Browning 766238 4-bolt Flange Bearing 1-15/16 in Bore

Product Description

The BROWNING 766238 is a 4-bolt flange bearing unit designed for industrial and mechanical drive applications requiring a secure, rigid housing mount. Built with a cast iron housing and a 52100 steel insert, this unit accepts a 1-15/16 inch bore shaft and uses a concentric collar lock to fix the bearing to the shaft without keyways or set screws. The static load capacity is 5,216 pounds and the dynamic load capacity is 7,889 pounds, making it well-suited for moderate-to-heavy radial load environments. Millwrights, maintenance mechanics, and industrial service technicians install this type of unit in conveyor systems, fan shafts, pump drives, and general power transmission equipment.

This flange bearing unit is used in applications where the bearing housing must be bolted to a flat mounting surface with four fasteners for maximum stability. The 4-bolt pattern with 4-3/8 inch distance between mounting hole centers provides a wide footprint to resist torque and vibration. The unit is suited for both new installations and direct replacement of worn or failed flange units in industrial, agricultural, and HVAC fan-drive assemblies. The 9/16 inch bolt size aligns with standard hardware commonly found in heavy-duty mechanical installations.

Key Features

• 1-15/16 inch bore ID with concentric collar lock for tool-free shaft alignment and secure grip
• 5,216 lb static load capacity and 7,889 lb dynamic load capacity for demanding radial load service
• Cast iron housing provides rigidity and resistance to shock loads
• 52100 steel bearing insert for high strength and wear resistance
• 4-bolt mounting pattern with 4-3/8 inch center-to-center spacing for stable, low-vibration installation
• Overall dimensions of 5-5/8 inches length by 5-5/8 inches height to suit standard mounting envelopes

Compatibility

Designed as an OEM-style replacement or new-installation flange bearing unit for industrial power transmission shafts with a 1-15/16 inch diameter. Suitable for conveyor, fan, pump, and general drive-shaft applications requiring a 4-bolt cast iron flange mount.

Installation Notes

Installation should be performed by a qualified millwright or maintenance technician. De-energize and lock out the drive system before removing or installing any bearing unit. Ensure the mounting surface is flat and clean before torquing fasteners to prevent housing distortion. Verify shaft diameter and finish before engaging the concentric collar lock, and follow the bearing manufacturer's collar-tightening sequence to ensure even clamping force.