Cross-shaft universal coupling plane type description 1. E-type-telescopic unit structure 2. Flange bolt hole arrangement 3. D-type-no telescopic unit structure long type 4, B-type non-telescopic welding type 5, C Type-short type without telescopic unit structure 6, type A-telescopic welding type In each structure type, the meaning of each code is as follows: L standard length, for the telescopic type, the length L is the minimum length Lv extension in the shortened state Long mass m, mass Tn, nominal torque T, fatigue torque, that is, the allowable torque determined by fatigue strength under the action of alternating load. The maximum axis angle ml increases by 100mm. Remarks: It is calculated in millimeters if the unit of measurement is not indicated. , When the user needs to change the standard length, expansion amount and flange type size, please contact our factory.