Excavator track chains

1. Travel Frequency vs. Static Work Dynamics The fundamental difference lies in how these machines move. Bulldozer track chains are designed for high-frequency travel. Constant movement creates immense traction and friction between the track bush and track pin. In this scenario, lubricated track chains are essential; their internal oil film significantly reduces heat buildup, preventing track link elongation and deformation. In contrast, an excavator spends roughly 90% of its operational time stationary. Because excavator track chains experience far less internal friction during a standard shift, the higher price tag of lubricated chains—despite their longer theoretical lifespan—offers a poor return on investment (ROI) for most digging applications. 2. The Impact of Hydraulic Breakers: High-Frequency Vibration Mid-to-large machines (over 20 tons) are frequently equipped with hydraulic breakers for rock crushing or road demolition. This creates intense, high-frequency vibrations that travel through the undercarriage. For lubricated track chains, these vibrations are a "silent killer," often causing the precision rubber seals to shift or fail, leading to critical oil leaks. Furthermore, master pin bolts are more prone to snapping under such vibration. Dry excavator track chains, featuring a simpler and more rugged construction, offer superior mechanical toughness and durability for these heavy-duty "breaking" tasks compared to delicate "oil chains." 3. Lateral Stress and Sealing Risks Excavators often operate on uneven terrain, generating massive lateral (side) thrust. Lubricated track chains rely entirely on their seals to retain oil. Lateral loads can cause slight pin deflection, squeezing the seals and allowing oil to escape. Once a seal fails, external grit and sand enter the link, mixing with residual oil to create an "abrasive paste." This accelerates wear much faster than standard metal-on-metal friction. Dry excavator track chains possess a "self-cleaning" property, making them far more reliable in the harsh, muddy, and watery environments typical of excavation sites. 4. Cost-Efficiency for Compact Excavators The cost of lubricated chains is typically 30% higher than dry chains. For compact excavators (under 10 tons), the lighter machine weight exerts minimal crushing stress on the pins. Consequently, the lifespan of dry excavator track chains is more than sufficient for the machine's duty cycle. Even though mini-excavators travel more frequently and rarely use breakers, lubricated chains remain an unnecessary expense for this category. Core Comparison Table: Dry Type vs. Lubricated Type Comparison Factor Dry Track Chains (Standard) Lubricated Track Chains (SALT) Best Fit Excavator track chains (All Sizes) Bulldozer track chains / Loaders Operational Logic High impact, heavy digging, breaking Continuous travel, long-distance pushing Vibration Resistance Excellent; simple and rugged structure Lower; seals prone to vibration damage Internal Wear Higher (Metal-on-metal friction) Extremely Low (Oil film protection) Total Cost Economical; lower replacement costs High; requires regular seal monitoring

In the widely used construction and engineering industries, the quality and reliability of undercarriage parts are crucial. Our factory offers a variety of specifications of undercarriage parts to meet the needs of different types of machinery. Small undercarriage parts are commonly used in various types of small construction machinery and special vehicles that require excellent off-road performance and stability. Here are some common small equipment and vehicles that may use small undercarriage parts: Mini Excavators: Used in tasks such as urban construction, field cultivation, and pipeline construction. They are typically equipped with undercarriage for better stability and maneuverability. Compact Loaders: Utilized for various material handling tasks, such as moving earth, gravel, and construction materials on construction sites. They also often use undercarriage. Mini Bulldozers: Employed for leveling and grading surfaces in road construction, parking lot development, and small earthmoving projects. Compact Agricultural Tractors: Some small agricultural tractors are equipped with undercarriage for better traction in fields without damaging the soil. Small Snowmobiles and Off-road Vehicles: In snowy, muddy, or rugged terrains, small undercarriage parts can enhance vehicle stability and traction. Gardening and Agricultural Machinery: Small undercarriage parts are also used in some gardening and agricultural machinery, such as plows, seeders, and harvesters, to work in different field conditions. Additionally, some small robots and robotic vehicles use undercarriage. Undercarriage is particularly useful for robots to move and perform tasks in complex terrains and harsh environments. Here are some examples of small robots using undercarriage: Drainage and Sewage Cleaning Robots: Equipped with undercarriage for traversing different terrains like deserts, forests, urban streets, sewers, etc. Search and Rescue Robots: In search and rescue missions, small robots can use undercarriage to navigate obstacles and perform tasks. Agricultural Robots: Some small agricultural robots are used for planting, weeding, and harvesting crops. They often use undercarriage for mobility. Exploration and Mining Robots: In exploration and mining, small robots can be used for surveying, underground mining, and mine clearing. Their undercarriage allows them to move and operate in mining environments. Educational and Research Robots: Some small robots designed for educational and research purposes use undercarriage to help researchers and students learn and experiment with robotics technology. The load-bearing capacity of the undercarriage is generally influenced by various factors, including undercarriage design, material quality, structural strength, etc. Here are some common undercarriage specifications and their general suitability for equipment load ranges: 72-Pitch Undercarriage Parts: Typically suitable for micro and mini excavators or compact crawler equipment with a designed load capacity of around 0.8 tons. Suitable for small construction projects, urban construction, and light excavation tasks. 90-Pitch Undercarriage Parts: Generally suitable for small crawler equipment with a designed load capacity ranging from 1 ton to 2 tons. Suitable for medium-sized construction projects, earthmoving projects, and general excavation tasks. 101-Pitch Undercarriage Parts: Can be suitable for medium to medium-large excavators with a designed load capacity ranging from 3 tons to 6 tons. 135-Pitch Undercarriage Parts: Typically suitable for medium-large excavators with a designed load capacity ranging from 8 tons to 12 tons. 154-Pitch Undercarriage Parts: Suitable for large excavators with a designed load capacity of 10-12 tons or more. It's important to note that the above load capacity ranges are for reference only. The specific application will depend on the excavator model, manufacturer requirements, and the specific needs of the project. When selecting undercarriage parts, it is recommended to consult in detail with the excavator manufacturer or supplier to ensure the selection of the most suitable parts for your equipment.