Hindustan Motor Mfg. Co. Offers Shaft Mounted Speed Reducer, A Series. Hindustan Motor Mfg. Co. Is an ISO 9001 certified company. The Shaft Mounted Speed Reducer comes in 0.75 to 110.0 kW Rating; 5/1, 13/1 & 20/1 Ratio and with 30 to 100mm Hollow Shaft. These speed reducers are used in material handling equipment, textile machinery, cement plant, pharmaceutical machinery, packaging machinery, construction equipment, etc.