Two Stage Diesel Stationary Screw Air Compressors

Description

SMC Two-Stage Diesel Stationary Screw Air Compressors are built around a high-performance screw air end and an oil-air separation barrel. Designed with dual screw rotors (commonly referred to as male and female rotors), the system compresses air through volume reduction as the rotors rotate in precise synchronization.

The screw air end, a two-shaft rotary design, draws in air through a suction filter and inlet control valve. Oil is injected into the compression chamber to cool, seal, and lubricate both the rotors and bearings. The compressed air and oil mixture then passes through a separation system, ensuring clean and efficient output.

Powered by a diesel engine and an optimized transmission system, the compressor operates at speeds best suited for consistent performance. The original design minimizes the need for maintenance, helping reduce both operational costs and downtime. All components are engineered for long service life, with oversized inlet filters, oil filters, and high-efficiency separators that maintain excellent air quality.

Models up to 22 kW (30 hp) use centrifugal-type filters and separators, further simplifying maintenance. With clearly marked “quick maintenance points,” routine service tasks can be completed in minutes, ensuring maximum uptime and minimal interruption.

Technical Details

Description
ModelSPDB855DSPDB1035DSPDB1105D
EmissionChina II StageChina II StageChina II Stage
EngineCummins/ 239 kW/ 320 HPYuchai/295kW/ 395 HPXichai/ 309 kW/ 415 HP
Diesel tank volume350 L415 L415 L
Air EndTwo Stage CompressionTwo Stage CompressionTwo Stage Compression
Dimensions (L×W×H)mm3,560×1,830×2,050 mm3,950×2,000×2,300 mm4,220×2,000×2,300 mm
Rated FAD24 m³/min29 m³/min31 m³/min
Rated Pressure22 bar24 bar25 bar
Weight3,450kg4,300kg4,500kg
Exhaust oil content≤ 3 PPM≤ 3 PPM≤ 3 PPM
Exhaust temperature80℃-110℃80℃-110℃80℃-110℃
Noise level (dB)≤85dB≤85dB≤85dB
Minimum reservoir pressure4.5bar4.5bar4.5bar
Maximum reservoir pressure (compressor unloading)7bar7bar7bar
Minimum starting temperature-10℃-10℃-10℃
Maximum ambient temperature45℃45℃45℃