Browning 767475 4-bolt Flange Bearing 1-7/16 in Bore

Product Description

The BROWNING 767475 is a VF4S-223 four-bolt flange bearing unit designed for shaft support in industrial and mechanical power transmission applications. The unit features a 1-7/16 inch bore with a set screw lock and is housed in a cast iron flange body. It carries a static load capacity of 3,493 pounds and a dynamic load capacity of 5,782 pounds, making it suitable for moderate-to-heavy radial load conditions. The 52100 steel ball insert provides durable rolling contact performance. Lubrication is required during installation and as part of a routine maintenance schedule. HVAC technicians, millwrights, and mechanical contractors typically install this type of bearing unit on fan shafts, blower assemblies, and conveyor drives.

This four-bolt flange bearing is suited for use in commercial HVAC fan systems, industrial blower drives, and general mechanical equipment where a rigid, four-point mounting is required. The square flange pattern with a 3-5/8 inch bolt hole center-to-center spacing allows for stable mounting on fabricated steel or cast bases. Overall dimensions of 4-5/8 inches length by 4-5/8 inches height make it a compact unit for its load rating. Maximum rated speed is 4,000 RPM, which covers most belt-driven fan and blower applications in commercial mechanical systems.

Key Features

• 1-7/16 inch bore with set screw locking for positive shaft retention
• Cast iron housing for rigidity and durability in industrial environments
• 52100 steel ball bearing insert rated to 4,000 RPM maximum
• 3,493 pound static load capacity and 5,782 pound dynamic load capacity
• Four-bolt square flange mount with 3-5/8 inch bolt hole centers and 1/2 inch bolt size
• Grease lubrication port required for proper maintenance

Compatibility

Designed as a VF4S 200 Series four-bolt flange bearing unit for shaft diameters of 1-7/16 inch. Suitable for belt-driven fan and blower assemblies requiring a rigid four-bolt flange mount with a set screw lock style insert.

Installation Notes

Installation is typically performed by a licensed millwright, mechanical contractor, or HVAC technician. De-energize and lock out all rotating equipment before handling or replacing bearing units. Ensure the mounting surface is flat and clean before torquing flange bolts, and verify shaft alignment before final tightening. Apply grease to the fitting prior to startup and follow a regular relubrication interval appropriate to the operating speed and load.