Linear bearings or Linear bushings are high-precision bearings that provides smooth linear motion along a shaft. The standard linear bush consists of a cylindrical steel housing with circlip grooves, resin or steel retainer cage with steel balls and two-sided rubber seals (UU). The steel balls recirculate within the raceways of the cage and provides unlimited stroke. The most common type is the LM bush. The variations of this bushings include open type (LM-UUOP) and adjustable type (LM-UUAJ), LME (European size) type and LMB (inches) type. Stainless steel or anti-rust (M) linear bushings are also readily available. Notably, SNB is one of the most reliable brands in the market for linear bushings.