Outdoor Cantilever Underhung Crane 5 Ton S0.39m H10m

This is a highly specialized outdoor cantilever underhung crane designed for very narrow rail spacing where the runway rails are extremely close together:

• Span (rail to rail): 0.39m — the two runway rails are only 390mm apart, which is extremely narrow for a 5t underhung crane
• Cantilever each side: 0.555m — the bridge girder extends 555mm beyond each runway rail, so the hoist can travel beyond the rail line on both sides
• Effective working width: Approximately 1.5m total (0.555m + 0.39m + 0.555m) — much wider than the rail span alone
• Why cantilever: In some outdoor structures, columns, beams, or existing supports force the runway rails very close together. The cantilever lets the crane still reach a useful working width
• Trolley gauge: 1000mm — the hoist trolley runs on a 1000mm gauge along the cantilever bridge girder

This configuration is unusual and always custom-engineered. If your outdoor site has a similar narrow-rail constraint, send Yuantai your rail spacing and required working width for a free feasibility check.

Both the counterweight and the rain cover are essential on this outdoor cantilever crane:

Counterweight:

• Narrow span, long cantilever: With only a 0.39m rail-to-rail span and 0.555m cantilever each side, the crane has very little wheelbase to resist overturning
• Overturning moment: When the 5t hoist lifts a load on the cantilever section, it creates a large overturning moment around the far rail
• Outdoor wind loads: Outdoor wind adds lateral forces that the counterweight also helps resist

Rain Cover:

• Weather protection: The rain cover protects the crane girder, NRSL hoist, motors, and electrical components from rain, snow, and dust
• Corrosion resistance: Outdoor exposure requires additional protection; the rain cover reduces water contact on critical surfaces
• Longer service life: Protection from the elements significantly extends the crane's working life outdoors

The counterweight mass and position, and the rain cover design, are calculated for each specific crane — based on capacity, cantilever length, outdoor exposure, and travel dynamics. Do not change either without a full engineering recalculation.

Nine numbers on this outdoor cantilever underhung crane drawing must match your site, or the crane will not fit or operate correctly:

If any of these differ from your site, tell Yuantai before ordering — each change affects price and lead time on the outdoor cantilever underhung crane.

200~400mm rail width is specified for this outdoor cantilever underhung crane because:

• Wheel diameter Ø140mm — the wheel is designed to run on 200~400mm rail width
• 5t capacity with cantilever: The cantilever design creates higher concentrated wheel loads than a normal underhung crane, so a wider rail is required
• Counterweight reaction: The counterweight adds extra load on the rail, requiring a wider rail section
• Outdoor durability: The rail must withstand outdoor temperature changes, moisture, and dust, so a robust rail section is essential
• Standard availability: 200~400mm rail width is common for heavier underhung cranes, easy to source and replace

Do not substitute a narrower rail without recalculating the wheel load and dynamic forces. The Ø140mm wheel and 36.3 kN wheel load require 200~400mm rail width or equivalent.

This crane is specifically configured for outdoor use, with the following outdoor features:

• Rain cover: Protects the crane girder, NRSL hoist, motors, and electrical components from rain, snow, and dust
• Counterweight verified for wind: The counterweight calculation accounts for outdoor wind loads on the crane and load
• 10m travel cable: Outdoor runway power supply via a cable rated for outdoor conditions
• Weather-resistant electricals: Outdoor-rated enclosures (IP55+) and corrosion protection on exposed surfaces

Additional items to consider for outdoor installations:

• Anti-wind devices: Rail clamps or storm anchors to secure the crane during high winds
• Drainage: Ensure the runway and support structure drain properly to prevent water pooling
• Lightning protection: Depending on the location and structure height
• Operator shelter: If pendant or remote control is used outdoors, provide a sheltered operating position

Yuantai can provide anti-wind specifications and outdoor electrical package details as optional items.

To avoid surprises at installation, these items are outside the outdoor cantilever underhung crane supply scope unless you specifically add them:

• Runway rail (200~400mm) and rail fasteners
• Outdoor runway beam and support column structure
• Outdoor structural support for the 36.3 kN wheel load
• Counterweight installation anchors and verification of available space
• Site power supply up to the crane isolator, plus the 10m travel cable routing
• Anti-wind devices and storm anchors (optional but recommended outdoors)
• Erection crane and site lifting equipment
• Local electrical connection and permits

Because the outdoor cantilever underhung crane is a specialized narrow-span design with a counterweight, rain cover, and travel cable, the outdoor support structure, counterweight location, and cable routing are critical — the runway beam and supports must handle the 36.3 kN wheel load, the counterweight must be positioned safely, and the travel cable must be routed for outdoor conditions. Yuantai can provide runway load drawings, counterweight layout drawings, and cable routing drawings as optional items.

Send these twelve items and Yuantai will issue a free custom outdoor cantilever underhung crane CAD drawing and proposal within 24 hours:

1. Required lifting capacity (t) — e.g., 5t
2. Rail center-to-center distance (span) — e.g., 0.39m
3. Cantilever length required each side (m) — e.g., 0.555m
4. Required lifting height (m) — e.g., 10m
5. Crane travel length (m) — e.g., 10m
6. Rail width (mm) — e.g., 200~400mm
7. Number of cranes required (e.g., 1 unit)
8. Available space for counterweight
9. Outdoor conditions (wind, rain, temperature range, dust)
10. Power supply (V / Hz / Ph) — e.g., 3P 380V 60Hz
11. Longest load length and weight
12. Control preference: pendant, wireless, cabin, or both

The more complete the list, the faster and more accurate the outdoor cantilever underhung crane drawing and quote.

This published outdoor cantilever underhung crane drawing and 3D rendering are a free technical reference — you may use them to plan your outdoor site and check fit. A project-specific outdoor cantilever underhung crane GA drawing and 3D model are also free for standard configurations. A design fee may apply only for complex outdoor conditions, non-standard cantilever designs, or specialized customization engineering (e.g., cantilever counterweight calculations, wind load verification, rain cover design, and outdoor cable routing). The outdoor cantilever underhung crane drawing remains the property of Yuantai Cranes: unauthorized copying, use, or manufacturing without written authorization is strictly prohibited.