Product Specifications
| Parameter |
Details |
| Model NO. |
RNA4840 |
| Product Name |
Needle Roller Bearing |
| Specification |
220x250x50 mm |
| Load Direction |
Radial Bearing |
| Style |
Without Outer Ring, Without Inner Ring |
| Type |
Closed |
| Material |
Bearing Steel |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Clearance |
C0, C3, C4 |
| Lubrication |
Grease or Oil |
| HS Code |
8482102000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Gearboxes, Reducers |
| Automotive |
Transmission Systems, Axle Assemblies |
| Agricultural Machinery |
Tractors, Harvesters, Tillage Equipment |
| Engineering |
Excavators, Construction Machinery |
Reduce Downtime with Precision RNA4840 Needle Roller Bearings for Industrial Machinery
Industrial machinery operators face critical challenges with bearing failures—unplanned downtime from premature wear, compatibility issues from incorrect specifications, and supply delays that halt production lines. When standard bearings fail under heavy radial loads, the cost of replacement parts and lost productivity escalates quickly. The RNA4840 needle roller bearing addresses these pain points with engineered precision for reliable performance in demanding industrial applications.
Engineered for Heavy-Duty Radial Loads in Industrial Equipment
The RNA4840 Needle Roller Bearing delivers solutions to common industrial bearing challenges. With a 220x250x50mm design optimized for radial load handling, this bearing supports high-stress operations in gearboxes, machine tools, and agricultural equipment. Our production capabilities ensure flexible order options—1 piece MOQ for standard bearings and 3-5 day sample delivery—so you can maintain inventory without overstocking. As a professional bearing manufacturer with ISO 9001:2015 certification, we guarantee consistent quality across every unit.
Optimal Performance in High-Load Industrial Environments
This closed-type radial needle bearing excels in applications requiring compact design with maximum load capacity. The 220mm inner diameter and 250mm outer diameter balance space efficiency with load handling, making it ideal for gear reducers and conveyor systems where radial loads dominate. Constructed from high-grade bearing steel, it withstands continuous operation under heavy loads while maintaining dimensional stability. The P0-P4 precision grades ensure compatibility with both standard and high-precision machinery, reducing vibration and extending equipment lifespan.
Technical Features That Maximize Machinery Uptime
The RNA4840’s performance is defined by critical technical specifications that directly impact industrial machinery reliability. Its precision rating options (P0-P4) allow customization—P0 for general industrial use and P4 for high-accuracy applications like CNC machine spindles, where minimal runout is essential. Clearance grades (C0, C3, C4) accommodate thermal expansion in different operating temperatures; C3 and C4 clearances are recommended for high-speed equipment to prevent overheating. The closed-type design retains lubrication and excludes contaminants, reducing maintenance needs in dusty industrial environments. When paired with proper grease or oil lubrication, this bearing achieves optimal friction reduction for extended service life.
Why Genuine Bearings Lower Total Cost of Ownership
Choosing authentic needle roller bearings like the RNA4840 eliminates hidden costs associated with counterfeit products. Inferior bearings often fail prematurely, causing secondary damage to shafts and housings that multiplies repair expenses. Our bearings meet ISO international standards, ensuring consistent performance and predictable service life—critical factors in calculating total cost of ownership. With a 12-month warranty and free replacement for qualified defects, we stand behind product reliability. For industrial operations, the investment in genuine bearings reduces unplanned downtime and maintenance costs, delivering higher long-term value than cheaper alternatives.
Our Commitment to Reliable Bearing Supply
With over 18 years of bearing manufacturing and export experience, we serve global clients across Europe, North America, and Southeast Asia. Our technical R&D team and experienced QC staff ensure every RNA4840 bearing meets strict quality control standards, from raw material inspection to full-process production supervision. We support OEM/ODM customization, adjusting dimensions and specifications to match customer drawings. Multiple payment methods—T/T, Credit Card, and Alibaba platform orders—provide secure transaction options. Our after-sales technical team offers free guidance on selection, installation, and maintenance, ensuring optimal bearing performance in your specific application.
Packaging & Shipping
- Carton and pallet packaging for secure transport
- 3-7 working days delivery for sample orders
- Flexible shipping options including DHL, FedEx, UPS, air, and sea freight
- Real-time logistics tracking provided for all orders
- 1 piece MOQ for standard bearings, supporting emergency maintenance needs
Secure Your RNA4840 Bearing Now
Don’t let bearing issues disrupt your production schedule. Whether you need a single replacement or bulk order, our RNA4840 Needle Roller Bearings are ready to ship. Providing your equipment model, load requirements, and quantity allows our technical team to confirm optimal specifications, ensuring perfect compatibility and performance.
Frequently Asked Questions
Q: Is this a genuine bearing?
A: Yes, we are a professional bearing manufacturer with strict quality control processes. All products meet ISO standards and are backed by our 12-month warranty.
Q: How do I confirm if the RNA4840 fits my equipment?
A: Provide your equipment model, shaft diameter, and operating conditions. Our technical team will verify compatibility and recommend the appropriate precision and clearance grade.
Q: What is your warranty policy?
A: We offer a 12-month warranty from the date of delivery. Qualified defective products are eligible for free replacement or refund.
Q: What is the minimum order quantity?
A: Standard bearings have a 1 piece MOQ, supporting both emergency repairs and small-batch purchases.
Q: How long does shipping take?
A: Sample orders ship within 3-7 working days. Bulk order delivery time is 5-15 working days, depending on quantity.
Q: Can you provide custom bearing solutions?
A: Yes, we support OEM/ODM customization. Contact us with your drawings or specifications for tailored solutions.
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