ISO9001 certificated. Spare parts are strictly submitted to the quality control process. All our satellite and sun gears are helical-shaped and are case hardened to 58-62 HRC, granting superior transmission results. Satellite gears are double-supported with full-complement needle bearings that increase torsional stiffness. According to the international Protection Rating system, precision planetary gearboxes designation is IP65. This means protection against dust infiltration(dust-tight) and water jets which are emitted from a nozzle and sprayed against the housing from all directions(jet water).