If precision planetary reducers are exclusive to the high-end precision field, then the F/R/K/S four series of reducers are all-round players in the industrial transmission field. With their modular design, strong versatility, large bearing capacity, and flexible installation features, they cover most common industrial scenarios and become the preferred transmission devices for equipment such as assembly lines, packaging machines, printing machines, and photovoltaic production lines. They are also one of the core flagship products of Borus. 

1. Each of the four series has its own strengths and clear divisions of labor.

R Series coaxial helical gear reducer: It adopts a coaxial output design, featuring a compact structure and smooth transmission. The mechanical efficiency is as high as 96%, suitable for multi-stage reduction, has strong bearing capacity, and is suitable for continuous heavy-load operation. It is commonly used in general equipment such as conveyors, mixers, and textile machinery. 

F Series Parallel-axis Helical Gear Reducer: The input and output shafts are designed in a parallel manner. There are various installation options, including base-mounted, flange-mounted, and shaft-mounted. The output shaft can be hollow or solid. It is shock-resistant and suitable for frequent start-stop operations. It is widely used in logistics sorting, packaging machinery, conveyor lines, and other scenarios. 

K series helical gear - bevel gear reducer: Achieves 90° vertical transmission, with flexible steering, high rigidity and large torque. It can handle heavy-duty conditions with ease and is suitable for equipment with limited space and requiring steering transmission, such as CNC machines, lifting equipment, and automated production lines. 

S Series Helical Gear - Worm Gear Worm Reduction Machine: Equipped with self-locking function, operates silently, has a wide range of reduction ratios, and features reverse self-locking capability, which can prevent the equipment from reversing after stopping, suitable for elevators, packaging machines, printing and coating machines, etc., which require braking and self-locking functions. 

II. Common Advantages of the Four Series