
Are you looking for a fast way to apply plaster on walls? YG Machinery brings you a high-performance mortar sprayer machine. This equipment pumps and sprays cement mortar directly onto surfaces. It replaces slow manual troweling. You can achieve smooth, even coats in much less time. This equipment handles various mortar mixes. It works well for both indoor and outdoor projects. The machine is simple to operate. Even workers with basic training can use it effectively. By choosing this tool, you boost your daily output. You also lower labor expenses and reduce material waste. Whether you need a cement plaster spray machine for new walls or repairs, this unit delivers consistent results. At YG Machinery, we design every cement mortar spray machine for reliability and long service life.
Mortar Sprayer Machine Technical Parameters
| Greatest Pressure | 3 MPa | 3 MPa | 3 MPa | 3 MPa |
| Capacity | 3 m²/h | 3 m²/h | 3–4 m²/h | 4 m²/h |
| Applicable Material Ratio (Water, Ash, Sand) | 0.7–1:1:3 | 0.7–1:1:3 | 0.7–1:1:3 | 0.7–1:1:3 |
| Main Motor Power | 4 kW | 7.5 kW | 8 hp / 12 hp | 7.5 kW |
| Max Particle Size | ≤4 mm | ≤8 mm | ≤8 mm | ≤8 mm |
| Conveying Distance (H/V) | 30 m / 20 m | 50 m / 30 m | 50 m / 30 m | 50 m / 30 m |
| Hopper Volume | 60 L | 80 L | 80 L | 100 L |
| Feed Pipe Diameter | 32 mm | 32 mm | 32 mm | 32 mm |
| Weight | 200 kg | 320 kg | 320 kg | 320 kg |


Main Components and Working Principle of Cement Plaster Spray Machine
The cement plaster spray machine includes several key parts.
- Hopper. The large hopper holds the premixed mortar. Its capacity ranges from 60L to 100L. This allows continuous work without frequent refills.
- Motor and Pump Assembly. A powerful motor drives the pump. The pump uses a rotor or piston design. It generates up to 3 MPa pressure to push the material forward.
- High-Pressure Delivery Hose. The hose connects the pump to the spray gun. It withstands high pressure. The 32mm diameter ensures a smooth material flow.
- Spray Gun and Air Compressor. The gun mixes compressed air with the mortar. This atomizes the mix into a fine spray. Some models include a built-in air compressor. The working principle is straightforward. You pour premixed mortar into the hopper. The motor spins the pump rotor or piston. This creates pressure that forces the mortar through the hose. When the material reaches the nozzle, compressed air atomizes it. The operator moves the gun across the wall in a steady motion. This design allows continuous and fast spraying. It greatly reduces worker fatigue. Always check the particle size before loading. Large aggregates can block the hose. Regular cleaning keeps the unit in top condition.
Mortar Spraying Machine Construction Process
The working steps are easy to follow.
- Surface Preparation. Clean the wall thoroughly. Remove dust, oil, and loose particles. Dampen the surface if it is too dry. This helps the mortar bond better.
- Machine Setup. Place the mortar spraying machine on stable ground. Connect the air compressor, water hose, and material hose. Tighten all clamps. Turn on the machine briefly to test the spray pattern.
- Mortar Mixing. Prepare the mortar according to the ratio. Use clean sand and fresh cement. Mix until you get a uniform, lump-free paste.
- Spraying Operation. Adjust the air pressure to a suitable level. Hold the spray gun at a 90-degree angle. Keep the nozzle 10–20 cm from the wall. Move the gun in even, overlapping strokes. This ensures a consistent coat thickness.
- Leveling. After spraying a section, use a straight edge to level the plaster. A trowel can smooth the surface. Work quickly before the mortar sets.
- Cleaning. Flush the hoses, gun, and nozzle with clean water. Remove any leftover mortar. This prevents blockages and corrosion. Proper maintenance extends the life of your mortar spraying machine. By following these steps, you achieve high-quality plastering.


Application Fields of Cement Mortar Spray Machine
This machine is versatile. You can use it in many types of projects.
- Residential Buildings. Spray interior and exterior walls fast. It handles single houses and apartment blocks.
- Commercial Construction. Cover large wall areas, lobbies, and ceilings. It works efficiently in offices, malls, and hotels.
- Infrastructure Projects. Apply tunnel linings, slope protection, and bridge piers. The cement mortar spray machine delivers strong adhesion.
- Special Coatings. Spray fireproof mortar, waterproof layers, and repair compounds. Adjust the air pressure for different mixes. With these capabilities, the cement mortar spray machine suits new builds and renovations. It reduces rework. Contractors trust its performance. Its mobility allows use on high floors. Simply move the hopper and hoses.
YG Machinery Advantages
YG Machinery provides several key benefits.
- High spraying speed. Our mortar sprayer machine reaches capacities up to 4 m²/h. This cuts project time sharply.
- Robust construction. We use quality steel and wear-resistant parts. The machines withstand harsh job-site conditions.
- Simple operation. The control panel is user-friendly. Workers learn to operate it in just a few hours.
- Cost savings. Automatic spraying reduces labor by half. It also minimizes mortar waste.
- Versatile power options. You can choose electric or diesel engine models. This fits sites with different power access.
- Reliable after-sales service. YG Machinery offers training, spare parts, and technical support.
- Easy maintenance. The modular design allows quick cleaning. Spare parts are readily available. These advantages make our cement mortar spray machine a smart investment.


FAQ About Mortar Sprayer Machine
A: It sprays 3 to 4 m² per hour, depending on the model. The YG711 reaches 4 m²/h. This high output allows you to cover large walls quickly.
A: Yes, you can spray gypsum plaster after adjusting the mix and air pressure. We also offer a dedicated Gypsum Plaster Machine for best results.
A: Match the model to your project size and material type. For fine plaster with small particles, choose YG311. For standard cement mortar, YG318 or YG500 works well. Also, consider hopper volume and conveying distance.
A: Use sand with particle size within the machine’s limit. Maintain the correct water-cement ratio. Clean the hose and nozzle after each use. These steps prevent clogs and ensure smooth operation.
A: Most models reach 50 m horizontally and 30 m vertically. This is suitable for high-rise buildings. Check the parameter table for exact figures per model.

Mortar Sprayer Machine Manufacturer – YG Machinery
YG Machinery is a professional mortar sprayer machine manufacturer with over 15 years of export experience. We serve customers in more than 50 countries. Our factory uses advanced CNC machines and strict quality checks. Each unit is tested before shipment. We also offer complementary machines to complete your plastering project.
- Gypsum Plaster Machine – specially designed for gypsum-based plasters.
- Automatic Wall Plaster Machine – fully automated wall plastering with high precision.
- Concrete Mixer and Pumping Machine – combines mixing and pumping for grouting and foundation works.
These machines work together to streamline your construction process. Contact us today for a free consultation and quote. We provide installation videos and lifetime technical support. Choose YG Machinery for reliable and efficient plastering solutions.






