The sealing component of the pallet truck is a precision component installed on the core moving parts of the manual hydraulic pallet truck. Its main function is to prevent internal hydraulic oil leakage and block external dust, water vapor, and impurities from entering. Although they are small, they are the key to ensuring the lifting power, smooth descent, and durability of the pallet truck. Once the seal fails, it will cause problems such as insufficient pressure, inability to lift the fork, and hydraulic cylinder leakage, directly affecting the efficiency and safety of the equipment.
Design features and performance requirements:
To cope with the frequent lifting, load impact, and complex warehouse environment of pallet trucks, high-quality seals usually have the following characteristics:
High pressure resistance and extrusion resistance: The sealing element has a high-strength cloth layer or uses special hardness polyurethane material inside, which can withstand hydraulic impact and prevent deformation caused by being squeezed into gaps.
Wear resistance and long lifespan: The lip in contact with the piston rod needs to be smooth and tough to resist long-term reciprocating friction.
Wide temperature range and medium compatibility: It needs to maintain elasticity within the warehouse environment temperature range of -20 ℃ to 80 ℃, and be compatible with hydraulic oil and lubricating grease.
Dustproof and Waterproof: The dust-proof sealing lip design can effectively scrape away dirt and protect internal cleanliness.
Main application scenarios
Seal repair and replacement mainly occur in the following scenarios, which are important business opportunities for you:
Regular maintenance and preventive replacement: In logistics warehouses with high-intensity use, seals are included as vulnerable parts in the regular maintenance plan.
Fault repair: When there are phenomena such as inability to lift, slow lifting, fork self lowering, hydraulic oil leakage, etc., the first step is to investigate and replace the corresponding sealing components.
Equipment refurbishment: When restoring the performance of an old pallet truck, replacing the entire set of hydraulic seals is one of the core tasks.
