Page 402 - Analysis and Design of Machine Elements

Analysis and Design of Machine Elements
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Table 13.3 Types of clutches [8].
Feature and
Types Figures applications
Clutches Jaw clutches Simple structure, small size, no
operated by slippage;
mechanical,
pneumatic and Strong mechanical coupling;
hydraulic, or suitable for slow speed, small
electromag- torque engagement. Commonly
netic used in the drive engagement of
forces individual gears in a manual
automobile gearbox.

Friction clutches Single disc Smooth engagement, large size,
friction clutch heat generated during operation,
slippage occurs when overload;
The most common type; widely
used in transmission system of
vehicles, like automobiles and
tractors. Multiple disc friction
clutches have higher capacity
than single disc friction clutches.

Multiple disc
friction clutch

Clutches Safety clutches Torque sensitive clutch.
operated
automatically Simple structure, yet less
precision; Widely used as
overload protection devices in
machine tools, or in transmission
systems in which overload occurs
occasionally.

(continued)