4409122 Construction machinery bushings Excavator Bucket Bushing Suitable for Hitachi 200
1. Material selection: According to product requirements, select suitable metal materials, such as 45 steel, 40Cr steel, copper alloy, etc., to ensure that the chemical composition and mechanical properties of the materials meet the standards.
2. Cutting: According to the design size, use cutting equipment to cut the metal raw materials into suitable blanks. Generally, sawing machines, cutting machines and other equipment are used to ensure the dimensional accuracy and surface quality of the blanks.
3. Finishing: Use high-precision lathes, grinders and other equipment for finishing, and accurately process the inner hole, outer circle and end face of the bushing to achieve the dimensional accuracy and surface roughness required by the design. The machining accuracy of the inner hole and outer circle is usually controlled between a few microns and tens of microns, and the surface roughness reaches Ra0.8-Ra1.6μm.
4. Drilling and tapping: According to the design requirements of the bushing, use drilling machines and other equipment to perform drilling and tapping operations to process mounting holes and threaded holes, etc., to ensure the position accuracy of the mounting holes and the quality of the threads.
5. Heat treatment
Quenching: Heat the processed bushing to above the critical temperature, keep it warm for a certain period of time, and then cool it rapidly to change the metal structure and improve the hardness and strength of the bushing. For example, for 45 steel bushings, the quenching temperature is generally 820-840℃, and the cooling medium is usually water or oil.
Tempering: There is a large internal stress inside the bushing after quenching. Tempering treatment can eliminate the internal stress, stabilize the structure and size, and improve the toughness of the bushing. The tempering temperature is determined according to the material and performance requirements, generally between 500-650℃.
6.Surface treatment
Hard chrome plating: In order to improve the wear resistance and corrosion resistance of the bushing, hard chrome plating is often used. Put the bushing in a chrome plating tank and plate a hard chrome layer on its surface through electrolysis. The thickness of the chrome plating layer is generally between 0.02-0.05mm.
Blackening treatment: Blackening treatment can form a black oxide film on the surface of the bushing, which plays a role in rust prevention and beauty. Generally, chemical oxidation method is adopted, in which the bushing is immersed in a solution containing an oxidant to form an oxide film on the surface at a certain temperature and time.
FAQs
Q1: What is the typical application for the High Quality Excavator Bucket Cylinder Upper Pin Shaft?
A1: This pin shaft is specifically designed for excavator bucket cylinders, suitable for high-demand tasks in construction, mining, and heavy machinery operations.
Q2: Can you customize the pin shaft for other machine models?
A2: Yes, we offer full customization services for pin shafts based on your specifications, ensuring compatibility with a wide range of machinery models.
Q3: How do you ensure the durability of your excavator pin shafts?
A3: We use advanced heat treatment processes and high-quality materials to enhance the hardness and wear resistance of the pin shafts, ensuring long-lasting performance.
Q4: What materials are used for manufacturing the pin shaft?
A4: Our pin shafts are made from premium alloys such as 45C, 42CrMo4, and 41Cr4, selected for their durability and ability to withstand heavy-duty use.
Q5: Do you provide after-sales support for your excavator pin shafts?
A5: Yes, we provide comprehensive after-sales support, including product guidance, warranty services, and troubleshooting assistance to ensure continued operation.
Q6: How do I place a custom order for the pin shaft?
A6: Simply provide us with your design drawings or specifications, and we’ll create a customized pin shaft tailored to your exact requirements.
Q7: Can you ship to international locations?
A7: Yes, we can deliver our high-quality excavator pin shafts worldwide, offering efficient shipping and timely delivery to your location.
Q8: Are your pin shafts compatible with other excavator brands?
A8: Our pin shafts are designed for a wide range of excavators, including those from Sany Heavy Industry, but we can also customize them for other brands as needed.
Hitachi pin and bushing
