YL type flange coupling

Performance and characteristics of YL flange coupling:

YL typeFlange couplingIt is a rigid coupling, which connects two flanged half couplings with ordinary flat keys to the two shafts respectively, and then connects the two half couplings into one body with bolts to transmit movement and torque.There are two main structural forms of this coupling:

①Relying on reamed holes and bolts to realize the two-axis centering and relying on the bolt rod to bear extrusion and shear to transmit torque;

②It is centered by matching the convex shoulder on one half coupling with the groove on the other half coupling.The bolts connecting the two half couplings can be used with ordinary bolts of grade B, and the torque is transmitted by the frictional moment of the joint surface of the two half couplings.

The YL flange coupling has high requirements for the neutrality of the two shafts. When the two shafts have relative displacement, it will cause additional loads in the machine parts and worsen the working conditions. This is its main disadvantage.However, due to its simple structure, low cost, and large torque transmission, it is often used when the speed is low, there is no impact, the shaft has high rigidity, and the neutrality is good.

The centering is reliable, can transmit large torque, and the flange end face is required to maintain an accurate verticality with the axis.It is easy to process, does not require lubrication, and is easy to maintain and install. It is mainly connected by two shafts with relatively stable load.

The mass and moment of inertia of the coupling are approximate calculated values ​​based on the material being cast iron (cast steel in brackets), small shaft hole and large shaft elongation.

The allowable speed of the coupling is an approximate calculation based on the material being a casting, and the allowable linear speed is 30m/s; the allowable linear speed of steel is 50m/s.

In the number of bolts column, the bolts for reaming holes are in parentheses.

The flange coupling should have a protective device.

Semi-coupling material: cast iron is HT2002; cast steel is ZG270-500.