Abstract: A pillow block assembly including a housing having an internal seat for a bearing and retaining means in the form of snap rings on both sides of the outer ring for limiting axial displacement of the outer ring of the bearing in the seat. The pillow block is convertible between free and held units. One form of conversion device comprises a screw member including a conical tip which engages in an annular groove in the outer ring having tapered circumferential sidewalls complementing the tip of the screw member. The screw member is actuatable between a first position permitting movement of the outer ring relative to the housing and a second position preventing axial movement of the outer ring in the pillow block housing. The screw member has a port extending therethrough and a head portion with a lubricant fitting and at least one radial port is provided in the outer ring connecting the annular groove to the interior of the bearing. This arrangement permits lubrication of the bearing through the screw member.

Abstract: A nonrotatable seal assembly is provided for use with a conventional pillow block housing to form a positive barrier to prevent the entry of foreign contamination. The seal assembly has a thin body portion provided with two peripheral grooves each adapted to receive a rib on a wall of the pillow block housing with a deformable sealing member on the outer periphery of said body portion between the grooves. Said seal assembly has a pin extending into the wall of the pillow block housing to prevent relative rotation therebetween. A thicker body portion of the seal assembly contains a lubrication recess between first and second seals with a conventional lubrication fitting communicating with said recess.