YN12B02412P1 High precision heavy equipment pin excavator bucket pin suitable for KOBELCO 200/210

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KOBELCO pin and bushing
OEM	NAME	OEM	NAME	OEM	NAME
YN02B01720P1	PIN	LC02B01911P1	PIN	YN01V01109P1	BUSHING
YN02B01719P1	PIN	LC02B01774P1	PIN	LB01V01009P1	BUSHING
YN02B01721P1	PIN	LC12B11112P1 /LC12B11113P1	PIN	2438U1104S28	BUSHING
YN02B01839P1	PIN	LC12B02588P1	PIN	YN12B024052P1	BUSHING
YN12B02415P1/ YN12B02415P2	PIN	LC02B01784P1	PIN	2438U959S22	BUSHING
YN12B02413P1	PIN	LC12B01789P2	PIN	YN12B02404P1J1R	BUSHING
YN12B11272P1/ YN12B02403P1	PIN	LC12B02592P1	PIN	YN12B02403P1J1R	BUSHING
YN12B02412P1	PIN	LC12B11136P1	BUSHING	YN12B02405P1J1R	BUSHING
YN12B02407P1	PIN	LC12B01763P1J1R	BUSHING	YN12B02285P1	BUSHING
YN02B02495P1	PIN	LC12B01781P1J1R	BUSHING	YN52F01582P1	BUSHING
YN12B11527P1	PIN	LC12B02199P1	BUSHING	YN12B11628P1	BUSHING
LC02B01903P2 / LC02B01904P3	PIN	LC12B01761P1J1R	BUSHING	LC52F02185P1	BUSHING
LC02B01912P1 / LC02B01913P1	PIN	YN52F02646P1	BUSHING

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>> Premium Materials for Durability and Strength

• High-quality carbon structural steel

• 45 steel: This is the most commonly used medium-carbon high-quality carbon structural steel. It has high strength and good cutting performance. After appropriate heat treatment, such as quenching and tempering, it can obtain a certain balance of strength, hardness and toughness, which can meet the use requirements of excavator bucket pins under general working conditions. It is often used for bucket pins with relatively small working loads that are not particularly demanding on performance requirements.

• Alloy structural steel

• 40Cr: This is the most commonly used alloy structural steel. It has good comprehensive mechanical properties and has higher strength, hardenability and wear resistance than 45 steel. After quenching and tempering treatment, it can obtain higher strength and hardness while maintaining good toughness, and is suitable for excavator bucket pins that bear large loads and impacts. Under the working conditions of Kobelco 200/210 excavators, bucket pins made of 40Cr can better cope with various complex working conditions.

• 42CrMo: It is an ultra-high-strength alloy structural steel with higher strength, toughness and fatigue resistance than 40Cr. It has good hardenability and can obtain uniform structure and performance on larger parts. For medium-sized excavators such as Kobelco 200/210, bucket pins made of 42CrMo are often used in some high-intensity working environments or when the bucket pin reliability is extremely high, to ensure that it will not deform or break during long-term use.

• Surface treatment related materials

• Chromium plating materials: In order to improve the surface hardness, wear resistance and corrosion resistance of the bucket pin, hard chrome plating is usually performed on its surface. The chrome plating layer not only has high hardness, can effectively reduce the friction coefficient with other parts and reduce wear, but also has good chemical stability, which can prevent the pin from rusting.

• Carburizing materials: Carburizing is a commonly used surface strengthening process. For some bucket pins that require high surface hardness and wear resistance, carburizing treatment is used. During the carburizing process, carbon atoms penetrate into the surface of the steel to form a high-carbon carburized layer. Then, through subsequent treatments such as quenching and low-temperature tempering, the carburized layer obtains high hardness, high wear resistance and good contact fatigue resistance, while the core still maintains good toughness. Commonly used carburizing agents include gas carburizing agents (such as methane, propane, etc.) and solid carburizing agents (such as a mixture of charcoal and catalysts).

YN12B02412P1 High precision heavy equipment pin excavator bucket pin suitable for KOBELCO 200/210

• Raw material preparation

• Material selection: According to the product design requirements, select suitable steel, such as 40Cr, 42CrMo and other high-quality alloy structural steel to ensure that the material has good strength, toughness and wear resistance.

