Spider Crane Mini Crawler Crane | 1Ton 3Ton 5Ton 8Ton Narrow Space Lifting | Diesel-Electric Dual Power 360-Degree Continuous Slewing | U-Type High-Strength Manganese Telescopic Boom | Frog-Leg Swing-Leg Outriggers No Dead Corner | Rubber Track Chassis No Ground Damage | Power Maintenance Curtain Wall Installation Workshop Repair Construction Site Mini Crane

Product Overview

Our factory-manufactured Spider Crane (Mini Crawler Crane) is a compact lifting device designed specifically for narrow spaces where large cranes cannot deploy. It offers multiple models including 1 ton, 3 ton, 5 ton, and 8 ton, with custom development available to meet specific needs. The machine features a U-type high-strength manganese steel single-plate telescopic boom design, occupying minimal space when fully retracted and delivering a large working radius when extended — the 1 ton model reaches 5 meters, and the 3 ton model reaches 7.8 meters. The outriggers use a combined frog-leg and swing-leg design, improving lifting safety while requiring less space, with no dead corners for support points — enabling stable work in extremely narrow spaces such as corners, stairwells, and indoors. The 360-degree continuous slewing device rotates at 60 seconds per revolution, allowing the operator to complete all-direction lifting without moving the machine. The diesel-electric dual power design allows operation with either a diesel engine or external power supply, offering convenience and energy savings. The rubber track chassis provides stable travel with no ground damage, suitable for indoor, exhibition hall, hospital, and other environments requiring ground protection. Widely applicable to power maintenance, glass curtain wall installation, construction sites, workshop repair, and more — the ideal solution for narrow space lifting operations.

Control & Operation Advantages

The machine uses a full hydraulic control system with a well-organized control lever layout and clear, intuitive operation logic — operators can master it after simple training. Boom telescoping, luffing, slewing, hoisting, and outrigger extension are all hydraulically driven, with smooth and precise movements enabling micro-operation for accurate load positioning. The 360-degree continuous slewing device is driven by a hydraulic motor, rotating smoothly without shock, and can stop and lock at any angle. Combined with the telescopic boom, it covers all points within the working radius. The outriggers use manual swing-out + hydraulic automatic support with a two-section leg design, providing a large support area when deployed for excellent machine stability — no wobbling or tipping during lifting. The travel system uses hydraulic motor drive with two speeds: high speed for quick site transfer and low speed for precise positioning. The track chassis offers excellent passability, stably traveling on slopes and uneven ground. The control station is equipped with safety warning lights and operation instruments, displaying real-time machine status for safe operation.

Core Engineering Structure

The boom uses a U-type high-strength manganese steel single-plate design with a U-shaped cross-section, offering excellent bending and torsion resistance with light weight and high strength. The multi-section telescopic design (4 sections for 1 ton, 5 sections for 3 ton) occupies minimal space when retracted and provides a large working radius when extended. Boom telescoping uses a hydraulic cylinder + wire rope synchronous telescoping mechanism for smooth and synchronized extension. Wear-resistant nylon sliders between boom sections provide small clearance and high precision, with no loosening under long-term use. The slewing device uses a high-precision slewing bearing with strong load capacity, smooth and precise rotation, driven by a hydraulic motor for 360-degree continuous stepless slewing. The outriggers use a combined frog-leg and swing-leg design, welded from high-strength steel plate with a two-section leg structure, manual swing-out + hydraulic automatic support, providing a large support span with no dead corners, adapting to various complex ground conditions. The chassis uses a rubber track design with high-strength rubber tracks that do not damage ground surfaces. The track frame is welded from thickened steel plate with strong load capacity, driven by a two-speed hydraulic motor. The body frame is welded from thickened steel plate and stress-relieved through aging treatment for excellent rigidity and load capacity. The hydraulic system uses high-quality hydraulic pumps, valves, and cylinders, with oil pipe joints strictly sealed to prevent oil leakage.

