Long-life linear motion bearings
14 October 2008
Misumi has introduced linear motion ball bearings with lubricant reservoirs. The MX ball bushings feature a compartment that deposits lubricant via capillary action across a fibre pad onto the friction surface of the ball bearings. The oil film is thus permanently maintained between shaft and bearings. A front seal on the ball bush prevents lubricant leakage. This long-life lubrication allows for significantly longer mainte-nance intervals – a particular advantage for machines and facilities where access is difficult. Re-greasing within the ball circuit is not necessary. With a precise measure of lubrication on the pitch surface, the soil-free system has been designed to be more environmentally compatible. Due to the low level of lubricant atomising, the MX ball bushings are also suitable for specific clean room applications.
Standard vs. MX
In a 24-hour practice test, a traverse range of 470 km was achieved with a normal ball bushing (LMU-12 type). The MX version however achieved around 700 km more with a total of 1,168 km. This proved that the nominal service life of the linear bushings with a lubricant reservoir is 2.5 times longer. Users profit from the increased service life combined with reduced operational and maintenance costs and reduced installation effort. The MX system therefore ‘forgives’ neglected lubrication.
MX ball bushings are available both with single or double bearings, with or without flange (recessed, deep recess or centric) as well as with a circular, square or rectangular flange form. Almost all versions are available from stock.
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