Compact mechanical structure, light volume, small size and high efficiency;Good heat exchange performance and fast heat dissipation;Simple installation, flexible and light, superior performance, easy maintenance and repair;Large transmission speed ratio, large torque, and high ability to withstand overload;Stable operation, low noise and durable;Strong applicability and great safety and reliability.Installation Notes :--Assembly form: vertical installation, horizontal installation, torsion arm installation.--Input mode: motor connection flange, shaft input.--Output mode: solid shaft with flat key, hollow shaft with flat key, hollow shaft with expansion disc connection, hollow shaft with spection, solid shaft with spection, and solid shaft with flange connection.--Can be equipped with backstop according to customer requirements. Combine with R and K series to get a bigger speed ratio.