Product Specifications
| Parameter |
Details |
| Model NO. |
NU311 |
| Product Name |
Cylindrical Roller Bearing |
| Outer Dimension |
35mm-400mm |
| Specification |
55*120*29mm |
| Material |
Bearing Steel |
| Structure |
Cylindrical |
| Spherical |
Non-Aligning Bearings |
| Load Direction |
Radial Bearing |
| Separated |
Separated |
| Seals Type |
Open |
| Lubricate |
Oil Grease Dry |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Number of Row |
Single Row |
| Trademark |
NSK |
| Origin |
Japan |
| HS Code |
8482500090 |
Application Industries
| Industry |
Typical Equipment |
| Automotive |
Transmissions, Axles, Gearboxes, Steering Systems |
| Industrial Machinery |
Machine Tools, Pumps, Compressors, Conveyors |
| Manufacturing |
Printing Presses, Textile Machinery, Plastic Extruders |
| Agriculture |
Tractors, Harvesters, Farm Equipment Gearboxes |
Eliminate Downtime with Genuine NSK NU311 Cylindrical Roller Bearings
Auto spare parts manufacturers and repair shops know the cost of bearing failure: unscheduled downtime, production delays, and expensive replacements. When low-quality bearings fail prematurely in critical components like transmissions or axles, the ripple effect disrupts entire operations. Sourcing reliable, high-precision bearings with flexible ordering and fast delivery has long been a challenge in the industry.
Genuine NSK NU311 Bearings: Precision You Can Rely On
The NSK NU311 Cylindrical Roller Bearing solves these pain points with its authentic Japanese manufacturing and strict quality control. As an integrated bearing supplier with ISO9001 certification, we ensure every NSK NU311 bearing meets P0-P4 precision standards, delivering consistent performance in automotive and industrial applications. With 1pc MOQ for standard items and 3-5 days sample lead time, we support both small-batch repairs and large-scale production needs.
Engineered for High-Radial Load Applications
This cylindrical roller bearing excels in environments with heavy radial loads and moderate speeds, making it ideal for automotive transmissions, machine tool spindles, and industrial gearboxes. Its separated inner and outer rings allow for easy mounting and dismounting, simplifying maintenance procedures. The open design facilitates lubrication customization, ensuring optimal performance in diverse operating conditions—from high-temperature industrial settings to the demanding environments of agricultural machinery.
Precision Parameters That Matter
The NU311’s technical specifications directly impact equipment performance. With a bore diameter of 55mm, outer diameter of 120mm, and width of 29mm, it fits standard automotive and industrial component dimensions. The P0-P4 precision ratings ensure minimal vibration and noise, critical for passenger vehicle comfort and industrial equipment accuracy. As a radial bearing, it efficiently handles axial displacement, protecting adjacent components from excessive stress during operation. The bearing steel construction provides the durability needed to withstand continuous use in high-load applications.
Why Authenticity Beats Counterfeit Savings
Choosing genuine NSK NU311 bearings over counterfeit alternatives reduces total cost of ownership significantly. Counterfeit bearings often fail within months, leading to repeated replacements, production downtime, and potential damage to expensive equipment. In contrast, our authentic NSK bearings come with a 12-month global warranty, ensuring reliability and long service life. Each unit is traceable to the original manufacturing process, giving you confidence in the quality and performance of every bearing you install.
Your Trusted Bearing Partner Since 2005
With 18 years of experience serving global buyers across Europe, America, Southeast Asia, and the Middle East, Jinan Saifan Bearing has built a reputation for reliability. Our full R&D and QC lab ensures every bearing meets strict quality standards before shipment. We offer free technical guidance to help you select the right bearing for your application, and our defect replacement policy provides peace of mind. Whether you need a single sample for testing or bulk delivery for production, our 5-15 day bulk delivery time ensures you get the bearings you need when you need them.
Packaging & Shipping
- Standard carton packaging with pallet option for bulk orders
- 3-5 days sample lead time for evaluation and testing
- 5-15 days bulk delivery to meet production schedules
- Multiple shipping options including TNT, DHL, and sea freight
- 1pc MOQ available for emergency repair needs
Get Your NSK NU311 Bearings Today
Don’t let bearing issues slow down your operations. Whether you’re repairing a single vehicle or manufacturing components at scale, the NSK NU311 Cylindrical Roller Bearing delivers the precision and reliability you need. Contact us now with your quantity requirements and application details to get a competitive quote and fast delivery.
Frequently Asked Questions
Q: Are these genuine NSK bearings?
A: Yes, we supply authentic NSK bearings sourced directly from authorized channels, with full traceability to ensure originality.
Q: How do I confirm if the NU311 fits my equipment?
A: Provide your equipment model or technical specifications, and our technical team will verify compatibility free of charge.
Q: What is the warranty period for this bearing?
A: We offer a 12-month global warranty covering manufacturing defects, with free replacement or refund available.
Q: What is the minimum order quantity?
A: Standard items have a 1pc MOQ, supporting both emergency repairs and small-batch purchases.
Q: How long does shipping take?
A: Samples ship in 3-5 days, while bulk orders are delivered within 5-15 days via your preferred shipping method.
Q: How can I verify the bearing’s authenticity?
A: Each NSK bearing features unique markings and packaging. We provide documentation to confirm authenticity upon request.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
