Double Row Cylindrical Roller Bearing NNU4921 B/Sp W33 with Brass Steel Cage for Heavy Duty Machinery

Product Specifications

Application Industries

Prevent Costly Downtime with NNU4921 B/Sp W33 Double Row Cylindrical Roller Bearing

Industrial operations lose thousands in production every hour when machinery fails due to substandard bearings. Many buyers struggle with long lead times for heavy-duty bearings, inconsistent quality across suppliers, and the risk of counterfeit products that fail prematurely under high loads. For maintenance teams needing urgent replacements, these challenges can extend downtime from days to weeks.

Premium Double Row Cylindrical Roller Bearing Ready for Immediate Shipment

Our NNU4921 B/Sp W33 Double Row Cylindrical Roller Bearing with brass steel cage addresses these pain points directly. As an official European bearing distributor with ISO 9001 and DIN compliant inspection systems, we maintain sufficient stock of precision bearings to support quick turnaround for emergency repairs. The separated design allows easy installation and replacement, critical for minimizing machinery downtime in heavy duty applications.

Engineered for Heavy Duty Machinery Performance

This Double Row Cylindrical Roller Bearing excels in applications involving high radial loads and moderate axial loads, typical in heavy duty machinery. Its non-aligning design ensures stability under continuous operation, while the brass steel cage provides enhanced durability and heat resistance. With outer dimensions in the medium and large range (120-190mm), it’s specifically engineered to meet the demands of industrial equipment operating under extreme conditions.

Technical Features That Ensure Reliable Operation

The bearing’s 60-64 HRC hardness rating ensures excellent wear resistance, extending service life even in high-load environments. Available clearance options (C0 C2 C3 C4 C5) allow precise matching to specific application requirements, optimizing performance and reducing vibration. Vibration grades Z1V1 to Z3V3 provide flexibility for noise-sensitive operations. The separated design simplifies maintenance, allowing for easy inspection and replacement without full disassembly of equipment.

Why Genuine Bearings Matter for Total Cost of Ownership

Counterfeit bearings may offer lower upfront costs but often result in hidden expenses: premature failures, increased maintenance, and unplanned downtime. Our Heavy Duty Machinery Bearing meets strict quality standards, with each unit undergoing precision testing before shipment. The brass steel cage ensures consistent performance under high temperatures, reducing the risk of sudden failure compared to inferior alternatives. By investing in genuine bearings, operations reduce long-term costs associated with frequent replacements and production losses.

Your Trusted Partner for High-Precision Bearings

Packaging & Shipping

• Carton pallet packaging designed for secure transportation
• Stock availability ensures prompt delivery for urgent requirements
• Multiple logistics options including express, air, and sea freight
• Full shipment tracking provided from dispatch to delivery
• Flexible order quantities, supporting both emergency repairs and bulk purchases

Get Your NNU4921 Bearing Shipped Today

Don’t let bearing issues disrupt your operations. Send us your NNU4921 B/Sp W33 bearing requirements with application details, and our team will provide a quotation within one working day. With our ready stock and efficient logistics, you can minimize downtime and get your machinery back to full operation quickly.

Frequently Asked Questions