Product Specifications
| Parameter |
Details |
| Model NO. |
RNAV4903 |
| Load Direction |
Radial Bearing |
| Style |
Without Outer Ring, Without Inner Ring |
| Material |
Bearing Steel |
| Type |
Closed |
| Product Name |
Needle Roller Bearing |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Clearance |
C0 C3 C4 |
| Delivery Time |
3-7days |
| Service |
OEM ODM |
| Transport Package |
Carton Pallet |
| Specification |
22*30*13 mm |
| Trademark |
BDL |
| Origin |
China |
| HS Code |
8482102000 |
| Production Capacity |
1000000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Printing Equipment, Reducers |
| Automotive |
Transmission Systems, Wheel Hubs |
| Agricultural Machinery |
Harvesters, Tractors |
| New Energy |
Wind Turbines, Photovoltaic Equipment |
| Home Appliances |
Motors, Compressors |
Prevent Equipment Downtime with Precision RNAV4903-RNAV4907 Needle Roller Bearings
Industrial machinery operators know the frustration of unexpected downtime caused by bearing failures. When low-quality bearings wear prematurely, production lines halt, maintenance costs rise, and deadlines slip. Sourcing reliable high-precision bearings with flexible order options can be a challenge, especially when dealing with overseas suppliers.
High Precision Needle Roller Bearings for Critical Machinery Performance
Our RNAV4903-RNAV4907 Needle Roller Bearing series addresses these pain points with P0-P4 precision ratings and a compact 22*30*13 mm design. As an integrated manufacturer with full R&D capabilities and ISO9001 certification, we ensure consistent quality across every unit. Whether you need a single sample for testing or bulk orders for production, our 1pc MOQ and 3-7 day delivery window keeps your operations running smoothly.
Engineered for Demanding Industrial Environments
This Needle Roller Bearing performs reliably in radial load applications where space is limited. The closed design and bearing steel construction provide durability in machine tools, printing presses, and reducers—equipment that requires both high precision and resistance to continuous operation stress. Without outer and inner rings, it offers direct mounting flexibility, making it ideal for custom machinery configurations where weight and space optimization are critical.
Technical Specifications That Matter for Machine Performance
The precision rating of P0-P4 directly impacts your machinery’s accuracy—P4 grade bearings minimize runout, ensuring consistent performance in high-speed applications like CNC spindles. Clearance options (C0, C3, C4) allow fine-tuning for thermal expansion: C3 clearance suits applications with temperature variations, while C0 provides tighter control for precision instruments. The closed style design prevents contamination, extending service life in dusty industrial environments, while compatibility with both grease and oil lubrication offers flexibility for different operating conditions.
Why Quality Bearings Reduce Total Cost of Ownership
Choosing genuine high-precision bearings eliminates the hidden costs of counterfeit products. Inferior bearings may save money upfront but often fail within months, leading to unplanned downtime, replacement labor, and potential damage to mating components. Our RNAV Series Bearings, backed by ISO14001 certification and a 12-month global warranty, deliver predictable performance that lowers long-term maintenance expenses. For industrial machinery makers, this reliability translates to better equipment uptime and stronger customer trust in your products.
Your Reliable Long-Term Bearing Partner
With 18 years of manufacturing experience, we supply to buyers across Europe, America, Southeast Asia, and the Middle East. Our QC lab conducts rigorous testing at every production stage, from raw material inspection to final dimensional checks. We offer full OEM/ODM customization to meet unique machinery requirements, with free technical guidance to ensure proper bearing selection. Our defect replacement and refund policy provides peace of mind, while multiple payment options (T/T, credit card, Alibaba trade) simplify transactions. When you partner with us, you gain access to a stable supply chain with competitive pricing and responsive support.
Packaging & Shipping
- Carton and pallet packaging ensures secure transportation
- 3-7 days delivery time for standard orders
- Flexible shipping options including DHL, FedEx, UPS, air, and sea freight
- Real-time logistics tracking provided for all shipments
- 1pc MOQ available for standard items, supporting emergency repairs
Get Your RNAV Series Bearings Today
Don’t let bearing issues disrupt your production schedule. Whether you need to replace worn components or source bearings for new machinery, our RNAV4903-RNAV4907 Needle Roller Bearings are ready to ship. Send us your requirements, and we’ll help you select the right precision grade and clearance for your application.
Frequently Asked Questions
Q: Are these bearings genuine and traceable?
A: Yes, we are an integrated manufacturer with full quality control processes. Each bearing is produced in our ISO-certified facility and can be traced through our production records.
Q: How do I confirm if the RNAV4903 is suitable for my equipment?
A: Provide your equipment model or technical specifications (load, speed, temperature), and our engineering team will verify compatibility and recommend the appropriate precision grade and clearance.
Q: What warranty do you offer on these needle roller bearings?
A: We provide a 12-month global warranty covering manufacturing defects. If a bearing fails under normal operating conditions, we offer free replacement or refund.
Q: What is the minimum order quantity for the RNAV4903 bearing?
A: We accept 1pc MOQ for standard items, making it easy to order samples for testing or small batches for maintenance needs.
Q: How quickly can you ship an order?
A: Standard items have a 3-7 day delivery time. For urgent requirements, contact us to discuss expedited production and shipping options.
Q: Can you provide technical drawings or installation guidance?
A: Yes, our technical team offers free guidance on installation, lubrication, and maintenance. We can also provide detailed drawings upon request for integration into your machinery designs.
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