Composite bearings

Our composite bearing materials are self-lubricating polyester synthetic fibres and thermosetting resins.

All grades are available with a solid lubricant incorporated. The various grades contain either graphite, Teflon, ceramic, molybdenum disulphide or a combination of these materials dispersed evenly through the material so that the wear of a components surface continually releases further lubricant and thus reduces friction and improves the wear life.

With most lubricants, our materials have a natural low coefficient of friction which reduces both bearing power loss and the rate of wear. Satisfactory bearing operation with liquid lubricants depend upon the interaction between the lubricant and the bearing surface. Almost any fluid can be considered for use as a lubricant, although water gives the best result.

We offer the design engineer an attractive economical alternative to traditional materials (bronze) used throughout the industry for bushes, bearings, wear pads and many more applications. Composite is only 1/6th the weight of steel, is easily machined, contains no harmful or toxic materials and has exceptional dimensional stability, even in immersed conditions.

Physical Properties

The physical properties for our materials are practically the same for all grades, only the coefficient of friction value and the density in influenced by the use and quantity of different solid lubricants.

 

Hardness (Rockwell) 100 M
Density 1.25 – 1.48 (depending upon grade)

 

Tensile strength (flat) 90 N/mm²
Tensile strength (edge) 76 N/mm²
Flexural strength (flat) 138 N/mm²
Flexural strength (edge) 107 N/mm²
Shear strength (flat) 134 N/mm²
Compressive strength (flat) 345 N/mm²
Compressive strength (edge) 138 N/mm²

 

Water absorption <0.1%
Availability

Our complete range of materials are available in rods, tubes plates and tape form. Machining these items is a straight forward procedure and can be carried out on standard machines.

Bearing tubes up to 1000mm diameter and sheet material up to 145mm thickness can be produced within days.

We can supply special components manufactured to customers drawings from all grades of material.

In addition to special wear pads, bushes and rings, plain spherical bearings can be manufactured to solve misalignment problems. Spherical bearings with metallic and  composite linings can also be produced.

For those applications where a fire risk exists, grades can be produced with exceptional fire retardant properties.