A crawler concrete placing boom is a self-propelled machine that moves on tracks and places concrete exactly where needed. Traditional concrete placing equipment needs outriggers and fixed positions. This one does not. It walks on rough terrain. It places concrete while moving. No outrigger setup. No repositioning delays. For tunnels, bridges, and large foundations, our crawler concrete placing boom helps you pour faster and reach further.
YG Machinery offers reliable crawler concrete placing booms for tunnels, bridge construction, and infrastructure projects.
Technical Parameters of Crawler Concrete Placing Boom
| Model | YG-12 | YG-17-3R | YG-19-3R | YG-20-4M | YG-23-4M |
| Max working radius | 12m | 15m | 16.5m | 17.65m | 20.5m |
| Total weight | 3.5T | 4T | 6.8T | 8.5T | 9.5T |
| Overall dimensions (mm) | 4900x1420x2400 | 7028x1865x2400 | 9479x2300x2510 | 9037x2200x2513 | 9537x2200x2513 |
| Pitch angle | 0-80° | 0-80° | 0-90° | 0-90° | 0-90° |
| Rotation angle | 360° | 360° | 360° | 360° | 360° |
| Working temperature | -5℃ to 40℃ | -5℃ to 40℃ | -5℃ to 40℃ | -5℃ to 40℃ | -5℃ to 40℃ |
| Rotation brake | Normally closed | Normally closed | Normally closed | Normally closed | Normally closed |
| Engine power | Diesel 18kw | Diesel 55kw | Yunnai diesel 55kw | Yunnai diesel 65kw | Yunnai diesel 65kw |
| Control method | Manual/wireless analog control | ||||
| Boom folding type | 3-section Z | 3-section R | 3-section R | 4-section M | 4-section M |
| Pipe diameter | φ100 | φ125 | φ125 | φ125 | φ125 |
| Track size (mm) | 1560x1400x400 | 2514x2250x500 | 2514x2250x500 | 3500x2100x600 | 3500x2100x600 |
| Max travel speed | 3km/h | 3km/h | 3km/h | 3km/h | 3km/h |
All models feature steel tracks, 360° rotation, and wireless remote control.
Working Principle of Concrete Placing Machine
Hydraulic System
The diesel engine powers the hydraulic pump. The pump delivers oil at 25MPa pressure. The oil drives the arm, rotation, and track movement.
Arm Operation
The hydraulic cylinders extend and fold the arm sections. The arm reaches up to 20.5m. The pitch angle adjusts from 0° to 90°.
360° Rotation
The slewing motor rotates the arm 360°. Rotation works while the machine is moving. No need to stop to change direction.
Track Movement
The track drive motors move the machine forward and backward. Max speed is 3km/h. The machine moves while placing concrete.
Wireless Control
The operator uses a wireless remote. Control arm movement, rotation, and travel from a safe distance.
Boom Type Selection Guide
Different boom types suit different job sites:
| Boom Type | Models | Best For |
| 3-section Z type | YG-12 | Small sites, low clearance, tight spaces |
| 3-section R type | YG-17-3R, YG-19-3R | Standard tunnels, medium height, general use |
| 4-section M type | YG-20-4M, YG-23-4M | Large tunnels, high clearance, long reach |
3-section Z type – Folds compactly. Best for low clearance areas. Easy to transport. Works on small sites.
3-section R type – Good reach and folding balance. Most common type. Works for most tunnel and bridge jobs.
4-section M type – Longest reach. Best for large tunnels and wide pours. More flexibility in arm positioning.
Choose based on your tunnel height, pour width, and site space. Contact us for help selecting the right model.
Safety Protection Features
Overload protection – Maximum working load is 500kg. System stops if overloaded.
Overturning moment limit – 120kN·m limit. Prevents tipping on uneven ground.
Limit switches – Stops arm movement at max extension and max angle.
Safety valves – Prevents sudden arm drop if hydraulic pressure drops.
Emergency stop – Stops all functions instantly.
Track brake system – Normally closed brake. Locks tracks when stopped.
All safety devices are tested before each shipment. Regular inspection is recommended.
Customer Case – Long Tunnel Lining Project
A tunnel contractor in the Philippines was working on a 3km highway tunnel. The tunnel was narrow. Traditional concrete placing booms needed outriggers. There was no space to extend outriggers. Workers had to stop work, extend outriggers, pour a section, fold outriggers, move forward, and repeat. Each move took 45 minutes.
They switched to a YG-19-3R crawler concrete placing boom. The machine has no outriggers. It walks on steel tracks. It fits through the narrow tunnel entrance. The operator controls everything with a wireless remote.
The machine places concrete on the tunnel wall while walking forward. No stopping to set up. No folding outriggers. Continuous pour. The team finished 200 meters of tunnel lining per week. Before the YG machine, they finished only 80 meters per week.
Results:
- Lining speed: 80m/week → 200m/week (150% increase)
- Time saved per move: 45 minutes → 0 minutes (no outriggers)
- Workers needed: 6 people → 4 people
- Concrete quality: Consistent, no cold joints from stopping
The project manager said: “The YG crawler concrete placing boom changed our entire operation. No outriggers means no setup time. We just walk and pour. The track system handles the rough tunnel floor easily. We will use this on every tunnel job from now on.”
FAQ
Q: How far can this crawler concrete placing boom reach?
A: 12m to 20.5m depending on model. YG-23-4M reaches 20.5m.
Q: Does it need outriggers?
A: No. The track system provides stability. No outriggers needed. Saves setup time.
Q: Can it move while placing concrete?
A: Yes. Move and place at the same time. Continuous pouring.
Q: What terrain can it work on?
A: Mud, gravel, sand, uneven ground, slopes. Steel tracks handle rough conditions.
Q: Can I control it from a distance?
A: Yes. Wireless remote control. Walk behind the machine or control from a safe position.
Q: What is the max travel speed?
A: 3km/h. Slow enough for precise placement. Fast enough to move between sections.
Q: Which boom type should I choose?
A: 3-section Z for tight spaces. 3-section R for standard tunnels. 4-section M for large pours.
Why Choose YG Crawler Concrete Placing Boom
YG has been making concrete placing equipment for many years. Our crawler concrete placing booms feature no-outrigger design, steel track travel, and 360° rotation while moving. Each machine is tested before shipping.
We offer YG-12, YG-17-3R, YG-19-3R, YG-20-4M, and YG-23-4M models. Reach from 12m to 20.5m. Three boom types for different job sites.
Why customers choose YG:
- Same core components as top brands, 30-40% lower price
- CE and ISO9001 certified. Accepted in 90% of countries
- Standard models ship in 7 days. Custom orders in 30-45 days
- 24/7 English technical support. Spare parts ship in 48 hours
- Customization available: voltage, frequency, anti-corrosion, special sizes
YG crawler concrete placing booms have been exported to the Philippines, Indonesia, Malaysia, Brazil, and many other countries.
