1.Zero rotation clearance ,applicable to positive and negative rotation.

 2.Resistant to oil ,dirt ,sand ,grease ,moisture ,many solvents,as well as the atmosphrric effectes of ozone.

 3.Urethane spiders provide high abrasion resistance nd elasticity ,along with good damping characteristics,and compensate radial ,angular and aial deviations.

 4.Detachable design ,easy installation .

 5.Fastening method of clamping srew.

 6.The main part is made of high strength aluminium alloy.