SEM 800-1000 Series, Operation And Maintenance Manual

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TORQUE LIMITER
Torque limiters are used to drive the crusher mechanism and the input
belt conveyor and act as a safety device to protect against inadvertent
overloads. They are factory preset and should not require field
adjustments.
To ensure proper operation, the friction discs must be kept clean and free
of oil and moisture.
Before presuming torque limiter requires adjustment, check for paper
buildup and other conditions, such as bearing failures and proper belt
alignment.
Should adjustment be required, the following procedure is recommended
o
Tighten hex nut to a “finger tight” position (see fig. 6, page 24)
o
An additional half turn will closely approximate the factory setting
o
An additional 1-2/3 turns will result in the maximum torque setting
o
Should sprocket replacement be necessary, sprocket should be
ground flat and parallel with a surface finish of 65 to 125 micro-
inches
o
With new sprocket installed, provide a five minute run-in period at
minimum torque before final adjustment
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