All Slewing Ring Bearings great and small
17 December 2009
Slewing ring bearings are no longer limited to large, heavy duty applications. Their versatility is now boosting performance in smaller designs too.
When would you specify a slewing ring or turntable bearing? The typical response would be when the application calls for a heavy-section bearing with a large-diameter and relatively low precision. Whilst this is correct it is not the complete picture.Slewing ring bearings are no longer limited to large, heavy duty applications. Their versatility is now boosting performance in smaller designs as well and KAYDON® bearings from R. A. Rodriguez are leaders in this field. Improved manufacturing methods and design concepts are behind this trend.
The KAYDON® slewing ring bearing range starts at just 38mm bore diameter and only 6.5mm thick. And these smaller components are ideal for diverse applications from inclusion in lightweight booms for material handling systems to positioning tables in the precision manufacture of optics and semiconductors. The great benefit of this type of bearing is that it simplifies the design and enables cost-effective and hassle-free assembly.
It is an ideal replacement for the traditional ‘king post’ design. Normally supplied pre-lubricated, KAYDON® slewing ring bearings are sealed and can be specified with integral gear or just plain. As standard they come with mounting holes, ready to be bolted directly to the assembly. Two series of KAYDON® slewing bearings are available from R. A. Rodriguez ex-stock.
The standard industrial class MTO bearing range with bores ranging from 50mm to 324mm are supplied with through or tapped holes. Their standard clearance and precision makes them most suitable for inclusion in lift booms, assembly tables, rotary transfer lines and indeed any application requiring simple rotary movement.
Where greater accuracy and a smaller design space are the principal criteria, the KAYDON® Reali-Slim turntable bearings are recommended. These are now available in sizes from 38mm (1.5 inches) to 152.4mm (6 inches) and are just 6.35mm (¼ inch) in height. This range has evolved from the popular KAYDON® Reali-Slim standard range, is manufactured in 440C stainless steel and sealed for life.
As with the standard range, the KAYDON® Reali-Slim turntable bearings may be specified with a number of options. These include internal or external gear or plain diameters, reduced clearance or pre-load and various hole types. Typically these high quality bearings are used in precision automation systems, inspection tables and radar antennae.
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