Wholesale N Series Cylindrical Roller Bearings Manufacturer
Shanghai Yinin Bearing & Transmission Company is a China-based manufacturer and supplier of N Series cylindrical roller bearings. With over 20 years of industry experience and an integrated sales and manufacturing group, we deliver precision-engineered bearings for demanding radial-load applications. Our range includes N1000, N200, N2200, N300, and N2300 series, each designed for high-speed rotating machinery where axial displacement must be accommodated.
We supply wholesale N Series cylindrical roller bearings to OEMs, distributors, and plant maintenance teams across the United States, Europe, and Asia. Our factory in Jiangsu Province operates with modern equipment and a dedicated quality control system, ensuring consistent dimensional accuracy and material integrity for every batch.
Product Range and Application Fit
N Series bearings feature a single row of cylindrical rollers guided by a cage, with two integral ribs on the inner ring and no ribs on the outer ring. This design allows free axial displacement of the shaft relative to the housing, making them ideal for non-locating bearing positions in multi-bearing arrangements.
| Series |
Bore Range (Typical) |
Key Characteristics |
Common Applications |
| N1000 Series |
10–100 mm |
Light series, high-speed capability |
Machine tool spindles, textile machinery |
| N200 Series |
10–150 mm |
Standard series, balanced load and speed |
Electric motors, gearboxes, pumps |
| N2200 Series |
25–200 mm |
Wider inner ring, higher radial load capacity |
Conveyors, crushers, industrial fans |
| N300 Series |
30–200 mm |
Heavy series, robust for shock loads |
Heavy machinery, rolling mills |
| N2300 Series |
40–300 mm |
Extra heavy series, maximum radial load |
Mining equipment, large gearboxes |
Engineering and Material Considerations
We manufacture N Series bearings from high-carbon chromium steel (GCr15) or, on request, case-hardened steel for impact-prone applications. Rollers are precision-ground and crowned to optimize stress distribution, while cages are available in pressed steel, machined brass, or polyamide depending on operating temperature and speed requirements.
For high-speed applications, we recommend bearings with machined brass cages and increased internal clearance. For contaminated environments, sealed or shielded variants can be supplied, though N Series bearings are typically open to allow axial displacement.
Critical Specifications and Tolerances
Our N Series bearings are produced to ISO 492 dimensional and running accuracy standards, with P0 as standard and P6/P5 available for precision applications. Radial internal clearance is supplied in C0 (normal), with C3 or C4 for higher operating temperatures or interference fits.
- Dimensional tolerance: P0 to P5
- Radial clearance: C0, C3, C4
- Noise level: Z1, Z2, or Z3 per customer requirement
- Vibration grade: V1, V2, or V3
- Heat treatment: stabilized up to 120°C (standard), 150°C or 200°C on request
Quality Assurance and Testing
We operate a multi-stage inspection process: incoming material verification, in-process dimensional checks, and final testing on finished bearings. Each batch is tested for radial clearance, noise, and vibration using precision instruments in our R&D laboratory. Full inspection reports can be provided with shipment, and we comply with international standards such as ISO 9001 for quality management.
Customization and Support
Beyond standard N Series bearings, we offer customization in bore size, width, cage material, and tolerance class. Our technical team works with you to match the bearing to your shaft and housing fits, lubrication method, and operating envelope. We also provide non-standard high-end bearings for specialized equipment.
For related configurations, explore our NU Series (for locating positions) and NJ Series (for single-direction axial location).
Information We Use to Configure Your Solution
To prepare an accurate quotation and technical proposal, we need the following details from your side:
- Bearing series and bore size, or shaft diameter and housing bore
- Operating speed (RPM) and load conditions (radial, axial, shock)
- Temperature range and lubrication type (oil or grease)
- Required tolerance class and radial clearance
- Expected service life and any specific mounting requirements
- Order quantity and packaging preference
With this information, we can recommend the optimal cage design, material grade, and internal geometry to ensure reliable performance in your application.
Installation, Maintenance, and Service
Proper installation is critical for N Series bearings. We provide mounting instructions with each order, including recommended shaft and housing tolerances, and we advise on correct axial location using snap rings or end covers. For maintenance, periodic lubrication and monitoring of vibration and temperature help extend bearing life. Our after-sales team is available for technical consultation, and we supply spare parts and replacement bearings promptly.
Packaging and Delivery
Bearings are individually wrapped in anti-rust paper and packed in export-grade cartons or wooden crates, depending on size and quantity. Standard in-stock items ship within 3 working days, while custom orders are scheduled based on production lead time. We coordinate logistics to ensure safe and timely delivery to your port or warehouse.
Frequently Asked Questions
What is the difference between N Series and NU Series cylindrical roller bearings?
N Series bearings have two ribs on the inner ring and none on the outer ring, allowing axial displacement of the shaft relative to the housing. NU Series have two ribs on the outer ring and none on the inner ring, allowing axial displacement of the inner ring relative to the shaft. Both are used as non-locating bearings, but the choice depends on which ring rotates and how the shaft is guided.
Can you supply N Series bearings with special tolerances or clearance?
Yes, we can manufacture N Series bearings with P6 or P5 tolerances and C3 or C4 clearance to suit high-speed or high-temperature applications. Please specify your requirements in the inquiry so we can adjust the manufacturing process accordingly.
What is the minimum order quantity for wholesale purchases?
Our standard MOQ is 100 sets for stock sizes, but we can accommodate smaller trial orders for new customers. For custom or non-standard bearings, MOQ may be higher depending on the complexity and production setup.
How do you ensure consistent quality across large batches?
We follow a strict QC system: incoming material inspection, in-process checks, and final testing on every batch. We use precision instruments to measure dimensions, noise, and vibration, and we can provide inspection reports with the shipment.
Do you offer technical support for bearing selection and installation?
Yes, our technical team assists with bearing selection, shaft and housing fit recommendations, and installation guidelines. We also provide after-sales support to troubleshoot any issues that arise during operation.
Related Products and Categories
Our portfolio also includes Products for applications with different operating ranges, interfaces or integration requirements.
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