WG Bushings
WG bushings combine a metal core with a Teflon (PTFE)-based sliding layer – a good solution where you want low friction without relying on constant lubrication. They are a relatively recent category compared to traditional bronze or steel bushings, but have rapidly gained popularity in applications where frequent maintenance is difficult or costly. They offer a modern alternative to traditional bushings, whilst maintaining dimensional compatibility with existing assemblies.
What are WG bushings and what are their technical specifications?
The structure is simple: a steel substrate coated with PTFE or a self-lubricating polymer composite, applied using a process that ensures good adhesion to the underlying metal layer. The result is a stable sliding surface that requires no external lubrication and maintains a low coefficient of friction even at variable speeds or during frequent starts and stops.
The PTFE layer also offers good resistance to a wide range of temperatures and to occasional contact with various mild chemicals, without significantly altering its sliding properties. This combination makes WG bushings a versatile technical solution, suitable for equipment operating under heavy-duty cycles but where access for maintenance is limited or costly.
Recommended applications and compatibility with industrial equipment
They work well in hydraulic cylinders and guidance systems in mobile machinery, being compatible with pins and shafts from series such as E92, EB65-01 or JDBF. They are a good option to consider if you wish to reduce the frequency of maintenance interventions in the long term, particularly for equipment installed in locations that are difficult to access for regular lubrication.
Selection and fitting guide for WG bushings
Check the inner and outer diameters, length and fitting tolerance specified by the manufacturer to ensure the self-lubricating layer functions correctly. During installation, avoid excessive pressure – the PTFE coating may be damaged if you exceed the recommended clearance, and scratching the active surface can significantly reduce the bushing’s service life.
The benefits of buying WG bushings from Hydraulic Seals Store
We sell genuine WG bushings, with a full technical data sheet available directly in the catalogue, including fitting tolerances and recommendations for use. Alongside the WX variants and the rest of our range of hydraulic seals, you have everything you need for comprehensive preventive maintenance, with fast delivery and support in choosing the right product for your specific situation.