Oil Free Air Compressors Oil-free Screw Air Compressor DSP Series

Index

Outline
Specifications
Features

Discover the exceptional benefits of oil-free compressors designed for unparalleled reliability, remarkable durability, and superior performance with Certified Class 0 Oil Free air.

Specifications

Capacity Control	Fixed Speed / Variable Speed
Cooling Method	Air Cooled / Water Cooled
Output	15 - 240 kW
Discharge Pressure	0.7 - 1.0 MPa
Discharge Capacity	2.0 - 40.5 m3/min

Features

Variable Speed Type

Variable speed
IE3 motor or DCBL motor
User friendly touch screen
Allowable ambient temperature 45℃
Adjustable discharge air pressure & capacity (PQ wide mode)
Intelligent pressure control (IPC)
Constant operation pressure function
Emergency stop button
Stainless Steel Rotor with special heat resistance coating

Fixed speed type

IE3 motor
User friendly touch screen
Allowable ambient temperature 45°C
Intelligent pressure control (IPC)
Emergency stop button
Automated unload stop
Stainless Steel Rotor with special heat resistance coating

Hitachi Innovation of Screw Air-End Technology

Stainless Steel Rotor

The rotor material, machined by high-precision grinding, is a special stainless steel that excels in corrosion resistance and durability. In addition, to minimize internal leakage, the rotor is mirror finished to ensure proper clearance, taking thermal expansion during operation into consideration.

High Performance Rotor Profile

Rotors exposed to discharge temperatures of 300° C or more in single-stage machines and 200°C or more in two-stage machines undergo significant thermal expansion.

Hitachi’s own 3D compensation technology is applied to ensure that appropriate clearance is maintained during operation with thermal expansion.

High Performance Coating

The rotor is coated with a solid lubricant to further reduce gaps between rotors and improve performance. This solid lubricant coating has sufficient performance even in harsh environments of over 300°C. Hitachi’s unique technology is applied to this coating.

Premium Air Quality

True Oil-free Air at Class 0 Level

Test and analysis of condensation of oil in the discharge air of Hitachi Oil-free Screw Compressor (DSP) are implemented by third party based on ISO8573-1 standard. By the test result, oil contained in the discharge air of Hitachi DSP is proved and certified as the highest level of quality air "Class 0".

Multi-Function Touch Panel