What Is a Brake Unloaded Caster (Sit Move Caster)?

The Smart Safety Standard for Modern Office Chairs

1. Office Safety Starts with the Details

In today’s modern office environments, especially open-plan workspaces, employees move around frequently. But even something as small as a rolling chair can become a hazard.

Picture this: an employee returns from a short break and sits down without noticing the chair has been unintentionally moved. Without support, they fall directly onto the floor, leading to tailbone injuries or worse.

To address this concern, many European countries, particularly Germany, have adopted office chairs equipped with Brake Unloaded Casters, also known as Safety Casters or Sit Move Casters, as a standard. These casters are designed in compliance with EN 1335, the European safety standard for office chairs.

2. How It Works: The Chair Only Moves When You Sit

Brake Unloaded Casters function on a simple but effective principle:
The chair stays locked when not in use and only becomes mobile when someone is sitting on it.

• No weight on chair → wheels are automatically locked

• With weight (when seated) → wheels unlock and roll smoothly

This mechanism helps prevent accidental chair movement and ensures the chair is ready to move only when intended. It offers both safety and control, especially in high-traffic office areas.

3. Why European Office Chairs Require Safety Casters

The widespread adoption of Brake Unloaded Casters in Germany and across the EU is backed by key industry standards:

• EN 1335 – European standard for office chairs

• DIN 4551 – German specification for swivel chairs

These standards state:

• Office chairs must not roll away unintentionally when unoccupied

• Casters must include safety features to prevent sudden movement

• Especially important in open-plan offices to avoid user injury

Brake Unloaded Casters are no longer an optional add-on—they are a safety necessity. Major German office chair manufacturers already incorporate them as a default in their mid-to-high-end product lines.

4. Who Needs This Type of Caster?

Brake Unloaded Casters are ideal for any setting where:

• The chair needs to be stationary when not in use, and

• Mobile only when someone is seated

Recommended applications include:

• Open-plan office task chairs

• Customer service or workstation seating

• Meeting room or hot-desking chairs

• Industrial or lab chairs requiring high positional stability

• Ergonomic chairs for senior employees

• Shared desks in co-working environments

These settings often involve high foot traffic, frequent seat changes, and an increased risk of accidental falls. Safety casters significantly reduce that risk.

5. Why Choose Enjoying Go’s Safety Casters?

• Designed in line with EN 1335 and DIN 4551 standards

• Tested for dynamic weight load and rolling performance

• OEM/ODM customization available for different chair designs

• Multiple installation options: thread stem, grip ring stem, top plate

• Available in popular sizes like 60mm, 65mm, and 75mm

Whether you're a chair manufacturer, workspace planner, or equipment supplier, Enjoying Go can support your next project with high-quality, safety-focused caster wheels.

6. Experience European-Level Safety Today

Looking to meet EU office chair safety standards?
Want to enhance workplace safety without compromising mobility?

Contact Enjoying Go to request samples, product specifications, or pricing details.
Let’s make your seating safer—one caster at a time.