Joint Simulators 



tJRS Joint Simulator Bench

The tJRS Opta is the only fully automated Joint Test Bench that is based on a threaded fastener. This means that Joint conditions can be set up in the same way as in real fastener applications, and also the Joint can be automatically “backed off”. As a result, tools can be tested offline under the most realistic conditions of any automated Joint Simulator Bench, in a quick and efficient manner.

Traditionally, automated Joint Test Bench’s have used friction brake systems in place of a threaded fastener. The reasons for this were to overcome the two main issues which are having to reverse, or back-off, after each rundown and the cumbersome nature of re-configuring the joint characteristic.

Whilst friction brakes can easily be reset, removing the back-off issue, they introduce many of their own problems often resulting in the simulator having significantly different properties to actual Joints the tools will be used on. Crane’s tJRS Torque Test Bench sets the standard for accurate and precision torque management.

Key Features

  • Torque or Force indicator and Data Collector

  • A threaded fastener and nut

  • Fully automated quick release of fastener and variable Joint rate from soft to hard

  • Tool testing in accordance with VDI/VDE2647

  • Comprehensive management software (OMS)

  • Torque, Angle and Impulse count

  • Track, Peak, 1st Peak (Click) and Pulse measurement

  • Standard versions available in 330, 500 and 1000Nm

Mobile Tool Torque Station (MTTS)

The Mobile Tool Torque Station (MTTS) is a portable Tool station which also provides a reliable platform and surface to test the Torque readings of your Tools at the side of the production line and a useful storage trolley for all of your Tools and Torque testing equipment.

The MTTS is compatible with the complete range of Torque management and measurement Tools from Crane Electronics and can be supplied as a simple Tool station or equipped to your specifications.

The Mobile Tool Torque Station is perfect for the measurement of all continuous drive, impulse and hand Torque Tools.

Key Features

  • Solutions for various Torque ranges from 0.2Nm upwards

  • Line-side tool testing

  • Flexible design and easy to manoeuvre

  • Optional rotary or static torque transducers, joint kits or torque data collectors

  • Can also be customised with printers, barcode scanners and various screen & panel options

  • Can be configured to communicate with your system or Crane’s OMS software

Joint Kits

The performance of an assembly tool is highly dependent on the conditions of the actual production joint on which it is used. Tooling engineers are well aware of the ‘mean shift’ term used to describe the different torque delivered by the same tool when applied to a soft or hard joint. It is therefore essential in testing and setting up tools off the production line to allow for the joint condition which the tool will experience on the job.

Crane’s joint kits satisfy this requirement by using a bolt and suitably configured disc washers allowing free running of the bolt and a subsequent torque gradient to closely match the production joint condition.

Two versions are available. Female ‘Transducer Top’ Joint Kits are used in conjunction with female stationary transducers, while Table Top Joint Kits are used with CheckStar rotary transducers. The latter are fixed to a workbench and are particularly suitable for off-line testing of impulse tools. Both versions incorporate a selection of disc washers and spacers that may be configured to simulate various joint conditions.

Key Features

  • Represent production joint conditions off the production line

  • Can be adjusted to include joint conditions specified by ISO 5393

  • Allows free running of bolt before torque gradient

  • Major benefit to accurate tool test and set-up

  • Used in combination with stationary torque transducers or CheckStar rotary torque transducers