High-Precision SKF NNU4926BK/SPW33 Double-Row Cylindrical Roller Bearing for CNC Machine Tools

Product Specifications

Application Industries

Stop CNC Machine Downtime with Precision SKF NNU4926BK/SPW33 Bearings

CNC machine operators know the frustration of unexpected spindle failures—unplanned downtime eats into production schedules, while counterfeit bearings often fail prematurely under high-speed conditions. Sourcing genuine double row cylindrical roller bearings from multiple suppliers wastes valuable time, and inconsistent quality control raises risks for your equipment’s performance.

Genuine SKF Bearings, In Stock for Immediate Delivery

Our SKF NNU4926BK/SPW33 double row cylindrical roller bearing solves these challenges with 100% authentic products backed by official brand authorization. As a premium bearing distributor, we maintain sufficient ready stock of high-precision bearings, ensuring you get the exact component you need without long lead times. This bearing is specifically engineered for CNC machine tool applications, delivering reliable performance in critical spindle and gearbox operations.

Engineered for High-Precision CNC Operations

The NNU4926BK/SPW33 excels in high-speed rotational environments typical of CNC machining centers, where precision and stability are non-negotiable. Its double row cylindrical design provides exceptional radial load capacity, making it ideal for handling the continuous stresses of metal cutting and heavy-duty machining. Open seal construction ensures minimal friction at high speeds, while the robust structure maintains accuracy even under variable load conditions.

Technical Details That Define Performance

At the core of this bearing’s performance is its precision engineering. With an inner diameter of 130 mm, it fits standard CNC spindle configurations, ensuring seamless integration into existing setups. The double row roller arrangement distributes loads evenly across the bearing surface, reducing wear and extending service life. Open seals optimize heat dissipation—a critical factor in high-speed applications where temperature management directly impacts machining accuracy. Every unit undergoes standardized precision testing before shipment, ensuring compliance with ISO 9001 and DIN quality standards.

The Hidden Costs of Non-Genuine Bearings

Choosing non-genuine bearings may seem cost-effective initially, but the long-term consequences are significant. Counterfeit components often lack proper material heat treatment, leading to premature fatigue and sudden failures that can damage expensive CNC spindles. The resulting downtime, repair costs, and lost production far exceed the savings from cheaper alternatives. Our genuine SKF NNU4926BK/SPW33 bearing, backed by full lifecycle technical support, reduces total cost of ownership by minimizing unplanned maintenance and maximizing equipment uptime.

Why 800+ Global Clients Trust Our Bearings

Packaging & Shipping

• Original SKF packaging with protective inner casing to prevent damage during transit
• Standard package dimensions: 25.00cm × 25.00cm × 25.00cm
• Package gross weight: 0.300kg per unit
• Expedited delivery available for urgent maintenance requirements
• Real-time logistics tracking provided for all shipments
• Minimum order quantity: 1 piece, ideal for both scheduled maintenance and emergency repairs

Get Your CNC Bearings Delivered Fast

Don’t let bearing issues slow your production. Whether you need a single replacement or bulk order, our in-stock SKF NNU4926BK/SPW33 bearings are ready to ship. The sooner you secure genuine parts, the sooner your CNC machines return to optimal performance—reducing downtime and protecting your bottom line.

Frequently Asked Questions