MZB-10A
MZB-10A Screw Compressor – 7.5 kW, Direct Drive, 1100 l/min: Industrial Standard in Energy Efficiency and Reliability
MZB-10A 7.5 kW 8 bar screw compressor is an oil-filled single-stage compressor unit with direct drive, providing continuous compressed air supply at a delivery rate of 1100 l/min at a working pressure of 8 bar.
The unit is designed for round-the-clock operation (24/7) and fundamentally surpasses piston compressors of equivalent power in terms of service life, noise level and total cost of ownership. The MZB-10A is the optimal choice for small and medium-sized businesses that need a reliable and quiet source of compressed air without excessive maintenance costs.
COMPACTNESS AND LESS WEIGHT
Direct drive compressors
Direct-drive screw compressors represent the pinnacle of air compression engineering. This design transmits torque from the electric motor directly to the screw element via a flexible coupling, eliminating the need for belts or gears.
Key Advantages of Direct Drive
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Maximum Efficiency: The absence of intermediate components (such as belts) eliminates friction and slippage losses, ensuring near-lossless power transmission.
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Reduced Maintenance Costs: You no longer need to check tension, monitor condition, or perform regular belt replacements.
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Low Noise and Vibration Levels: The direct coupling connection operates significantly more quietly, improving the working environment in the compressor room.
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Extended Bearing Life: By eliminating the radial load typically caused by a tensioned belt, the service life of both the motor and screw air end bearings is significantly prolonged.
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Reliability in Harsh Conditions: Direct drive systems are more resilient to high temperatures and dusty environments, where belts would rapidly degrade.
Advantages and key features
- Industrial durability: Unlike piston compressors, the MZB-10A screw block is designed for continuous duty operation (24/7), which is
critical for automated production lines. - Low noise level (Cabin type): The enclosed cabinet design significantly reduces sound load, allowing the compressor to be installed directly in workshops next to workstations.
- High screw block service life: The use of modern rotor profiles and quality bearings minimises friction, increasing the service interval and overall service life of the unit.
- Compact ergonomics: Integrating the compressor and receiver into a single unit saves up to 20% of floor space compared to separate systems of equivalent power.
Applications
The power and delivery rate of the MZB-10A make it the ideal solution for the following industries:
- Food packaging: Powering filling and labelling machines.
- Injection moulding: Supplying pneumatic actuators of injection moulding machines for plastic product manufacturing.
- Textile industry: Operation of looms and fibre preparation systems.
- Semiconductor manufacturing: Supplying high-purity air to microelectronics assembly lines.
- Auto repair and paint shops: Powering a wide range of pneumatic tools and painting systems.
Advantages and Unique Selling Points of the MZB-10A
1. Direct drive without belt transmission — zero friction losses
Power from the electric motor is transferred to the screw block rotors directly via a flexible coupling. This eliminates belt slipping and heating, maximising transmission efficiency. The practical result — the same output at lower electricity consumption compared to belt-driven equivalents.
Additional effect: direct drive eliminates radial load from the motor and screw block bearings, extending their service life by 1.5–2 times.
2. Noise level 66 dB — install directly in the workshop
The enclosed sound-insulated design (Cabin type) ensures a noise level of 66 ± 2 dB. For comparison: a normal office conversation — 60 dB, a 7.5 kW piston compressor — 88–95 dB. This means the MZB-10A can be installed directly next to workstations without a separate sound-insulated compressor room.
3. BAOSI screw block with submersible oil separator
The BAOSI block with asymmetric rotor profile ensures high volumetric efficiency at 8 bar. The submersible oil separator reduces residual oil content in the compressed air outlet to 2–3 mg/m³, corresponding to the purity class per ISO 8573-1.
4. Intelligent controller
The integrated control panel with Russian/Romanian and English interface automatically manages start and stop, load/idle modes, keeps track of operating hours and issues warnings when maintenance is approaching.
