Screw compressor KOMPBERG® BSDF

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Overview
BERG KOMPBERG® BSDF screw compressors cover 18.5–250 kW and are built on the BSD platform. BSDF models combine variable-speed drive, a large slow-running air end, an energy-saving CMC controller and German-brand inverters (commonly Siemens) to provide regulated output over the full control range. Direct 1:1 drive reduces component count and transmission losses. Units are designed for full maintainability and lower sound levels.

Master controller (RC / RC-S)
The optional BERG RC/RC-S master controller handles start/stop of compressor groups, pressure control, optimal load distribution, leader selection and threshold settings. Remote monitoring is available via web interface and Modbus (TCP/RTU) where supported.

Key features

• Frequency control (variable speed) for energy-adaptive operation (energy savings up to ~35% depending on installation).
• Direct drive 1:1 (no gearbox) to minimise transmission losses and reduce parts count.
• Large low-speed air end for improved efficiency and service life.
• Energy-saving CMC controller and German inverters; Siemens motors/controllers commonly used.
• Designed for 100% maintainability with accessible service doors and reduced moving parts.
• Lower noise levels due to low-speed direct-drive design; larger units use centrifugal/high-efficiency cooling fans.
• Oil-injected variants for sealing and durability; integrated refrigeration dryer optional on some models.

Applications

• Manufacturing: supply for production lines and machine tools.
• Mechanical engineering: powering manufacturing processes and equipment.
• Food production: hygienic compressed air applications (select appropriate configurations).
• Healthcare: medical compressed air supply for hospitals and clinics (use oil-free variants where required).
• Automotive: painting, pneumatic tools and assembly processes.

How rotary screw compressors work
Two intermeshing rotors rotate in opposite directions inside a casing. Air is drawn in and compressed continuously in the inter-rotor space, providing a steady supply. Variable-speed control adjusts output to demand for improved energy efficiency.

Technical data (summary)
Model | Capacity 7.5 bar (m3/min) | Capacity 10 bar (m3/min) | Capacity 13 bar (m3/min) | Dimensions (LxWxH mm) | Power transmission | Noise level (dB) | Nominal motor power (kW) | Air connection
BSDF 18 | 0.9 - 3.2 | 0.9 - 2.7 | - | 720x1300x1460 | Direct drive | 70 | 18.5 | G 3/4
BSDF 22 | 0.9 - 3.7 | 0.9 - 3.1 | - | 720x1300x1460 | Direct drive | 70 | 22 | G 3/4
BSDF 30 | 1.7 - 5.3 | 1.5 - 4.4 | 1.2 - 3.3 | 1750x900x1450 | Direct drive | 75 | 30 | G 1 1/2
BSDF 37 | 1.6 - 6.4 | 1.6 - 5.4 | 1.6 - 4.8 | 1750x900x1450 | Direct drive | 75 | 37 | G 1 1/2
BSDF 45 | 2.4 - 7.7 | 2.5 - 7.0 | 2.0 - 5.8 | 2000x1000x1640 | Direct drive | 75 | 45 | G 1 1/2
BSDF 55 | 2.6 - 9.9 | 2.5 - 8.5 | 2.3 - 6.6 | 2000x1000x1640 | Direct drive | 75 | 55 | G 1 1/2
BSDF 75 | 4.6 - 13.6 | 3.6 - 12.3 | 3.5 - 9.4 | 2100x1030x1670 | Direct drive | 75 | 75 | G 2
BSDF 90 | 4.6 - 16.2 | 4.2 - 13.6 | 3.4 - 11.4 | 2550x1485x2130 | Direct drive | 83 | 90 | G 2
BSDF 110 | 9.6 - 19.2 | 8.4 - 16.9 | 7.0 - 14.1 | 2550x1485x2130 | Direct drive | 83 | 110 | G 2
BSDF 132 | 11.5 - 23.0 | 10.2 - 20.5 | 8.3 - 16.5 | 3300x1600x1800 | Direct drive | 83 | 132 | G 2 1/2
BSDF 160 | 15.0 - 30.0 | 12.3 - 24.5 | 11.3 - 22.6 | 3300x1600x1800 | Direct drive | 83 | 160 | G 2 1/2
BSDF 200 | 17.3 - 34.6 | 15.5 - 31.0 | 13.0 - 26.1 | 4000x2100x2200 | Direct drive | 85 | 200 | DN 100
BSDF 250 | 20.0 - 40.0 | 18.0 - 36.0 | 15.0 - 30.0 | 4000x2100x2200 | Direct drive | 85 | 250 | DN 100

Technical specifications

• Series name: KOMPBERG® BSDF.
• Power range: 18.5–250 kW (nominal motor powers listed per model).
• Capacity ranges at reference pressures 7.5 / 10 / 13 bar as listed above.
• Direct drive 1:1 across the series to minimise transmission losses.
• Typical noise levels: approx. 70–85 dB depending on model.
• Air connections vary by model (G 3/4 to DN100).
• Control: CMC controller; optional RC/RC-S master controller for group control and remote monitoring (Web, Modbus TCP/RTU).
• OEM components: German-brand inverters, Siemens motors/controllers and high-quality filters commonly used.