Metal-polymer low friction plain cylindrical bushes compliant with RoHS (Restriction of Hazardous Substances) specifications are precision-engineered components that offer superior performance while adhering to strict environmental regulations. These bushes are typically composed of a metal substrate, such as steel or bronze, combined with a polymer overlay that provides a low-friction surface for smooth and reliable operation.

The metal substrate ensures strength and durability, while the polymer overlay significantly reduces friction and wear. This combination results in bushes that are capable of handling high loads, high speeds, and extended operational life.

In addition to their excellent performance characteristics, metal-polymer low friction plain cylindrical bushes compliant with RoHS specifications are environmentally friendly. The RoHS directive limits the use of certain hazardous substances, such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl s (PBDE), in electrical and electronic equipment. By adhering to these specifications, the bushes contribute to a more sustainable and environmentally responsible production process.

Applications for these bushes are diverse and include industrial machinery, automotive components, and other precision equipment where low friction and high performance are critical. Their ability to provide smooth operation and extended life makes them a valuable asset in a wide range of industries.

Bronze Sleeve Bushings

While VIIPLUS is recognized as the supplier in pipe handling self-lubricating bearing manufacturing equipment, our sliding bearing bushing product range includes equipment for a wide variety of customers.

Dimensions and Tolerances Metal-Polymer Low Friction Plain Flange Bearings & Cylindrical Bushes materials offer the following characteristics: • Good frictional properties with negligible stick-slip • High static and dynamic load capacity • Suitable for rotating, oscillating, reciprocating and sliding movements • Compact size and low weight • Prefinished that requires no machining after assembly • Possibility to burnish for reduced operating clearance.

Metric bearings and imperial bushings made to order: Standard bushing forms in special sizes, half-bushings, stamped/deep drawn shapes, bearings with locating notches, lubricant holes and grooves, customized designs.

Bushings forms available in standard dimensions,Lead free in compliance with European RoHS

Sleeve Bushing PV Factor:The useful operating life of a red ptfe sleeve bushing & sliding bearing is governed by the pv factor, the product of
the specific load p [MPa] and the sliding speed v [m/s].For thrust washers and flanged bush thrust faces the rubbing velocity at the mean diameter is used.

Bushing Tolerances for minimum clearance Where it is required to keep the variation of assembled clearance to a minimum, closer tolerances can be specified towards the upper end of the journal tolerance and the lower end of the housing tolerance.

Boundary Lubrication Bearings Characterised by:

• Rubbing of the shaft against the bearing
with virtually no lubricant separating the
two surfaces.
• Bearing material selection is critical to
performance.
• Shaft wear is likely due to contact
between bearing and shaft.
• The excellent properties of RED PTFE BUSHING material
minimises wear under these conditions.
• The dynamic coefficient of friction with RED PTFE is typically 0.05 to 0.3 u