Product Specifications
| Parameter |
Details |
| Model NO. |
RNA4912 |
| Product Name |
Needle Roller Bearing |
| Load Direction |
Radial Bearing |
| Style |
Without Outer Ring, Without Inner Ring |
| Type |
Closed |
| Material |
Bearing Steel |
| Specification |
68*85*25 mm |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Clearance |
C0 C3 C4 |
| Lubrication |
Grease or Oil |
| HS Code |
8482102000 |
| Delivery Time |
3-7days |
| Service |
OEM ODM |
| Transport Package |
Carton Pallet |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Gearboxes, Reducers, Conveyors |
| Automotive |
Transmission Systems, Axle Assemblies |
| Agricultural Machinery |
Tractors, Harvesters, Tillage Equipment |
| Construction |
Excavators, Loaders, Concrete Mixers |
| Manufacturing |
Printing Machines, Textile Machinery, Packaging Equipment |
Eliminate Downtime with Precision Needle Roller Bearings RNA4912 RNA4913 RNA4914 for Industrial Machinery
Industrial operations face critical challenges when bearings fail unexpectedly—unplanned downtime, costly repairs, and production losses that erode profitability. Many buyers struggle with sourcing reliable needle roller bearings that match exact specifications, especially when dealing with non-standard sizes or urgent replacement needs. Compromising on quality by choosing low-grade alternatives often leads to premature failure, while waiting for overseas shipments can leave equipment idle for weeks.
High-Precision Needle Roller Bearings Engineered for Reliable Performance
Our RNA4912, RNA4913, and RNA4914 Needle Roller Bearings address these pain points with precision engineering and flexible supply solutions. With dimensions of 68x85x25mm and precision grades from P0 to P4, these bearings are designed to deliver stable performance in industrial machinery applications. As a professional bearing manufacturer with decades of experience, we support both standard orders and OEM/ODM customization, ensuring you get the exact bearing your equipment requires—without the wait.
Optimal Performance in Demanding Industrial Environments
These needle roller bearings excel in high-radial-load applications where space is constrained, making them ideal for gearboxes, machine tool spindles, and conveyor systems. Their closed design and bearing steel construction provide durability against continuous operation, while clearance options (C0, C3, C4) allow adaptation to thermal expansion and operational stress. Whether your machinery operates at moderate speeds with heavy loads or requires precise rotational accuracy, these bearings maintain consistent performance to keep your production line running.
Key Technical Features That Drive Machinery Efficiency
The precision rating of these bearings directly impacts operational reliability: P0 grade suits general industrial use, while P4 grade meets the tight tolerance requirements of high-precision equipment, reducing vibration and noise. The radial load capacity, optimized by the needle roller design, ensures efficient power transmission with minimal friction. Clearance grades (C3 and C4) accommodate thermal growth in high-temperature environments, preventing seizure and extending service life. Additionally, compatibility with both grease and oil lubrication allows flexibility in maintenance scheduling and operational conditions.
Why Quality Bearings Reduce Total Cost of Ownership
Choosing genuine, high-quality needle roller bearings eliminates the hidden costs of counterfeit products. Inferior bearings often fail within months, leading to repeated replacements, unplanned downtime, and potential damage to adjacent components. Our bearings, manufactured under strict ISO 9001:2015 quality standards, undergo comprehensive testing—including dimensional checks and performance validation—to ensure reliability. With a 12-month warranty and responsive after-sales support, investing in quality bearings reduces long-term costs by minimizing failures and extending equipment uptime.
Our Commitment to Reliable Supply and Service
With over 18 years of experience serving global markets, we stand behind our products with tangible guarantees. Our factory maintains advanced production lines and in-house testing laboratories, ensuring each bearing meets international standards (ISO, ABMA, DIN). We offer flexible order policies, including 1-piece MOQ for standard bearings and 3-7 day delivery for urgent orders, supported by multiple secure payment methods (T/T, Credit Card, Alibaba). Our technical team provides free guidance on selection, installation, and maintenance, helping you optimize bearing performance and reduce operational issues.
Packaging & Shipping
- Secure packaging in cartons with pallets to prevent damage during transit
- 3-7 working days delivery for standard orders, with expedited options available
- Global shipping via DHL, FedEx, UPS, air freight, or sea freight based on your needs
- Real-time logistics tracking provided for all shipments
- Flexible MOQ: 1 piece for standard bearings, customized order quantities negotiable
Get Your Precision Needle Roller Bearings Today
Don’t let bearing issues disrupt your production schedule. Whether you need RNA4912, RNA4913, RNA4914, or custom-sized needle roller bearings, we provide the quality and service to keep your machinery running. Send us your bearing designation, application details, and quantity, and our team will respond with a quote within 24 hours—so you can minimize downtime and maintain productivity.
Frequently Asked Questions
Q: Are these needle roller bearings genuine and traceable?
A: Yes, all our bearings are manufactured in-house under strict quality control and meet ISO standards. We provide full traceability documentation for every order.
Q: How can I confirm if the RNA4912 bearing fits my equipment?
A: Provide your equipment model or technical drawings, and our engineering team will verify compatibility and recommend the optimal bearing specifications.
Q: What is the warranty policy for these bearings?
A: We offer a 12-month warranty from the date of delivery, covering manufacturing defects with free replacement or refund options.
Q: What is the minimum order quantity for standard bearings?
A: We accept orders with a minimum of 1 piece for standard bearings, supporting both small repairs and large-scale production needs.
Q: How quickly can I receive my order?
A: Standard orders ship within 3-7 working days. For urgent requests, contact our team for expedited delivery options.
Q: Can you provide technical support for installation and maintenance?
A: Yes, our professional technical team offers free guidance on bearing selection, installation, lubrication, and troubleshooting to ensure optimal performance.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
