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Views: 36549 Author: Belmont Ann Publish Time: 2025-11-21 Origin: Belmont Tech
Choosing the right centrifugal fan is critical for AHU manufacturers, HVAC system integrators, refrigeration equipment builders, and data-center cooling specialists. The performance of the fan directly impacts airflow stability, energy consumption, noise levels, and the long-term reliability of the entire system.
The Belmont B-Max Series Centrifugal Fans are engineered to deliver high efficiency, high static pressure, and robust durability—making them an ideal choice for OEMs and engineering professionals seeking a reliable and scalable ventilation solution.
This guide breaks down the B-Max Series in detail: design, performance, FanGrid modular options, and answers to the most common technical questions asked by global HVAC and refrigeration buyers.
Developed by Changzhou Belmont Intelligent Motion Co., Ltd., the B-Max Series includes a full range of backward-curved centrifugal fans powered by external rotor motors. The product line includes:
B250 / B280 / B310 / B355 / B400 / B450 / B500 / B560
(technical details on pp. 2–5 of the product manual)
These fans are widely used across:
Air Handling Units (AHUs)
Commercial HVAC systems
Cold-chain & refrigeration equipment
Cleanroom and purification systems
Data-center cooling and containment
Industrial and commercial ventilation
Backward-curved impellers generate strong static pressure while maintaining high efficiency, making them suitable for high-resistance systems such as filtration stages, coils, and plenum sections.
All models use:
Maintenance-free ball bearings
External rotor motors for efficient heat dissipation
Optimized blade profiles
(confirmed on pp. 2–5 of the catalog)
This ensures quiet, stable operation—ideal for hospitals, hotels, and commercial buildings.
B250–B280: IP54
B310–B560: IP55
Reliable for humid, low-temperature, and heavy-duty environments.
The B-Max Series covers diameters 250–560 mm, making it suitable for both compact and large-scale AHUs as well as modular FanGrid installations.
Based on the product manual (pp. 2–5) :
Aluminum alloy (most models)
High-strength composite blades (B355)
Black painted steel brackets
Silver sheet-steel support plates
Rigid construction to minimize vibration
External rotor type
S1 continuous duty
High thermal stability for 24/7 operation
0–10V analog control
PWM speed regulation
MODBUS-RTU interface (shown on page 6)
Supports both traditional HVAC controls and modern building automation systems (BAS/BMS).
A simplified engineering table based on the official data sheets (pp. 2–5) :
| Model | Power | RPM | Diameter | Typical Use |
|---|---|---|---|---|
| B250 | 1150 W | 4000 | 250 mm | Small AHUs, air purifiers |
| B280 | 950 W | 3100 | 280 mm | Compact refrigeration units |
| B310 | 3100 W | 3900 | 310 mm | Mid-size AHUs |
| B355 | 2700 W | 3150 | 355 mm | High static pressure systems |
| B400 | 3850 W | 2850 | 400 mm | Commercial HVAC |
| B450 | 3450–5750 W | 2220–2600 | 450 mm | Industrial AHUs |
| B500 | 3650–6100 W | 1980–2250 | 500 mm | Data-center cooling |
| B560 | 2500–5000 W | 1500–1800 | 560 mm | Heavy-duty ventilation |
The B-Max FanGrid (page 6 of the catalog) allows multiple fans to operate in parallel, offering:
More uniform airflow distribution
Improved coil heat-exchange efficiency
Direct-drive—no belts to replace
Built-in redundancy (N, N+1, N+2…)
Easy capacity expansion
Modular installation & simple maintenance
Control via 0–10V / PWM / MODBUS-RTU
This makes FanGrid technology ideal for data-center cooling, large AHUs, pharmaceutical cleanrooms, and mission-critical environments.
Belmont offers:
Full OEM customization
Support for special mounting dimensions
Tailored airflow & static pressure design
Rapid engineering support
Fast production and global delivery
Complete technical documentation
These strengths are highlighted in the introduction section of the manual (page 1) .
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Backward-curved impellers offer higher efficiency, better static pressure performance, and lower noise compared to forward-curved designs. This makes them ideal for modern AHUs, which often require strong pressure to overcome filtration and coil resistance.
Yes. The B-Max Series supports 0–10V, PWM, and MODBUS-RTU, enabling full integration with EC speed control, BAS/BMS systems, and smart ventilation platforms.
Absolutely. With IP54/IP55 protection, external-rotor motors, and maintenance-free bearings, the B-Max Series is designed for 24/7 operation in demanding conditions such as refrigeration units, humid AHU sections, and industrial ventilation.
A FanGrid offers:
Redundancy (no single-point failure)
Higher energy efficiency at partial loads
More uniform airflow
Shorter installation depth
Easier maintenance and quick replacement
This modular architecture is widely used in high-end HVAC and data-center cooling systems.
Yes. Belmont provides custom mounting plates, airflow optimization, special motor options, private-label branding, and tailored engineering support for AHU and refrigeration equipment builders.
You can contact the Belmont engineering team to request performance curves, CAD drawings, 3D models, and project-specific quotations.
With high efficiency, strong static pressure capability, robust construction, and modular FanGrid compatibility, the Belmont B-Max Series stands out as a premium centrifugal fan solution for:
AHU manufacturers
HVAC system integrators
Refrigeration equipment builders
Data-center cooling specialists
Industrial ventilation engineers
Whether you need a compact fan for a small AHU or a multi-fan modular system for a mission-critical environment, the B-Max Series delivers performance, reliability, and engineering flexibility.
Get in touch with our engineering team to receive datasheets and project-specific quotations.
