Plastic Balls

Precision plastic balls can be made from almost any plastic material. Commercially available materials include: Acetal, Acrylic, Delrin®, Nylon®, ( Click for stock ) Phenolic plastics, PolyPropylene, PolyEthylene and PTFE. Click for stock.

Commercial production of plastic balls runs from 1/8" ( 0.125", 3.175 mm ) to over 1 1/4" ( 1.25", 31.75 mm ) in 1/32" ( .03125", .79375 mm ) increments. Also, some of the metric ( millimeter ) sizes are commercially available. We will custom manufacture precision plastic balls even smaller than 1/8" ( 0.125", 3.175 mm ) all the way up to seventeen inches ( 17", 431.8 mm ). See photo gallery page. Large diameter plastic balls from eight inches ( 8", 203.2 mm ) to thirteen inches ( 13", 330.2 mm ) are common, everyday, production items for us.

The quality specification for precision plastic balls is very different from that for precision metal balls. Grade 3 plastic balls must be spherical within three thousands of an inch ( 0.003", 0.0762 mm ) and be within the specified diameter within plus or minus three thousands of an inch ( 0.003", 0.0762 mm ). Grade 2 plastic balls must be spherical within two thousands of an inch ( 0.002", 0.0762 mm ) and be within the specified diameter within plus or minus two thousands of an inch ( 0.002", 0.0508 mm ).

Grade 1 plastic balls must be spherical within one thousands of an inch ( 0.001", 0.0254 mm ) and be within the specified diameter within plus or minus one thousands of an inch ( 0.001", 0.0254 mm ). In addition to these grades, we also supply a precision machined grade ball that is spherical within five thousands of an inch ( 0.005", 0.127 mm ), and must be within the specified diameter within plus or minus five thousands of an inch ( 0.005", 0.127 mm ).

Modified plastic balls can be produced with flats, holes, threads or whatever. Send a sketch of drawing to our order desk for immediate quotation on your modified plastic ball requirements. There is no minimum quantity requirement for these special balls. Bal-tec will custom manufacture complete balls, or partial spheres from any workable material, metal ( except lead ), plastic, or ceramic.

Delivery on custom made balls is measured in days, not weeks or months. We stock most sizes of chrome steel, 440C hardened stainless steel, 300 series soft non-magnetic stainless steel, brass, aluminum, soft mild steel and several types of plastic. Our quality level equals or exceeds A.F.B.M.A. standards. When required, we can measure and document every dimensional characteristic in our own metrology lab.