High Precision Cylindrical Roller Bearing SKF N309EM N310EM N311EM for CNC Machine Tools

Product Specifications

Application Industries

Eliminate CNC Downtime with Genuine SKF High Precision Cylindrical Roller Bearings

CNC machine operators know the cost of unexpected spindle failure—hours of production loss, missed deadlines, and expensive repairs. Many turn to uncertified suppliers for quick fixes, only to face premature bearing failure caused by substandard materials or poor manufacturing. Sourcing multiple bearing brands from different suppliers further complicates procurement, with inconsistent quality standards and delivery delays disrupting maintenance schedules.

Authentic SKF Bearings, Ready for Immediate Shipment

Our High Precision Cylindrical Roller Bearings SKF N309EM, N310EM, and N311EM solve these challenges by combining genuine SKF quality with rapid availability. As an officially authorized SKF distributor, we maintain sufficient ready stock of P4/P2 precision grade bearings, ensuring your CNC machine tools get the exact replacement parts they need without unnecessary delays. Each bearing undergoes standardized precision testing before shipment, guaranteeing compliance with ISO 9001 and DIN standards from factory to your facility.

Engineered for CNC Machine Tool Performance

These SKF cylindrical roller bearings excel in high-precision industrial scenarios like CNC machine tool spindles, where radial load capacity and rotational accuracy are critical. The separated inner and outer rings allow for easy mounting and dismounting during maintenance, while the open design facilitates lubrication customization to match specific operating conditions. Whether your equipment runs at high speeds or handles heavy radial loads, these bearings deliver consistent performance under demanding manufacturing environments.

Technical Features That Maximize Machine Uptime

The precision rating options (P0 to P2) ensure you select the exact tolerance level for your application—P2 grade for ultra-precise spindles requiring minimal runout, or P0 for general-purpose machining centers. Constructed from high-quality bearing steel, these bearings offer excellent fatigue resistance, extending service life even under continuous operation. The single-row design balances load capacity with compact dimensions, making them ideal for CNC machines where space constraints require optimized component sizing. Each bearing's 45x100x25mm specification ensures compatibility with common spindle designs, reducing the need for custom modifications during installation.

Avoid Hidden Costs of Counterfeit Bearings

Opting for unauthorized bearings may seem cost-effective initially, but the hidden expenses add up quickly. Counterfeit bearings often fail prematurely due to inferior materials, leading to unplanned downtime that costs manufacturers an average of $22,000 per hour in lost production. Genuine SKF bearings, by contrast, provide predictable performance and longer service intervals, lowering total cost of ownership through reduced maintenance and fewer replacements. Our full-process quality traceability ensures every bearing can be authenticated, protecting your equipment from the risks of substandard components.

Why 800+ Global Clients Trust Our Bearing Solutions

Packaging & Shipping

• Original SKF packaging with product authentication labels and batch traceability documentation
• Carton and pallet packaging options to suit order size and transportation requirements
• Package Size: 12.00cm × 12.00cm × 4.50cm per unit
• Package Gross Weight: 0.990kg per unit
• Express delivery via DHL, FedEx, or UPS with real-time logistics tracking
• 1 unit minimum order quantity, supporting both emergency repairs and scheduled maintenance

Get Your CNC Machine Back to Work—Fast

Every minute your CNC machine sits idle impacts your bottom line. With our ready stock of genuine SKF N309EM, N310EM, and N311EM bearings, you can minimize downtime and restore production quickly. Simply provide your bearing型号, application details, and required quantity, and our team will deliver a unified quotation with technical verification within one working day.

Frequently Asked Questions