SAE J 53:1993 PDF Download

The SAE J 53:1993 standard provides guidelines for evaluating the emergency steering capability of specified machines in the event of a power failure. It establishes minimum performance and test criteria for manufacturers to assess the ability of their machines to steer when the engine or steering power source fails.

The standard applies to various types of machines, including tractor scrapers, wheel loaders, wheel tractors, graders, and dumpers, which are designed to operate at speeds exceeding 20.0 km/h (12.4 mph). These machines utilize power sources in addition to operator control effort for steering. The standard aims to ensure consistent evaluation of emergency steering capability across different manufacturers and machine types within the specified criteria.

By establishing these minimum performance criteria, the standard aims to ensure the safety and reliability of wheeled earthmoving construction machines during emergency situations. Compliance with this standard enables manufacturers to demonstrate the effectiveness of their emergency steering systems, providing assurance to operators and stakeholders that the machines can be safely controlled even in the event of power failures.