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Caster Selection Guide – How to choose the right caster for you?

Caster Selection Guide – How to choose the right caster wheels for you?


Casters are used to reduce labor intensity and improve mobility efficiency. Then how to choose the right caster for their own casters? Please refer to the following points:

Calculate carrying weight

Before you decide to buy casters, you first have to know how much you need to buy the caster, because the caster load, size, material and other factors will have a direct relationship with the price of the caster, so how to calculate the weight of a single caster?

To figure out how much weight a single caster needs to carry, you need to know in advance the dead weight of the transport equipment, the total load of the transport equipment, and the number of casters you plan to install

(1) The weight of a single caster is calculated as follows: T=(E+Z)/n* S

T= the required bearing capacity of a single caster

E= the dead weight of the transport equipment

Z = loading

n= Number of casters to be installed

S= safety factor

(2) The safety factor s is affected by speed, wheel diameter, and obstacle height. Considering the deviation between standard operating conditions (smooth ground, constant speed, evenly distributed load, straight running, ambient temperature of +60℉ to +82℉) and actual operating conditions, it can be divided into the following four categories:

1. Manual transmission in indoor area (obstacle height

2. Manual transmission in outdoor areas (obstacle height > 5% of wheel diameter) : Safety factor: 1.5 to 2.2

3. Maneuvering delivery in indoor areas (obstacle height

4. Mobile transport in outdoor areas: Safety factor: 2.0 to 3.0

Scaffolding Caster Wheel

Scaffolding Caster Wheel

Select the wheel material

I believe that after you determine the load of casters, the next choice will be more targeted. Shen Brand V3.0 samples all products are divided into micro, light, medium, medium, heavy, super heavy and (special 45A series -99D series) according to the load.

Casters are usually made of NYLON (cast nylon and injection molded nylon), polyurethane, polypropylene, phenolic, rubber, foam rubber, artificial rubber, inflatable rubber, cast iron and other materials. So different use environment needs you to choose different materials casters.

Selecting an Installation Mode

Castor installation methods commonly include flat bottom installation (screw or welding), screw installation, insert shaft installation, hole top installation, splint installation. Different transportation equipment determines that you need to choose different installation methods. What you need to care about here is the installation hole distance of the bottom plate and the diameter and length of the lead rod and screw.

Hospital Bed Castors/ Medical Caster Manufacturer in China

Hospital Bed Castors

Other options

If what you need is not a product with special features, I believe you have your own answer after the selection of the first three steps.

Choice in front of the wheel when we talked about the different of using environment requires you to choose different material of wheel, here we want to say is that the same round piece of material, different wheel type structure and size will give you the use of different feelings, arc wheel surface structure because of contact with the ground area is small, low friction, pushing up compared with the plane will be more effort, But the arc wheel surface because the contact area with the ground is small, the load per unit area is more, so its rated load is important.

The larger the wheel, the higher the passability when facing obstacles, so the less effort.

Ball bearing rotation is flexible, quiet. Needle roller bearing load is high, rotation flexibility than ball bearing.

The greater the eccentricity of the support, the smaller the starting thrust.

So choose a castor products to meet their needs, according to your needs to choose in turn, in order to achieve a higher cost performance!

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