Page 275 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer
P. 275
Gear and Coupling Best Practices Be st Practice 4.6
Fig 4.6.7 Rotor/case thermal movement e steam turbine
Fig 4.6.10 Jaw and spider coupling
Fig 4.6.8 Multiple, convoluted diaphragm-spacer coupling (Courtesy
of Zurn Industries)
Fig 4.6.11 Transient torsional excitation e Frequency vs. motor speed
or elastomeric coupling shown in Figure 4.6.12 significantly re-
duces the torque amplification, by dampening out the response in
the elastomeric elements. The hardness of these elements is
Fig 4.6.9 Reduced moment convoluted (wavy) diaphragm spacer controlled to limit the maximum amplification factor to an ac-
coupling (Courtesy of Lucas Aerospace) ceptable value (usually 2-3 rated torque).
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