The XCMG crawler crane spare parts system is built around the dual core functions of “lifting operation + crawler travel.” It covers key systems such as structure, transmission, hydraulics, electrical, and travel. Based on their functional positioning, it can be divided into five categories, each designed specifically for the heavy-duty operation characteristics of crawler cranes.

1. Lifting Structure Spare Parts

These spare parts are the “core skeleton” of crawler cranes that carry heavy loads, directly determining the lifting safety and operational stability of the equipment. They primarily include:

Boom-related spare parts: such as main boom sections, auxiliary boom sections, luffing cylinders, and boom pins. XCMG’s original crane boom spare parts are made of Q690 high-strength alloy steel, fully welded and shot-blasted for rust removal. Their bending strength is over 40% higher than that of ordinary steel. The main boom section utilizes a “box-section + reinforced rib” structure, effectively distributing the lifting load and preventing boom bending or breakage. The luffing cylinders are double-acting, with honed inner walls and imported seals. Internal leakage is controlled to less than 0.3 mL/min, ensuring smooth boom raising and lowering.

Hook and pulley assembly spare parts include main hooks, auxiliary hooks, pulley blocks, and wire rope drums. The original main hook is made of one-piece 42CrMo forged steel. The hook head undergoes medium-frequency quenching, achieving a surface hardness of HRC50-55. It can withstand a static load test of three times the rated load without permanent deformation. The pulley assembly is made of high-strength cast iron, and the pulley groove is chrome-plated, resulting in a friction coefficient as low as 0.15, reducing wire rope wear and extending its service life.

Counterweight and bracket spare parts: such as counterweight blocks, counterweight brackets, and connecting pins. XCMG offers modular counterweight spare parts for different lifting tonnages, with individual weights ranging from 5 to 20 tons, allowing for flexible combinations based on operational needs. The counterweight bracket is welded from thickened steel plates, and the joints are equipped with locating pins to ensure a secure installation and prevent shaking during operation.

2. Crawler Track System Spare Parts

The crawler track system is key to enabling crawler cranes to operate on mobile surfaces. Spare parts must be suitable for complex surfaces such as muddy and rugged terrain. Core components include:

Crawler track assembly spare parts: track shoes, track links, drive wheels, guide wheels, etc. XCMG original track shoes are available in “standard” and “reinforced” types. Standard track shoes are made of high-manganese steel and are suitable for ordinary construction sites. Reinforced track shoes feature welded wear-resistant alloy strips, increasing wear resistance by 60%, making them suitable for harsh working conditions such as mining and infrastructure construction. The track links are made of 20MnCr5 alloy steel, carburized and quenched. The clearance between the track pin and sleeve is controlled within 0.1mm, ensuring smooth and smooth travel.

Travel drive spare parts: including travel motors, travel reducers, brakes, etc. The original travel motor utilizes an axial piston design, delivering 15% higher output torque than similar products in the industry. This allows for low-speed, high-torque travel, making it suitable for heavy-load movement. The travel reducer utilizes a planetary gear transmission structure, achieving a transmission efficiency exceeding 96%. It is equipped with a wet brake, providing high braking torque and effectively preventing the equipment from slipping when operating on slopes.

Roller and carrier sprocket spare parts: The rollers utilize double-row tapered roller bearings and cast steel housings, offering excellent sealing performance and ensuring long-term operation in muddy and watery environments without the ingress of impurities. The carrier sprocket surface is ground to a radial runout of less than 0.05mm, effectively supporting the crawler tracks and reducing vibration during travel.

3. Hydraulic System Spare Parts

The hydraulic system is the core of the crawler crane’s power transmission, providing stable power for lifting, traveling, and other movements. Spare parts include:

Hydraulic pump and motor spare parts: These include the main hydraulic pump, slew motor, travel motor (mentioned above, but focusing on lifting-related motors here), hydraulic cylinders, etc. XCMG’s original main hydraulic pumps utilize German Linde technology, with displacements ranging from 100mL/r to 300mL/r, suitable for crawler cranes of varying tonnages. The pumps boast a volumetric efficiency exceeding 95% and can operate under high pressure (35MPa) for extended periods. The swing motor utilizes a cycloidal pinwheel design, offering smooth rotation, high starting torque, and 360° continuous rotation.