Expert Opinion
Vitali Bolucevschi, compressor equipment engineer, 15 years of experience, Acvatron.md:
“In the 7.5 kW / 8 bar class, the key question is not the purchase price but the operating cost over three years. The MZB-10A with direct drive and BAOSI block, when the maintenance schedule is followed, operates without major overhaul for 25,000–30,000 hours. For a business running two shifts, that is 4–5 years without serious equipment investment. The noise level of 66 dB is a particular advantage:
clients from the furniture sector especially appreciate this, because they place the compressor in the same room as CNC machine operators.”
Applications of the MZB-10A Compressor
The 7.5 kW power and 1100 l/min delivery rate make the MZB-10A a versatile solution for the following industries:
Auto Repair and Tyre Service
Powering pneumatic tools (impact wrenches, grinders), tyre inflation, operation of lifting equipment and painting systems. The compressor handles peak load demands without interruption.
Paint Booth
Delivering stable pressure for spray guns (HVLP and conventional), uniform application of paints and lacquers, operation of pneumatic sanding tools for surface preparation.
Woodworking and Furniture Manufacturing
Powering edge-banding machines, pneumatic clamps, dust extraction systems and CNC equipment. Continuous air supply eliminates downtime on the production line.
Food Industry
Controlling valves and dampers on conveyor lines, driving packaging machines, filling and labelling operations. Where required, it is recommended to supplement the unit with a refrigerated air dryer to meet air quality requirements.
Textile and Light Industry
Powering looms, fibre preparation systems and pneumatic conveying systems.
Frequently Asked Questions about the MZB-10A Compressor
What is the maintenance schedule for the MZB-10A?
The first service is performed after 500 hours of operation, with subsequent services every 2000–3000 hours. Regular replacement of the air filter and compressor oil is critical for preventing rotor wear and maintaining performance.
Which receiver size should I choose: 120 or 200 litres?
For facilities with steady air consumption, 120 l is sufficient. If the process involves short peak loads (e.g. high-powered pneumatic tools), the 200 l model is recommended to maintain the necessary compressed air reserve.
Can the compressor be used in an unheated room?
The minimum recommended operating temperature — +5°C.
At lower temperatures the oil thickens, making cold starts difficult and reducing condensate separation efficiency. For seasonal use in cold environments, low-viscosity compressor oils are recommended.
How does the MZB-10A differ from a piston compressor of the same power?
Key advantages over an equivalent piston compressor:
continuous 24/7 operation without start-stop cycles;
noise level 66 dB vs 85–90 dB;
service interval from 2000 hours vs 300–500 hours for piston units;
stable, pulsation-free air pressure.
Do I need an air dryer with the MZB-10A compressor?
For most industrial applications (painting, food production, pneumatic tools) it is recommended to supplement the unit with a refrigerated air dryer. It cools the air to a dew point of +3°C, removing moisture and preventing pipe corrosion, condensate freeze-up in winter and damage to pneumatic tools.
| Air pressure (bar) | 8 / 10 / 12 |
|---|---|
| Air delivery (l/min) | 1100 / 950 / 800 |
| Power (kW) | 7.5 kW |
| Length (mm) | 800 |
| Width (mm) | 700 |
| Height (mm) | 930 |
| Weight (kg) | 240 |
| Screw block | BAOSI |
| Outlet connection (inch) | 1/2 |
| Noise level (dB) | 66 ± 2 |
High-technology screw block
Provides maximum output, reduced energy consumption and extended service life of moving components.
Energy-efficient motor
Energy efficiency +5%: Insulation class F, IP55 protection. Operates more efficiently and longer than standard solutions.
Oil tank with submersible separator
Clean air: The submersible separator reduces wear and operating costs, increasing service intervals.
Heavy-duty cooling system
The oversized radiator allows operation in demanding conditions without overheating, maintaining stable temperature and protecting the compressor from premature wear.
Reliable intake valve
Automatically regulates air supply depending on load. Distinguished by stable operation, high flow capacity and ease of use.
