When purchasing industrial casters, many companies place particular emphasis on one key parameter— Carrying capacity 。

The maximum load a caster can support often determines whether it makes the procurement shortlist.

However, in practical use, such situations often arise:

The equipment’s weight did not exceed the casters’ rated load capacity, yet it still could not be moved by a single person; meanwhile, another, heavier piece of equipment began to roll with just a gentle push.

Why is this the case?

The answer is very likely hidden in another often-overlooked metric— Starting Power 。

For industrial casters, The most energy‑intensive phase of moving a device is not the actual motion itself, but rather the instant when the device transitions from rest to rolling.

What is starting power?

Simply put, the starting force is… The initial force required to set stationary equipment in motion. 。

When the device is at rest, the wheel surface, bearings, and ground are in a state of relative static equilibrium, and overcoming static friction is required to initiate rolling.

Once the device has started moving, the continuous propulsive force required typically decreases.

Therefore, many operators share this feeling:

“The first push was really tough, but once it got going, it was much easier.”

This is the difference that Kickstart makes.

Why is initiating a task more effortful than sustaining it?

Industrial casters can be thought of as a stationary handcart.

When stationary, it is necessary to overcome the initial resistance between the wheel and the ground, internal bearing friction, and the equipment’s inertia.

Once the wheel starts to turn, some of this resistance decreases, making subsequent propulsion easier.

When equipment requires frequent start‑stop cycles every day—such as logistics transfer carts, tooling carts, or material‑handling carts—the impact of starting torque on the user experience is often more pronounced than that of rolling resistance.

What factors can affect the starting torque?

I. Total Equipment Weight

The heavier the equipment, the greater the static friction that typically must be overcome during startup.

This is also why heavy-duty equipment requires greater thrust at the moment of startup.

However, this doesn’t mean that the heavier something is, the harder it is to push.

If the casters are properly matched as a whole, even heavy equipment can maintain good start-up performance.

II. Wheel Surface Material

The manner in which the wheel surface contacts the ground affects the resistance during startup.

A wheel with higher elasticity can cushion vibrations, but under certain operating conditions, its starting resistance may be relatively greater; by contrast, a harder wheel typically rolls more easily on smooth surfaces.

Therefore, when selecting wheel materials, one should consider noise reduction, shock absorption, floor protection, and start-up performance in a balanced manner, rather than focusing on just a single criterion.

III. Bearing Condition

The smoother the bearing, the easier it is for the wheel to start spinning.

If dust or debris enters the bearing, or if it is left without maintenance for an extended period, internal friction will increase.

Many companies find that equipment is becoming increasingly difficult to deploy; in reality, what’s really increasing is the initial resistance to adoption, not the equipment’s weight.

IV. Ground Conditions

Rough concrete floors, rubber mats, ramps, and the like can all increase the difficulty of initiating movement.

The same set of casters can deliver a vastly different starting experience on different surfaces.

Therefore, caster selection must be based on the actual operating environment.

Why do devices that frequently start and stop place greater emphasis on starting torque?

If the device moves only a few times per day, the impact of the starting force may not be significant.

However, for high-frequency mobile equipment, each start-up requires additional physical effort from the operator.

For example:

• Warehouse logistics turnover cart;
• Factory delivery cart;
• Medical care trolley;
• Foodservice equipment;
• Automated auxiliary tooling.

These devices may need to perform a large number of start-up operations each day.

If the starting resistance is too great, it not only reduces operational efficiency but also increases operator fatigue.

Accordingly, an increasing number of companies are making “effort-saving” a key criterion in caster selection, rather than focusing solely on load capacity.

How can we reduce the difficulty of device startup?

To make your device easier to start, you can take the following steps.

Choose the wheel diameter appropriately.
Larger wheel diameters generally make it easier to roll over small obstacles, helping to enhance the riding experience.

Select wheel materials based on the ground conditions.
Different floor surfaces call for different wheel‑tire materials, and both rolling performance and real‑world operating conditions should be taken into account.

Keep the bearings in good condition.
Regularly clean and inspect the casters to prevent debris from entering the bearings or swivel mechanism.

Avoid prolonged overloading.
Continuous operation under high load not only shortens the service life but also increases resistance during startup.

Optimize the equipment’s center of gravity.
Properly distributing the load ensures more balanced force on each caster, helping to reduce the overall effort required to initiate movement.

A common misconception often overlooked in procurement

Many procurement professionals tend to compare:

Which has greater load-bearing capacity?
Who offers the lower price?
Who has the larger wheel diameter?

Yet little consideration is given to how the equipment is actually used.

If a device needs to be started up hundreds of times each day, what operators care about most is often not how much weight the casters can handle, but rather… Is it tiring to push it? 。

Therefore, when selecting casters, it may be helpful to reframe the issue as follows:

How many times does this equipment need to be started in a day?
Who is driving it?
How far do you need to move?
Is it on a level surface, or in complex working conditions?

These issues are more meaningful than simply comparing parameters.

Written at the end

The value of industrial casters lies not only in their ability to support equipment, but also in making it easier and more efficient to move.

Although the starting force is not as conspicuous as wheel diameter or load capacity, it directly affects the very first step of every push.

For enterprises, the reduction goes beyond just a few kilograms of thrust—it also translates into lower labor intensity, reduced operator fatigue, and improved operational efficiency over the long term.

Truly professional caster selection goes beyond simply ensuring the equipment can move—it also requires careful consideration of the equipment itself. Whether it’s easy to move, whether you’re willing to move, and whether you can do so effortlessly over the long term.