Hydraulic valve and piping spare parts include multi-way valves, relief valves, counterbalance valves, and high-pressure hoses. The original multi-way valves feature an integrated design, reducing piping connections and leak risk. The counterbalance valves have built-in check locks and throttle valves to prevent the boom and outriggers from falling under load, ensuring operational safety. The high-pressure hoses utilize a six-layer steel wire wound structure with a pressure rating of 45MPa, suitable for temperatures ranging from -40°C to 120°C, and boast a service life more than twice that of standard hoses.

Hydraulic Oil and Filter Spare Parts: XCMG’s dedicated hydraulic oil uses anti-wear hydraulic oil (L-HM46), which has excellent shear and oxidation resistance and can maintain stable oil viscosity under high-temperature and high-pressure environments. The hydraulic oil filter uses glass fiber filter material with a filtration accuracy of 3μm, effectively filtering impurities from the hydraulic oil and protecting precision components such as the hydraulic pump and valves.

4. Electrical System Spare Parts

The electrical system is the core of the crawler crane’s “intelligent control and safety protection.” Spare parts must possess high stability and anti-interference capabilities. They mainly include:

Control Unit Spare Parts: Such as PLC controllers, touch screens, operating handles, and remote controls. XCMG’s original PLC controllers use Siemens S7 series industrial-grade chips, offering fast computing speeds and strong anti-interference capabilities. They can simultaneously control multiple movements, including lifting, traveling, and slewing. The wireless remote control utilizes 2.4G high-frequency communication technology, with a control range of up to 100 meters and strong signal penetration, making it suitable for the complex environments of large construction sites. It also features an emergency stop function to ensure safe remote operation.

Sensors and safety protection spare parts: including torque limiter sensors, angle sensors, weight sensors, and anemometers. The torque limiter sensor uses a strain gauge design with a measurement accuracy of ±0.5%. It monitors boom length, angle, and load weight in real time. When the rated torque is approached, it automatically cuts off dangerous movements and issues an alarm. The anemometer uses ultrasonic measurement technology to display the wind speed in the operating environment in real time. When the wind speed exceeds 12m/s (force 6 wind), lifting operations are prohibited to ensure equipment safety.

Electrical components and wiring harness spare parts: such as contactors, relays, fuses, and wiring harness connectors. Genuine contactors use silver alloy contacts with low contact resistance and a service life of over 100,000 cycles. The wiring harness connector is IP67 waterproof, effectively protecting against rain and dust intrusion and short circuits. The fuse is a fast-blow type that quickly cuts off current in the event of a circuit overload, protecting electrical equipment.

5. Spare Parts for Consumable Parts

Although these parts are relatively inexpensive, they require frequent replacement, directly impacting equipment efficiency. These parts primarily include:

Wire rope and brake shoe spare parts: XCMG’s original wire rope is made from galvanized steel wire, with 37 strands per strand. Its breaking strength is 30% higher than that of ordinary wire rope, and its surface is coated with wear-resistant and rust-proof oil, effectively resisting corrosion during outdoor operations. Brake shoes utilize a semi-metallic friction material with a stable friction coefficient of 0.45-0.55. They offer a service life of over 8,000 braking cycles, meeting the heavy-duty braking requirements of crawler cranes.

Seals and Grease Spare Parts: These include O-rings, oil seals, and bearing seals, all made of fluororubber or nitrile rubber. They offer excellent oil and temperature resistance and are suitable for the sealing needs of hydraulic and transmission systems. XCMG’s special greases include extreme-pressure lithium-based grease (suitable for general-use parts) and molybdenum disulfide grease (suitable for heavy-duty parts such as track chains and slewing bearings). They form a stable oil film under high-temperature and heavy-load conditions, reducing component wear.

Tire and Buffer Spare Parts: Some crawler cranes are equipped with auxiliary tires (for short-distance transport). These factory tires feature a radial construction, a deep tread pattern, and a strong load-bearing capacity, making them suitable for complex construction site surfaces. Buffers, including shock absorbers and cushions, are made of polyurethane, offering excellent elasticity and absorbing vibrations during operation, protecting the equipment’s structure and electrical components.

If you need spare parts for XCMG crawler cranes, please contact us directly. We will provide you with high-quality and affordable accessories!

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