SAE ARP4050

(R) Balancing Machines - Description and Evaluation Vertical, Two-Plane, Hard-Bearing Type for Gas Turbine Rotors

active, Most Current
Buy Now
Organization: SAE
Publication Date: 1 February 2017
Status: active
Page Count: 24
scope:

Characteristics of vertical hard-bearing balancing machines are described which make such machines suitable for gas turbine rotor balancing

This document specifies the following

General dimensions and capacities

Performance requirements

Balancing speed ranges

Drive power requirements

Balancing machine spindle flange dimensions

Test procedures

Proving rotors and associated test masses required for the performance tests are described in ARP4162

Test procedures are described in detail and test log samples along with a polar diagram for evaluating the test results are furnished

The predecessor documents ARP588, ISO 2953, and the available technology of hard-bearing balancing machines have been considered in the preparation of this document

This document was developed for hard-bearing balancing machines but may also be used for existing soft-bearing balancing machines

Purpose

The purpose of this document is to delineate the technical specifications for vertical, rotating type, hard-bearing balancing machines for measuring the amount and angle of unbalance corrections required in one or more transverse planes to balance gas turbine rotors. (For Glossary of Terms and Nomenclature, see ISO 1925.)

Hard-bearing machines have been used for gas turbine rotor balancing for several years. They have largely replaced softbearing machines. Hard-bearing machines provide permanent calibration (see ISO 1925) with first-run readout, simpler operation, easy adaptation to computerization, and eliminate support locking requirements and windage fluctuations

This document also delineates performance tests to ensure compliance with the document

This document was prepared to give a general description of balancing equipment capable of balancing gas turbine rotors either now in service or to be put into service in the foreseeable future. Standardization of balancing machine to rotor interfaces is intended to enable a set of tooling for a particular component to be used on a variety of machines in one capacity range

This document may also be used as a general specification for purchasers in procuring suitable vertical two-plane balancing machines

The performance and test requirements may be used for periodic tests and/or after repairs that may have affected the balancing machine's performance. The test procedure shall be the same as described in this document

The performance and test requirements have been written in terms of "emar" (minimum achievable residual specific unbalance), and A-units rather than fixed physical values, such as grams, millimeters, ounces, or inches (see ISO 1925)

Document History

SAE ARP4050
February 1, 2017
(R) Balancing Machines - Description and Evaluation Vertical, Two-Plane, Hard-Bearing Type for Gas Turbine Rotors
Characteristics of vertical hard-bearing balancing machines are described which make such machines suitable for gas turbine rotor balancing This document specifies the following General dimensions...
July 1, 1994
Balancing Machines - Description and Evaluation Vertical, Two-Plane, Hard-Bearing Type for Gas Turbine Rotors, Recommended Practice
A description is not available for this item.
July 1, 1994
BALANCING MACHINES - DESCRIPTION AND EVALUATION VERTICAL, TWO-PLANE, HARD-BEARING TYPE FOR GAS TURBINE ROTORS
Characteristics of horizontal hard-bearing balancing machines are described which make such machines suitable for gas turbine rotor balancing. This document specifies the following: a. General...
July 1, 1994
Balancing Machines - Description and Evaluation Vertical, Two-Plane, Hard-Bearing Type for Gas Turbine Rotors
Characteristics of vertical hard-bearing balancing machines are described which make such machines suitable for gas turbine rotor balancing. This document specifies the following: a. General...

References

Advertisement