RMI worm gearboxes

Sizes run from 28 to 250. A single stage covers ratios 7 to 100; a combined double unit reaches 10,000. Torque runs up to 2,100 Nm at the top of the range. Sizes 28 to 85 have die-cast aluminium housings and sizes 110 to 250 are cast iron. We pick the size from the output torque and speed you need, then check the ratio against the speed of the motor driving it.

Yes. RMI units are built for S1 continuous duty, including at high load, provided the size matches the application. Tell us whether the drive runs continuously, intermittently or with frequent starts, because starts work a worm gear reducer harder than steady running does. We use that, the motor power and the ambient conditions to set the size and the build.

Specify the overload clutch with adjustable torque. It is the recommended option wherever the risk of overload is real: the clutch releases at the torque you set, so a blocked conveyor or mixer does not pass the shock into the worm wheel, the shafts and the motor. Tell us the worst case at the output and we will set the release torque with the size.

Both are available on the same gearbox. Foot mounting suits standard installations where there is room around the unit. The side flange helps when the gearbox has to sit inside a machine with limited space. Settle the output shaft at the same time, single or double ended, and add a torque arm where the gearbox has to carry reaction forces.

Yes. The range covers non-standard shaft dimensions, versions with a double input, anti-corrosion coatings and special seals for dirty or damp work. Tell us the ambient temperature, the dust level and whether the unit will meet moisture, and we will specify the build and the sealing along with the size and the ratio.