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 |
| Transport Package |
Carton Pallet |
| Specification |
As Your Request |
| Origin |
Jiangsu China |
| HS Code |
8482800000 |
Application Industries
| Industry |
Typical Equipment |
| Mining |
Crushers, Conveyors, Mining Drills, Load Haul Dump Machines |
| Construction Machinery |
Excavators, Bulldozers, Concrete Mixers, Heavy Duty Cranes |
Reduce Mining Downtime with Heavy Load Double Row Cylindrical Roller Bearings NNU4930 NNU4932 NNU4934
Mining operations lose thousands in revenue hourly when crushers or conveyors fail due to bearing issues. Many buyers struggle with sourcing reliable heavy load bearings that withstand constant axial loads and harsh dust conditions. Coordinating multiple suppliers for different bearing types often delays maintenance, extending equipment downtime.
Multi-Brand Mining Bearing Solutions in Stock
As an official distributor of SKF & Timken, we provide NNU4930, NNU4932, and NNU4934 double row cylindrical roller bearings designed for mining machinery. Our large centralized inventory ensures these heavy load bearings are available for immediate shipment, eliminating long lead times. Each unit undergoes ISO 9001 quality inspection before delivery, ensuring compatibility with your existing equipment.
Engineered for Mining’s Toughest Conditions
This mining bearing series excels in high-load applications with axial forces up to 200 kN, common in jaw crushers and conveyor drives. The separated inner and outer rings allow easy installation and replacement, critical during emergency maintenance. With a hardness of 60-64 HRC, the bearing steel construction resists wear from abrasive mining dust, maintaining performance in temperatures ranging from -30°C to 120°C.
Key Technical Features for Reliable Performance
The double row cylindrical roller design provides superior radial load capacity while accommodating axial displacement. Available clearance grades (C0 to C5) allow customization for specific operating conditions—C3 and C4 clearances are recommended for high-temperature mining applications to prevent seizure. Brass or steel cages ensure stable roller guidance at moderate speeds, reducing vibration levels (Z1V1 to Z3V3) for quieter operation and extended bearing life.
Why Genuine Bearings Lower Total Mining Costs
Counterfeit mining bearings often fail within 3-6 months, requiring repeated replacements and unplanned downtime. Genuine double row cylindrical roller bearings from authorized distributors typically last 2-3 times longer, reducing maintenance frequency and labor costs. Our unified quality certification ensures consistent performance across all brands, eliminating compatibility issues that cause premature equipment failure.
Your Trusted Mining Bearing Partner Since 2010
We serve over 1,200 clients across 55+ countries, including major mining EPC teams in Australia and South Africa. Our cross-brand technical team provides free model matching, ensuring you get the right heavy load bearing for your equipment. With 10+ years of industry experience, we offer one-stop mixed procurement—order NNU series bearings alongside seals and lubrication systems from a single supplier, streamlining your supply chain.
Packaging & Shipping
- Industrial-grade carton packaging with pallet reinforcement for secure transport
- 现货 available for delivery within 3-7 business days
- Global logistics options including DHL, FedEx, and sea freight for bulk orders
- Real-time tracking number provided once shipment is dispatched
- Minimum order quantity of 1 unit, ideal for emergency repairs
Get Your Mining Bearings Shipped Today
Every hour of downtime in mining operations costs thousands in lost production. Send us your bearing型号, equipment details, and quantity now—our team will confirm compatibility and provide a quote within 24 hours. With our large inventory, your NNU4930, NNU4932, or NNU4934 bearing can be on its way tomorrow.
Frequently Asked Questions
Q: Are these genuine original bearings?
A: Yes, as an official authorized distributor of SKF & Timken, all our products are sourced directly from manufacturers and come with complete traceability documentation.
Q: How do I confirm the right bearing model for my crusher?
A: Provide your equipment make, model, and operating conditions (load, speed, temperature), and our technical team will verify the correct NNU series bearing for your application.
Q: What is your warranty policy?
A: We offer manufacturer-backed warranties covering material and manufacturing defects. Defective bearings will be replaced at no cost within the warranty period.
Q: What is the minimum order quantity?
A: We accept orders for 1 unit, supporting emergency maintenance requirements for mining operations.
Q: How long does shipping take to Australia?
A: Standard air freight to Australia takes 5-7 business days; express options are available for urgent orders.
Q: How can I verify the authenticity of the bearings?
A: Each bearing includes original packaging with manufacturer-specific holographic labels. We also provide certificate of origin and batch test reports upon request.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
