- Salgspris €3.762,98 Normalpris €4.228,07Grundpris
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Properly Sizing Direct-Drive Rotary Screw Compressors
Rotary screw compressors with 1:1 direct drive are available in the current product line for professional compressed air systems ranging from 11 to 90 kW. The category includes fixed-speed D models and variable-speed DV models. Both series are offered on a base frame and cover operating pressures of 8 or 10 bar.
The available flow rates range from approximately 1.3 m³/min at 11 kW to 15.4 m³/min at 90 kW. To ensure the correct selection, do not simply choose the next higher motor power rating. The starting point is the air demand of the connected equipment at the actual required system pressure.
1:1 direct drive as a Drive Concept
With direct drive, power is transmitted without the belt drive used in the other main series. For buyers, it is particularly important that the drive concept, power range, and operating profile match the planned compressed air station. The category is therefore intentionally separated from the belt-driven rotary screw compressors.
D Series for predictable compressed air needs
The fixed-speed D models range from 11 to 90 kW. Depending on the power rating, flow rates ranging from 1.3/1.5 m³/min to 13.4/15.4 m³/min are available at 8 or 10 bar. They are particularly suitable when air demand remains relatively constant over extended operating periods.
DV Series with Speed Control
The variable-speed DV models cover the same power range from 11 to 90 kW. Speed control allows for adaptation to fluctuating demand within the specified operating range. Whether this is energetically and technically feasible depends on the actual load profile.
Select direct drive
✅ 11 to 90 kW drive power
✅ 8 or 10 bar operating pressure
✅ Fixed-speed D Series for predictable demand
✅ Variable-speed DV Series for variable output
Plan air receivers and treatment systems separately
The direct-drive models listed here are mounted on a base frame. Air receivers, drying, filtration, and condensate treatment are therefore sized separately according to the specific system. This allows for flexible integration into new or existing compressed air systems.
Buy a direct-drive rotary screw compressor
When selecting a direct-drive rotary screw compressor, the flow rate, operating pressure, load profile, and existing peripheral equipment should be considered together. The subcategories distinguish between fixed-speed and variable-speed models, ensuring that the search is tailored to the appropriate system configuration.