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This swivel caster is designed for step stools or library ladders. Thanks to its built-in spring, when you put weight on your support, the frame will lower slightly and help stabilize your support.
For example, if you install these casters on the legs of a stool, you can roll it to move it, and then when you sit on it, the spring will allow the legs of the stool to touch the ground and thus stop rolling.
The force to be applied to the caster to achieve 50% compression of the spring is 9.3 kilos, which corresponds to a travel of 10 mm. To achieve 100% compression, a vertical load of 19.6 kilos must be applied, resulting in a total travel of 20 mm.
The compression spring has spaces between the coils when it is not loaded. The distance between the coils decreases when the spring is loaded and compressed. In principle, a compression spring should never be compressed to the point where the coils touch each other. Its lifespan would be significantly shortened. The ideal solution is to use 60% of the maximum force and maximum travel. A compression spring should never serve as a physical stop.
Thanks to its vertical plate with 6 holes of 5 mm in diameter each, it ensures a very strong attachment. The wheel has a diameter of 50 mm, the coating material is rubber, which allows for quiet and non-staining movement, and the total height of this caster is 160 mm.
The frame is equipped with a ball swivel mount and ensures smooth rotation during your movements. The unit load of these casters is 30 Kg, or 90 Kg if you install 4 casters.
The vertical plate measures 49x60 mm, the vertical spacing between two mounting holes is 22 mm, and the horizontal spacing is 39 mm.
You can also use this caster with a side mounting if you cannot install a caster under your support or to relieve your gate. The spring will have a damping effect when handling your gate; to do this, simply install it low enough so that the gate does not touch the ground during use.
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Castor spring-loaded with a diameter of 50 mm
100
50
PVC
Plain bore hub
280
30
4
Fixed to plate
Non-staining
60x50 translates to "60 times 50" in English.
45 times 40 equals 1800.
M5
20
14
-20/+80
25
85
Portal