Stainless Steel Casters

When using casters, it is hoped to first consider their use, required functions, and conditions of use (use range), and then select the appropriate type, please pay attention to the following:

（1）Choose the right load bearing.

The possible load bearing mentioned in the product introduction refers to the general load that is easy to move when moving on flat ground by manual operation. It is also a general load that can be carried out for a long time in a safe state. It is necessary to estimate the total weight of the carried objects in advance, and then select the appropriate castors according to the allowed load.

Carrying weight calculation: T=(E+Z) / M

T = required load bearing weight of single wheel or caster

E = self-weight of transport equipment

Z = maximum load

M = number of wheels and casters used

(Location, uneven weight distribution should be considered)

The effective load capacity of the wheel (M) is as follows:

When selecting the load bearing, it should be calculated according to the bearing capacity of the caster at the maximum support point. The specific force support point of the caster is as shown in the figure below, and P2 is the heaviest support point.

When using casters of different sizes, specifications and models, please use the caster with the lowest load-bearing capacity as a reference to calculate the overall maximum load-bearing capacity.

（2）Choose the right bearing

Single ball bearing: The ball bearing made of high-quality bearing steel can carry heavier loads and is suitable for occasions requiring flexible and quiet rotation.

Double ball bearing: In addition to the advantages of the single ball bearing, it also greatly reduces the gap between the left and right swing amplitude of the wheel and the swing amplitude of the up and down, making the wheel more stable in use.

Roller bearings: Heat-treated roller bearings can carry heavier loads and have average rotational flexibility.

Terling bearings: Terling is a special engineering plastic, suitable for wet and corrosive places, with average rotation flexibility and high resistance.

Rivets: Rivets are mainly used for some smaller caster models. Because the casters are too small to install bearings in them, rivets can only be used as the central axis for the rotation of the casters. When in use, the swinging clearance of the wheel is relatively large, and the force load is small, which is suitable for some relatively small handicrafts.

Plane pressure bearing: suitable for occasions with extra high load and high speed. Therefore, it is often used for some special heavy machinery.

（3）Brake device

Due to the wear and tear of the casters due to prolonged use, the function of the casters may be reduced, so please keep an eye on it.

Stainless steel casters will reduce their anti-rotation effect after a period of use.

Regarding braking performance, please use other braking methods, such as caster brakes, ground anti-slip, etc.

（4） Environmental conditions for using casters

The use environment of stainless steel casters is set in the indoor environment under normal temperature, so try to avoid using them in special environments, such as high temperature, low temperature, high acidity, high alkalinity, multi salinity, chemical solvents, oil, sea water and liquid medicine, which will reduce the effectiveness of casters.

When using, it is necessary to separate various situations and provide other reliable measures, such as the material of metal utensils, the material of casters, the material of lubricating oil and so on. Balance it all out, and take into account that some materials can stain the floor.

（5）About speed

The requirements for the speed of stainless steel casters are: in the normal temperature environment, on a flat ground, the diameter is below Φ75mm, not higher than the walking speed of 2km/h, the diameter is below Φ100mm, not higher than the walking speed of 4km/h, and there are certain stops. In the working state, please avoid the continuous or non-stop use of the caster hair pad.

（6）About flexibility

Casters should be flexible, easy and durable, and their rotating parts (bracket rotation, wheel rolling) should be made of materials with low friction coefficient or accessories assembled after special processing. 

Such as ball bearings or hardened.

The larger the eccentricity of the bracket, the more flexible the steering is, but the bearing capacity is relatively reduced.

The larger the diameter of the wheel, the less effort is needed to push and the better the protection of the ground. The larger the wheel turns slower than the smaller one, it is not easy to heat and deform, and it is more durable. Under the condition that the installation height allows, choose the wheel with the largest diameter as much as possible.

Eccentricity refers to the distance between the steering axis of the bracket and the rotation axis of the single wheel.