BS AU 203a is a British Standard on the specification for Dimensions of couplings between power take offs (PTOs) and ancillary driven units on commercial road vehicles. The main aim of BS AU 203a is to provide the best industry specifications that ensure the couplings play a positive role in the overall performance of commercial road vehicles.
BS AU 203a lays down the dimensions of couplings between power take-offs (PTO) and ancillary driven units mounted on commercial vehicles, such as hydraulic pumps, etc.
BS AU 203a applies to ancillary equipment of commercial vehicles that require a hydraulic or mechanical power system and that take power off the main drive line of the vehicle
BS AU 203a on couplings between power take offs (PTOs) and ancillary driven units is useful for:
Selecting the right coupling for the application can have a positive or negative impact on the vehicle’s lifetime performance that is used to connect two shafts together at their ends for the purpose of transmitting power.
A power take-off or power take-off (PTO) is any of several methods for taking power from a power source, such as a running engine and transmitting it to an application such as an attached implement or separate machine. Auxiliary power units are most often used in vehicles for onboard electrical services.
In the majority of cases, the PTO will connect directly to a hydraulic pump. This allows for transmission of mechanical force through the hydraulic fluid system to any location around the vehicle where a hydraulic motor will convert it back into rotary or linear mechanical force.
BS AU 203a provides the specifications of types of couplings and flanges as well as the designation of a PTO with type D connection.
As a result, if you are a coupling manufacturer, complying with BS AU 203a can ensure your products are fit for purpose and meet the desired performance requirements of the couplings.