This document establishes general design criteria, tolerances, and limits of application for tooling, fixtures and accessories for mounting and driving gas turbine engine rotors on horizontal and vertical balancing machines.

For your own safety, while using balancing tooling, regard the safety instructions of the individual supplier.

Purpose:

The purpose of this document is to provide a set of tooling and fixture design parameters for balancing machine tooling that will facilitate the understanding of the high degree of readout accuracy and precision balance required for turbine engine rotors, and will assist in achieving compliance with the testing requirements as listed in applicable ARP specifications for balancing.

Equipment Selection for Specific Applications:

Rotor type, size, mass, moment of inertia, windage, and balance tolerance are determining factors in the selection of both the balancing machine and the required tooling.

This document describes tooling and accessories to adapt the engine component to the balancing machine.

Balancing machines for gas turbines are defined and specified in ARP587, ARP588, ARP4048, and ARP4050. These documents include details of standard machine classes that cover most engine sizes and should be used to assist with selection of an appropriate balancing machine. These specifications also define the standard interfaces for rotor support and drive.