A6 Duty Underhung Crane 5 Ton S9m H10m Heavy-Duty

A6 duty class is a heavier duty classification than the more common A5. Here is the difference:

• A5 (Moderate Duty): Suitable for general workshop handling with moderate cycles per hour and moderate daily use — the most common duty class for standard industrial cranes
• A6 (Heavy-Duty / Intensive Duty): Designed for intensive, high-frequency material handling with many lifting cycles per hour and long daily operating hours
• Larger reliability margin: A6 components (motors, brakes, reducers, wire rope) are sized with a larger safety margin to handle the increased duty cycle
• Slower hoist speed: A6 cranes typically use slightly lower hoist lifting speeds (this model: 0.7/4.0 m/min) — prioritizing reliability and component life over maximum speed
• Longer service life at high frequency: A6 cranes are expected to run many more cycles over their lifetime without major component replacement

Choose A6 over A5 if your workshop runs the crane almost continuously — for example, in high-throughput production lines, intensive assembly operations, or high-cycle logistics facilities.

Choose an A6 duty underhung crane instead of A5 when:

• High cycles per hour: The crane runs many lifting cycles per hour (e.g., more than 10-15 lifts per hour continuously)
• Long daily operating hours: The crane operates for most of the working day, often in multi-shift operations
• High total lifetime cycles: The crane is expected to complete a very large number of cycles over its service life
• Production-critical operations: Downtime from crane failure would interrupt production significantly
• Continuous production lines: The crane is part of a continuous process where reliability matters more than speed

If your workshop runs the crane only occasionally or in moderate cycles, A5 is usually sufficient and more economical. Contact Yuantai Cranes with your cycle profile for a duty-class recommendation.

Eight numbers on this A6 duty underhung crane drawing must match your workshop, or the crane will not fit or operate correctly:

If any of these differ from your workshop, tell Yuantai before ordering — each change affects price and lead time on the A6 duty underhung crane.

200~400mm rail width is specified for this A6 duty underhung crane because:

• Wheel diameter Ø130mm — the wheel is designed to run on 200~400mm rail width
• 5t capacity and 9m span: The load moment requires a rail with sufficient head width and web thickness
• A6 heavy-duty cycles: The higher duty class adds more dynamic cycles on the rail, so a robust rail section is essential for long life
• Underhung crane design: The rail must support the end carriage running on the bottom flange
• Standard availability: 200~400mm rail width is common for A6 duty underhung cranes, easy to source and replace

Do not substitute a narrower rail without recalculating the wheel load, dynamic forces, and duty cycle. The Ø130mm wheel and 36.3 kN wheel load at A6 duty require 200~400mm rail width or equivalent.

No — this A6 duty underhung crane is configured for indoor workshop use as an underhung crane, underslung crane, or suspension crane. The crane runs on elevated runway rails supported by the building structure. Outdoor use would require:

• Different crane type: A gantry crane with ground rails and A-frame legs is more suitable for outdoor use
• Weather protection: Outdoor-rated electrical enclosures (IP55+) and anti-corrosion treatment
• Wind load design: Anti-wind devices and anchoring for outdoor wind exposure
• Rain cover: Protect the crane, hoist, and electricals from rain and snow
• Duty-class re-verification: Outdoor temperature variation, wind, and moisture may affect the achievable duty cycle

For outdoor applications, consult Yuantai Cranes for a suitable gantry crane or a weather-protected underhung crane solution.

To avoid surprises at installation, these items are outside the A6 duty underhung crane supply scope unless you specifically add them:

• Runway rail (200~400mm) and rail fasteners
• Runway beam and building column reinforcement
• Building structural support for the 36.3 kN wheel load at A6 duty
• Site power supply up to the crane isolator
• Duty cycle monitoring or logging systems (optional but useful at A6)
• Preventive maintenance schedule planning for high-frequency operation
• Erection crane and site lifting equipment
• Local electrical connection and permits

Because the A6 duty underhung crane runs at high frequency, the building structure and maintenance planning are critical — the runway beam and columns must support the 36.3 kN wheel load, and a preventive maintenance schedule should be established to keep the crane reliable at high duty. Yuantai can provide runway load drawings and maintenance guidance as optional items.

Send these eleven items and Yuantai will issue a free custom A6 duty underhung crane CAD drawing and proposal within 24 hours:

1. Required lifting capacity (t) — e.g., 5t
2. Crane span (m) — e.g., 9m
3. Required lifting height (m) — e.g., 10m
4. Duty class requirement — e.g., A6
5. Cycles per hour and daily operating hours
6. Rail width (mm) — e.g., 200~400mm
7. Number of cranes required (e.g., 1 unit)
8. Power supply (V / Hz / Ph) — e.g., 3P 380V 50Hz
9. Control requirement — e.g., remote control only, or pendant + remote
10. Load type and weight
11. Any special requirements (e.g., longer brake life, premium wire rope, spare parts package)

The more complete the list, the faster and more accurate the A6 duty underhung crane drawing and quote.

This published A6 duty underhung crane drawing and 3D rendering are a free technical reference — you may use them to plan your workshop and check fit. A project-specific A6 duty underhung crane GA drawing and 3D model are also free for standard configurations. A design fee may apply only for complex workshop conditions, non-standard spans, specialized duty-cycle engineering, or customized component upgrades. The A6 duty underhung crane drawing remains the property of Yuantai Cranes: unauthorized copying, use, or manufacturing without written authorization is strictly prohibited.