BS EN 12643:1997+A1:2008

BS EN 12643:1997+A1:2008, BS 6912-10:1998 Earth-moving machinery. Rubber-tyred machines. Steering requirements

BS EN 12643 specifies steering system tests and performance criteria for evaluating the steering capability of rubber-tyred self-propelled earth-moving machines having a machine speed, determined in accordance with ISO 6014:1986, greater than 20 km/h.

It applies to tractors, loaders, backhoe loaders, excavators, dumpers, tractor-scrapers and graders equipped with either manual (unassisted) steering, power-assisted steering of fully powered steering as defined in ISO 6165:1997. BS EN 12643 excludes rollers, compactors and pipelayers.

Contents of BS EN 12643:

• Scope
• Normative references
• Definitions
• General requirements
• Ergonomic requirements
• Performance requirements
• Steering test course
• Machine specifications for test
• Tyre circle test procedure
• Steering tests