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Carrying Capacities
The Carrying Capacity described on this website is the maximum load specified for a particular axle. This takes into consideration the hub type, the axle cross-section, and the maximum over hang. The use of axles in applications without suspensions and/or for liquid conveyance causes dynamic overstress which decreases the axle loading capacities as to those given in the catalogue. There are many factors which contribute to axle performance including:
- Environment (for example, where trailers are used in mountainous areas or in extremely dusty or cold situations).
- The tyres used (especially if the radius is more than 600mm).
- The wheel offset. The catalogue only describes broad guidelines for axles selection and for this reason detailed final axles selection should be performed with the help of our technical department.
However the following section “how to choose an axle “will provide the general information you need to highlight a suitable product for your application.
How to choose an axle
In order to identify the correct type of axle you require please consider:
a) The maximum speed of the vehicle : i.e. 25km/h, 40km/h, 60km/h or 80 km/h
b) The total load weight on the vehicle (obtain the capacity per axle by deducting the weight supported by the towing eye from the total loaded weight);
c) The number of axles per trailer: single, twin axle, or tandem/tridem (for tandem/tridem trailers we recommend steering axles to prevent excessive bearing wear and in order to avoid dragging of the tyres);
d) Once you have identified axle, it is important to clarify whether the overhang (H dimension) distance in your application is more or less than the dimension given on our carrying capacity schemes. In case the actual over is higher than what pointed out by our schemes, please contact our technical department;
e) All carrying capacities are based on wheels with zero offset.
If brakes are required, please identify the brake size needed using the brake section of this catalogue considering:
a) The required braking capacity and the maximum vehicle speed;
b) If an overrun, pneumatic or hydraulic breaking system is preferred;
c) The tyre diameter;
d) The country where the trailer/tank will be used in order to check the need for legislative requirements.
After the required axle type has been determined, you should also specify:
a) Whether stud fixings and/or twin wheel application is needed (please see the “Fittings” section of this catalogue);
b) If camber is required (our standard is 1°30’)
c) The track length (C Measure);
d) If braked axles have been chosen, we recommend out standard brake levers. For different levers, please contact out technical department and point out the length of the camshaft (D dimension) and the need for a compensator;
e) If you require the axle to be painted.
For any other requirements please contact our technical department.
Installation and maintenance for agricultural axles
To learn about recommended installation and maintenance of our axles please ask for our
Installation and Maintenance Manual for Agricultural Axles