70 C - Mixed ball coupling

Frequently asked questions

• Where can I find the specifications of my coupling system?

  Your coupling system specifications can be found directly, on the label bonded onto the system, or in our catalogue.

• On my coupling system, what does the value D mean?

  The value D (expressed in kN), for a coupling system, is the maximum horizontal dynamic force generated by an articulated bar rig.

• On my coupling system, what does the value Dc mean?

  The value D (expressed in kN), for a coupling system, is the maximum horizontal dynamic force generated by a rig with central axles.

• How can I compute the value D for my rig?

  D = [(gross weight of trailer x max. loaded weight of carrier) / (gross weight of trailer x max. loaded weight of carrier)] x 9.81

• How can I compute the value Dc for my rig?

  Dc = [(gross weight of trailer x max. loaded weight of carrier) / (gross weight of trailer x max. loaded weight of carrier)] x 9.81

• On my coupling system, what does the value S mean?

  The value S (expressed in kg), for a coupling system, is the max. acceptable vertical static load. When preparing a load plan, this value must never be exceeded.

• On my coupling system, what does the value V mean?

  The value V (expressed in kN), for a coupling system, is the maximum acceptable vertical dynamic force generated by a rig with a central-axle trailer.

• How can I compute the value V for my rig?

  V = [gross weight of trailer x length of trailer platform x length of trailer platform x 2.4 (for a vehicle with mechanical suspension) or 1.8 (for a vehicle with pneumatic suspension)] / [total length from the ring to the trailer axle centre x total length from the ring to the trailer axle centre]

• What does the marking ECE R55 mean on my hook?

  The marking ECE R55 indicates that the system is approved in accordance with European Regulation R55. This regulation defines the requirements to be met by coupling systems and mechanical parts, to be considered internationally compatible.

• On my Pommier coupling system, what does the OF N° mean?

  The OF N° on a Pommier product is the manufacturing batch number. It comprises the year and week of manufacture, and the number of products manufactured.

• Where can I find the tightening torque value for the installation of my coupling?

  The tightening torque values for your coupling are shown directly on the label bonded on the coupling, or in the coupling installation documentation.

• Can I install a cycle carrier system on my Pommier ball hook?

  No, we do not authorise the installation of carrier systems on our Pommier ball hooks.

• Where can I find spare parts for my coupling system?

  A Spare Parts catalogue is available on our Web site, in PDF format. It will enable you to find all the spare parts available for most POMMIER products.

• What is the correct height for my coupling hook position?

  Regulation R55 stipulates that the ball centre-line must be between 350 and 420 mm above the ground. Loaded vehicle. (Height range valid for M1 and N1 vehicles only).

• Can my coupling be painted?

  Yes, couplings can be painted. However, take care to ensure that the mechanisms remain functional and that the identity plate is still legible.

• If I purchase my coupling in France, can it be used in other countries?

  If the coupling system is approved R55, it is acknowledged as valid in all European Union countries. You can therefore use it everywhere in Europe.

• What grade of screw should be used to install a Pommier combination hook?

  The required screw grade is indicated on the hook label. We recommend screw grade 10.9.