SA insert bearings are made from 52100 series bearing steel. The SA insert has a spherical OD which allows it to self-align when mounted in various types of mounted bearing housings. The SA insert bearing has a flush back face which makes it ideal for positions where space is limited. It features a metal-faced rubber seal which keeps lubricant in while keeping contaminants out. The seal is crimped in place on the entire circumference of the outer ring.
Because this style insert is commonly used in pressed steel housings without grease fittings, SA insert bearings come standard as a non-greaseable insert and are considered to be Lubed-for-Life.
SA2xx-xxG
The G suffix version of the insert bearing has the same features and benefits of the SA insert. Additionally it is able to be regreased. This style has grease access hole(s) in the outer ring. It features an anti-rotation pin as it is primarily used in cast iron housing applications that have a grease fitting standard.
Factory Lubrication
The SA Normal Duty Narrow Inner Ring Set Screw Insert Bearing is factory lubricated with Chevron SRI#2 AW (anti-wear) grease. The insert contains 30-40% grease fill by volume. The SA insert is factory sealed after lubrication and is considered Lubed-for Life.
SA2xx-xxG
The G suffix version of the SA insert is factory lubricated with Chevron SRI#2 AW (anti-wear) grease. The insert contains 30-40% grease fill by volume. The G version of the SA insert is able to be regreased. This style has grease access hole(s) in the outer ring.