Adjustable speed belt gear motors are space-saving, consistently adjustable drives. In the typical version the central adjustment is manufactured with a hands wheel. Unlike inverter operation the motor power remains continuous and the torque improves if the velocity of the engine drops.
The variable speed gear unit housing has a tested symmetrical design. The 
adjusting pulleys have got a wedge designed symmetrical cross section with low mass. The form of the pulleys guarantees Variable Speed Belt Gear Motors Speed Reducer Gearbox uniform flank pressure and for that reason high power transmission, actually at high belt swiftness.
The result is optimal control behaviour with uniform distribution of forces and minimal energy consumption.
