10 Ton Electric Crane Hoists Double Chain Crane Trolley Hoist For Overhead

Double Chain Electric Crane Hoist Trolley Medium Duty Overhead Bridge Crane Lifting System

The Double Chain Electric Crane Hoist represents the mid-range workhorse of our electric crane hoist family, engineered specifically for medium-duty overhead bridge crane systems where daily production throughput, operator safety, and long-term reliability are critical requirements. With a dual G80 alloy steel load chain configuration providing balanced load distribution and a robust M5 work level rating, this electric crane hoist is purpose-built for continuous multi-shift operation in manufacturing plants, fabrication facilities, and logistics centers where the crane system is an essential production tool rather than an occasional convenience. The dual chain design doubles the load-bearing contact area with the lifting sprocket, significantly reducing chain wear rates and extending service intervals compared to single-chain configurations operating at the upper limits of their capacity range.

The integrated electric trolley drive system delivers smooth, controlled horizontal travel along the crane bridge girder, with a dual-speed option that provides 20 m/min rapid traverse for efficient material transport between work zones and 5 m/min precision speed for accurate load positioning at pickup and drop-off points. The dual chain reeving arrangement naturally self-centers the load under the hoist, minimizing side-pull forces and reducing wheel flange wear on the trolley and bridge end trucks, a detail that substantially extends the service life of the entire crane system. Each hoist is factory-configured with independent upper and lower limit switches, thermal motor protection on both hoist and travel motors, and a comprehensive emergency stop system that provides multi-layer protection for both the operator and the suspended load. The ergonomic pendant controller features clearly labeled, large-diameter pushbuttons that can be operated comfortably even when wearing heavy work gloves, a practical detail appreciated by operators working in unconditioned industrial environments.

• Dual Chain Load Distribution: Two independent G80 alloy steel load chains share the lifting load equally through a precision-machined dual-pocket sprocket, reducing individual chain stress by 50% and extending chain service life significantly compared to single-chain configurations.
• M5 Work Level Duty Rating: Certified for medium-duty cyclic operation with up to 800 starts per hour at 40% ED, making this crane hoist suitable for continuous production line service across multi-shift manufacturing schedules without performance degradation.
• Dual-Speed Trolley Travel: Electric trolley drive with 20 m/min rapid traverse and 11 m/min precision positioning speed enables efficient long-distance material transfer while maintaining the fine control needed for accurate load placement.
• Self-Centering Load Geometry: The dual chain reeving arrangement maintains the hook directly under the hoist centerline, eliminating side-pull forces that accelerate trolley wheel and bridge rail wear in single-chain configurations.
• Comprehensive Limit Protection: Independently adjustable mechanical upper and lower hook limit switches prevent overwinding and unwinding, while the geared limit switch assembly provides a secondary electrical limit for redundant over-travel protection.
• IP55 Protected Electrical Enclosure: Fully gasketed control panel enclosure with IP55 rating protects contactors, relays, and terminal connections against dust and moisture ingress, ensuring reliable operation in foundries, mills, and outdoor sheltered installations.
• Thermal Protection on All Motors: Embedded thermistor sensors in both the hoist motor and trolley travel motor windings provide continuous temperature monitoring with automatic power reduction at warning threshold and controlled shutdown at critical temperature.

This M5-rated double chain electric crane hoist is the preferred choice for medium-duty production environments across diverse industrial sectors. Automotive component manufacturers integrate these crane hoists into overhead bridge crane systems for raw material handling, die and mold loading into stamping presses, and finished part offloading from machining centers across continuous three-shift operations. Steel fabrication shops and structural steel manufacturers deploy them for plate handling, beam manipulation, and welded assembly positioning where loads regularly fall within the 3 to 10 ton range and duty cycles demand consistent M5-rated performance. Concrete precast plants utilize these hoists on bridge cranes for form handling, rebar cage positioning, and finished panel demolding and stacking operations in dusty, abrasive environments where IP55 protection is essential. Agricultural equipment assembly lines rely on the dual-speed trolley travel for moving large fabricated frames and subassemblies between welding, painting, and final assembly stations with the precision needed for component alignment. Pump and compressor manufacturers use the dual chain configuration for handling large castings and assembled units through machining, testing, painting, and packaging stations within a single manufacturing facility.

Each double chain electric crane hoist is packed in a heavy-duty export-grade plywood crate with custom-molded high-density foam cradles that independently secure the hoist body, pendant controller, chain container, and trolley frame for maximum protection during ocean and road freight transportation. Factory acceptance testing includes full M5-level cyclic load testing at 800 starts per hour for a minimum of 6 continuous hours, overload clutch calibration verification at 110%, 125%, and 150% thresholds, electromagnetic brake response time measurement, and comprehensive electrical safety testing per IEC 60204 standards. Documentation includes detailed installation and commissioning manuals, crane bridge integration guidelines with load calculation tables, wiring schematics, spare parts catalog with exploded assembly drawings, periodic inspection logbook templates, and CE/ISO 9001 certification certificates. A 24-month standard warranty covers the hoist motor, travel motor, gearbox, chain sprocket assembly, and all electrical control components, with extended warranty options and on-site commissioning services available through our global service network.