Product Specifications
| Parameter |
Details |
| Model NO. |
RNAV4920 |
| 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 |
3-7 days |
| Service |
OEM, ODM |
| Transport Package |
Carton, Pallet |
| Specification |
115*140*40 mm |
| Origin |
China |
| HS Code |
8482102000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Printing Equipment, Reducers |
| Automotive |
Transmission Systems, Gearboxes |
| New Energy |
Wind Turbines, Solar Panel Equipment |
| Agriculture |
Harvesters, Tractors |
| Construction |
Excavators, Heavy Load Machinery |
Minimize Downtime with Reliable Needle Roller Bearing Mountings Nav4916 to Nav4922
Industrial machinery operators know the frustration of unexpected bearing failures—costing hours of production and thousands in repairs. Sourcing precise Needle Roller Bearing Mountings often means navigating minimum order quantities that delay maintenance, or questionable quality that risks repeat failures. When your machine tools or printing presses need replacement bearings, waiting weeks for parts isn’t an option.
Precision Needle Roller Bearing Mountings for Immediate Maintenance Needs
Our Needle Roller Bearing Mountings, including models Nav4916, Nav4918, Nav4919, Nav4920, and Nav4922, are engineered to solve these challenges. With a 1pc MOQ for standard items and 3–7 days delivery, we support both emergency repairs and scheduled maintenance. Made from high-grade bearing steel with precision ratings from P0 to P4, these bearings meet the strict requirements of industrial machinery like CNC spindles and reducers, where accuracy directly impacts output quality.
Optimal Performance in Demanding Industrial Environments
Designed as closed-type radial bearings without inner or outer rings, these mountings excel in applications with limited space and high radial loads—common in machine tool gearboxes and printing press drives. Their robust construction handles continuous operation with grease or oil lubrication, while clearance options (C0, C3, C4) allow customization for thermal expansion and preload requirements. Whether your equipment operates at high speeds or under heavy loads, the right clearance and precision grade ensure minimal vibration and extended service life.
Technical Features That Drive Machinery Reliability
The performance of these Needle Roller Bearing Mountings is defined by critical technical details. Precision ratings (P0-P4) control dimensional accuracy: P4 grade bearings, for example, reduce runout to less than 5μm, essential for high-speed spindles where even minor misalignment causes vibration. Clearance grades address operational conditions—C3 clearance suits applications with temperature fluctuations, preventing seizure, while C0 is ideal for tight tolerance assemblies. The closed design protects rolling elements from contaminants, a key advantage in dusty manufacturing environments where particle ingress shortens bearing life.
Why Cutting Corners on Bearings Costs More in the Long Run
Choosing low-quality needle roller bearings may save upfront costs, but the hidden expenses add up quickly. A single bearing failure in a production line can halt operations for days, costing far more than the price of a premium bearing. Our bearings, backed by ISO9001 certification and rigorous QC testing, minimize this risk. Each unit undergoes dimensional checks and load testing before shipment, ensuring compliance with global industry standards. For industrial machinery makers, the reliability of these Precision Needle Roller Bearing Mountings translates to fewer warranty claims and higher customer satisfaction.
Your Trusted Partner for Bearing Solutions Since 2005
Jinan Saifan Bearing has served global buyers across Europe, America, and Southeast Asia for over 18 years, building a reputation for stable supply and quality. Our in-house R&D and QC lab ensure every bearing meets design specifications, while OEM/ODM capabilities allow customization for unique machinery requirements. We stand behind our products with a 12-month global warranty, offering free technical guidance and defect replacement. With production capacity exceeding 1,000,000 units annually, we maintain stock levels to fulfill both small emergency orders and large-scale production needs.
Packaging & Shipping
- Secure carton packaging with pallet reinforcement for bulk orders, ensuring damage-free transit
- 3–7 days delivery for standard models, with expedited options available for urgent requirements
- Flexible shipping via DHL, FedEx, UPS, air freight, or sea freight to match your timeline and budget
- Real-time tracking provided for all shipments, keeping you informed of delivery status
- 1pc minimum order quantity, supporting emergency repairs and small-batch trials
Get Your Machinery Back to Full Operation
Don’t let bearing issues slow down your production. Whether you need Nav4920 for an urgent repair or want to stock Nav4916, Nav4918, Nav4919, or Nav4922 for future maintenance, we have the inventory and expertise to help. Send us your bearing model, equipment details, and quantity—our team will confirm compatibility and provide a quote within 24 hours.
Frequently Asked Questions
Q: Are these needle roller bearing mountings genuine and traceable?
A: Yes, all our bearings are manufactured in-house under ISO9001 standards, with full traceability from raw material to finished product. We provide batch test reports upon request.
Q: How do I ensure the bearing model fits my machinery?
A: Provide your equipment model, shaft diameter, housing bore, and operating conditions (load, speed, temperature), and our technical team will verify compatibility or recommend alternatives.
Q: What is your warranty policy for these bearings?
A: We offer a 12-month global warranty against manufacturing defects. If a bearing fails under normal operating conditions, we provide free replacement or refund.
Q: What is the minimum order quantity for standard models?
A: We accept 1pc MOQ for standard needle roller bearing mountings, ideal for emergency repairs or small-scale testing.
Q: How quickly can you ship after payment?
A: Standard models are shipped within 3–7 days of payment confirmation. For urgent orders, contact us for expedited processing options.
Q: Can you provide custom bearing mountings for unique applications?
A: Yes, we offer full OEM/ODM services, including custom dimensions, materials, and precision grades. Contact our sales team with your specifications for a tailored solution.
