Product:  Electric Chain Hoists

Models: SE, LE, ULE

Subject: Lectra-Link Slip Clutch

By: Steve Kaukl, Technical Sales

No. UL-001

Date: 4/2/91

How  does the slip clutch work on the Electric Chain Hoists?

Structure:
	The  friction clutch mechanism is shown in the figure below. Motor torque  is transmitted from gear #2 to gear #3 through the friction clutch, which mainly consists of gear #2 equipped with two friction plates on both sides, two clutch discs, and two coned-disc-springs.
Function:
	Coned-disc-springs  on either side of gear #3 compress friction plates against gear #2.  This allows torque to be transmitted to gear #3, which allows hoist to lift load. When attempting to lift an excessive load, gear #2 rotates idly between both clutch discs to prevent the hoist from being damaged.
Duty:
		Average duty cycle for slip clutch option is approximately 200 hours.
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