ᐅ My set of caster wheels for the Kallax shelf cannot support the total weight – any alternatives?

Hello everyone,

Some time ago, I bought a set of casters for my IKEA Kallax shelving unit to make it more flexible and mobile. However, I’ve now realized that the casters don’t really support the total weight, especially when the shelf is fully loaded.

I otherwise like the shelving unit very much and don’t really want to switch to a different solution, but it needs to remain stable, and the casters should be able to handle the weight without any issues.

My question is: What alternatives to the current caster set are there that reliably work with higher loads? Are there specific materials, weight capacities, or brands you would recommend? And how have you specifically dealt with this for your Kallax unit if you want it to stay mobile but also carry heavy loads?

I look forward to your experiences and tips!

MAY40 schrieb:
What alternatives are there to the current set of casters that work reliably with higher weights?

Basically, the load capacity is limited when it comes to the Kallax casters. IKEA casters are usually designed for loads of up to about 15 kg (33 lbs) per caster.

One solution is to switch to heavy-duty polyamide or steel casters with stainless steel axles, which can carry up to 50 kg (110 lbs) per caster. These are available at hardware stores or online. It is important to pay attention to the mounting height and attachment method, as otherwise the casters may not fit.

Alternatively, furniture glides with similar load capacity can be combined with small heavy-duty casters. Some users also install a base plate under the cabinet to better distribute the load.

I recommend checking the maximum load capacity of the cabinet itself before purchase to avoid damage from excessive weight.

Heavy-duty casters, preferably made of steel or polyamide, are the best choice. Make sure they have a load capacity of at least 40 kg (88 lbs) per caster.

The shelf can often be stabilized by adding extra reinforcements.

I understand how frustrating it is when the Kallax with casters doesn’t live up to expectations. I had similar issues and was often unsure whether I was simply overloading it or if the problem was with the casters themselves.

What helped me: besides switching to more durable casters, I also screwed wooden slats to the underside to support the casters. This way, the load is distributed more evenly and the weight is better supported.

Maybe this combination will help you too. If you move the shelf frequently, it might also be worth considering placing the heaviest items as low as possible in the unit. I found that this really helps reduce stress on the casters and also protects the Kallax structure.

Don’t feel alone with this problem—this happens more often than you might think 🙂

zarJody68 schrieb:
I recommend checking the maximum load capacity of the cabinet yourself before purchasing to avoid damage from excessive weight.

I completely agree with this. One critical point that is often overlooked: many users simply multiply the maximum load per caster by four and assume the shelf can handle that weight.

The actual load capacity of the Kallax unit itself is usually around 30-40 kg (66-88 lbs) per shelf, depending on whether and how it is reinforced.

If the casters are stronger but the shelves bend or the wood splits under the load, the strongest casters won’t help.

That means, before investing in expensive casters, I would suggest considering reinforcing the shelf with additional braces or sturdy shelves made of plywood or MDF. Alternatively, securing the shelf to the wall with brackets if it doesn’t need to be movable.

If mobility is absolutely necessary, only industrial-grade casters will suffice—but only if the shelf itself is designed for that.

Unfortunately, many tend to fixate on one symptom (the casters) instead of looking at the entire construction.

MAY40 schrieb:
What alternatives to the current caster set are available that also work reliably with higher weights?

A very good alternative is heavy-duty casters with ball bearings, made from polyurethane or rubber to allow loads over 50 kg (110 lbs) while protecting the floor.

Brands like Tente, Colson, or Blickle offer models designed for mobile furniture and have designs compatible with Kallax, such as casters with mounting plates for screwing on. It is important during installation to ensure precise positioning of the fastening screws so the load capacity is distributed optimally.

Additionally, it is advisable to check the existing hole pattern, as some casters require specific drilling.

For easy installation and high load capacity, I would recommend caster heights of around 10 cm (4 inches) to provide some ground clearance while maintaining stability.