Browning 767898 4-bolt Flange Bearing 1-3/4 in Id Cast Iron

Product Description

The BROWNING 767898 is a 4-bolt flange bearing unit designed to support rotating shafts in industrial and mechanical drive applications. It accepts a 1-3/4 inch shaft bore and uses an eccentric lock collar to secure the shaft without keyways. The cast iron housing provides rigid support and resists deformation under load. The unit carries a static load capacity of 5,139 pounds and a dynamic load capacity of 7,901 pounds, making it well suited for moderate-to-heavy duty conveyor, fan, and shaft-support installations. The 52100 steel insert provides hardness and wear resistance in the bearing race. Licensed mechanics, millwrights, and HVAC drive technicians are the typical installers.

This flange bearing fits shaft-mounted applications where a 4-bolt cast iron unit is required for secure, fixed positioning. The 4-1/8 inch distance between mounting hole centers and 9/16 inch bolt size align with standard industrial frame and baseplate layouts. Overall dimensions of 5-3/8 inches in length and 5-3/8 inches in height, combined with a 4-3/8 inch hub diameter and 2-5/16 inch width, suit belt-driven fan assemblies, blower shafts, conveyor head and tail pulleys, and general power transmission equipment in both commercial and light industrial settings.

Key Features

• 1-3/4 inch bore accepts standard shaft sizes without additional machining
• Eccentric lock collar secures shaft without requiring a keyed shaft
• 5,139 pound static load capacity and 7,901 pound dynamic load capacity for demanding drive applications
• Cast iron housing resists deflection and mechanical shock in fixed-mount installations
• 52100 steel insert for long service life and consistent bearing performance
• 4-bolt pattern with 9/16 inch bolt size for positive, low-vibration mounting

Compatibility

Designed as an OEM-style replacement or direct installation 4-bolt flange bearing for industrial shaft applications requiring a 1-3/4 inch bore, 4-bolt cast iron housing, and eccentric locking collar.

Installation Notes

Installation is typically performed by a millwright or qualified mechanical technician. De-energize and lock out all drive equipment before removing or installing any bearing unit. Confirm mounting surface is flat and fastener holes are aligned before torquing bolts to prevent housing distortion. Seat the eccentric lock collar in the direction of shaft rotation and tighten the set screw only after the unit is fully bolted down.