Mechanical Variable Speed

Mechanical Variable Speed – TD Series

“0N” Series

ComTrac Series 0N will provide dependable performance in adjustable speed applications which require high output speeds. The output shaft connects to the driven load by a coupling or with a belt or chain drive and can be horizontal, wall, ceiling, or vertically mounted without concern for lubrication or other modification.

“0F” Series

ComTrac Series 0F are designed to attach to any speed reducer with a NEMA C-face input. While the C-face input allows the use of a wide selection of NEMA motors, the C-face output lets you add a speed reducer that meets your exact performance, configuration, and maintenance needs.

For speed ranges beyond the limits of a ComTrac unit, “OF” units can be assembled with MGS Reducers to provide a very broad range of speeds, mounting configurations and output options.


C Series	F Series	K Series
Specifications	Specifications	Specifications
Dimensions	Dimensions	Dimensions

Traction-type adjustable speed drives like the ComTrac®, when compared to mechanical belt-type, or electrical adjustable speed drives, offer:

Often, a lower initial cost
Few worries about motor overheating during low speed operation
No motor brushes to replace
Very compact and lightweight when compared to other mechanical drives
Simple design with few rotating components to wear or replace
Easily serviced by semi-skilled personnel
Low maintenance – doesn’t need to be cycled through its speed range to prevent component damage
2 year warranty – your assurance of satisfactory product performance

Horsepower Ratings: 0.5 to 10

Output Speeds: 2180 to 311 RPM. Combine with MGS "C", "F", or "K" to get down to .6 RPM

Speed Range: 5:1 or 7:1

Output Torques: Up to 496 in.lb.

NEMA C-Face Inputs: 56C through 215TC

NEMA C-Face Outputs on 0F: 56C through 182/184TC

Stober Drives