21-Meter Concrete Placing Boom with Three-Section Arm
This concrete placing boom features a three-section articulated arm, providing a reach of 21 meters. Its hydraulic system allows for smooth and controlled movements, enhancing productivity and minimizing material waste.



Technical Specifications
Overview
High-Efficiency 21-Meter Concrete Placing Boom
The PB21B-3R is a mobile hydraulic concrete placing machine designed for precision and efficiency in high-rise, bridge, and infrastructure projects. Featuring a three-section 'R' folding articulated arm with a 21-meter reach, it ensures consistent delivery while minimizing material waste. Its lightweight, balance-arm-free design allows for flexible 360° rotation and easy relocation on-site via tower crane.

Key Performance Metrics
Technical Highlights
Boom Structure
Boom Section Details
| Section | Length (m) | Articulation Range |
|---|---|---|
| 1st Section | 8.4 | 0° to 90° |
| 2nd Section | 6.9 | 0° to 180° |
| 3rd Section | 5.7 | 0° to 180° |

Technical Specifications
Physical & Operational Data
- Free Standing Height: 3m
- Total Weight: 9150 kg
- Max Lifting Unit: 5850 kg
- Delivery Pipeline Diameter: Φ133 x 4.5 mm
- Delivery Hose Diameter: 5" x 3000 mm
- Operating Temperature: -20°C to 55°C
- Power Supply: 380V/50Hz (Customizable)
- Slewing Mode: Gear Slewing

Control & Features
- Operational Features
- Radio Remote ControlCable Remote ControlFully Hydraulic DriveInclined Outrigger StructureNo Balance Arm DesignIntegrated Pump Station

Optional Configurations
Customizable Options
- Custom Column Lengths: 4M, 5M, 6M, 10M
- Climbing Modes: Floor climbing or Shaft climbing
- Remote Brands: HBC or AUTEC
- Control Components: Omron/Schneider electrical components
- Valves: Electric proportional control or Slewing cushion valves
- Connectors: Push-in connectors and imported hydraulic hoses



