In the field of heavy-duty lifting operations—from construction sites to industrial maintenance and emergency rescue—reliable, high-performance cranes are the backbone of efficient and safe work. SUNHUNK, a trusted name in industrial equipment, has raised the bar with its SUNHUNK Straight Boom Cranes, a series engineered to address the most demanding needs of modern job sites. With seven standout features that prioritize strength, stability, efficiency, and adaptability, these cranes are redefining what’s possible for same-tonnage lifting equipment. Let’s explore why SUNHUNK Straight Boom Cranes are becoming the top choice for businesses worldwide.

1. Q690 High-Strength Steel Welding: The Foundation of Strength and Lightness

The performance of a crane starts with its structural integrity—and SUNHUNK Straight Boom Cranes don’t compromise. Key structural components are welded using Q690 high-strength steel plates, the core material that makes Q690 high-strength steel crane a benchmark for durability. This material boasts exceptional tensile strength and lightweight properties, delivering two critical advantages: first, high strength ensures the crane handles heavy loads stably, reducing structural deformation risks; second, the lightweight design eases transportation and on-site maneuvering, cutting fuel costs and minimizing carrier vehicle strain. For teams needing power and agility, the Q690 high-strength steel crane design is irreplaceable.

2. Enhanced Hexagon Boom: 20% Stronger Lifting Capacity

The boom is the heart of any straight boom crane—and SUNHUNK’s upgrade makes enhanced hexagon boom crane stand out. The boom features an enhanced hexagon structure that ensures stable telescoping (even during heavy lifts) and boosts lifting capacity by 20% compared to standard hexagon designs. This means enhanced hexagon boom crane can handle heavier loads without sacrificing safety or precision, making it ideal for hoisting large construction materials or industrial machinery. The stable telescoping also reduces internal component wear, extending the boom’s lifespan and lowering maintenance costs.

3. Imported Telescoping Mechanism: Sequential Extension for Strong Load-Bearing

Efficiency and reliability in boom telescoping are non-negotiable—and SUNHUNK’s imported mechanism elevates SUNHUNK Straight Boom Cranes performance. Equipped with a three-stage cylinder and rigging telescoping system, the crane enables sequential boom extension for smooth, controlled movement. A key advantage: the first two telescoping arms are driven by independent cylinders, enhancing medium and short arms’ load-bearing capacity. Even in tight job sites using shorter boom lengths, SUNHUNK Straight Boom Cranes maintain strong lifting performance, eliminating power-for-space compromises.

4. 18.8m Maximum Operating Range: Industry-Leading Cross-Obstacle Capability

For job sites with obstacles (tall buildings, pipelines, existing structures), a crane’s operating range is critical—and 18.8m operating range straight boom crane leads the industry for same-tonnage equipment. SUNHUNK Straight Boom Cranes boast a 18.8m maximum operating range, giving operators flexibility to reach over or around obstacles easily, no repeated crane repositioning needed. Whether lifting materials to upper building floors or accessing hard-to-reach factory areas, 18.8m operating range straight boom crane reduces downtime, improves efficiency, and expands application scenarios.

5. Standard Torque Limiter: Safety That Doesn’t Compromise Productivity

Safety is paramount in lifting operations—and SUNHUNK Straight Boom Cranes integrate protection seamlessly. Each crane comes with a standard torque limiter (with override function) that prevents overloading, reducing accident risks. The override feature lets experienced operators handle controlled special tasks without slowing operations, balancing safety and productivity. This design ensures peace of mind for teams while keeping projects on track.

6. Low-Temperature Adaptability (-40°C): Performance in Extreme Conditions

Job sites don’t stop for cold weather—and neither does -40°C low-temperature adaptable crane. SUNHUNK Straight Boom Cranes’ main moving parts, electrical and hydraulic components, are engineered to work seamlessly at -40°C. This makes -40°C low-temperature adaptable crane ideal for northern construction sites, arctic logistics, or winter emergency response. Unlike conventional cranes that struggle with frozen fluids or stiff parts in cold, SUNHUNK’s design maintains consistent performance.

7. Standard High-Pressure Filters: Extending Hydraulic System Life

The hydraulic system is a crane’s lifeline—and SUNHUNK Straight Boom Cranes protect it with standard high-pressure filters. These filters remove hydraulic oil contaminants, improving oil cleanliness and preventing valve, cylinder, and pump wear. By reducing debris, they extend hydraulic component life, lower maintenance frequency, and minimize unexpected breakdowns—cutting long-term costs and keeping the crane in peak condition.

Why Choose SUNHUNK Straight Boom Cranes?

SUNHUNK Straight Boom Cranes aren’t just lifting equipment—they’re a comprehensive solution. From the Q690 high-strength steel crane’s strength-lightness balance, to -40°C low-temperature adaptable crane’s extreme weather performance, 18.8m operating range straight boom crane’s obstacle-crossing ability, and enhanced hexagon boom crane’s lifting power—every feature boosts productivity, safety, and cost-efficiency. For businesses demanding reliability and versatility, SUNHUNK Straight Boom Cranes are a long-value investment.

Elevate your lifting operations with SUNHUNK Straight Boom Cranes—where industry-leading innovation meets real-world functionality.

Keywords

SUNHUNK Straight Boom Cranes

Q690 high-strength steel crane

18.8m operating range straight boom crane

-40°C low-temperature adaptable crane

enhanced hexagon boom crane