Radio Tubular Motor Manufacturers describes how tubular motors work:

The stroke part controls the upper and lower limits of the motor; the motor part is responsible for the operation of the motor; the deceleration part mostly uses planetary deceleration to reduce the speed of the motor and increase the output torque at the same time.

① According to the size of the round tube: 35 motors, 45 motor, 59 motors, 92 motors, etc.

② According to the operating principle of the stroke part when the power is cut off: standard tubular motor, hand-cranked tubular motor, chain tubular motor, clutch tubular motor and resistance tubular motor, etc.