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Sankyo's coupling-type (TC-type) torque limiter is
an overload protection device designed for use as an intermediate
transmitting element of rotation. The ball bearings for transmitting
torque are seated in a groove parallel to the shaft line. This pre-loads
the ball bearings radially and ensures sufficient rigidity in the
rotating direction. In addition, the TC type torque limiter is designed
to absorb minor misalignment, or parallelism errors, between two
shafts. The pre-load effect moves the clearance error and angle
of deviation error to ward the center of the shafts allowing for
a certain amount of error.
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