Solid-polymer rod stock for machined parts

Heilbronn, Germany – GGB, formerly Garlock Bearings, now offers three grades of solid-polymer rod stock that can be machined into bearing prototypes and small, serial parts to customer specifications. These include EP22™, a PBT-based thermoplastic material; EP43™, a PPS-based material; and EP63™, a PEEK-based material. The rods are available in lengths of 1 m and diameters of 10, 20 and 30 mm.

EP22™ can provide cost-effective performance in household appliances, chemical equipment, sporting goods and other applications. The material performs well in both dry and lubricated operating conditions. Maximum static load is 50 N/mm2; maximum sliding speed dry is 1 m/s; operating temperature range is -50oC to +170 oC; coefficient of friction dry is 0.22-0.37; required peak-to-valley height of the ground sliding partner is 0.3 ± 0.2 µm; and recommended hardness of the sliding partner is >200 HV. The PV limit depends on the ratio between the heat-dissipating and contact areas.