ISO 21940-21 : 2012(R2019)现行
MECHANICAL VIBRATION - ROTOR BALANCING - PART 21: DESCRIPTION AND EVALUATION OF BALANCING MACHINES
出版：International Organization for Standardization
专家解读视频
Describes requirements for evaluating the performance of machines for balancing rotating components by the following tests: a) test for minimum achievable residual unbalance, U[mar] test; b) test for unbalance reduction ratio, URR test; c) test for couple unbalance interference on single-plane machines; d) compensator test.
UNI ISO 21940-21 : 2013 - Identical
UNI ISO 21940-21 : 2013 - Identical
BS ISO 21940-21 : 2012 - Identical
DIN ISO 21940-21 : 2013 - Identical
DIN ISO 21940-21 E : 2013 - Identical
BS ISO 21940-21 : 2012 - Identical
DIN ISO 21940-21 : 2013 - Identical
DIN ISO 21940-21 E : 2013 - Identical
