Brake Mechanism for Furniture Casters

Product Specifications

Technical details and manufacturing context for Brake Mechanism

Definition

The brake mechanism is a critical safety and stability component within a furniture caster assembly. Its primary role is to engage with the caster's wheel or axle to create sufficient friction or a physical lock, thereby immobilizing the furniture piece on a surface. This prevents rolling due to slopes, vibrations, or accidental contact, ensuring the furniture remains stationary when required, such as for safety, precise positioning, or during use. The mechanism typically involves a lever, pedal, or twist-lock that the user actuates. This action either presses a brake pad directly against the wheel tread (friction brake) or engages a cam or pin into a notch on the wheel hub or a stationary part of the caster fork (positive lock brake). Releasing the lever disengages the brake, allowing the wheel to rotate freely again. The brake mechanism is designed for use in furniture casters with wheel diameters ranging from 40 to 75 mm, and it supports a maximum load per caster of 80 to 300 kg. The brake holding force, which is the force required to prevent wheel rotation, ranges from 200 to 600 N. The torque required to disengage the brake is between 1.5 and 3.5 N·m. The mechanism operates within a temperature range of -20 to 60 °C and a non-condensing humidity range of 30 to 80 % RH. It is available with ingress protection ratings from IP20 to IP40, as per IEC 60529. Materials used include steel, zinc alloy, nylon, and rubber. Steel structural parts are typically of grades Q235 to Q345, as per GB/T 700. Surface treatment for corrosion resistance is zinc-nickel, as per ASTM B841. The weight of the brake mechanism is between 0.15 and 0.45 kg. These values are reference ranges for directory purposes; actual specifications must be confirmed with the legal manufacturer or supplier for the specific model and application.

Working Principle

The brake mechanism operates through a user-actuated lever, pedal, or twist-lock. When engaged, it either presses a brake pad against the wheel tread (friction brake) or inserts a cam or pin into a notch on the wheel hub or caster fork (positive lock brake). This action creates friction or a mechanical lock, preventing wheel rotation. Releasing the actuator disengages the brake, allowing free rotation. The mechanism is designed to provide a holding force of 200–600 N and requires a release torque of 1.5–3.5 N·m.

Common Materials

Steel, Zinc Alloy, Nylon, Rubber

Technical Parameters

Parameter	Typical range	Notes & selection driver
Load Capacity	80–300 kg	Maximum load per caster
Wheel Diameter	40–75 mm	Common sizes for furniture casters
Brake Holding Force	200–600 N	Force required to prevent wheel rotation
Brake Release Torque	1.5–3.5 N·m	Torque to disengage the brake
Operating Temperature	-20–60 °C	Beyond this range, brake performance may degrade
Humidity Range	30–80 % RH	Non-condensing conditions
Ingress Protection	IP20–IP40	Higher IP for dusty or wet environmentsIEC 60529
Material Grade	Q235–Q345	Steel for structural partsGB/T 700
Surface Treatment	Zinc–Nickel	Corrosion resistanceASTM B841
Weight	0.15–0.45 kg	Per brake mechanism

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Brake Lever/Pedal Part
User interface for applying and releasing the braking force.

Material: Zinc Alloy or Steel
Brake Pad/Shoe Part
The friction element that contacts the wheel to stop rotation.

Material: Rubber or Composite Friction Material
Engagement Pin or Cam Part
In positive lock designs, this part physically interlocks with the wheel to prevent movement.

Material: Steel
Spring Part
Returns the lever to the disengaged (released) position and may assist in maintaining engagement pressure.

Material: Spring Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Furniture Caster

View system integration details

Manufacturers of Brake Mechanism

Manufacturer profiles associated with Brake Mechanism.

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Frequently Asked Questions

What is the function of a brake mechanism in a furniture caster?

The brake mechanism locks the caster wheel to prevent unwanted movement, ensuring the furniture remains stationary when needed, such as on slopes or during use.

What are the common types of brake mechanisms?

There are two main types: friction brakes, which press a pad against the wheel tread, and positive lock brakes, which engage a pin or cam into a notch on the wheel hub or fork.

What are the typical load and wheel diameter ranges for these mechanisms?

The maximum load per caster is typically 80–300 kg, and the wheel diameter ranges from 40–75 mm. These are reference ranges; confirm with the manufacturer for specific models.

What environmental conditions can the brake mechanism withstand?

It operates in temperatures from -20 to 60 °C and humidity from 30 to 80 % RH (non-condensing). Ingress protection ratings range from IP20 to IP40, depending on the model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	N/A (mechanical load only)
other spec:	Max load capacity: 50-150 kg per caster, Wheel diameter: 25-100 mm
temperature:	-20°C to 80°C

Brake Mechanism

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