Limit Pin
Ограничительный палец
Pasador de límite
The 319007487 Limit Pin is a precision-machined mechanical stop component engineered for XCMG hydraulic excavators. As a non-engine auxiliary part, this limit pin provides a positive mechanical stop for moving assemblies such as bucket linkages, boom arms, and swing drives, ensuring safe and accurate movement limits. Manufactured from high-strength alloy steel with a hardened surface, the 319007487 limit pin guarantees reliable positioning, exceptional wear resistance, and long service life in the most demanding construction and mining applications.
The 319007487 Limit Pin is designed to withstand the high impact loads and repetitive cycling typical of excavator operations. Its precise diameter and length ensure a perfect fit within the mating bore, eliminating play and ensuring consistent stopping accuracy. This component is a direct OEM replacement, restoring original machine control and preventing over-travel that could damage hydraulic cylinders or structural components.
Crafted from premium-grade alloy steel with a specialised heat treatment, the 319007487 limit pin offers exceptional resistance to deformation, wear, and fatigue. The pin’s surface is precision-ground to achieve a smooth finish, reducing friction with the mating bushing and minimising wear. Its robust construction ensures that the pin maintains its critical stopping function even after thousands of operating hours, contributing to the overall reliability of the machine.
The 319007487 Limit Pin is compatible with a wide range of XCMG excavator models and is designed to operate in various climatic conditions. Its corrosion-resistant coating protects against rust and chemical attack, ensuring long-term reliability. By choosing this genuine XCMG component, operators can ensure that their equipment continues to operate within safe design limits, preventing costly over-travel damage.
Designed for easy installation, the 319007487 limit pin fits precisely into the existing bore, requiring no modifications. Its consistent quality ensures that the machine’s stops are accurately positioned, providing predictable and safe operation. This part is an essential element for maintaining the structural integrity and safety of the excavator, reducing the risk of accidents and unplanned downtime.
The 319007487 Limit Pin is the result of precise engineering, combining exact dimensions with high-strength materials. Its 30 mm diameter and 85 mm length are calibrated to provide an accurate mechanical stop for excavator linkages and cylinders. The pin’s hardened surface (HRC 48–52) offers excellent resistance to indentation and wear, ensuring that the stop remains effective even after repeated impacts. This precision directly contributes to the safety and reliability of the machine, preventing over-travel and reducing stress on structural components.
The pin’s ground surface finish ensures a smooth interface with the mating bushing, minimizing friction and reducing wear on both components. This attention to detail extends the service life of the limit pin and the surrounding hardware, reducing the frequency of replacements and lowering overall maintenance costs.
The 319007487 Limit Pin is designed to withstand the high-impact loads that occur during excavator operation, such as sudden stops of the boom or bucket. Its alloy steel composition, combined with a specialised heat treatment, provides a tough core that absorbs shock without fracturing. The pin’s high fatigue strength ensures that it can endure millions of stress cycles without failure, providing reliable service over the machine’s lifetime. This durability is especially important for excavators used in mining and quarrying, where the equipment is subjected to extreme forces on a daily basis.
One of the primary functions of the 319007487 Limit Pin is to prevent over-travel of hydraulic cylinders and linkages. Over-travel can cause severe damage to cylinders, hoses, and structural parts, leading to costly repairs and extended downtime. This limit pin provides a positive mechanical stop that limits the travel of the moving component, ensuring that it does not exceed the design limits. By replacing a worn or damaged limit pin with a genuine XCMG part, operators can restore the original travel limits and protect their machine from expensive damage.
The pin’s precise length and hard stop surface ensure consistent and repeatable stopping position, which is essential for accurate machine control. This consistency is particularly important for tasks that require precise positioning, such as fine grading or pipe laying.
The 319007487 Limit Pin is protected by a zinc plating that provides a robust barrier against rust and corrosion. This is especially important for machines operating in wet, muddy, or coastal environments, where unprotected steel would quickly degrade. The plating ensures that the pin remains functional and easy to remove during maintenance, even after years of exposure. This corrosion resistance contributes to the overall reliability of the excavator and reduces the risk of pin seizure, which can complicate disassembly and increase repair time.
The 319007487 Limit Pin is specifically designed for XCMG hydraulic excavators, including models such as XE210, XE240, XE305, and other XE series machines. It is used in various mechanical stop applications, such as bucket linkage limit stops, boom cylinder travel limits, and swing drive stops. Its robust construction makes it suitable for heavy-duty applications in mining, quarrying, demolition, and earthmoving.
This limit pin is also compatible with other XCMG equipment, including wheel loaders, crawler cranes, and backhoe loaders that share similar stop configurations. Its standard dimensions and material properties ensure that it can be used as a direct replacement in a wide range of machinery. However, it is always recommended to verify compatibility with the specific machine model and application before ordering.
When replacing a worn or damaged limit pin, using the genuine 319007487 part ensures the correct hardness, diameter, and length. Aftermarket pins may not meet the same strength or wear resistance standards, leading to premature failure and potential safety hazards. Trust only genuine XCMG components to maintain the original protection and performance of your excavator.
Installing the 319007487 Limit Pin is a simple procedure that requires basic hand tools. Before installation, inspect the pin for any shipping damage and clean the bore and surrounding area to remove dirt and debris. Insert the pin into the bore, ensuring it is fully seated and flush with the mating surface. Secure the pin with the retaining hardware as specified in the service manual.
After installation, verify that the limit stop is functioning correctly by cycling the component through its full travel range. Check that the pin engages the stop surface at the correct position and that there is no excessive play or movement. Periodic inspection of the limit pin is recommended during routine maintenance; look for signs of wear, scoring, or corrosion. Replace the pin if any damage is detected to maintain the original travel limits and safety margins.
Keeping a spare 319007487 limit pin in your parts inventory can minimise downtime during unexpected failures. Always use genuine XCMG parts to ensure proper fit and performance.
The 319007487 Limit Pin is manufactured in ISO 9001 certified facilities, adhering to strict quality control procedures. The alloy steel is sourced from approved mills and undergoes chemical analysis and mechanical testing to verify its properties. The machining process is carried out using CNC equipment, ensuring consistent dimensional accuracy and surface finish.
The hardening and grinding processes are carefully controlled to achieve the required hardness and surface finish. Each limit pin is 100% inspected for dimensional accuracy, hardness, and surface roughness. A sample from each batch is subjected to load testing to verify its strength and durability. These quality measures ensure that every pin meets XCMG’s high standards for reliability and performance.
Using genuine XCMG 319007487 Limit Pins guarantees proper fit, performance, and safety. Counterfeit pins may use inferior materials or lack proper heat treatment, leading to premature failure and potential machine damage. Always source genuine parts from authorized XCMG distributors.
The 319007487 Limit Pin is a vital component for ensuring safe and accurate mechanical stops in XCMG hydraulic excavators. As a non-engine auxiliary part, it prevents over-travel of critical assemblies, protecting the machine from costly damage and enhancing operator safety. Its hardened steel construction, precision dimensions, and corrosion-resistant coating make it an indispensable part of the excavator’s control system.
With its high-strength alloy composition and exact OEM fitment, this limit pin offers exceptional durability and performance. Choosing the genuine 319007487 pin protects your equipment from over-travel failures and reduces maintenance costs. Always source genuine XCMG parts from authorized distributors to guarantee authenticity and compliance with OEM specifications.
Whether for planned maintenance or emergency repairs, the 319007487 limit pin is the trusted choice of professionals who demand quality, reliability, and performance from every component in their heavy equipment.
