Skf 3309 a Angular Contact Ball Bearing 45mm Bore 100mm Od

Product Description

The SKF 3309 A is a double-row angular contact ball bearing designed to handle combined radial and axial loads simultaneously. Built with a 30-degree contact angle, it supports a static load capacity of 53,000 pounds and a dynamic load capacity of 72,800 pounds, making it well suited for demanding industrial shaft and spindle applications. The open-style design uses a steel cage and a round bore, with no snap ring or flange. Licensed bearing technicians and industrial maintenance mechanics install this bearing in rotating equipment where thrust and radial forces act together.

This bearing is applied in industrial machinery including pumps, compressors, gearboxes, and electric motor shafts where bi-directional or combined axial-radial loading is a design requirement. The double-row configuration provides greater load distribution than a single-row bearing in the same axial space, making it a practical choice when rigidity and load sharing are priorities. It is rated at a maximum of 6,300 RPM and carries an ABEC-3 precision rating, appropriate for general industrial service.

Key Features

• Double-row angular contact design handles combined radial and axial loads
• 30-degree contact angle suited for moderate-to-high axial thrust applications
• 72,800 lb dynamic load capacity and 53,000 lb static load capacity
• Maximum speed rating of 6,300 RPM
• ABEC-3 precision rating for general industrial service
• Open style with steel cage - no seals, no flange, no snap ring

Compatibility

Designed as an OEM-style double-row angular contact ball bearing replacement for industrial rotating equipment requiring a 45 mm bore, 100 mm outside diameter, and 39.70 mm width in the 3309 A series.

Installation Notes

Installation should be performed by a qualified industrial mechanic or bearing technician. Disconnect and lock out all power to the machine before removing the existing bearing. Use a bearing press or appropriate pulling and seating tools - never drive a bearing into position by striking the outer or inner race directly. Inspect shaft and housing fits for proper tolerance before pressing the new bearing into place.