Brand: BOCH
Applicable Industry: Energy &Amp; Mining, Manufacturing Plant, Machinery Repair Shops
Performance Characteristics:
Mining Equipment Gearboxes must withstand the demanding conditions of high dust levels, severe impacts, and continuous heavy-duty operation in mining environments. Their performance characteristics emphasise exceptional reliability and weather resistance. Featuring high-strength alloy gears and casing structures, they undergo precision heat treatment processes such as carburising and quenching to enhance surface hardness and fatigue strength, enabling sustained operation under prolonged overload conditions. Equipped with a multi-seal system combining labyrinth seals and skeleton oil seals, it effectively blocks dust and slurry ingress while preventing lubricant leakage. Simultaneously, it delivers superior heat dissipation. Optimised housing cooling structures or integrated forced cooling systems prevent excessive oil temperatures during prolonged operation, ensuring stable transmission across a broad temperature range of -30°C to 60°C. High gear meshing precision and low operational noise reduce the impact of equipment vibration on transmission efficiency, meeting the endurance requirements for continuous mining operations.
Main technical parameters:
Key technical parameters require precise matching to specific mining equipment types. The gear ratio range typically spans 3.5 to 120, achievable through multi-stage gear combinations to deliver varied output speeds, accommodating the power requirements of diverse equipment such as coal cutters, roadheaders, and crushers. Rated power spans 50-2000kW, with rated torque reaching 1000-50000N·m, accommodating Power transmission from small-to-medium conveying equipment to large-scale mining machinery. Gear precision grades predominantly comply with GB/T 10095.1 Class 6-7, ensuring stable transmission efficiency above 96%-98%. Centre distance dimensions are tailored to equipment installation space, commonly ranging from 150-800mm. Specifications must also clarify lubricant type (e.g., industrial gear oil CKC 220/320), tank capacity (10-200L), and protection rating (IP65-IP67). Premium models additionally specify parameters such as no-load power loss and maximum permissible axial/radial forces, providing precise guidance for equipment selection and installation.
Main application areas:
Primary applications span critical equipment across the entire mining process. In underground mines, they power the cutting and traction units of coal cutters, providing stable drive for cutting teeth coal extraction and machine movement. They also serve the cutting and loading mechanisms of roadheaders, ensuring synchronised efficiency in tunnel excavation and material conveyance. In open-pit mines, they support the slewing and travelling mechanisms of large mining excavators, enabling bucket excavation and machine mobility. They also enhance power output during heavy-load incline ascents in mining dump truck transmissions. Furthermore, within mineral processing, they provide reduction drives for equipment such as jaw crushers, cone crushers, and ball mills, regulating crushing and grinding speeds to ensure uniform ore particle size. They are also suitable for the drive systems of mining belt Conveyors and scraper conveyors, enabling the stable, continuous long-distance transport of materials like ore and waste rock. These gearboxes adapt to diverse mining scenarios across coal mines, metal mines (iron ore, copper ore), and non-metallic mines (limestone quarries).
Important Tips:
When utilising mining equipment gearboxes, multiple operational and maintenance considerations must be observed. Prior to installation, verify that the gearbox model matches the equipment's power parameters. Ensure precise alignment between input/output shafts and couplings, with deviations controlled within 0.1mm to prevent accelerated gear wear caused by misalignment. During operation, regularly inspect lubricant levels and quality. Replace the oil after the initial 500 hours of operation, followed by subsequent changes every 2000-3000 hours to prevent lubrication efficacy from being compromised by contamination or degradation. Monitor gearbox operating temperatures routinely. Should oil temperatures exceed 80°C, or if abnormal noise or oil leakage occurs, immediately cease operation for investigation to prevent escalating failures such as gear adhesion or bearing damage. Prior to extended shutdowns, drain all lubricant and thoroughly clean the interior of the housing. Before restarting, refill with fresh oil and conduct a 30-minute no-load test run. Furthermore, maintenance and repairs must be performed by qualified personnel to prevent damage to seals or deviations in gear precision caused by unqualified operations, thereby extending the gearbox's service life.
Henan Bocheng International trade Co.，LTD
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