Coupling Features: One- piece metallic spring coupling; For little torque shaft connect; Zero backlash; Absorption of parallel, angular misalignments and shaft end- play by spring acton; Identical clockwise and anticlockwise rotational characteristics; Setscrew type. Coupling Capacity: transfer nominal torque TN = 0. 2~0. 9 N. m allowable speed N =10000~13000 rpm 0. 25mm Limited radial deviation: 0. 1mm 1. 5°Limited angle deviation: ±0. 25mm Limited axle deviation: ±0. 25mm or 0. 15mm stainless steel with high causticity character and widely apply to coder and mini motor transmission. integration, minitype, low inertia.