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Controlled start transmission (CST)

Dodge CST

Delivers precisely controlled transmission of motor power and torque

Titania Mine
Dodge CST

Smooth control with enough power to drive the longest conveyors

Titania Mine
Dodge CST

Minimizes loads and stresses for maximum conveyor uptime

Titania Mine

The Dodge CST gearbox is a rugged, cost-effective solution engineered to provide a consistent, smooth startup and shutdown of long conveyor belts. CST delivers total control of high inertia loads. Providing precisely controlled transmission of motor power and torque, the CST minimizes the loads and stresses on all conveyor components, increasing the reliability of the entire conveyor system. Designed as a 2 in 1 gearbox, the CST combines a planetary gear reducer with an integral wet clutch system. When coupled to an AC induction motor the CST converts the motors high-speed, low-torque input to a low-speed, high-torque output, delivering total control of even the most heavily loaded conveyors. An ideal choice in bulk material handling applications where high availability is a must.  Available in kW ratings from 120 kW to 3,000 kW with an output torque range up to 395,000 Nm. 


  • Controlled acceleration and deceleration ramps
  • Parabolic starting curves
  • Deceleration (not braking) ramps
  • Multiple starting duty
  • Multiple drive load-sharing
  • Cooling system designed for repeated starts
  • Drive motor may be left running between starts


  • Can utilize full motor breakdown torque without oversizing
  • Frequent motor starts eliminated
  • Minimizes voltage drops via sequenced motor starts where multiple drives are utilized
  • kW demand reduced by unloaded motor starts
  • Efficient planetary design
  • Optimal motor load sharing minimizes loads and stresses on all conveyor components
  • CST clutch absorbs transient shocks
  • Parabolic acceleration ramp minimizes belt and pulley stresses

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