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Zero-Max Adjustable Speed Drives

Zero-Max variable speed drives are mechanical adjustable speed drives available in five sizes. They deliver constant torque from 12 inch-pounds to 200 inch-pounds. The speed range is infinitely variable from 0 RPM to 25% of the input speed under full load. Many Zero-Max drives are offered with right-angle gearheads for lower speed/higher torque uses. Standard electric motors are available or Zero-Max drives may be connected to any rotating power source up to 2000 RPM. Speed control settings are made using a lever control or handwheel.

Controls include:

  • Lever control (extended, flatted and drilled control levers)
  • Screw control
  • Extended screw control
  • Extended lever control
  • Extended control shaft
  • Microdial control

Zero-Max variable adjustable speed drives

Zero-Max Unidirectional Drives

Models: E1, E2, E41, E42

  • Torque Rating: 12in.lbs.
  • Speed Range: 0-400 RPM
  • Normal Input: 1/4-1/3 H.P.
  • Right angle gearhead and a variety of motors are available

Models: JK1, JK2, JK41, JK42

  • Torque Rating: 25in.lbs.
  • Speed Range: 0-400 RPM
  • Normal Input: 1/4-1/3 H.P.
  • Right angle gearhead and a variety of motors are available

Models: Y1, Y2, Y41, Y42

  • Torque Rating: 60in.lbs.
  • Speed Range: 0-400 RPM
  • Normal Input: 1/2 H.P.
  • C-Flange adapters available for connecting your own motor to the drive

Models: QX1, QX2, QX41, QX42

  • Torque Rating: 100in.lbs.
  • Speed Range: 0-400 RPM
  • Normal Input: 3/4 H.P.
  • C-Flange adapters available for connecting your own motor to the drive

Models: ZX1, ZX2, ZX41, ZX42

  • Torque Rating 200in.lbs.
  • Speed Range: 0-400 RPM
  • Normal Input 1-1/2 H.P.
  • C-Flange adapters available for connecting your own motor to the drive

Zero-Max unidirectional drives

Zero-Max Reversible Drives

E - Model 3

  • Torque Rating: 12in.lbs.
  • Speed Range: 400- 0 - 400 RPM
  • Normal Input: 1/4-1/3 H.P.

JK - Model 3

  • Torque Rating 25in.lbs.
  • Speed Range: 400- 0 - 400 RPM
  • Normal Input 1/4-1/3 H.P.

Y - Model 3

  • Torque Rating: 60in.lbs.
  • Speed Range: 0 - 400 RPM
  • Normal Input: 1/2 H.P.

Zero-Max reversible hydraulic drives

Zero-Max Gearheads

Right-angle gearheads available for E and JK Models

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

Zero-Max gearheads for drives

Zero-Max Motors

Many popular voltage, Hz, phase and enclosures are available for use with drive.

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

Zero-Max electric motors for hydraulic drives

Zero-Max C-face Adapters

Includes coupling (standard) for 56 frame motor. All C-Face Adapters will accept 56, 143T and 145T frame motors.

  • Model CFY
  • Model CFQ
  • Model CFZ

Zero-Max C-face adapters

Zero-Max Model Numbers:

  • 100 0-400 A QX1 QX2 - 21 F QX1-CFQ QX2-CFQ - 26
  • 100 0-400 B QX41 QX42 - 21
  • 12 0-400 A E1 E2 - 4 D E1-M3 E2-M3 - 18
  • 12 0-400 B E41 E42 - 4
  • 12 400-0-400 A - - E3 5 D - - E3-M3 19
  • 155 0-20 C E1-W3 E2-W3 - 9 E E1-W1-M3 E2-W3-M3 - 23
  • 155 20-0-20 C - - E3-W3 10 E - - E3-W3-M3 24
  • 190 0-40 C JK1-W2 JK2-W2 - 11 E JK1-W2-M3 JK2-W2-M3 - 25
  • 190 40-0-40 C - - JK3-W2 11 E - - JK3-W2-M3 25
  • 200 0-400 A ZX1 ZX2 - 32 F ZX1-CFZ ZX2-CFZ - 37
  • 200 0-400 B ZX41 ZX42 - 32
  • 240 0-10 C E1-W4 E2-W4 - 9 E E1-W4-M3 E2-W4-M3 - 23
  • 240 10-0-10 C - - E3-W4 10 E - - E3-W4-M3 24
  • 25 0-400 A JK1 JK2 - 6 D JK1-M3 JK2-M3 - 20
  • 25 0-400 B JK41 JK42 - 6
  • 25 400-0-400 A - - JK3 6 D - - JK3-M3 20
  • 300 0-10 C JK1-W4 JK2-W4 - 11 E JK1-W4-M3 JK2-W4-M3 - 25
  • 300 0-20 C JK1-W3 JK2-W3 - 11 E JK1-W3-M3 JK2-W3-M3 - 25
  • 300 10-0-10 C - - JK3-W4 11 E - - JK3-W4-M3 25
  • 300 20-0-20 C - - JK3-W3 11 E - - JK-W3-M3 25
  • 35 0-100 C E1-W1 E2-W1 - 9 E E1-W1-M3 E2-W1-M3 - 23
  • 35 100-0-100 C - - E3-W1 10 E - - E3-W1-M3 24
  • 60 0-400 A Y1 Y2 - 10 F Y1-CFY Y2-CFY - 16
  • 60 0-400 B Y41 Y42 - 10
  • 60 400-0-400 A - - Y3 15 F - - Y3-CFY 21
  • 75 0-100 C JK1-W1 JK2-W1 - 11 E JK1-W1-M3 JK2-W1-M3 - 25
  • 75 10-0-100 C - - JK3-W1 11 E - - JK3-W1-M3 25
  • 90 0-40 C E1-W2 E2-W2 - 9 E E1-W2-M3 E2-W2-M3 - 23
  • 90 40-0-40 C - - E3-W2 10 E - - E3-W2-M3 24

Links to other Zero-Max Hydraulic Products: