... &hardness 3.high precision 4.good strength 5.excellent sintered gear wheel 1.Good quality raw( ... strict inspection.2. Specifications We make gear wheel , shaft, gearbox . We make High Precision gear ... , gear wheel , shaft, gearbox . 3. We have a ... system of machine processing, heat treatment and assembling etc. 4. Material: Alloy Steel, Carbon Steel, Stainless Steel, ...