Browning 767308 4-bolt Flange Bearing 1-1/4 Inch Bore

Product Description

The BROWNING 767308 is a cast iron 4-bolt flange bearing unit in the VF4E 100 series, designed to support rotating shaft assemblies in industrial and mechanical drive applications. The unit features a 1-1/4 inch bore with an eccentric lock for secure shaft engagement, a ball bearing insert made from 52100 steel, and a rated maximum speed of 2,500 RPM. Static load capacity is 3,493 pounds and dynamic load capacity is 5,782 pounds, making it well suited for moderate-to-heavy radial load conditions. Lubrication is required for proper service life. Licensed HVAC, mechanical, and industrial service technicians routinely specify this unit in belt-driven blower and fan shaft assemblies.

This flange bearing unit is appropriate for use in industrial machinery, HVAC belt-drive systems, conveyor equipment, and other rotating shaft applications where a rigid, 4-bolt flange mount provides the necessary support and alignment. The 4-bolt pattern and cast iron housing deliver a stable, vibration-resistant mount suitable for both indoor and sheltered mechanical rooms. Overall dimensions of 4-5/8 inches length by 4-5/8 inches height allow straightforward integration into standard flange bearing footprints. The 3-5/8 inch distance between mounting hole centers and 1/2 inch bolt size are consistent with common industrial mounting standards.

Key Features

• 1-1/4 inch bore with eccentric lock for positive shaft retention
• 52100 steel ball bearing insert rated to 2,500 RPM maximum
• Static load capacity: 3,493 pounds; dynamic load capacity: 5,782 pounds
• Cast iron housing for durability and vibration resistance
• 4-bolt flange mount with 3-5/8 inch center-to-center bolt spacing and 1/2 inch bolt size
• Requires periodic lubrication for extended service life

Compatibility

Designed as an OEM-style replacement or new-installation 4-bolt flange bearing unit for rotating shaft assemblies requiring a 1-1/4 inch bore and standard 4-bolt flange mounting pattern in the VF4E 100 series.

Installation Notes

Installation is typically performed by millwrights, industrial mechanics, or HVAC technicians experienced with belt-drive and shaft-mount systems. Shut down and lock out all power to the driven equipment before removing or installing the bearing unit. Ensure the shaft is clean and within dimensional tolerance before engaging the eccentric lock collar. Apply appropriate grease through the lubrication fitting before initial startup and at intervals specified for the operating load and speed.