Agricultural trailers and trailed equipment. Drawbar jacks - Application safety, test methods and acceptance criteria

Agricultural trailers and trailed equipment. Drawbar jacks - Application safety, test methods and acceptance criteria

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What is ISO 121402 about? 

ISO 121402 is the second part of the multi-series standard. ISO 121402 is an International standard for quality assessment. ISO 121402 deals with application safety, test methods and acceptance criteria for agricultural trailers and trailed equipment, specifically drawbar jacks. 

ISO 121402 specifies safety requirements, tests and acceptance criteria for the application of telescopic mechanical screw and nut-type drawbar jacks and hydraulic drawbar jacks intended to be fitted on the implement tongue of interchangeable towed machinery or jacks fitted with jack attachment mount. 

ISO 121402 applies to implement mounted jacks or jacks fitted with a jack attachment mount.  

ISO 121402 approved jacks are used specifically for supporting the hitch points of implements during storage, lifting and lowering of implement tongues to facilitate attaching to or disconnecting from an agricultural tractor and levelling of machinery for stationary use. 

Who is ISO 121402 for? 

ISO 121402 on application criteria for drawbar jacks is applicable to: 

  • Manufacturers of agricultural trailers and trailer equipment 
  • Quality control personnel 
  • Dealers and importers of agricultural trailers and trailer equipment 

Why should you use ISO 121402? 

A trailer drawbar jack is a mechanism that is installed on the front of the trailer, it does the simple yet important job of lifting and lowering the front of your trailer. It facilitates connecting and disconnecting trailer from your tow vehicle which is impossible to do physically. 

ISO 121402 provides you with extensive guidance on safety requirements and test methods for drawbar jacks. ISO 121402 informs you about the jack stand system application tests. These test methods recreate field conditions that the drawbar jack would endure in its operational life.  

ISO 121402 ensures that your drawbar jacks meet the minimum safety requirements.  

What’s changed since the last update? 

BS ISO 121402:2020 supersedes BS ISO 12140:2013, which is now withdrawn. 

Changes in BS ISO 121402:2020 include - 

  • The application requirements have been moved to this document 
  • The terms used for describing parameters have been clarified