Design factor

Symbol YD
Unit -
Attribute-ID ccs1996 desigin factor Y_d
Numeric ID 852
Value Type PMDouble

The following options are available:

Fall YD
Alternating load 0.7
Full torque in both directions 0.75
Shrunk-fit gear 0.8
Bi-directional drive  
Only one load direction 1.0

Source: Chinese Classification Society (CCS): Rules for Building and Classing Steel Vessels - 1996 edition