107-3378 107-8559 Caterpillar J550 Heavy Duty Style Lock & Retainer

107-3378 &107-8559 Bucket Retainer & Lock are accessories designed for Caterpillar J550 buckets. Made of high-strength alloy steel and precision manufacturing technology, the components can provide intermittent locking for bucket teeth under rock drilling conditions, and bucket operations are stable and efficient. Whether it is heavy load or long-term continuous operation of the excavator bucket, the 107-3378/107-8559 bucket retainer and lock achieve excellent durability and reliability, and are efficient components in Caterpillar bucket accessories.

1. High wear resistance: The components are made of high-quality high-strength alloy steel (such as 40Cr), and the metal thickness is increased through processes such as heat treatment and shot peening, which effectively improves wear resistance and significantly extends the service life of the product.

2. Stable locking structure: 107-8559 is a heavy-duty double-coil retainer design that can apply a large locking force to the 107-3378 groove pin. The double-ended chamfered pin 107-3378 can be installed to ensure that the locking structure is tight and reliable, and improve work safety.

3. Easy installation: The chamfered design at both ends of the pin shaft allows the 107-3378 pin to be quickly inserted from either side of the bucket tip, and the 107-8559 retainer can be locked or released with a simple tap.

This product is made of high-strength alloy steel, such as 40Cr alloy steel, which has high hardness and good toughness after quenching and tempering heat treatment. The addition of alloy elements (chromium, molybdenum, etc.) enhances the hardness and wear resistance of the product, and can withstand high impact and high zinc environments. The materials are selected from the country's first-class suppliers. High-quality materials and strict material selection ensure that each retainer and pin shaft has strong wear resistance.

1. Precision forging: Made of high-quality alloy steel, it ensures that the material is dense, uniform and crack-free, providing a precise foundation for subsequent processing;

2. CNC machining: CNC machine tools are used to perform turning, milling, drilling and other finishing processes on forgings to ensure high dimensional accuracy and good docking. Each joint surface is fully matched with the Caterpillar J550 series bucket teeth;

3. Heat treatment: Normalizing or quenching + tempering treatment is performed on the retainer and pin shaft to effectively improve the surface porosity and overall strength, enhance impact resistance, and ensure that it is not easy to deform and break under strong force;

4. Shot peening: The surface adopts shot peening technology, which strengthens the metal surface, improves fatigue strength, and enhances the ability to resist fatigue cracks;

5. Anti-corrosion coating: The surface can be treated with black oxidation, uniform or special coating, and the reinforced anti-rust protective layer prevents metal oxidation in humid and corrosive environments and extends the service life of components.

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