The strength of our S Helical-Worm Geared Motor is their simple mechanical structure. This yields a higher efficiency than pure worm gear units. In addition, the S series gear units are quiet during operation. It also has a self-locking function. The motor power range is between 0.18 and 22kw. The output speed is between 0.04 and 206 r/min. Gear ratio range is between 6.8 and 33818. Always use the supplied NOCO Fluid paste during the assembly procedure. It avoids contact corrosion and easy for disassembly. Recommends two methods for mounting gear unit with hollow shafts and keys onto the input shaft of the driven machine: one way is install with supplied fastening elements. The other way is install using the optional installation .