Multi-Scenario Adaptability

The Spider Crane is widely applicable to various narrow space lifting operations where large cranes cannot enter. Power maintenance: The compact machine can enter substations, power distribution rooms, and other narrow spaces. Paired with an aerial work platform basket, it can complete power equipment maintenance, insulator replacement, line maintenance, and other high-altitude work. Rubber tracks do not damage substation ground, and the diesel-electric dual power allows zero-emission electric operation indoors. Glass curtain wall installation: The machine can work inside building floors or in narrow exterior wall spaces, precisely lifting and positioning glass panels. The 360-degree slewing combined with the telescopic boom covers large curtain wall installation areas, making it ideal for high-rise building glass curtain wall installation. Construction sites: It can perform material lifting, equipment installation, steel structure assembly, and more in foundation pits, stairwells, floors, and other locations inaccessible to large cranes. Workshop repair: It can perform equipment lifting, maintenance, and replacement inside factory buildings and between production lines. Rubber tracks do not damage workshop floors, and no special ground protection is needed. It is also suitable for municipal engineering, landscaping, warehousing and logistics, exhibition hall setup, hospital equipment installation, and many other narrow space lifting scenarios.

Material Durability

The boom is welded from U-type high-strength manganese steel plate with high strength, good toughness, and fatigue resistance, strictly inspected by flaw detection to ensure welding quality — no deformation or weld cracking under long-term heavy-load operation. Boom telescoping sliders use high-strength wear-resistant nylon material with good self-lubrication and wear resistance, maintaining small clearance under long-term use. The slewing bearing is forged from high-precision alloy steel,经过 quenching and tempering heat treatment and tooth surface hardening, with high hardness, wear resistance, strong load capacity, and long service life. Outriggers and chassis frames are both welded from thickened high-quality carbon structural steel plate with sufficient thickness, using CO2 gas shielded welding with full and uniform welds, stress-relieved through aging treatment — the whole machine structure has high strength, impact resistance, and fatigue resistance. Rubber tracks use high-strength rubber + steel cord structure, tear-resistant, aging-resistant, wear-resistant, with no ground damage and long service life. Hydraulic cylinders use high-precision honed cylinder tubes and high-quality seals, with chrome-plated piston rod surfaces for wear and rust resistance and long service life. Hydraulic hoses use high-pressure steel wire braided rubber hoses with high pressure rating, and joints are strictly sealed to prevent oil leakage. The machine surface is treated with acid pickling, phosphating, and electrostatic powder coating for rust and corrosion resistance, adapting to outdoor dusty and humid work environments.

High Efficiency & Labor Savings for Profit

Compared to traditional large cranes and manual work, the Spider Crane increases efficiency by 5-10 times in narrow space lifting operations, with one machine replacing the workload of 10+ manual workers, significantly reducing labor costs. The compact and lightweight machine can enter interiors and floors through standard doorways, elevators, and stairs without removing doors or damaging building structures, saving大量 preparation and restoration time. The 360-degree continuous slewing combined with the telescopic boom allows the operator to complete large-area lifting without frequent machine repositioning, delivering high work efficiency. The diesel-electric dual power design enables zero-emission, low-noise electric operation indoors and autonomous diesel operation outdoors, adapting to various work environments without additional power generation equipment. Rubber tracks do not damage ground surfaces, eliminating the need for special ground protection or steel plate laying, saving ground protection costs and time. With low investment and fast return, it typically pays for itself in 3-6 months under normal use. For rental operators, spider cranes command good daily rental rates with high utilization, making them an excellent investment. One machine covers lifting needs across power, curtain wall, construction, maintenance, and other industries, with a wide business scope and strong profitability.

Zero-Basis Operation & After-Sales Support

The machine is fully assembled,调试, and load-tested before shipment. Upon delivery, simply add fuel (or connect power) and hydraulic oil to start using — no complex installation required. A complete operation manual, maintenance guide, safety operation regulations, and operation videos are included, enabling zero-experience users to get started quickly. The factory provides free operator training and safety training. The entire machine comes with a 12-month warranty, with free replacement of non-human-damaged parts during the warranty period. The hydraulic system and structural components receive extended warranty. Lifetime technical support and original spare parts supply are provided, with a professional engineer team available online to answer usage questions. Wear parts (hydraulic oil, filters, oil seals, track plates, sliders, etc.) are kept in stock for immediate shipment, ensuring no machine downtime. Customization of boom length, outrigger type, power configuration, body color, work basket, and more is supported to meet individual customer needs. Export wooden crate packaging and full set of export customs documents can be provided, supporting FOB/CIF/EXW and other trade terms, with a professional foreign trade team handling the entire process for worry-free overseas procurement. The machine complies with national lifting machinery safety standards,经过 strict load testing and safety inspection before shipment to ensure safety and reliability.