Mobile Spider Crane

Mobile spider crane is a compact lifting machine equipped with extendable outriggers that resemble spider legs. These outriggers provide exceptional stability on uneven or restricted surfaces. This type of crane is designed to access narrow spaces such as doorways, corridors, rooftops, and confined industrial zones. Despite its small footprint, a mini spider crane can lift impressive loads with high accuracy. It can meet the demands of tight spaces, complex lifting tasks, and diverse working conditions. Known for its compact body, extendable outriggers, and impressive lifting capacity relative to its size, the small spider crane is widely used in construction, glass installation, and equipment maintenance, among other applications. Besides, their mobility makes them especially valuable in indoor projects, urban construction, and renovation work where space is limited.

Mobile Spider Crane Parameters

Model	YG-3T	YG-5T	YG-8T
Maximum operating radius	8.83m×0.2t	14m×0.5t	16.5m*0.5t
Maximum ground lift	9.2m	16.8m	18m
Hook rising speed	0-8m/min (4 ropes）	12m/min (4 ropes）	12m/min (4 ropes）
Wire rope specifications	φ8mm×45m	φ11mm×80m	φ11mm×80m
Telescopic arm form	5-section boom, U-shaped structure	5-section boom, U-shaped structure	5-section boom, U-shaped structure
Telescopic arm length/time	3.1m-9.2m/20sec	4.7m-16.5m/54sec	4.7m-16.5m/54sec
Boom angle/time	0-78°/13sec	0-78°/13sec	0-78°/13sec
Rotation angle/speed	0-360°（continuous）/60sec	0-360°（continuous）/38sec	0-360°（continuous）/38sec
Overall size	2.98*0.8*1.5m	5*1.5*1.9m	5*1.6*2.18m
Deadweight	2700kg	6200kg	7200kg

Features of Crawler Spider Crane

• One of the defining characteristics of a mobile spider crane is its compact design. The body is narrow and low, allowing it to enter restricted areas. Once in position, the crane deploys its outriggers to create a stable base for lifting operations.
• Another key feature is telescopic boom technology. The boom can extend and retract smoothly, providing flexibility in reach and height. Many models also feature advanced control systems, including remote control operation, which enhances safety and precision.
• Mini spider cranes are typically equipped with rubber tracks instead of wheels. These tracks distribute weight evenly, reduce ground pressure, and allow the crane to travel over delicate surfaces such as marble floors or finished interiors.

Mini Spider Crane Structural Composition

Understanding the structure of a mobile spider crane helps explain its performance and reliability. The main components include the crane body, boom system, outriggers, hydraulic system, control unit, and power source.

• The crane body houses the engine or electric motor, hydraulic pumps, and control electronics. It is designed to be compact while protecting critical components from dust, moisture, and impact.
• The boom system is typically telescopic and made from high strength steel. It provides the lifting reach and height, and is engineered to maintain stability even at maximum extension.
• Outriggers are one of the most distinctive structural elements. They extend outward and downward, adjusting to uneven terrain and distributing load evenly across the ground.
• The hydraulic system powers the boom, winch, and outriggers. Precision valves and sensors ensure smooth and controlled movement during lifting operations.

Wide Applications for Small Spider Crane

1. Glass Installation and Curtain Walling
   Perhaps the most common use for the mobile spider crane is in the glazing industry. Using vacuum lifter attachments, spider cranes can precisely position large glass panes on the facades of skyscrapers. Their ability to work from inside a building and reach out over the edge is a game-changer for high-rise construction.
2. Indoor Plant Maintenance and Machinery Moving
   In factories and power plants, space is at a premium. Spider cranes can navigate between production lines to lift motors, gearboxes, or CNC machines for repair.
3. Restoration of Historical Buildings
   When working on ancient cathedrals or heritage sites, heavy machinery is often forbidden due to the risk of structural vibration or ground damage. The lightweight and gentle footprint of a spider crane allow for delicate restoration work without endangering the site.
4. Rooftop Operations
   Due to their low weight, spider cranes can be lifted by a larger crane onto the roof of a building. Once there, they can be used for steel erection. HVAC installation, or landscaping, effectively acting as a permanent lifting solution for the duration of the project.

How Does It Work? – The Principles of Operation

• Hydraulic Power Distribution
  The heart of the crane is a hydraulic pump that translates engine power into fluid pressure. This pressure is directed through a series of valves to control the tracks, the outriggers, the boom extension, and the winch. High-pressure hoses are often routed internally within the boom to protect them from damage.
• Stability and Load Moment Limiter
  Safety is the most critical aspect of the spider crane’s working principle. An onboard computer, known as the Load Moment Limiter, constantly monitors the boom angle, length, and the pressure on each outrigger.

Advantages of Using Mobile Spider Cranes

For businesses and contractors, the decision to invest in or rent a crawler spider crane offers several strategic benefits.

1. Cost Efficiency
   By eliminating the need for large-scale scaffolding that require road closures and permits, spider cranes significantly reduce project overheads. They require fewer personnel to operate and can be transported on a standard trailer or small truck.
2. Enhanced Safety
   Spider cranes automate the heavy lifting in restricted areas, keeping workers out of the “danger zone.” The remote control functionality allows operators to stand at a safe distance with the best possible vantage point of the load.
3. Time Savings
   The setup time for a spider crane is remarkably short. Their ability to access areas directly means less time spent on complex rigging or transporting materials by hand.

Mobile Crawler Spider Crane Manufacturer

As a mobile spider crane manufacturer, we believe the right lifting solution makes all the difference on a jobsite. A mobile spider crane offers unmatched flexibility for tight spaces and complex lifting needs. Whether you are working indoors or outdoors, choosing the right equipment improves safety and efficiency. If you would like to learn how our solutions can support your next project, please don’t hesitate to contact us for more information.