... gear, spur gear, gear wheel, motor gear, worm gear, spiral bevel gear, gearbox, gear shaft is quality Our reduction gears, ring gear, spur gear, gear wheel, motor gear, worm gear, spiral bevel gear, gearbox, metal gear ... machinging way: Hobbing or gear shapingSurface treatment: blackened or grey or zinc galvanizedHeat treatment: Teeth hardened or case hardenedPrecision level: when you ...