One, I believe the R series is the most direct type of reducer, as its official full name is coaxial gear reducer. The advantages of coaxial reducers include easy installation, strong adaptability, reliability, durability, and high overload capacity. Moreover, the numerical and alphabetic combinations of the model numbers can reveal the specifications of the R series gear reducers. Our naming convention for the R series gear reducer models is: basic type + number model + reduction ratio + motor model (frame number) + motor pole number + installation orientation.