TD250A (TD5520A)

TD250A (TD5520A) Luffing Jib Tower Crane

Brand: Zhengxing
Model: TD250A (TD5520A)

Product Introduction

1. Technical Features

The TD250A (TD5520A) is a high-performance luffing jib tower crane designed for projects in crowded urban areas where limited space and high lifting efficiency are required. With a compact design, strong tower structure, and advanced control systems, it delivers stable, reliable, and safe operation.

• Compact luffing jib design minimizes the working radius and makes it ideal for high-density construction sites and multiple crane operations.

• 2.0 m × 2.0 m tower section provides excellent structural strength and low operating sway.

• The tower structure is manufactured from high-strength Q345 steel, ensuring durability and reliable performance.

• Maximum working radius: 55 m

• Maximum lifting capacity: 12 tons

• Tip load capacity: 2.0 tons

• Rated lifting moment: 2500 kN·m

• Free-standing height: 50 m

• Maximum attached height: Up to 200 m with wall ties.

2. Standard Tower Section

• Standard section dimensions: 2.0 × 2.0 × 3.0 m

• Main material: L200 × 200 × 20 mm Q345 high-strength angle steel

• Pin-shaft connection design allows quick installation, convenient transportation, and secure assembly.

• Multiple foundation solutions are available, including:

  • Outrigger fixing

  • Base frame counterweight fixing

  • Embedded anchor bolt fixing

3. Operation & Safety

• Elegant machine appearance with optimized structural design.

• High operating efficiency with advanced speed control technology.

• Smooth and stable luffing and slewing operations improve positioning accuracy.

• Independent external space capsule operator cabin provides a wide field of view and comfortable working environment.

• Equipped with complete mechanical and electromechanical safety protection devices suitable for demanding construction conditions.

Electrical Control System

Standard Version

• Hoisting mechanism adopts a multi-speed pole-changing motor with low inertia impact.

• Equipped with original Schneider Electric components for stable and reliable performance.

Energy-Saving Version

• Hoisting mechanism adopts variable frequency drive (VFD) control with a branded electrical control system.

• Provides smoother operation, reduced energy consumption, and higher efficiency.

Slewing & Luffing System

• The slewing mechanism uses a dual-wound rotor motor with series resistance speed regulation, ensuring smooth and accurate rotation.

• The luffing mechanism adopts a dual-speed motor control system, delivering stable movement and efficient operation.

Main Specifications