The GMFR-NR series are roller ramp type freewheels, part of a modular system. These
units are supported by two 160. series bearings and require oil lubrication. They
are designed to be used in systems that provide oil lubrication and sealing, as shown in the example. It's crucial that the bearings are not subjected to axial stress. Typically, GMFR-NR types are paired with M series covers, which are designed to transmit torque while also providing oil lubrication and sealing.

The FMSO-NSO are self-contained, sealed, and bearing-supported sprag type
freewheels. These units are delivered grease lubricated. They are compact in design and provide very high torque for their size. In the case of an overload, the sprags engage with each other to resist the force, preventing sprag tilt. The FMSO-NSO are grease lubricated and use standard shaft lip seals.

The RMBW series is a DC sprag-type freewheel, designed as a self-contained unit. It is centred using plain bearings, making it suitable for low rotational speeds, and is sealed with shielded O-rings for protection. The unit comes pre-greased and is ready for installation in either a horizontal or vertical position. It is mainly used as a backstop, offering a high torque capacity in a compact design. This freewheel is built for use in challenging environments, such as areas with high humidity or exposure to water splash. A bolt is used to secure the unit to a fixed part of the machine, passing through a slot in the torque arm to provide the rotational stop. The radial clearance on this bolt should be between 1–3% of the slot width. Additionally, the torque arm and bearings should not be subjected to pre-stress.