, Textile Machinery |
Reduce Machinery Downtime with 21310EK Self-Aligning Roller Bearings
Industrial machinery operators know the frustration of unexpected downtime caused by bearing failures. Misalignment in shafts can lead to premature wear, while low-quality bearings often fail under heavy loads, disrupting production schedules and increasing maintenance costs. Sourcing reliable bearings with flexible order options and quick delivery can be a challenge, especially when dealing with multiple suppliers for different precision grades.
Self-Aligning Roller Bearings for Stable Industrial Performance
The 21310EK Self-Aligning Roller Bearing is engineered to solve misalignment issues in industrial machinery, ensuring smooth operation even when shafts are not perfectly aligned. With precision grades from P0 to P4 and clearance options C0, C3, and C4, this bearing meets diverse application needs. Our factory, equipped with advanced precision processing equipment and automated production lines, ensures consistent quality. We support OEM and ODM customization, allowing adjustments to structure, size, and packaging based on customer drawings, making us a one-stop solution for bearing needs.
Optimal Performance in Demanding Industrial Conditions
Self-aligning roller bearings like the 21310EK are designed to handle heavy radial loads and accommodate shaft misalignment, making them ideal for industrial machinery operating under dynamic conditions. Whether in gearboxes, conveyors, or manufacturing equipment, these bearings provide stable performance, reducing the risk of unexpected failures. The double-row roller design enhances load-carrying capacity, while the use of high-grade bearing steel ensures durability even in continuous operation scenarios.
Key Technical Features for Reliable Operation
The 21310EK Self-Aligning Roller Bearing offers several technical advantages that contribute to its reliability. The precision rating (P0-P4) ensures minimal vibration and noise, critical for high-speed machinery. Clearance options (C0, C3, C4) allow customization based on operating temperature and load conditions, preventing overheating and premature wear. The unseparated design simplifies installation and maintenance, while the bearing steel material provides excellent strength and resistance to fatigue, ensuring a long service life even in harsh industrial environments.
Choosing Quality Bearings to Lower Total Costs
Investing in genuine, high-quality bearings like the 21310EK reduces long-term costs compared to using counterfeit or low-grade alternatives. Counterfeit bearings often fail early, leading to costly downtime, repair expenses, and potential damage to other machinery components. Our bearings meet ISO, ABMA, and DIN international standards, ensuring consistent performance and reliability. With a 12-month warranty and free replacement for qualified defective products, we help customers minimize risks and maintain lower total operational costs.
Why Saifan Bearings is Your Trusted Partner
With over 15 years of manufacturing and export experience, Saifan Bearings has established a reputation for reliability. We hold ISO 9001:2015 and ISO 14001 certifications, ensuring strict quality control from raw material inspection to finished product testing. Our professional technical R&D team and experienced QC staff guarantee that every bearing meets high standards. We serve customers in Europe, North America, Southeast Asia, and the Middle East, offering flexible order policies with a 1-piece MOQ for standard bearings and sample orders without MOQ. Our efficient delivery ensures sample orders within 3-5 working days and bulk orders within 5-15 working days, supported by multiple safe payment methods including T/T, Credit Card, and Alibaba platform payments.
Packaging & Shipping
- Packaged in carton pallets to ensure safe transportation
- Sample orders delivered within 3-5 working days
- Bulk orders shipped within 5-15 working days
- Multiple logistics options available including express, air, and sea freight
- 1 piece MOQ for standard bearings, sample orders without MOQ
Secure Your 21310EK Bearing Today
Don’t let bearing issues disrupt your production. Contact us with your bearing requirements, including model, quantity, and application details, to get a prompt quote. With our ready stock and efficient delivery, you can minimize downtime and keep your machinery running smoothly.
Frequently Asked Questions
Q: Are these self-aligning roller bearings genuine?
A: We supply genuine bearings from brands like NSK and INA, with each product traceable to the正品 supply chain. We can provide authorization certificates upon request.
Q: How do I confirm if the 21310EK bearing fits my equipment?
A: Our professional technical team offers free guidance on bearing selection. Provide your equipment model or specific operating conditions, and we will help confirm the correct bearing specifications.
Q: What is the warranty policy for these bearings?
A: All products come with an official 12-month warranty from the date of receipt. Qualified defective products are eligible for free replacement or refund.
Q: What is the minimum order quantity?
A: We offer a flexible order policy with a 1-piece MOQ for standard bearings. Sample orders have no MOQ requirement.
Q: How long does shipping take?
A: Sample orders are delivered within 3-5 working days, and bulk orders within 5-15 working days. We support DHL, FedEx, UPS, air, and sea freight options.
Q: How can I verify the authenticity of the bearings?
A: Genuine bearings come with original packaging and branding. We provide traceability documents, and you can check against brand-specific verification methods such as laser
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.
