4352398 High Precision Heavy Equipment Bushing Excavator Bucket Bushing Suitable for Hitachi 200 /200-3 /200-3G/200-5G/200-5A

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>> Product Raw Material

Steel

Composition: Based on iron, it contains a certain amount of carbon, and may also contain alloy elements such as chromium, molybdenum, and manganese, such as 40Cr, 42CrMo and other alloy steels.

Features: It has high strength, high hardness and good toughness, and can withstand large loads and impact forces. After proper heat treatment and surface treatment, the steel bushing can obtain excellent wear resistance and corrosion resistance, which can meet the use requirements of the excavator bucket under high-intensity working conditions.

4352398 High Precision Heavy Equipment Bushing Excavator Bucket Bushing Suitable for Hitachi 200 /200-3 /200-3G/200-5G/200-5A

Raw material preparation

Material selection: According to the performance requirements of the product, select suitable metal materials, such as bronze, 40Cr steel, etc., and ensure that the materials have quality certificates, and check whether the hardness, chemical composition and other indicators of the materials meet the standards.

Cutting: According to the design size and weight requirements, use cutting equipment (such as sawing machine, flame cutting machine, plasma cutting machine, etc.) to cut the raw materials into suitable blanks. The size of the blank is usually slightly larger than the size of the final product to leave a processing allowance.

Machining

Rough machining: The bushing blank after forging or casting needs to be rough machined to remove most of the allowance and approach the final size. Rough machining usually includes turning the outer circle, boring the inner hole, milling the end face and other processes. The equipment used includes ordinary lathes, boring machines, milling machines, etc. Rough machining can leave a machining allowance of 0.5-1mm for subsequent fine machining.

Fine machining: The bushing after rough machining is finely machined to ensure dimensional accuracy and surface quality. Finishing includes finishing the outer circle, finishing the inner hole, grinding and other processes, and may use CNC lathes, CNC boring machines, grinders and other precision processing equipment. For high-precision bushings, the dimensional tolerance of the inner hole and the outer circle can be controlled within ±0.01mm, and the surface roughness can reach Ra0.8-Ra1.6μm.

Drilling and tapping: According to the design requirements of the bushing, drilling and tapping operations are performed using drilling machines, tapping machines and other equipment to process various hole systems and threads such as mounting holes and oil holes.

Heat treatment

Quenching: Heat the bushing to above the critical temperature, keep it warm for a certain period of time, and then cool it quickly to increase the hardness and strength of the bushing. Quenching media usually include water, oil, brine, etc. Different materials and products require different quenching media and quenching process parameters.

Tempering: There is a large internal stress inside the bushing after quenching, and it is more brittle, so tempering treatment is required. Tempering is to heat the bushing to a certain temperature range below the critical temperature, keep it warm for a certain period of time, and then slowly cool it to eliminate internal stress, reduce brittleness, stabilize the structure and size, and improve the toughness and comprehensive performance of the bushing.

Surface treatment

Phosphating: Phosphating is to form a layer of phosphate chemical conversion film on the surface of the bushing, which can improve the corrosion resistance, lubricity and wear resistance of the bushing. The phosphating process includes degreasing, rust removal, surface conditioning, phosphating, passivation and other processes.

Blackening treatment: Blackening treatment is to form a layer of black oxide film on the surface of the bushing, which is mainly used to improve the appearance quality and certain corrosion resistance of the bushing. Commonly used blackening methods are alkaline oxidation and acid oxidation.

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.