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 |
| HS Code |
8482800000 |
Application Industries
| Industry |
Typical Equipment |
| Construction Machinery |
Excavators, Loaders, Bulldozers, Cranes |
| Industrial Machinery |
Reduction Gearboxes, Heavy-Duty Transmissions, Press Machines |
Minimize Downtime with NNU4934 B/Sp W33 Double Row Cylindrical Roller Bearing for Construction Machinery
Construction machinery operators know the frustration of unexpected downtime caused by bearing failures. When a critical component like a double row cylindrical roller bearing fails prematurely, it halts projects, increases labor costs, and delays deadlines. Sourcing reliable low noise bearings that can withstand heavy loads and harsh working conditions often means navigating complex supply chains with high minimum order quantities and long lead times.
Engineered for Heavy-Duty Construction Applications
The NNU4934 B/Sp W33 Double Row Cylindrical Roller Bearing addresses these challenges with precision manufacturing and industry-proven performance. As a professional bearing manufacturer with decades of experience, we produce this bearing to meet Z2-Z3-Z4 noise grades and P0-P4 precision standards, ensuring it operates quietly even in high-torque applications. The separated design allows for easy installation and maintenance, a critical advantage in field service scenarios where time is valuable.
Optimized Performance in Demanding Conditions
This construction machinery bearing excels in applications requiring high radial load capacity and moderate axial load handling. Its robust bearing steel construction, with hardness rated at 60-64 HRC, provides exceptional wear resistance—essential for equipment operating in dusty, vibrating environments common to construction sites. The brass or steel cage options further enhance durability, maintaining roller alignment and load distribution under continuous heavy stress.
Technical Features That Maximize Equipment Uptime
Key technical attributes of this low noise bearing directly impact operational efficiency. The clearance options (C0 to C5) allow customization for specific operating conditions: tighter clearances (C2) for precision applications, while looser clearances (C4-C5) accommodate thermal expansion in high-temperature environments. Vibration grades Z1V1 to Z3V3 ensure smooth operation, reducing noise pollution on job sites and minimizing wear on adjacent components. The medium and large outer dimension (120-190mm) positions it as a critical component in mid-size to large construction machinery drivetrains.
Why Compromising on Bearing Quality Costs More
Choosing inferior double row cylindrical roller bearings may seem cost-effective initially, but the hidden expenses add up quickly. Counterfeit or low-quality bearings often fail within months, leading to emergency repairs, replacement parts, and lost productivity. Our NNU4934 B/Sp W33 bearing, produced under ISO 9001:2015 quality management systems, delivers consistent performance with a 12-month warranty. Meeting international standards (ISO, ABMA, DIN) ensures compatibility with original equipment specifications, reducing the risk of premature failure and unplanned downtime.
Our Commitment to Reliable Supply
With a production capacity of 1,000,000 units annually, we maintain flexible order policies to support your needs: 1 piece MOQ for standard bearings, sample orders without MOQ, and negotiable quantities for custom requirements. Our efficient delivery system ensures sample orders ship within 3-5 working days and bulk orders within 5-15 working days. Backed by a professional technical team, we offer free guidance on bearing selection, installation, and maintenance to optimize performance and extend service life. As a high-tech enterprise certified with ISO 14001 environmental management system, we prioritize sustainable manufacturing practices without compromising quality.
Packaging & Shipping
- Carton pallet packaging for secure transportation and storage
- 3-5 working days for sample orders, 5-15 working days for bulk orders
- Multiple logistics options including express, air, and sea freight
- Real-time shipment tracking provided upon dispatch
- 1 piece minimum order quantity for standard bearings
Get Your Construction Machinery Bearings Today
Don’t let bearing issues slow down your projects. Whether you need a single replacement bearing or bulk quantities for your production line, we ensure timely delivery of high-quality NNU4934 B/Sp W33 bearings. Send us your requirements now to get a quote and keep your machinery operating at peak efficiency.
Frequently Asked Questions
Q: Are these bearings genuine and traceable?
A: Yes, all our bearings are manufactured in-house under strict quality control and can be traced through our production records. We are certified with ISO 9001:2015, ensuring compliance with international quality standards.
Q: How do I confirm if this bearing fits my equipment?
A: Provide your equipment model, application details, and required specifications. Our technical team will verify compatibility and offer free selection guidance to ensure optimal performance.
Q: What is the warranty policy for this bearing?
A: We offer a 12-month warranty from the date of delivery. Qualified defective products are eligible for free replacement or refund according to our after-sales service terms.
Q: What is the minimum order quantity?
A: The minimum order quantity for standard bearings is 1 piece. For customized orders, quantity can be negotiated based on specific requirements.
Q: How long does shipping take?
A: Sample orders are delivered within 3-5 working days, while bulk orders typically ship within 5-15 working days. Logistics options include DHL, FedEx, UPS, air, and sea freight.
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