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 |
Excavators, Crushers, Conveyors, Mining Drills |
| Heavy Machinery |
Industrial Gearboxes, Rolling Mills, Press Machines |
Reduce Downtime in Mining Operations with Heavy Load Double Row Cylindrical Roller Bearing NNU4930 B/SP C3 W33
Mining operations face severe challenges with equipment failures, often caused by substandard bearings that can’t withstand heavy loads and harsh conditions. Frequent replacements lead to unplanned downtime, increased maintenance costs, and disrupted production schedules. Sourcing reliable heavy load bearings that meet mining industry demands for durability and performance remains a critical pain point for many operators.
Engineered for Mining’s Toughest Conditions
Our Heavy Load Double Row Cylindrical Roller Bearing NNU4930 B/SP C3 W33 is specifically designed to address these challenges. As a professional bearing manufacturer with decades of industry experience, we produce high-standard bearings from P0 to P4 precision grade and Z2/Z3/Z4 noise grade, ensuring this mining bearing delivers stable performance in heavy-duty applications. The separated design allows for easy installation and maintenance, a key advantage in mining equipment where accessibility is often limited.
Optimal Performance in Heavy-Duty Mining Environments
This double row cylindrical roller bearing excels in environments with high radial loads and moderate axial loads, common in mining machinery such as crushers and conveyors. The W33 designation indicates a lubrication groove and three lubrication holes in the outer ring, ensuring efficient lubrication even in dusty, high-vibration conditions. With a hardness of 60-64 HRC, the bearing maintains structural integrity under extreme pressure, reducing the risk of premature failure.
Technical Features That Enhance Mining Equipment Reliability
The C3 clearance of this heavy duty cylindrical roller bearing provides additional space to accommodate thermal expansion and misalignment, critical in mining operations where temperature fluctuations and shaft deflection are common. The brass or steel cage options offer durability and stability, with brass cages providing better heat dissipation for continuous operation. Vibration grades up to Z3V3 ensure smooth operation, minimizing noise and reducing stress on connected components. These technical details work together to extend bearing service life and reduce maintenance intervals.
Why Compromising on Bearing Quality Costs More in Mining
Using inferior mining bearings may seem cost-effective initially, but the hidden costs quickly add up. Early bearing failure in mining equipment can lead to extended downtime, expensive repairs, and potential safety hazards. Our Heavy Load Double Row Cylindrical Roller Bearing NNU4930 B/SP C3 W33 is manufactured using high-grade chrome steel and premium raw materials, adhering to ISO international industrial standards. This commitment to quality ensures consistent performance, reducing the total cost of ownership by minimizing replacements and maximizing equipment uptime.
Our Commitment to Mining Industry Reliability
With ISO 9001:2015 Quality Management System and ISO 14001 Environmental Management System certifications, we maintain strict quality control throughout the production process. Our in-house laboratory conducts dimensional detection, noise & vibration tests, and service life experiments to ensure every bearing meets our high standards. We offer flexible order policies, including 1 piece MOQ for standard bearings, and efficient delivery with 3-5 working days for sample orders and 5-15 working days for bulk orders. Our professional technical team provides free guidance on bearing selection, installation, and maintenance, offering remote troubleshooting support to keep your mining operations running smoothly.
Packaging & Shipping
- Carton Pallet packaging for secure transportation
- Sample orders delivered within 3-5 working days
- Bulk orders shipped within 5-15 working days
- Multiple logistics options available to meet your delivery requirements
- 1 piece MOQ for standard bearings, supporting emergency maintenance needs
Ensure Uninterrupted Mining Operations with Reliable Bearings
Don’t let bearing failures disrupt your mining production. Our Heavy Load Double Row Cylindrical Roller Bearing NNU4930 B/SP C3 W33 is engineered to withstand the toughest mining conditions, providing the reliability and performance you need. Contact us today with your equipment details and quantity requirements to get started.
Frequently Asked Questions
Q: Is this bearing suitable for heavy-duty mining equipment?
A: Yes, this Heavy Load Double Row Cylindrical Roller Bearing is specifically designed for mining industry applications, capable of handling high radial loads and harsh operating conditions.
Q: How do I confirm if this bearing fits my mining machinery?
A: Provide your equipment model, shaft diameter, and load requirements, and our technical team will verify compatibility and provide free选型 guidance.
Q: What is the warranty period for this bearing?
A: We offer an official 12-month warranty from the date customers receive the goods, covering manufacturing defects.
Q: What is the minimum order quantity for this bearing?
A: We accept 1 piece MOQ for standard bearings, supporting both emergency repairs and small-batch purchases.
Q: How long does it take to receive an order?
A: Sample orders are delivered within 3-5 working days, while bulk orders typically ship within 5-15 working days, depending on quantity.
Q: How is the bearing quality ensured?
A: All products undergo strict incoming raw material inspection, full-process production supervision, and finished product inspection. We also conduct comprehensive performance tests in our in-house laboratory to meet ISO standards.
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