How to calculate the needed load capacity of wheels with Polyurethane (Vulkollan) tyres?

How to calculate the needed load capacity of wheels with Polyurethane (Vulkollan) tyres?

To calculate the type of wheel and the needed load capacity of the wheel a number of factors and conditions about the application and use of the wheel have to be taking into account.

Example:
allowable load = 1000kg x 0.75 (continuous running factor) x 0.8 (speed factor) x 0.7 (driving factor) = 420kg.

How to calculate the needed load capacity of wheels  with Polyurethane (Vulkollan) tyres?

LOAD CAPACITY AND FACTORS

The ‘Maximum Load capacity’ given for each polyurethane tyred wheel is the maximum load the wheel will carry in intermittent use (a maximum of 1 hour running followed by a minimum of 1 hour at rest) under the following conditions:

a) the wheel is free-wheeling (not driving)
d) the surface on which the wheel runs is flat and smooth (i.e steel or smooth concrete)
b) the ambient temperature is below 45 degrees C and aboce -20 degrees C
e) that the wheel is not steering or subjected to axial loads
c) the surface speed does not exceed 6 KM/h
 f) no chemical is present which will attack polyurethane

For more severe conditions the ‘Maximum Load capacity’ must be multiplied by the ‘Load factor’ as follows:


Condition                                Load Factor
Continuous running                   0.75
Surface Speed 6-10 KM/h          0.8
Surface Speed 10-16 KM/h        0.7
Vulkollan driving wheels              0.7

For speeds over 16 KM/h, for operating temperatures over 45 degrees C and below 20 degrees C, for humid conditions, and for curved running surfaces (i.e. in supporting rotating drums) refer to industrialwheel.com for the allowable load. Load factors must cumulate, for example:

A Vulkollan wheel with a ‘maximum load capacity’ of 1000kg is to be subjected to continuous running at 8kph in a driving application,

allowable load = 1000kg x 0.75 (continuous running factor) x 0.8 (speed factor) x 0.7 (driving factor) = 420kg.