Zero-Max^® Drives Overview-Controls

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Go to Standard Shaft Arrangements

Standard Lever Screw Control Extended Screw Control Extended Lever Control Extended Control Stub Flatted and Drilled Control Lever	Standard Lever Type Controls The lever control can be removed from its customary 12 o'clock position and moved to a 6 or 9 o'clock position on E and JK Models and to any position on Y, QX and ZX Models that will not interfere with the output or input shaft. Also available: flatted, drilled and extended levers for easy attachment of any kind of remote control or for use on tension control applications.
	Lever Control Dimensions   Lever Torque Drive Model A (in) B (°) C (in) D (in) (Running no load) (Not running full load) E 5.25 52° 2.50 1.00 7 in-lbs 20 in-lbs JK 5.25 52° 2.50 1.00 7 in-lbs 35 in-lbs Y 6.75 52° 3.25 1.68 15 in-lbs 66 in-lbs QX 8.25 54° 3.55 1.90 36 in-lbs 90 in-lbs ZX 10.00 63° 3.06 2.40 50 in-lbs 160 in-lbs
	Control Linearity Movement of the Zero-Max speed control lever or turn of the screw control screw produces a change in output speed that is non-linear. A typical speed-control curve of a Zero-Max Drive under full rated load is shown to the right.
	Optional Screw Type Controls All Zero-Max Drives are available with screw control. Screw controls give very precise control of speed change and many kinds of remote control attachments are easily made. They are positive and easy to calibrate. Kits are available for adding screw control to drives in the field. The hand-wheel can be mounted on either end of the screw.
	Screw Control Dimensions (in) Number of Screw Turns Screw Torque (inch-lbs.) Drive Model A B C D E F E 1.50 2.12 6.06 .37 3.75 .18 38 2 in-lbs JK 1.50 2.12 6.06 .37 3.75 .18 38 2 in-lbs Y 1.50 2.25 7.42 .44 4.58 .18 50 3 in-lbs QX 2.12 2.87 8.81 .37 5.87 .25 68 4 in-lbs ZX 2.12 6.12 12.31 .50 7.44 .31 91 4 in-lbs

The right to make engineering refinements on all products is reserved.
Dimensions and other details subject to change.
When dimensions are critical, detailed drawings should be obtained from the factory.

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