• Inspection: Strict inspection of the purchased steel, including chemical composition analysis, mechanical property testing, hardness testing, etc., to ensure that the quality of the raw materials meets the standards.

• Cutting: According to the size specifications of the bucket pin, use sawing machines, flame cutting machines and other equipment to cut the steel into suitable blanks. The size of the blank should take into account the subsequent processing allowance.

• Mechanical processing

• Rough processing: The forged blank is subjected to rough processing such as rough turning and rough milling to remove most of the allowance and initially form the shape of the bucket pin, leaving a processing allowance of 0.5mm-1mm for subsequent fine processing.

• Fine processing: Use high-precision lathes, grinders and other equipment for fine processing to ensure the dimensional accuracy and surface roughness of the bucket pin. The machining accuracy of key dimensions such as diameter, length, cylindricity, etc. can be controlled within ±0.01mm, and the surface roughness reaches Ra0.8-Ra1.6μm.

• Drilling and reaming: According to the design requirements, the corresponding mounting holes and positioning holes are processed on the bucket pin, and the drilling machine and reaming machine are used for processing to ensure the dimensional accuracy and position accuracy of the holes.

• Heat treatment

• Quenching: The bucket pin after machining is quenched, heated to above the critical temperature, and then quickly cooled after a certain period of insulation, so that the steel obtains martensitic structure and improves hardness and strength. The quenching heating temperature is generally 850℃-880℃, and the cooling medium can be oil or water.

• Tempering: There is a large internal stress inside the bucket pin after quenching, and tempering treatment is required to eliminate the internal stress, stabilize the structure and size, and improve toughness. The tempering temperature is usually between 550℃-650℃, and the tempering time is determined according to the specific material and performance requirements.

• Surface treatment

• Hard chrome plating: A layer of hard chrome is plated on the surface of the bucket pin using an electroplating process. The plating solution generally includes chromic anhydride, sulfuric acid, etc. Hard chrome plating can improve surface hardness and finish, reduce friction coefficient, and enhance wear resistance and corrosion resistance. The thickness of the chrome plating layer is generally 0.02mm-0.05mm.

• Blackening treatment: The bucket pin is placed in a blackening solution containing sodium hydroxide, sodium nitrite and other ingredients, and a chemical reaction is carried out at a certain temperature to form a black oxide film on the surface, which plays a role in rust prevention and beauty. The blackening temperature is generally 135℃-145℃.

FAQs 

Q1: What is the typical lifespan of the Custom Steel Excavator Pin for Hitachi 200?
A1: Our hardened excavator pins are built for extended durability, offering high performance over time with proper maintenance.

Q2: Do you offer Custom Excavator Pins for other Hitachi models?
A2: Yes, we specialize in custom steel pins for a range of Hitachi models. Contact us to get the perfect match for your equipment.

Q3: How does the hardened steel pin shaft improve excavator performance?
A3: The hardened steel pin shaft enhances wear resistance and load-bearing capacity, improving performance in demanding construction and mining operations.

Q4: Can your Custom Excavator Pins be used for both construction and mining?
A4: Our custom steel pins are designed to handle heavy-duty tasks across industries such as construction, mining, and earth-moving.

Q5: How do I place a bulk order for the Custom Steel Excavator Pin?
A5: Get in touch with us for bulk orders, and we will provide a personalized quote and production timeline for your custom pin shafts.

Q6: What quality control measures do you implement for Custom Excavator Pins?
A6: Our custom pins go through rigorous quality control, ensuring strict adherence to specifications, material standards, and durability for optimal performance.

Q7: Can I choose specific materials for the Custom Steel Pin?
A7: Yes, we offer various materials such as 45C, 41Cr4, and 42CrMo4, allowing you to select the ideal material for your excavator pin requirements.

Q8: How can I ensure the Custom Steel Excavator Pin fits my Hitachi equipment perfectly?
A8: Our custom steel pins are made to precise dimensions, and we offer tailored solutions to guarantee a perfect fit for your Hitachi 200 excavator.