1. Model No. YJ123C-500(0.4) 2. Load capacity(kg) 500 3. Speed (m/s) 0.4 4. Load (kg) 500 Traction Machine YJ123C-500(0.4)Main Characteristics of Traction machine for YJ Series Dumbwaiter1.It is driven by interntional advanced ZC1 type circular envelop worm, good in lubricity, low in power waste, high in drive efficiency, which is higher 20% than ZA,ZN,ZI,ZK type. Gear is small in contact stress, ...