Robotics Case Studies
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Sliding Slewing Ring Bearings
igus Inc. Posted 05/24/2010
Rotary motion on an ultrasonic welding machine
EAST PROVIDENCE, R.I. – A developer and manufacturer of custom-made equipment for the fabricating industry uses sliding slewing ring bearings from igus® for rotary motion on an ultrasonic welding machine.
iglide® PRT slewing ring bearings facilitate movement on both the X and Y axis of the machine, which enables the welding gun to achieve numerous degrees of freedom. This means a variety of different welding jobs can be performed. The slewing ring bearings replaced a system of metal shafts and flange bearings that required time-consuming assembly and maintenance.
PRT slewing ring bearings do not require lubrication and so are unaffected by the welding dust produced by the machine and will not seize, unlike other bearing systems can. The unit comes as a ready-to-install solution, so the manufacturer saves both time and money during the design and assembly process.
The iglide PRT range uses low-friction polymer sliding elements in place of ball bearings. These sliding elements are made from an igus-developed, low-cost, high-performance polymer called iglide J, which is completely lubrication- and maintenance-free. iglide PRT slewing ring bearings are suitable for all environments; in particular, semiconductor and cleanroom applications, assembly lines, production facilities and robots.
PRT slewing ring bearings are an off-the-shelf, low-cost solution. All the housing components are made from aluminum (except style 02 - which has wear-resistant iglide J head rings) and all the surfaces parallel to the iglide J sliding elements are hard anodized with stainless steel fasteners. Stainless steel and geared versions are also available upon request.
The units are available with inside diameters of 30, 60, 100, 150, 200 and 300 mm. For more information, call 1-888-803-1895 or visit www.igus.com.
igus develops industry-leading Energy Chain® cable carriers, Chainflex® continuous-flex cables, iglide® plastic plain bearings, igubal® spherical bearings, DryLin linear bearings and guide systems. These seemingly unrelated products are linked together through a belief in making functionally advanced, yet affordable plastic components and assemblies. With plastic bearing experience since 1964, cable carrier experience since 1971 and continuous-flex cable since 1989, igus provides the right solution based on 70,000 products available from stock. No minimum order required. For more information, contact igus at (800) 521-2747 or visit www.igus.com.