LINEAR MOTION GUIDE UNIT

摘要

A lubricating member is composed of a lubricant reservoir plate of a porous compact and a lubricant-containing member of fibrous material. The lubricating member is packed in an empty space in the end cap to make sure of maintenance-free operation for lubrication over a prolonged period of time. The lubricant reservoir plate is stowed in a recess formed on an outward end surface of the end cap major body and the lubricant-containing member is placed in the space lying deeper than the recess. A packing plate is placed between the lubricant reservoir plate and the lubricant-containing member with making close engagement with an edge defining the recess on the end cap to cover entirely a whole area of the lubricant reservoir plate to seal the lubricant impregnated in the lubricant reservoir plate inside the end cap.

主权项

1. A linear motion guide unit; comprising an elongated guide rail having widthwise opposed sides each of which has a first raceway surface extending lengthwise of the guide rail, and a slider that fits over or conforms to the elongated guide rail for movement lengthwise of the guide rail through more than one rolling element, the slider including a carriage, end caps, end seals, more than one rolling element and a lubricating member, the carriage having a second raceway surface extending in opposition to the first raceway surface on the guide rail to define a load-carrying race between the first raceway surface and the second raceway surface and a return passage extending in parallel with the load-carrying race, the end caps being fastened on forward and aft end surfaces of the carriage, one to each end surface, and provided with turnaround passages to join together the load-carrying race and the return passage, the end seals being attached on outward end surfaces of the end caps, the rolling element being allowed to roll through a circulating circuit made up of the load-carrying race, the return passage and the turnaround passages, and the lubricating member being impregnated with lubricant and installed in one of the end caps to lubricate the rolling element; and
wherein the lubricating member is composed of a lubricant reservoir plate and a lubricant-containing member, the lubricant reservoir plate being impregnated with the lubricant to lubricate the rolling element and installed in a recess lying on an outward end surface of the end cap, and the lubricant-containing member being stowed in an inside space lying deeper than the recess, with kept in close contact with the lubricant reservoir plate to resupply the lubricant to the lubricant reservoir plate.