 INFLATABLE WHEELS
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This castor helps relieve the hinges of a gate and prevents it from sagging over time.
The spring is very flexible and requires a vertical force of 15 kilograms to reach the maximum travel of 72 mm. To achieve a travel of 50%, a force of 7.3 kilograms must be applied. This does not mean that the castor only supports 15 kilograms, as it is designed to withstand a unit load of 70 kilograms. Indeed, it is made of 5.5 mm thick steel, which allows it to be installed on most gates.
It is important to pay attention to the total permissible load per castor and the load solely related to the spring for compressing it.
You can easily change the spring yourself and install the desired resistance; simply unscrew the retaining nut on the rod and put in another spring.
The outer coating of the product is a galvanization that will protect against rust. The wheel is made of rubber to prevent noise during opening/closing and also to roll over small gravel.
The compression spring has spaces between the coils when it is not loaded. The distance between the coils is reduced 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, as 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.
If you are looking for a much higher vertical spring resistance, you can refer to the article 86776
You will find a diagram in the photos with the following dimensions:
A: 100 mm
B: 350 mm
C: 240 mm
D: 40 mm
E: 8 mm
F: 42 mm
G: 84 mm
H: 160 mm
J: 50 mm
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Castor of fixed gate diameter 100 mm with a travel of 72 mm
100
50
PVC
Plain bore hub
280
30
4
Fixed to plate
60x50 translates to "60 times 50" in English.
45 times 40 equals 1800.
M5
37
14
28.5
53.5
-20/+80
Non-staining