SKF NU 307 ECP/C3 35 mm ID Roller Bearing, 80 mm OD

This roller bearing provides cylindrical-bore support for rotating shafts in industrial machinery where radial load capacity and controlled internal clearance are required. It is a single-row, shielded roller element designed to operate at elevated speeds while maintaining smooth rotation and reduced contamination ingress in moderate environments.

• Shielded design reduces contaminant entry for longer service intervals
• Non-metallic cage lowers noise and vibration during operation
• C3 internal clearance compensates for thermal expansion under load
• Dynamic capacity of 75 kN supports continuous radial loading
• Limiting speed 11,000 r/min enables high-speed shaft operation
• Static capacity 63 kN resists shock and standstill loads

• Suitable for conveyor drive shafts in manufacturing plants
• Ideal for electric motor support at elevated rotational speeds
• Used with gearbox inputs requiring radial load bearing
• Can be used for pump shafts with moderate contamination risk
• Suitable for machine-tool spindles needing defined internal clearance

It fits a cylindrical shaft without an interference seat and requires end- or adaptor-type fixing for axial location.

The non-metallic cage tends to reduce wear-related noise and may permit longer inspection intervals where lubrication is maintained.

The increased internal clearance is intended to accommodate shaft and housing thermal growth while preventing excessive preload.

The stated 11,000 r/min is the limiting speed, designers should apply appropriate safety factors and consider lubrication and temperature when specifying operating speeds.