1.Adopt the HV high antirust bearing of stainless steel. 2.Exceed winner endure seawater corrosion ability. Model Number Ball BearingGear RatioLine Capacity(mm-m)HD10009+15.2:10.14-260,0.16-140,0.20-120HD20009+15.2:10.16-210,0.20-160,0.25-110HD30009+15.2:10.16-260,0.20-210,0.25-160HD40009+15.2:10.20-260,0.25-170,0.30-125HD50009+15.2:10.25-220,0.30-160,0.40-100HD60009+15.5:10.28-290,0.35-180,0.40- ...