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+86 13802929623
+86 13802929623
Guangzhou Zhonghai Jiuchuan Machinery Equipment Co., Ltd. supplies heavy equipment undercarriage parts for excavators, bulldozers and other crawler construction machinery.
Our product range includes steel track chains, bottom rollers, top rollers, sprockets, front and rear idlers, steel track pads and track adjusters. Each component is selected and manufactured according to the machine model, installation dimensions, load conditions and operating environment.
Whether you need an individual replacement component, a mixed parts order or a complete undercarriage package, our technical and export teams help confirm compatibility before production and shipment.
The undercarriage carries the machine load, transfers driving force and maintains stable movement over uneven terrain. Components must therefore work together with the correct dimensions, alignment, hardness distribution and wear characteristics.
Zhonghai Jiuchuan supplies the principal crawler undercarriage components required by equipment parts distributors, repair workshops, fleet operators, rental companies and construction contractors.
Steel track chains form the load-bearing and driving foundation of a crawler undercarriage. They operate continuously under tension, impact, abrasive wear and repeated articulation.
Our steel track chains are developed for accurate engagement with sprockets, rollers and idlers. Link geometry, chain pitch, pin and bushing dimensions are controlled to support smooth movement and reduce abnormal wear between connected components.
Bottom rollers, also known as track rollers or lower rollers, carry most of the machine’s operating weight. They must withstand radial loads, side forces, shock and continuous contact with the track chain.
Zhonghai Jiuchuan bottom rollers are manufactured with controlled machining tolerances and application-specific heat-treatment processes. Roller profiles, flange geometry, mounting holes and sealing structures are matched to the corresponding machine application.
Top rollers are also referred to as carrier rollers or upper rollers. They support the return section of the track chain and prevent excessive chain sag during machine movement.
The roller diameter, flange position, mounting bracket and installation height must match the original undercarriage structure. Incorrect top roller dimensions can cause chain vibration, misalignment and accelerated contact wear.
Our team checks the machine model, part number and key installation dimensions before confirming the recommended top roller.
Sprockets transfer torque from the final drive to the track chain. Accurate tooth shape and pitch engagement are essential for smooth power transmission and balanced wear.
Zhonghai Jiuchuan supplies machine-specific sprockets according to the original tooth number, bolt-hole pattern, pitch diameter and track chain configuration.
Idlers guide the track chain, maintain alignment and work with the track adjuster to control track tension. They are exposed to repeated impact, side loads and abrasive contamination.
Our front and rear idlers are selected according to the machine structure, guide width, shaft dimensions, mounting style and track chain profile.
Steel track pads—also called track shoes or crawler pads—create the contact surface between the machine and the ground. Their width, grouser pattern and plate structure directly affect traction, ground pressure, turning resistance and machine stability.
Track adjusters maintain the correct track-chain tension and help absorb impact transmitted through the idler. A properly functioning adjuster reduces the risk of derailment, excessive chain sag and damaging impact loads.
Our track adjuster category covers machine-specific tensioning and recoil assemblies. Depending on the application, a track adjuster may include a recoil spring, cylinder, rod, seals, mounting components and associated hardware.
Heavy equipment undercarriages face different wear patterns depending on the terrain, machine operation and maintenance practices. We help customers select construction machinery undercarriage parts according to the actual jobsite rather than relying only on a part name.
Rock, sharp aggregate and continuous heavy loads increase impact and abrasive wear. Product selection should prioritize structural strength, wear resistance and reliable fit between the chain, rollers, sprocket and idler.
Excavators and bulldozers may operate on mixed soil, gravel and compacted surfaces. Balanced wear performance and dependable everyday operation are the main requirements.
Mud packing can interfere with sprocket engagement and roller movement. Correct shoe width, track tension and regular cleaning are important for reducing undercarriage resistance.
Fine abrasive particles may enter component contact areas and accelerate wear. Inspection frequency and correct track tension are especially important in these environments.
Tracked pavers and related construction equipment require stable movement, dimensional consistency and proper alignment to support smooth operation.
Frequent turning, debris and repeated shock loads place additional stress on rollers, track pads, idlers and chains. Components should be selected according to both machine weight and jobsite impact conditions.
Our production and supply system combines manufacturing resources, warehousing, technical selection and export services.
Our production base is equipped with automatic casting lines, CNC machining centers and intelligent inspection equipment. This supports stable production of high-volume and model-specific undercarriage components.
An annual production capacity of approximately 1.2 million pieces supports repeat orders, distributor replenishment and project-based purchasing.
We focus on construction machinery components and understand the practical requirements of overseas aftermarket distributors, repair workshops and equipment operators.
Our team helps verify machine models, part numbers, photos and dimensions before production, reducing the risk of ordering incompatible components.
Our technical center follows developments in international construction machinery and continues to improve wear resistance, load performance and adaptability to demanding operating conditions.
Automatic casting, CNC machining and inspection systems support dimensional consistency and repeatable batch production.
Customers can purchase chains, rollers, sprockets, idlers, track pads and adjusters through one supplier instead of coordinating with multiple factories.
Batch inspection information and retained samples support after-sales analysis and long-term purchasing cooperation.
Our team provides service in 12 languages and supports overseas customers with product selection, export documents, customs-clearance coordination and after-sales communication.
Our location, warehouse and integrated supply chain allow us to respond efficiently to distributor inventory requirements and international project orders.
Our heavy equipment undercarriage parts are supplied to:
Construction machinery parts importers
Regional parts distributors
Excavator and bulldozer repair workshops
Heavy equipment dealers
Mining and quarrying companies
Construction contractors
Equipment rental companies
Fleet maintenance departments
Aftermarket brands
Overseas engineering projects
We support both repeat distributor purchasing and model-specific replacement requirements.
Since 2009, Guangzhou Zhonghai Jiuchuan Machinery Equipment Co., Ltd. has combined product development, manufacturing, warehousing, sales and export services to support the global construction machinery aftermarket.
Our goal is not simply to supply an individual component. We help customers confirm the correct application, consolidate multiple product categories, control batch quality and arrange efficient international delivery.
Send us your machine models, part numbers or purchasing list to receive a matched heavy equipment undercarriage parts quotation.
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