A Unique Mechanical Variable Speed
Transmission Drive

ADJUSTABLE SPEED DRIVES

Reversible Drives

Precise steering in both directions

Zero-Max' bi-directional adjustable speed drives is the ideal solution when you need Variable revolutions and Reversible operation in a single unit. With the ability to adjust from 400 RPM to 0 and back againThese mechanical drives deliver high accuracy and flexibility - even under load.

The drives are designed for applications where it is necessary to be able to Change direction or reset the output direction without compromising on torque and speed control. At the same time, they provide Constant torque and the possibility of Repeatable and precise settings - all without the use of electronics.

✅ Reversible speed control
✅ Constant torque over the entire speed range
✅ Bidirectional motion - perfect for dancer applications and precise cyclic control
✅ Suitable for automation, pressure control and industrial processes

Models are available in different sizes and torque classes - including the option to connect Right-angle gearboxes and engines in different voltages and configurations.

Explore the selection below and find the right drive for your application:

E Model 3

E Models 1, 2, 41 or 42.

  • Torque Rating 12 in. lbs
  • Rotation 400-0-400.
  • Normal Input 1/4 -1/3 H.P.

JK Models

JK Models 1, 2, 41 or 42.

  • Torque Rating 25 in. lbs.
  • Rotation 400-0-400.
  • Normal Input 1/4 -1/3 H.P.

Y Model 3

Y Models 1, 2, 41 or 42.

  • Torque Rating 60 in. lbs.
  • Rotation 0-400.
  • Normal Input 1/2 H.P.

Gearhead

Right angle gearhead
Availabel for E and JK models.

W1 4:1
W2 10:1
W3 20:1
W4 40:1

Motors

Many popular voltage, HZ,
Phase and enclosures are available for use with drive

E Models 1,2 and 3
JK Models 1,2 and 3