M O T I O N S Y S T E M A P P L I C AT I O N S
Highest Torque in the Smallest Space ... or the largest.
Maxitorq® clutches and brakes deliver power, reliability and are customized to meet your exact needs. Land, sea and air – CJM is everywhere. AS9100C:2009/Certified
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BRAKES AND CLUTCHES are sometimes pre-integrated into designs. Case in point: The new Warner Linear B-Track K4x dc-motor-driven ballscrew actuator (which delivers 4,000 lb load capacity) includes a ball-detent overload clutch. The actuators excel where designs can’t use fluid-power cylinders — on solar panels, off-highway equipment, scissor and dump box lifts, and mower and tractor lifts, for example. Its overload clutch setting is at 25% over the actuator’s rated dynamic load. No wonder that these and other overload clutches are called torque limiters in some contexts. Main strengths here are simple and accurate disengagement at a preset torque. Here’s how the simplest versions work: Rollers (usually balls) are sandwiched between two component halves — and rest in mirror-image detents machined into these halves. Usually springs hold the halves together. The
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brakes & clutches – Motion Control HB 08.18 V4 FINAL.indd 20
DESIGN WORLD — MOTION
motor-driven side transmits torque to the load half called the thrust or pressure flange, and the whole assembly rotates in unison unless there’s an overload. In such situations, the overload-clutch halves overcome the axial spring force and repel apart. The rollers come free of their detents and roll to continue onward or resettle into the next detent pair when the jam or other overload is removed. OTHER APPLICATIONS Brakes, clutches and torque limiters work in medical equipment, packaging machinery, industrial hoists, and installations. Recall that brakes stop and hold loads. Clutches and torque limiters disengage and engage powertransmission outputs to transfer torque from an input. Torque limiters modulate power transmission to protect mechanical equipment from overload. When selecting clutches, brakes, and torque limiters for an application,
motioncontroltips.com | designworldonline.com
11/19/18 11:57 AM