Crane Sprocket
30 Years of Experience – Engineering Safety & Reliability into Every Crawler Crane Undercarriage Parts.
What is a Crane Sprocket ?
The Crane Sprocket is the core crawler crane undercarriage part that drives the crawler track to travel. It transfers power from the motor and reducer to the tracks through gear-to-track meshing, thereby driving the crane forward.
Core Functions:
- Transmit power to drive the entire crawler crane forward
- Drive the track to rotate
- Auxiliary tensioning and guiding
- Bearing and cushioning the weight of the entire crawler crane.
- Reduce track bounce and abnormal noise, ensuring stable operation under heavy loads
Why Choose Our Sprocket ?
Premium Quality
As a supplier of crawler crane undercarriage parts with rich experience, we always prioritize product quality. Our crane sprockets are made from high-quality raw materials sourced from Laigang. They undergo overall tempering and surface quenching treatments. Each crane sprocket undergoes rigorous quality inspection before leaving the factory to ensure that the product meets OEM standards and performs well under various construction conditions.
Rich export experience
With 27 years of rich experience, our crawler crane parts are exported to over 30 countries and regions. We have helped numerous customers solve their crawler crane parts problems around the world. We have the most professional sales team and transportation team, and can provide you with the best transportation options.
After-sale service
With an extended warranty period of 2500 working hours and 24/7 online response service, we are committed to establishing long-term and stable partnerships with our customers. Therefore, we strive to provide our customers with the best after-sales service, ensuring worry-free after-sales support.
Comprehensive brand supply
Our crawler crane undercarriage parts are compatible with 97% of global crawler crane brands, ranging from 30 tons to 1,350 tons. Including Liebherr, IHI , HITACHI , SUMITOMO, Manitowoc , KOBELCO, Link-Belt, Ruston Bucyrus, TEREX AMERICAN , TEREX DEMAG , NIPPON SHARYO , AMERICAN, FUWA , LIMA , SANY , XCMG , ZOOMLION .
Selection of High-quality Raw Materials
Using high-quality 35SiMn alloy material, which boasts high strength and excellent toughness. After tempering, it can withstand both load-bearing and impact resistance. With the addition of elements such as silicon and manganese, its wear resistance is significantly higher than that of ordinary carbon steel.
Pure Copper Alloy Bushing with excellent wear resistance, self-lubricating, impact resistance, corrosion resistance, and effectively reduces friction loss. Prolongs the service life of sprockets and reduces maintenance costs in the later stage.
Using high-quality floating oil seals and sealing rings with good sealing performance can effectively prevent butter leakage.
Excellent Processing Technology
1. Make Mold & Sand Mold
Experienced engineers design completely according to the original factory drawings. Ensure that the crane sprockets are fully compatible with other accessories of the original crawler crane.
2. Casting
High-quality alloy steel is poured into production molds after being melted at high temperatures. Strictly control the temperature and speed during the casting process. Reduce the occurrence of pores, cracks, and deformations.
3. Polishing riser milling
Ensure the precise size of Crane Sprockets, improve appearance quality, and enhance assembly performance.
4. Quenching & Tempering
Heat the sprockets to a high temperature of 840℃-880℃ and maintain it to ensure uniform material quality. Then, rapidly cool them down to obtain high-hardness martensite.
Reheat the sprockets to 500℃-650℃ and maintain the temperature. Allow it to cool slowly to stabilize the microstructure, transforming it into tempered sorbite.
This process significantly enhances the physical properties (hardness, toughness, strength, etc.) of the crane sprockets. It reduces the internal stress of the workpiece, making it less prone to fracture or deformation during subsequent use and processing.
5. Mechanical property testing
Conduct a series of mechanical property tests on the quenched and tempered workpieces.
- Pendulum impact testing machine to assess the impact resistance of components.
- An electronic universal material testing machine conducts tensile testing to assess the toughness of the components.
- A metallographic microscope is used to observe whether the tempering quality meets the standard.
- Ultrasonic Testing (UT) & Magnetic particle inspection (MT) are used to inspect whether there are pores, shrinkage cavities, or cracks inside.
6. Surface hardening
Rapidly heat the surface of the workpiece and then immediately cool it down. This process allows the surface of the workpiece to obtain a layer of high-hardness martensite. This process can not only improve the hardness and wear resistance of the workpiece surface, but also maintain good toughness inside the workpiece. It can greatly extend the service life of the Sprockets.
7. Hardness test
After surface quenching, a hardness test is required to ensure that the hardness of the workpiece surface meets the OEM standard.
8. Painting
Automated painting workshop, environmentally friendly and worker-friendly. In addition to the original black configuration, customers can also customize the color. Painting can also have a good anti-corrosion effect, extending the service life of the crane sprockets.
Technical Support
How to replace the crane sprocket ?
Preliminary Preparations
Park the crawler crane on flat, solid ground and extend the legs to stabilize the machine body. Cut off the power, turn off the engine, and hang up the warning sign.
1. Release the tension of the track shoe
Locate the tension cylinder, and loosen the oil filler nozzle or oil drain valve.
2. Dismantle the track chain
Use a tool to disassemble the track joint (live pin/locking pin), pull the track outward, and expose the drive wheel.
3. Remove the old crane sprocket
Remove the crane sprocket mounting bolts/end cap, gently push out the drive wheel assembly with a lifting jack , and inspect the travel motor drive shaft and wheel hub for wear.
4. Install a new crane sprocket
Clean the hub interface and the output shaft spline. Align the new sprocket with the spline for installation.
5. Reset track
Hang the track back onto the drive wheel ring, connect the track pin, and tighten the track pin. Inject butter into the tensioning cylinder and re-tighten the track.
6. Debugging and Inspection
Check if the engagement is smooth. Walking at low speed without a load, observe for any abnormal noise, deviation, derailment, or jumping of the tracks.
Check if the bolts are loose and if there is any oil leakage .