When selecting a compresseur d'air à vis, many users struggle to determine which specifications are best for their factory operations. While some refer to power ratings in kilowatts (kW), others use horsepower (HP) ou product model numbers. So, how do you calculate and understand the correct specifications?
Au Baldor, we’ve simplified the process to help you make informed decisions when purchasing your air compressor.
Understanding Compressor Power Ratings
The most common method to evaluate a screw air compressor is by its power rating. In China and many other regions, HP (horsepower) is still frequently used in model naming conventions. Here’s a quick conversion formula:
Screw Air Compressor Power (kW) = Horsepower (HP) × 0.75
For example, a 75HP screw compressor is calculated as:
📌 75 × 0.75 = 55 kW
This means that when someone refers to a 75HP air compressor, it is equivalent to a 55kW unit in electrical terms.
How Baldor Names Its Compressor Models
Each manufacturer has its own naming system. At Baldor, our product models reflect both power et technology type.
Here are some examples from our catalog:
- BD-30PM – A 22kW Permanent Magnet Variable Frequency Screw Air Compressor
- BD-22EPM – A 22kW EPM Series Permanent Magnet Inverter Compressor
- BD-75 – A 75HP standard fixed-speed screw air compressor
Our PM series (Permanent Magnet VSD) and EPM series use high-efficiency motor technology for greater energy savings.
Introducing the H-Series All-in-One PM Compressors
Baldor’s latest innovation—the H-Series Integrated Permanent Magnet Screw Air Compressors—is engineered for high performance, low noise, and compact size. Key features include:
- 🌀 B&D high-efficiency air-end: Delivers high air output and stable performance
- 🔇 Ultra-quiet fan system: Powerful airflow with excellent cooling efficiency
- ⚙️ Water-cooled PM motor: Small, efficient, and perfect for space-limited facilities
- ⚡ Variable frequency drive: Enables stepless speed control and reduces unloading energy loss
- 🌍 Exhibition-proven design: Frequently showcased in international expos with widespread user recognition
How to Choose the Right Model
When choosing a screw air compressor, consider the following:
| Factor | Description |
|---|---|
| Air Demand | Know your average and peak compressed air usage |
| Pression de service | Select a compressor rated slightly above your system pressure |
| Power Source | Choose between fixed-speed or inverter-driven (VSD) based on stability needs |
| Compressor Size | Ensure sufficient airflow (CFM/m³/min) for your tools or processes |
| Installation Environment | Space, cooling type (air-cooled/water-cooled), and noise level matter |
Need help sizing your compressor? Contact our l'équipe d'assistance technique pour obtenir l'assistance d'un expert.
Réflexions finales
Choosing the right screw air compressor model is more than just picking horsepower—it’s about matching power, pressure, and air volume to your specific industrial needs. At Baldor, our goal is to provide not only advanced compressor technology but also professional support to help you make the right decision.
🛠️ Browse all Baldor Screw Air Compressors