3 Ton vs 4 Ton vs 5 Ton Spider Crane: Which Size Fits Your Job?

When site access is narrow, the 3‑ton spider crane is the better choice. The 4‑ton spider crane model maintains a machine width of approximately 1 metre while offering significantly higher lifting height and working radius. The 5‑ton spider crane is more suited to heavy‑industrial lifting, requiring a larger 15‑metre working radius and 17‑metre lifting height. For the final selection, always consider load weight, working radius, access width, ground conditions, and the model‑specific load chart.

For contractors, equipment distributors and project buyers, Onchtech supports practical spider crane selection for confined-space lifting applications, including industrial installation, rooftop work, façade construction, power maintenance and equipment relocation.

Start with the load chart, not the tonnage label

A spider crane’s rated tonnage generally refers to capacity under specific conditions. In real lifting work, available capacity changes with boom length, operating radius, lift configuration, ground support and attachment selection. A crane that is suitable for a short-radius lift may not provide the required capacity when the load must be placed farther from the machine.

How 3 ton, 4 ton and 5 ton spider cranes are commonly evaluated

The following comparison is a selection framework rather than a substitute for the load chart and technical documentation of a specific model. Capacity, dimensions and operating limits vary by configuration.

When a 5 ton spider crane may be the better fit

A 5 ton spider crane should be considered when the lifting plan requires more capacity reserve than a smaller machine can provide at the intended radius, or when demanding placement conditions require a compact tracked machine with substantial reach and stabilized support.

• Steel structure installation in industrial construction environments.
• Roof-level and upper-floor lifting where access is constrained.
• Curtain wall and exterior façade installation projects.
• Substation and power maintenance work requiring controlled lifting.
• Internal factory relocation of heavy equipment where conventional cranes cannot enter or set up effectively.

Onchtech 5 ton spider crane: key configuration points

The Onchtech 5 ton crawler spider crane is designed as a compact industrial lifting machine for restricted-access and complex jobsite conditions. Its configuration combines tracked mobility, telescopic boom reach and adjustable outrigger support to help operators position loads where larger cranes may be difficult to deploy.

A practical compact crawler crane selection checklist

1. Define the heaviest planned lift. Include the load, all lifting accessories and a realistic allowance for handling conditions.
2. Map the lift geometry. Record pick point, placement point, required height, working radius and potential obstructions.
3. Check access before crane class. Verify entry width, headroom, turning areas, floor loading considerations and travel route conditions.
4. Assess the setup surface. Confirm whether the ground or structure can support the machine and outrigger loads in the intended position.
5. Review the applicable load chart. Select only after verifying capacity at the actual radius and boom configuration.
6. Specify safety and control needs. Consider visibility, operator distance, site rules and whether options such as a remote control or moment indicator are appropriate.

Work with a manufacturing partner for the right configuration

Hunan Hongchang Machinery Co., Ltd. develops and manufactures Onchtech engineering machinery for global B2B customers. For spider crane projects, the selection process can be aligned with application requirements, emission preferences, operating conditions and required optional configurations.

Before finalizing a 3 ton, 4 ton or 5 ton spider crane, provide the expected load, maximum working radius, lift height, site access dimensions and ground conditions. This information supports a more reliable evaluation of the compact lifting equipment required for the job.