Fuwa break adjusting arm

Fuwa Brake Adjustment Arm

1. Function

• Automatic Clearance Adjustment:

The Fuwa brake adjustment arm (especially the automatic type) automatically adjusts the clearance between the brake shoe and the brake drum based on wear conditions. This ensures that the brake clearance remains within the correct range without manual intervention.

• Enhanced Braking Reliability:

By maintaining a consistent brake clearance, the adjustment arm ensures a short stroke of the brake slave cylinder pushrod and rapid, reliable braking, thereby improving braking performance and safety.

• Extended Component Lifespan:

It reduces the consumption of compressed air, prolonging the service life of components such as the air compressor and brake slave cylinder. Additionally, it lowers material consumption and extends the lifespan of braking components.

2. Specifications

(Note: Specific dimensions may vary by model; the following are general descriptions.)

• Mounting Type:

Typically designed for specific trailer or truck axle configurations, with flange or bolt-on mounting options.

• Adjustment Mechanism:

• Automatic Type: Uses a worm gear or ratchet mechanism to adjust clearance in response to wear.

• Manual Type: Requires periodic manual adjustment (less common in modern designs).

3. Material

• High-Strength Steel:

The main body is often made of forged or cast high-strength steel to withstand the mechanical stresses of braking.

• Corrosion-Resistant Coatings:

Zinc plating, powder coating, or other anti-corrosion treatments are applied to resist rust and environmental damage.

• Lubricated Components:

Internal gears or moving parts may be pre-lubricated with high-temperature grease to ensure smooth operation.

4. Key Parameters

• Torque Rating:

The adjustment arm must withstand a specified torque (e.g., 200–400 N·m) during braking to ensure reliable operation.

• Adjustment Accuracy:

The mechanism should maintain clearance within ±0.1 mm of the target value to prevent brake drag or inadequate braking.

• Temperature Tolerance:

Operates effectively in temperatures ranging from -40°C to +120°C (-40°F to +248°F) to withstand extreme conditions.

• Cycle Life:

Rated for ≥500,000 braking cycles without failure, ensuring durability in heavy-duty applications.

• Weight:

Typically weighs 2–5 kg (4.4–11 lbs), depending on size and design.

5. Additional Features

• Self-Locking Mechanism:

Prevents unintended clearance changes due to vibrations or reverse torque.

• Easy Maintenance:

Designed for quick inspection and replacement of wear parts (e.g., adjustment springs, gears).

• Compliance with Standards: