Browning VF4S-328 4-Bolt Flange Bearing 1-3/4 Bore

The Browning VF4S-328 is a four-bolt flange ball bearing unit with a 1-3/4 in bore and a rugged cast-iron housing, designed as a fixed (non-expansion) bearing with set-screw locking for reliable belt-drive and pulley systems. It uses a single lip contact seal with a flinger and arrives pre-lubricated with lithium complex NLGI 2 grease; the inner ring is made of 52100 bearing steel with a black-oxidized inner, and the unit features a powder-coated epoxy finish. Key dimensions include a 4.375 in bolt-center-to-center flange, overall width/length of 5.625 in, overall height of 2.156 in, and a 9/16 in bolt size; the through-bore length is 2.031 in and the inner ring width is 2.031 in. Rated for up to 7,889 lbf dynamic load and 5,216 lbf static load, it runs up to 3,000 rpm and operates from -20 to 200 °F. Weight is about 6.49 lb, with Browning’s VF4S series providing a standard flange-mount bearing option for medium-duty belt-drive applications.