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This ARP specifies both the nominal dimensions and the tolerances for a series of ball bearings with semifinished inside diameters which are suitable for supporting gas turbine rotating components in dynamic balancing machines.

This document specifies those requirements of balancing equipment which make it suitable for the subject class of work. It will specify: (a) Sensitivity, (b) Accuracy of indications of amount and angle of unbalance, (c) Ability to separate the Dynamic Unbalance into two planes and to separate Static and Couple Unbalance, (d) Machine capacity relating to weight and physical dimensions of the rotors which can be balanced, (e) Balancing speed of rotation, (f) Standard balancing machine drive adapter flange dimensions, (g) Standard shroud mounting pads, (h) Power requirements.

This document specifies those requirements of balancing equipment which make it suitable for the subject class of work. It will specify: (a) Sensitivity, (b) Accuracy of indications of amount and angle of unbalance, (c) Ability to separate the Dynamic Unbalance into two planes and to separate Static and Couple Unbalance, (d) Machine capacity relating to weight and physical dimensions of the rotors which can be balanced, (e) Balancing speed of rotation, (f) Standard balancing machine drive adapter flange dimensions, (g) Standard shroud mounting pads, (h) Power requirements.

This recommended practice specifies those requirements of balancing equipment which make it suitable for the subject class of work. It will specify: a Sensitivity b Accuracy of indication of amount and location of unbalance c Ability to measure force unbalance unaffected by couple unbalance d Machine capacity relating to weight and physical dimensions of the rotors which can be balanced e Balancing speed of rotation f Standard balancing-machine drive-adapter flange dimensions g Power requirements

This document specifies those requirements of a balancing machine which make it suitable for the subject class of work. It will specify: (a) Sensitivity, (b) Accuracy of indications of amount and location of unbalance, (c) Ability to separate the Dynamic Unbalance into two planes and to separate Force and Couple Unbalance, (d) Machine capacity relating to weight and physical dimensions of the rotors which can be balanced, (e) Balancing speed of rotation, (f) Standard balancing machine drive adapter flange dimensions, (g) Standard shroud mounting pads, (h) Power requirements.