YPZ2 Electric Hydraulic Arm Disc Brake

YPZ2 Series Ⅰ, Ⅱ, Ⅲ Electro-Hydraulic Caliper Disc Brakes

Overview and Working Principle

The YPZ2 series electro-hydraulic disc brake is a high-performance, multi-functional advanced product. Equipped with the sophisticated functions of automatic brake clearance equalization and automatic brake pad wear compensation, and paired with the Ed series thruster manufactured with German technology, it ensures safe and reliable operation, requires no routine maintenance, and can also deliver the required interlock signal to the host system via the installation of a travel switch. This brake is widely suitable for deceleration, braking, and safety protection applications in industries including material handling machinery, hoisting machinery, metallurgy, and port terminals.

 

Its working principle is as follows: When the host mechanism loses power and ceases operation, the brake's actuator (thruster) will also lose power (or power off with a delay) and stop generating thrust. At this point, the spring force of the brake's compression springs is transmitted to the brake pads via the two brake arms, forcing the pads to exert a specified pressure on the brake disc and generate a defined braking torque, thus achieving the braking effect. When the host mechanism is powered on again, the brake's actuator is energized simultaneously and rapidly generates sufficient thrust to push the push rod upward. This action further compresses the brake springs and forces the two brake arms to expand outward, causing the brake pads to disengage from the brake disc. As a result, the pad pressure and braking torque are eliminated, and the braking effect is released.

 

 

• Environmental Temperature: -20 ℃ ~ 50 ℃. For applications where the ambient temperature falls below -20 ℃, the working oil of the thruster shall be replaced with YH-10 aviation hydraulic oil, or a heater shall be installed as required.

• Operating Environment: The surrounding operating environment must be free of flammable, explosive or corrosive gases, and the relative air humidity shall not exceed 90%. For outdoor installations exposed to rain and snow, or locations with corrosive gases and media, corrosion-resistant product variants are required.

• Power Supply Requirements: The brake is generally powered by a three-phase AC supply with a voltage of 380 V and a frequency of 50 Hz. Products compatible with 60 Hz power supply or alternative voltages can be customized upon request, provided that such requirements are clearly specified when placing orders.

• Altitude Limit: The installation altitude shall comply with the provisions of GB 755-2000 standard.

Note: Specific models and structural dimensions are subject to modification without prior notice.

FAQ

Q: How to Replace the Brake Pads of the YPZ2 Series Electro-Hydraulic Caliper Disc Brake?

A: The brake pads of the YPZ2 series brake are asbestos-free and feature a plug-in design. Prior to replacement, ensure that the equipment is in a safe shutdown state and that the brake system pressure has been relieved completely. Locate the brake pad insertion slots, which are typically secured by retainer clips, bolts, or other corresponding fasteners. Remove the fastening components, then extract the worn brake pads from the mounting slots. Insert the new brake pads in the correct orientation, verify that they are fully seated in position, and reinstall and tighten all relevant fasteners.The entire replacement process is relatively straightforward and does not require specialized tools. However, care should be taken to avoid damaging the new brake pads during installation. In addition, ensure that all components are securely fastened to prevent loosening during equipment operation.

Q: Can the YPZ2 Series Electro-Hydraulic Caliper Disc Brake Be Used in Outdoor Environments?

A: This brake series is suitable for outdoor applications, provided that relevant environmental conditions are strictly observed. The YPZ2 series has a rated operating temperature range of -20 °C to 50 °C, with a maximum allowable relative air humidity of 90%. Normal operation is achievable when the outdoor environment falls within the aforementioned temperature and humidity parameters, and is free of flammable, explosive or corrosive gases.In cases where the ambient temperature drops below -20 °C, the working oil of the thruster shall be replaced with YH-10 aviation hydraulic oil, or a heater shall be installed as required. For outdoor installations exposed to rain, snow or corrosive gases and media, corrosion-resistant product variants must be selected. These measures are essential to ensure the stable and reliable operation of the brake, and to prevent premature failure caused by severe environmental conditions.

Q: What Measures Should Be Taken if the Braking Torque of the YPZ2 Series Electro-Hydraulic Caliper Disc Brake Decreases During Operation?

A: First, inspect the wear condition of the brake pads, as excessive wear can directly lead to reduced braking torque. Replace the brake pads with new ones promptly if they have worn to the limit. Second, check the brake springs for faults such as fatigue or breakage. If a spring failure is detected, select and install a replacement spring that matches the brake model specifications.

In addition, verify the operational status of the thruster, since thruster malfunctions (e.g., internal hydraulic oil leakage, motor failure) can result in insufficient thrust output and thus compromise braking torque. Repair or replace the faulty components based on the specific issue identified. Finally, confirm the stability of the brake installation. Loose mounting can also cause fluctuations in braking torque; retighten all mounting bolts and ensure the brake is positioned accurately.

Q: How to Select the Thruster for the YPZ2 Series Electro-Hydraulic Caliper Disc Brake?

A: Thruster selection is primarily determined by the required thrust and stroke of the brake system. Different models of the YPZ2 series brake are compatible with thrusters of specific thrust ratings. Typical examples include the Ed23/5, which corresponds to thrust rating 23 (220 N), and the Ed301/6, which corresponds to thrust rating 301 (3,000 N).

When selecting a thruster, calculate the required thrust based on key brake parameters, including the actual operating load, brake disc diameter, and specified braking torque. Simultaneously, verify that the thruster stroke meets the travel requirements for the brake's normal opening and closing cycles. In addition, the thruster type should be matched to the service environment, taking into account factors such as ambient temperature and explosion-proof requirements. For instance, explosion-proof thruster variants shall be selected for applications where explosion-proof specifications are mandated.

Q: How to Operate the Manual Release Mechanism of the YPZ2 Series Electro-Hydraulic Caliper Disc Brake?

A: The manual release mechanisms of the YPZ2 series brakes are generally classified into three types: left-hand operation (S1), right-hand operation (S2), and top-hand operation (S3). Prior to operation, confirm that the equipment is in a safe standby state to prevent unintended movement during the manual release process.

Taking the commonly used left-hand and right-hand release mechanisms as an example: locate the manual release lever (typically a rotatable or pull-type component), then rotate or pull the lever in the direction indicated by the markings. This action will overcome the force exerted by the brake springs and spread the brake arms apart, thereby achieving manual release of the brake. During operation, movements should be smooth and steady; avoid applying excessive force, which could lead to component damage. After the operation is completed, reset the manual release mechanism to its original position to ensure the brake functions normally when powered on again.

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