Required root safety factor

Symbol SFmin
Unit -
Attribute-ID din3991 required safety factor S_Fmin
Numeric ID 237
Value Type PMDouble

The permissible flank pressure and the permissible tooth root stress determined according to the calculation methods ISO 10300 (2001) and ISO 10300 (2014) are reduced by the required safety factor SHmin against pitting and SFmin against root fracture, respectively. Both values are set to 1.0 by default.