What's the advantage of UTM series? Its structure is composed of light-weight housing dangling on the shaft by the two bearings, and torque applied at the rotating shaft can be measured accurately as frictions on the bearings are quite minimal. When the housing of UTM series is fixed, a force is easily applied at the bearings between the shafts and the housing due to misalignments. If a force is applied at the bearings, a frictional force against rotation will increase, and it ends up with affecting the accuracy. #1. Demonstration of UTMIII with Oldham couplings #2. Demonstration of UTMIII(C) "In-low" type with Oldham couplings #3. Comparing 3 different kinds of couplings: Vibration-proof type, Slit type & Oldham type