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Linear guidance systems with linear recirculating ball bearing units comprise ball bearing units, carriages and guideways. They allow large support distances, have adjustable clearance and are to standard accuracy class G3.
The full complement bearing units run on one or both sides of the guideways and, despite their small dimensions, have high load carrying capacity. If the bearing units are screw mounted in carriages, together with the guideways they form four-row linear recirculating ball bearing and guideway assemblies. The ball bearing units are sealed on all sides by the wipers on the end faces and on the sealing strips which form a gap seal in conjunction with the guideway. Linear recirculating ball bearing units can be relubricated.
The carriages comprise an anodised aluminium body and two linear recirculating ball bearing units. The carriage has two T-slots for fixing to the adjacent construction. The clearance can be adjusted by means of three screws on the side of the carriage; the screws press on the back of the bearing unit.
The guideways are available with raceways on one or both sides. They are made from hardened steel and ground on all sides.