Discharge air volume
15-75kW Class
The AG and SG series boasts the same basic functions
as the top-of-the-line VX and VS series.
Kobelion's standard screw compressor series changes the concept of simplicity.
AG seriesSG series
The AG series pursues efficiency and
energy saving, supported by new type electronic monitor.
The SG series provides information needed for operation and
combines energy-saving control functions and simple operation.
Simple, yet highly sophisticated
Environment Suitability
Noise reduction (Kobelion's unique noise reduction strategy)
The use of a new type rotor design, the two-box unit design, new dust filter structure, and optimization of the sound absorbing material suppress operating noise,not only on the front side of the unit,but in any directions.New unit design also contributes to gentler operating sound.Moreover, the AG/SG900-1230 (Air-cooled models) employs an invertercooling fan in an attempt to further noise reduction.
New design of the dust filter structure enlarges the intake surface area.
The reduction of the opening area and enlargement of the intake surface area enable the intake of more clean air and significantly reduce noise coming from the sides of the unit.
(Air cooled models only of AG/SG370 900 1230)
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The world's highest level of clean air is supplied.
The use of a large oil separator element reduces oil mist in discharge air to 0.002cc/m3 or less. The resulting reduction in consumption of lubricating oil cuts the annual running cost.
Improved dust resistance
Intake filters for cooling air and the air-intake port to the airend have been enlarged. Enhanced resistance to dusty environments has also been provided by introducing a two-stage centrifugal dust-removal process.
Automatic oil reclaim system of mechanical seal
Waste oil from the mechanical seal does not need to be discharged outside.
Increased performance, efficiency, and reliability
Increased durability against high ambient temperature
The two-box design inside the package allows for efficient cooling of the unit. Larger coolers and use of a double-sirocco fan enables operation without unexpected shutdown even at an ambient temperature as high as 45ºC.
* Long-time continuous operation at an ambient temperature of 40ºC or higher may shorten the life of lubricating oil, electrical components, O-rings, etc. compared with normal operation.

Inverter cooling fan (AG/SG900-1230)
The use of an inverter-controlled cooling fan reduces power consumption of the fan under low loading operation.
-A waste of electricity consumption is minimized by controlling fan rotations with discharge air temperature.
-Durability is improved by stabilizing temperature inside the compressor unit.
-The fan rotation speed is forcefully raised in a high temperature environment to increase cooling capacity.
Motor protection function mounted
A totally-enclosed motor is used in all AG and SG models. The motor is protected by the standard equipment of the motor coil temperature detection mechanism.
Surge killer against 12,000-V lightning and Noise filter are built in.(AG)
Low maintenance
Long-Life Poly-V Belt
Replacement interval is every 12,000 hours. Tension adjustment is not needed during that time.
Equipped with Water-Removal function (Patent pending)
Daily drainage of condensed moisture is not required.
New type controller (SG)
The controller provides information needed for operation and maintenance to make operation even simpler.Furthermore, energy-saving functions are enhanced by three U-, EC-, and EL-mode operation controls .
(P- and U-mode operation controls for SG230-SG610.)
Other displayed descriptions
-Discharge temperature
-operation mode
-remaining time until grease up
(only displayed for SG900/1230)
New type electronic monitor included as standard (AG)
New type electronic monitor
Two-unit alternate operation and link operation with VX and VS extends the range of applications.