Polymer slewing rings from igus
Polymer slewing rings from Igus have been designed to replace ball-bearing-type rotary tables or systems and can be used in a variety of applications - usually pivoting.
The tough, lightweight Iglidur PRT slewing ring bearings are ready-to-fit, corrosion-free solutions that require no lubrication or maintenance and the sliding parts are made of the tribo-optimised Iglidur J material.
All the housing parts are made of aluminium, with 316 stainless-steel versions also available.
The Iglidur sliding parts run on hard-anodised aluminium and all connecting screws are made of stainless steel.
The components are available ex-stock within 24hrs in seven sizes, either as the tough standard version (design 01) or as the 200g low-cost design 02 - in this case the head rings are made of Iglidur J4 and run directly against the outer ring without lubrication.
Manual clamp, drive plate and spacer rings are available as accessories.
Special solutions are available ex-stock, such as FDA-compliant slewing-ring bearings (sliding parts made of Iglidur A180) and slewing rings that are extremely chemically resistant and can be used at up to 180C (using the Iglidur H1 bearing material).
The application spectrum of the lubricant-free polymer round-table bearings ranges from clean applications found in medical or measuring technology to environments with a high level of soiling, such as in foundries.
Quite often, the application involves pivoting - forwards, backwards and in intermittent use - at assembly stations or in-house transport conveyer systems, such as indexing tables and jig design.
For systems with individual connection possibilities for drives through gear wheels, the company can supply design 01 with a gear wheel fitted.
The smallest Iglidur rotary tables have inner diameters from 20mm, while the large versions have a diameter of 200mm and the latest version a diameter of 300mm.
This largest size, PRT-01-300, is designed for greater loads and torques, and can cope with an axial-static load of 15 tonnes.
Maintenance-free applications are found to be particularly useful in heavy-machinery design and solar-technology applications.
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