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How to Measure the SAE Flywheel Size of an Industrial Engine

Jeff & Jim tackle a common question that we receive here at Palmer Johnson Power Systems, “How do you measure the SAE flywheel size of an industrial engine?” They provide instructions on how to attain the key measurements, flywheel drive ring pilot bore and the pilot bearing bore.

The SAE size of an industrial engine flywheel is used in several pieces of drivetrain components in industrial off-highway equipment such as gearboxes, pump drives, transmissions, transfer cases, couplings, and more.

Download the SAE standards document below to assist in determining the SAE flywheel size of an industrial engine. The needed measurements are the K & O dimensions

SAE Housing Flywheel Specifications

SAE Housing & Flywheel Specifications


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