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The 175 HP (132 kW) Low-Pressure Oil-Free Screw Blower is a positive displacement rotary machine designed to generate large volumes of compressed air at low pressures (typically 0.05 MPa to 0.2 MPa / 0.5 to 2 bar) . Unlike traditional Roots blowers, it utilizes an internal compression principle with precision-machined screw rotors that do not require oil in the compression chamber, delivering 100% oil-free air certified to ISO 8573-1 CLASS 0.
| Oil-free Screw Blower BPM Series | ||||||
| Model | Power （kW） | Pressure（bar/kPa） | Volume flow（m³/min） | Pipe Diameter | Weight（kg） | Dimension (mm) |
| RK175BPM | 132 | 0.6/60 | 112.0 | DN300 | 2600 | 3300×1750×2350 |
| 0.8/80 | 98.0 | |||||
| 1.0/100 | 81.0 | |||||
| 1.1/110 | 73.0 | |||||
| 1.2/120 | 71.0 | DN250 | 2300 | 3100×1500×2150 | ||
| 1.5/150 | 58.0 | |||||
| 1.8/180 | 48.0 | DN200 | 1900 | 2700×1400×1900 | ||
| 2.0/200 | 44.0 | |||||
Superior Energy Efficiency
The internal compression design delivers over 35% energy savings compared to conventional Roots blowers, significantly reducing operational costs in continuous-duty applications .
Certified 100% Oil-Free Air
TÜV-certified to ISO 8573-1 CLASS 0, ensuring absolutely no oil contamination—critical for sensitive processes where even trace oil can compromise product quality .
Ultra-Low Noise Operation
Advanced European-designed intake and exhaust silencing systems achieve noise levels as low as 60 dB(A) , creating a safer, more comfortable working environment compared to traditional blowers .
High-Performance Components
Equipped with IE5 Permanent Magnet Synchronous Motors (highest efficiency class) and SKF bearings rated for 100,000+ hours of service life, ensuring long-term reliability and minimal maintenance .
Smart Control & Easy Installation
Features PLC with 7-inch touchscreen, multiple control modes (pressure/DO value/frequency), and RS485/Ethernet for remote monitoring. The integrated plug-and-play design requires no anchor bolts, simplifying installation
Typical Applications
Oil-Injected Screw Compressors
Suitable for compressors ranging from 5.5kW to 400kW, with working pressure of 6–13 bar and air delivery of 0.84–75.1 m³/min .
Industrial Air Systems
Widely used in manufacturing, automotive, and general industrial compressed air systems requiring reliable load/unload control .
New Equipment & Retrofits
Can be installed in new compressor packages or used as a replacement part for existing systems.
The 175 HP (132 kW) Low-Pressure Oil-Free Screw Blower is a positive displacement rotary machine designed to generate large volumes of compressed air at low pressures (typically 0.05 MPa to 0.2 MPa / 0.5 to 2 bar) . Unlike traditional Roots blowers, it utilizes an internal compression principle with precision-machined screw rotors that do not require oil in the compression chamber, delivering 100% oil-free air certified to ISO 8573-1 CLASS 0.
| Oil-free Screw Blower BPM Series | ||||||
| Model | Power （kW） | Pressure（bar/kPa） | Volume flow（m³/min） | Pipe Diameter | Weight（kg） | Dimension (mm) |
| RK175BPM | 132 | 0.6/60 | 112.0 | DN300 | 2600 | 3300×1750×2350 |
| 0.8/80 | 98.0 | |||||
| 1.0/100 | 81.0 | |||||
| 1.1/110 | 73.0 | |||||
| 1.2/120 | 71.0 | DN250 | 2300 | 3100×1500×2150 | ||
| 1.5/150 | 58.0 | |||||
| 1.8/180 | 48.0 | DN200 | 1900 | 2700×1400×1900 | ||
| 2.0/200 | 44.0 | |||||
Superior Energy Efficiency
The internal compression design delivers over 35% energy savings compared to conventional Roots blowers, significantly reducing operational costs in continuous-duty applications .
Certified 100% Oil-Free Air
TÜV-certified to ISO 8573-1 CLASS 0, ensuring absolutely no oil contamination—critical for sensitive processes where even trace oil can compromise product quality .
Ultra-Low Noise Operation
Advanced European-designed intake and exhaust silencing systems achieve noise levels as low as 60 dB(A) , creating a safer, more comfortable working environment compared to traditional blowers .
High-Performance Components
Equipped with IE5 Permanent Magnet Synchronous Motors (highest efficiency class) and SKF bearings rated for 100,000+ hours of service life, ensuring long-term reliability and minimal maintenance .
Smart Control & Easy Installation
Features PLC with 7-inch touchscreen, multiple control modes (pressure/DO value/frequency), and RS485/Ethernet for remote monitoring. The integrated plug-and-play design requires no anchor bolts, simplifying installation
Typical Applications
Oil-Injected Screw Compressors
Suitable for compressors ranging from 5.5kW to 400kW, with working pressure of 6–13 bar and air delivery of 0.84–75.1 m³/min .
Industrial Air Systems
Widely used in manufacturing, automotive, and general industrial compressed air systems requiring reliable load/unload control .
New Equipment & Retrofits
Can be installed in new compressor packages or used as a replacement part for existing systems.
