Product Attributes

Brand: BOCH

Origin: CHINA

Applicable Industry: Machinery Repair Shops, Manufacturing Plant, Energy &Amp; Mining

Supply Ability & Additional Information

Transportation: Ocean

Place of Origin: CHINA

Payment Type: L/C,T/T

Incoterm: FOB,EXW

Packaging & Delivery

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MHC series air-cooled island gearboxes are used in environmental protection, chemical industry, energy and other fields

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Performance Characteristics

Port Crane Gearboxes are core transmission components specifically engineered for the high-intensity, high-frequency loading and unloading operations characteristic of port environments. Their performance features are meticulously tailored to meet the stringent demands of port working conditions. They must possess exceptional impact and overload resistance to withstand frequent starts, emergency braking, and the immense dynamic loads generated by sudden load sway. Simultaneously, gearboxes must operate reliably over extended periods in harsh environments characterized by salt spray, humidity, and high dust levels. Consequently, sealing performance and corrosion-resistant design are critical, typically achieved through specialized coatings and high-performance seals. To meet precise lifting demands, smooth transmission, low noise, and high precision are also vital, relying on high-precision gear machining and excellent housing rigidity. Furthermore, high transmission efficiency and effective heat dissipation ensure sustained, efficient operation, typically achieved through forced circulation lubrication and cooling systems.

Main technical parameters

Key technical parameters include: rated output torque and power, directly reflecting load-bearing capacity; transmission ratio (speed ratio), determining hoisting and travel speeds; an exceptionally high service factor (typically significantly exceeding general standards), providing design margin for impact loads; thermal power, ensuring controllable temperature rise during continuous cyclic operation; working class (e.g., FEM 1M, DIN 4.2), corresponding to the crane's high utilization rate; and specific mounting configurations, protection rating (IP65 or higher), and lubrication methods. These parameters collectively ensure seamless integration with hoisting, slewing, traveling, and other mechanisms.

Main application areas

They are primarily used in Power transmission systems for various port crane machinery. Core applications include the hoisting and trolley travel mechanisms of shore container cranes (quayside cranes), the hoisting and main travel mechanisms of tire-mounted or rail-mounted container gantry cranes (yard cranes), and the hoisting, luffing, and slewing mechanisms of portal cranes. Additionally, in grab unloaders, grab loaders, and large floating cranes used for bulk cargo handling, gearboxes serve as critical components driving the lifting, luffing, and slewing motions of grabs. These applications demand exceptionally high reliability and longevity under frequent start-stop cycles and heavy-load impact conditions.

Important Tips

Key emphasis is placed on preventive maintenance and standardized operation. Lubrication is paramount—regularly inspect and replace lubricants with the specified grade, ensuring oil cleanliness and proper oil levels. This is the most effective measure against premature wear. Overloading and impact operations are strictly prohibited, as any load exceeding design limits severely damages gears and bearings. Daily monitoring of operational status is essential, including abnormal vibration, noise, and bearing temperature—all precursors to failure. Regularly inspect all fastening bolts for tightness and seals for integrity to prevent escalating issues from loosening or leakage. All maintenance and repairs must be performed by qualified personnel strictly adhering to the manufacturer's manual. Establishing a condition-based predictive maintenance system is fundamental to achieving safe and economical operation throughout the equipment's entire lifecycle.

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