Castor arrangements
There are different ways of arranging the castors because of the different requirements concerning the maneuvering ability of a transport device.
Here is an overview of the most common castor arrangements including their advantages and disadvantages.
2 swivel castors and 2 fixed castors with same overall height
This is the most common castor arrangement.
Another alternative: instead of two fixed castors, two wheels could be mounted on one axle.
Advantages:
+ good going straight ahead
+ good going around bends
Disadvantages:
- poor maneuvering ability in tight spaces

4 swivel castors with the same overall height
Advantages:
+ good maneuvering ability in tight spaces
+ on the spot rotating
Disadvantages:
- poor maneuvering ablility going straight ahead
(possible improvement: using 2 direction locks).
2 swivel and 2 fixed castors, slightly higher overall height of the fixed castors
Another alternative: mounting 2 wheels on one axle instead of the 2 fixed castors.
Advantages:
+ good going straight ahead
+ good going around bends
+ on the spot rotating
+ good maneuvering ability in tight spaces
Disadvantages:
- device can tilt easily!
4 fixed castors, the 2 in the middle with a slightly higher overall height
Another alternative: instead of 2 fixed castors, 2 wheels could be mounted on one axle.
Advantages:
+ good going straight ahead
+ inexspensive
Disadvantages:
- device can tilt easily!
4 swivel castors and 2 fixed castors with a same overall height
Another alternative: instead of 2 fixed castors, 2 wheels could be mounted on one axle.
Advantages:
+ good load distribution on long devices
+ good going straight ahead
+ good going around bends
Disadvantages:
- most expensive