Plastic Balls

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Plastic balls are light and in low load applications do not need lubrication. Balls are made as standard in a variety of plastic other materials. We currently list balls in Nylon and Delrin.

Nylon

Nylon balls are used in valves, light-duty bearings, flowmeters, and numerous special applications where toughness, abrasion resistance, and being lightweight are more important than hardness.

The mechanical properties are as follows:

 Hardness: 115 Rockwell ‘R’

 Density: 1.14g cm3

 Relative Density: 1.14

 Water Absorption (24 Hours): 8%

 Maximum Useful Temperature: 160°C

Delrin

Also known as Acetal, Polyacetal, and POM, Delrin is an engineering thermoplastic commonly used for precision parts that require high strength, hardness, and rigidity. It is a tough material with a low coefficient of friction and high abrasion resistance. It has good electrical and dielectric properties, low water absorption, and it’s FDA-approved. Naturally white in colour, it does accept opaque colours well and can be polished to a shine. It has good chemical resistance, but is sensitive to mineral acids, chlorine, and alkaline degradation. Common uses include pump parts, valve bodies, and bearings.

The mechanical properties are as follows:

 Hardness: 115 Rockwell ‘R’

 Density: 1.14g cm3

 Relative Density: 1.14

 Water Absorption (24 Hours): 0.9%

 Maximum Useful Temperature: 105°C

Other Materials

Balls are also made in the following materials:

 PTFE (Teflon)

 Phenolic Resin

 Polypropylene

 Polystyrene

 Polyethylene

 Polycarbonate

For further details on our plastic ball bearings, call us today.