What is ISO 789-6-Position of the centre of gravity of agricultural tractors about?
ISO 789 discusses agricultural tractors. ISO 789-6 is the sixth part of the ISO 789 multi-series and discusses the centre of gravity.
ISO 789-6 specifies a method of determining the position of the centre of gravity of agricultural tractors. ISO 789-6 is applicable to agricultural tractors having at least two axles fitted with wheels or tracks.
Who is ISO 789-6-Position of the centre of gravity of agricultural tractors for?
ISO 789-6 on the position of the centre of gravity of agricultural tractors is useful for:
- Tractor manufacturers
- Quality control personnel
Why should you use ISO 789-6-Position of the centre of gravity of agricultural tractors?
The agricultural tractor is a motor vehicle used to pull heavy loads, especially farm machinery such as ploughs or harvesters. It usually has two large rear wheels with deeply treaded tyres. The centre of gravity (CG) is the point on the tractor in which all parts balance one another. For a tractor to stay upright, the CG must stay within the stability baselines. ISO 789-6 provides you with terms and definitions required for the functionality of determining the position of the centre of gravity of agricultural tractors. ISO 789-6 guides you with general requirements and test procedures and helps you with test reports.
Although there are many possible methods of determining the centre of gravity, ISO 789-6 provides you with a simple, practical method, that requires the use of a weighbridge and crane. Alternative methods can be used if they locate the centre of gravity with respect to the specified reference planes and within the specified tolerances.
What’s changed since the last update?
BS ISO 789-6:2019 supersedes BS 63476:1983 which is withdrawn. BS ISO 789-6:2019 includes some technical changes with respect to BS 63476:1983. These include:
- The terms and definitions have been updated
- A requirement for a mass in the driver’s seat has been added
- A requirement for locking the suspension has been added
- A new method has been added for alternative determination of vertical coordinate
- New figures and tables have been added
