Drive Types
Several types of drive systems are available depending on the application, preference and cost.
All include an electric motor, a reduction mechanism and often a speed adjusting device.
Hydraulic Drives
Hagglunds provides a
Low Speed High Torque hydraulic drive that is very common for belt feeder applications. Their robust design, variable speed and ability to provide full starting torque for an unlimited time provide advantages in this high-load application. Above all, Hägglunds drives have a unique capacity to handle the starts, stops and heavy shockloads common to feeder operation.
An alternate type of hydraulic drive is based on a conventional electric motor and gear reducer. A separate hydraulic motor (driven by the reducer) is required to control the speed.
Variable Frequency Drives VFD
Because of advances in technology and cost competitiveness, Variable Frequency Drives are growing in popularity. The parts include an electric motor, a planetary reducer and the VFD. Speed adjustment is all electronic.
FLS is a leader in this technology and has installed some of the largest highest tonnage feeders in the world with VFDs.
