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• 5~1 variable range

• ATEX Available

• Manual or Electric Speed adjustment.

• Gearmotor or variator alone

• 1,2, or 3 stages of helical output

• 11 fixed ratios

• Seven Frame Sizes Standard

• Foot or flange mount.

• B3,B6,B7,B8,V1,V3,B5,V5, &V6 mounting positions to suit your needs.

• LOW MAINTENANCE

• Smooth speed adjustment running or static.

• Lubricated from factory

• Reliable step-less speed control.

• Preferred by finest machines in the world.

• 1/8th to 10hp

Simple to operate, "stupid-proof" is not an unusual description, and so trouble free that most owners have no idea how it operates or where to get another or a spare part should one ever be required.  TVT America is North America's service & support center for the Varmec VAR, but very little sales are made for parts, a very infrequent Graphite Drive Ring² (below) is occasionally required for older models or ones with untold hours of operation, like any gearbox those with helical secondary reduction (which 1,2, or three stages are available) will require infrequent oil changes (12,500 to 20,000 hours...2-5 years) and eventually a new oil seal on the output shaft.   Unlike Variable Frequency Drives, the VAR has no finicky electrical needs, just a motor, and no computer programmer from the Nerd Squad is needed  to set it up.  Yes, you can buy a more complicated device to vary speed, but probably not a better one.

Principles of Operation

Power is transferred via friction between the Cone¹ at input and the Drive Ring² which leads to the output⁵ (either directly or through 1, 2, or 3 stages of helical gears).   Pressure between the Cone¹ and Drive Ring² is maintained in proportion to the output torque load via a Dog-Clutch⁴ cam.  A Spring³ inside the transmission shaft exerts a low contact pressure between the Cone & Ring during no-load or idling, which also allows speed to be adjusted while static or when in motion; this is a significant design advantage over other variator types.

Speed variation is achieved by movement of the motor, on linear guides via a rack⁷ & pinion⁶ which is driven by the speed control handwheel or optionally by an gearmotor drive system developed for electric remote control of the VAR.

VAR-MEC