Product Specifications
| Parameter | Details |
|---|
| Model NO. | Double Row Cylindrical Roller Bearing |
| Outer Dimension | Medium and Large(120-190mm) |
| Material | Bearing Steel |
| Spherical | Non-Aligning Bearings |
| Load Direction | Axial Bearing |
| Separated | Separated |
| Clearance | C0 C2 C3 C4 C5 |
| Cage | Brass, Steel |
| Vibration | Z1V1 Z2V2 Z3V3 |
| Hardness | 60-64 HRC |
| Trademark | zhaoyun |
| Origin | Jiangsu China |
| HS Code | 8482800000 |
Application Industries
| Industry | Typical Equipment |
|---|
| Manufacturing | Air Compressors, Industrial Pumps, Gearboxes |
| Energy & Power | Rotary Compressors, Turbomachinery |
| Heavy Machinery | Hydraulic Presses, Material Handling Equipment |
End Air Compressor Downtime with High Load NUP Series Bearings
Air compressor operators know the cost of unexpected downtime—production delays, missed deadlines, and inflated maintenance bills. Many face frequent bearing failures due to inadequate load capacity or poor material quality, especially in high-pressure applications. Sourcing reliable NUP311 and NUP312 bearings often means coordinating with multiple suppliers, each with varying lead times and quality standards.
Double Row Cylindrical Roller Bearings Engineered for Air Compressors
Our Double Row Cylindrical Roller Bearings NUP311 and NUP312 address these challenges directly. Designed specifically for air compressors, these bearings deliver high load capacity with 60-64 HRC hardness, ensuring durability under continuous operation. As an official SKF solution provider, we maintain full-process quality control compliant with global standards, so you get bearings that meet exact specifications without the hassle of multi-supplier coordination.
Optimal Performance in High-Pressure Environments
These NUP series bearings excel in air compressors where radial and axial loads combine with high rotational speeds. The separated design allows for easy mounting and dismounting, simplifying maintenance, while the non-aligning configuration ensures stability in precision assemblies. Whether in reciprocating or rotary compressors, their robust construction handles the constant stress of compressed air systems, reducing the risk of premature failure.
Key Technical Features That Maximize Reliability
The 60-64 HRC hardness rating of the bearing steel provides exceptional wear resistance, critical for air compressors operating in dusty or humid environments. Available clearance grades (C0 C2 C3 C4 C5) allow customization to specific operating conditions—tighter clearances for precision applications, larger clearances for thermal expansion in high-temperature settings. Brass and steel cage options further optimize performance: brass cages offer superior strength for heavy loads, while steel cages provide cost-effective durability in standard operations. Vibration classes Z1V1 to Z3V3 ensure smooth operation, minimizing noise and extending equipment life.
Why Genuine Bearings Lower Total Cost of Ownership
Choosing authentic high load capacity bearings avoids the hidden costs of counterfeit products. Inferior bearings may fail within months, leading to unplanned shutdowns, replacement parts, and labor expenses that far exceed initial savings. Our bearings, backed by SKF global standards, undergo rigorous testing to ensure consistent performance. By reducing downtime and extending service intervals, they lower long-term operational costs—a critical advantage for equipment OEMs and maintenance departments managing tight budgets.
Your Trusted Partner for Industrial Bearings
With official full-category authorization from SKF, we guarantee genuine products traceable to the original supply chain. Our sealing and lubrication engineering team provides expert support for选型 and application, ensuring you get the right bearing for your air compressor. Serving over 900 clients across 50+ countries, we offer one-stop system procurement, eliminating the need for multiple suppliers. Emergency maintenance delivery ensures you receive critical parts fast, minimizing production disruptions. Every bearing undergoes pre-shipment inspection, so you can trust in consistent quality with every order.
Packaging & Shipping
- Carton pallet packaging with protective cushioning to prevent damage during transit
- Priority delivery available for urgent maintenance needs
- Global shipping via DHL, FedEx, UPS, air, or sea freight as required
- Full logistics tracking provided from warehouse to delivery
- Minimum order quantity of 1 piece, ideal for small-batch or emergency purchases
Get Your NUP311 and NUP312 Bearings Today
Don’t let bearing failures disrupt your air compressor operations. Send us your exact bearing requirements—model, quantity, and application details—and our team will provide a unified quotation within one working day. With fast emergency delivery and expert technical support, we help you get back to full production quickly.
Frequently Asked Questions
Q: Are these bearings genuine SKF products?
A: As an official SKF solution provider, we offer genuine SKF products with full traceability. We can provide authorization documents upon request to verify authenticity.
Q: How do I confirm if the NUP311/NUP312 is suitable for my air compressor?
A: Provide your air compressor model, operating speed, and load conditions. Our technical team will review and confirm compatibility at no cost.
Q: What is the warranty policy for these bearings?
A: All bearings come with SKF’s standard warranty, covering manufacturing defects. We offer unconditional replacement for products that fail due to material or production issues.
Q: What is the minimum order quantity?
A: We accept orders for 1 piece, supporting both emergency repairs and small-scale procurement needs.
Q: How long does shipping take?
A: In-stock bearings ship within 3-7 working days. For urgent orders, we offer expedited delivery options.
Q: How can I verify the authenticity of the bearings?
A: Each bearing includes SKF’s standard marking and packaging. We provide full documentation, including batch numbers and certificates, for traceability verification.
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