What Is the 3 Ton Spider Crane

The 3 Ton Spider Crane (Model RM3.0) is a diesel-powered mini crawler crane rated for 3-ton lifting capacity, built with retractable spider outriggers that fold to pass through standard doorways and expand for stable lifting on uneven ground. It is designed for indoor renovation, glazing, HVAC installation, and other confined-access jobs that a standard mobile or crawler crane cannot reach.

Technical Specifications

The 3 Ton Spider Crane delivers a 10 m (4-rope) lift height, a 9.3 m maximum working radius at 0.4 ton, 360° slewing (45 sec full rotation), and a 2700 kg machine weight, powered by a Changchai CZ380 16 kW or Yanmar 3TNV88 18.2 kW diesel engine, or a battery pack.

Key Features and Design

Standout features include manual-rotation outriggers with automatic support leveling, a 360° rotary turntable (0–360°, 45 sec) with wireless remote control (100 m range), a three-phase AC asynchronous motor (YYB112M-4), and a Q355D high-strength steel frame for a favorable strength-to-weight ratio.

• Manual-rotation outriggers with automatic support for setup on uneven ground
• 360° rotary turntable (0–360°, 45 sec) with wireless remote control (100 m range)
• Three-phase AC asynchronous motor (YYB112M-4, AC380V) for the slewing and hoist drive
• Dual diesel engine options — Changchai CZ380 or Yanmar 3TNV88 — plus a battery-powered mode
• Q355D high-strength steel frame construction

Safety Systems

The crane includes seven built-in safety devices — a torque limiter, anti-rollover device, interlock, hook overwinding device, overload alarm limiter, tri-color alarm light, and emergency stop button — intended to guard against overload, uncontrolled descent, and operator error on confined job sites.

• Torque limiter
• Anti-rollover device
• Interlock
• Hook overwinding device
• Overload alarm limiter
• Tri-color alarm light
• Emergency stop button

Spider Crane vs. Mini Crawler Crane: What's the Difference

A spider crane uses independently folding outrigger legs that let it pass through standard doorways and stabilize on stairs or uneven floors, while a mini crawler crane relies on fixed tracks for mobility and does not fold down for narrow access. Spider cranes trade travel speed for reach into confined spaces; mini crawler cranes trade that access for faster repositioning across open sites.

Applications: Where the 3 Ton Spider Crane Is Used

Typical uses include indoor lifting for renovation and interior fit-out, glass and curtain-wall installation, HVAC and mechanical equipment placement, and warehouse or factory maintenance — any job where headroom, doorway width, or floor loading rules out a wheeled crane or a larger crawler crane.

• Interior renovation and fit-out lifting
• Glass and curtain-wall panel installation
• HVAC unit and mechanical equipment placement
• Warehouse, workshop, and factory maintenance work
• Landscaping and courtyard jobs with restricted vehicle access

Price, Lead Time, and Customization

Final price depends on the diesel engine option, control system (manual or remote), outrigger customization, and order quantity, so there is no single fixed list price. Lead time depends on current production load and how much customization is requested — confirm both with sales before ordering.

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