This linear ball bearing enables low-friction linear motion along a shaft, with balls recirculating in a cage to carry radial load while allowing unlimited axial travel. It is sealed on both sides, which keeps the raceway protected from contamination and retains the initial grease fill. Net mass is 12.05 g. Symbol: KH08-PP. The bearing comes pre-greased from the factory and includes a relubrication facility, so grease can be replenished during service without dismantling the unit, extending intervals between maintenance. The double-side sealing makes it suitable for applications where the shaft runs in a dusty or debris-prone environment, while the ball recirculation design supports continuous linear stroke rather than a fixed travel range. No equivalent codes from other manufacturers are specified.