YP21 - 500 - 560*30 - IIB - HL.WL.RL is a member of the YP21 series electro - hydraulic disc brakes. The code behind the model may represent functional configurations such as explosion - proof grade and detection switches. It has outstanding advantages like convenient maintenance, high operational reliability, and strong corrosion resistance. It is widely used in multiple industrial fields. The detailed introduction to its advantages and usage is as follows:
Core Advantages
Low maintenance difficulty and reduced daily workload
It is equipped with an interlocking clearance equalization device and an automatic shoe positioning device. These two devices can keep the clearance of the brake shoes on both sides balanced without manual adjustment, avoiding the problem of one brake pad sticking to the brake disc due to uneven clearance. In addition, the stepless wear automatic compensation device can maintain the shoe clearance and braking torque constant during use, eliminating the trouble of frequent manual adjustment.
The main swing hinge points of the brake are all equipped with self - lubricating bearings. They have high transmission efficiency and flexible movement. No additional lubrication operations are needed during the entire service cycle, which greatly reduces the daily maintenance steps. The brake lining adopts a plug - in structure. When replacement is required, it can be completed quickly without complex disassembly work.
High operational safety and stable performance
The braking spring of this brake is arranged in a square tube, and there is a torque scale on the outer wall of the spring tube. Users can directly read the braking torque value, which makes the adjustment of the braking torque intuitive and convenient, and avoids tedious measurement and calculation work. Meanwhile, its closing time is only 0.25 - 0.4 seconds, and the braking response is fast, which can promptly stop mechanical equipment in an emergency.
It supports the configuration of various limit switches such as release limit switches, closing limit switches, and lining wear limit switches. These switches can send out corresponding signals according to the working state of the brake. For example, when the brake lining is worn to the limit, the wear limit switch will send an alarm signal, which is convenient for the host PLC to achieve interlocking protection and ensures the safe operation of the equipment.
Strong environmental adaptability and long service life
All non - main load - bearing bolt connectors of the brake are made of stainless steel, and the pins are either surface - strengthened with anti - corrosion treatments such as hard chrome plating or made of stainless steel. This excellent anti - corrosion design enables the brake to operate stably in harsh environments with high humidity or slight corrosion.
The brake lining provides multiple material options such as powder metallurgy and semi - metallic non - asbestos materials. These materials have the characteristics of stable friction coefficient and long service life. Among them, the non - asbestos design also complies with environmental protection requirements. In addition, its driving device adopts an Ed series electro - hydraulic thruster with an F - class insulation level and an IP54 protection level, which has good performance and long service life.
Strong emergency handling capacity
It is equipped with a manual release device as standard. When the power is cut off or the hydraulic system malfunctions suddenly, the operator can manually release the brake to carry out emergency handling such as equipment movement or maintenance, avoiding losses caused by the inability to operate the equipment due to brake failure.
Application and Usage Notes
Typical Application Scenarios
Lifting and transportation machinery: It is suitable for the braking systems of trolleys and main hoisting mechanisms of various large - scale cranes and special cranes. Its fast braking response and stable braking torque can ensure that the crane can stably park and position when lifting heavy objects, preventing safety accidents caused by sliding of the lifted objects.
Port and mining equipment: In port loading and unloading machinery such as container gantry cranes, it can realize efficient braking during the loading and unloading of goods. In mining equipment such as mine belt conveyors, its step - by - step stable braking performance can avoid material backflow caused by sudden stopping of the conveyor belt.
Metallurgical and construction machinery: It can be applied to the braking of metallurgical equipment like continuous casting machines and rolling mills. It can withstand the high - intensity working rhythm in the metallurgical field. Meanwhile, it can also be used in large - scale construction machinery such as tower cranes to provide safe braking protection for the lifting and transportation operations on construction sites.
Key Usage Notes
It is suitable for working environments with an ambient temperature of - 25°C to + 50°C and a relative humidity of no more than 90%. It should be avoided to be used in environments with flammable, explosive, and highly corrosive gases. If it is used outdoors, corresponding waterproof and dustproof protective measures should be taken.
Regularly check the working state of the electro - hydraulic thruster, including the oil level in the thruster and the tightness of the hydraulic pipeline. Oil leakage in the hydraulic system will directly affect the braking effect, so once oil leakage is found, it should be repaired and the oil should be replenished in time.
Although the brake has an automatic wear compensation device, it is still necessary to regularly inspect the wear degree of the brake lining. If the wear exceeds the range allowed by the scale, the brake lining should be replaced immediately to prevent the brake disc from being worn due to excessive wear of the lining.
