Product Specifications
| Parameter |
Details |
| Model NO. |
NK45/20 |
| Product Name |
Needle Roller Bearing |
| Load Direction |
Radial Bearing |
| Style |
Without Outer Ring, Without Inner Ring |
| Material |
Bearing Steel |
| Type |
Closed |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Clearance |
C0, C3, C4 |
| Specification |
45×55×20 mm |
| HS Code |
8482102000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Gearboxes, Reducers, Printing Equipment |
| Automotive |
Transmission Systems, Auxiliary Components |
| Agricultural Machinery |
Tractors, Harvesters |
| New Energy |
Wind Power Generators, Solar Tracking Systems |
Reduce Downtime with Precision NK45/20 Needle Roller Bearings for Industrial Machinery
Industrial machinery operators know the cost of unexpected downtime—hours lost to bearing failures, production delays, and emergency repairs. Many face challenges with generic bearings that fail prematurely under heavy loads or fail to meet precision requirements, leading to increased maintenance cycles and operational costs.
Engineered for Reliable Performance in Critical Applications
The NK45/20 Needle Roller Bearing addresses these pain points with its robust design and high-precision manufacturing. As a radial bearing with dimensions 45×55×20mm, it is optimized for industrial machinery where space is limited but performance cannot be compromised. Our production capabilities ensure consistent quality, with precision grades from P0 to P4 and noise grades up to Z4, meeting the demands of high-speed and heavy-load applications.
Optimal Performance in Demanding Industrial Environments
This needle roller bearing excels in applications requiring high radial load capacity and rigidity, such as machine tool spindles, gearboxes, and printing machinery. Its closed type design and bearing steel construction provide durability, while options for grease or oil lubrication allow adaptability to different operating conditions. Whether in continuous production lines or intermittent heavy-duty cycles, the NK45/20 delivers stable performance to keep your machinery running efficiently.
Key Technical Features That Drive Performance
Precision rating is critical for minimizing vibration and ensuring smooth operation—our P0 to P4 grades meet strict dimensional tolerances, reducing noise and extending service life. Clearance options (C0, C3, C4) allow customization for thermal expansion and preload requirements, ensuring optimal fit in various assemblies. The bearing’s compact size (45×55×20mm) makes it ideal for space-constrained industrial equipment, while its closed design protects internal components from contamination, reducing maintenance needs.
Why Genuine Quality Matters for Total Cost of Ownership
Choosing genuine bearings over counterfeit alternatives directly impacts your bottom line. Counterfeit bearings often fail prematurely, leading to unplanned downtime, costly repairs, and potential damage to关联设备. Our NK45/20 bearings adhere to ISO, ABMA, and DIN international standards, ensuring reliability and compliance with industrial regulations. With a 12-month warranty and strict quality control processes—including incoming material inspections and full-process production supervision—we stand behind every product, reducing the risk of unexpected failures and lowering long-term operational costs.
Your Trusted Partner for Bearing Solutions
With over 18 years of manufacturing and export experience, Jinan Saifan Bearing Co., Ltd combines technical expertise with customer-focused service. Our one-stop capabilities include independent R&D, mass production, and global sales, supported by a professional technical team offering free guidance on selection, installation, and maintenance. We hold ISO 9001:2015 and ISO 14001 certifications, and our flexible order policies (1 piece MOQ for standard bearings, 3-5 day sample delivery) ensure you get the bearings you need when you need them. As a high-tech enterprise, we prioritize innovation and quality, making us a reliable partner for industrial clients worldwide.
Packaging & Shipping
- Secure packaging with carton and pallet to prevent damage during transit
- Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
- Multiple logistics options available, including express (DHL, FedEx) and sea/air freight
- Real-time tracking provided for all shipments
- 1 piece MOQ for standard bearings, with customized order quantities negotiable
Get Your NK45/20 Bearings Today
Don’t let bearing issues disrupt your production schedule. Whether you need a single replacement or bulk order, our NK45/20 Needle Roller Bearings are ready to ship. Contact us with your requirements, and our team will assist with选型 and provide a competitive quote within 24 hours.
Frequently Asked Questions
Q: Are these genuine bearings?
A: Yes, all our bearings are manufactured in-house under strict quality control or sourced from authorized partners like NSK and INA. Each product meets international standards and comes with traceable documentation.
Q: How do I confirm if the NK45/20 is compatible with my equipment?
A: Provide your equipment model, operating conditions (load, speed, temperature), and required precision grade. Our technical team will verify compatibility and recommend the optimal configuration.
Q: What is the warranty policy?
A: We offer a 12-month warranty from the date of delivery. Defective products due to manufacturing issues will be replaced free of charge or refunded, per customer preference.
Q: What is the minimum order quantity?
A: Standard bearings have a 1 piece MOQ. Sample orders are available without MOQ, and customized orders can be negotiated based on specifications.
Q: How long does shipping take?
A: Sample orders ship within 3-5 working days, bulk orders within 5-15 working days. Express delivery takes 3-7 days globally; sea freight timelines vary by destination.
Q: How can I verify the authenticity of the bearing?
A: Our packaging includes product labels with model information and batch numbers. We can provide Certificates of Conformity and test reports upon request to confirm compliance with standards.
Ready to order or need a quote?
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