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KK8 – Smallest Oil-Free Compressor from Dürr Technik

Small oil-free piston compressor for universal applications

The KK8 is Dürr Technik’s smallest oil-free piston compressor, designed for applications where installation space is limited but high-quality compressed air is essential. Built with proven German engineering, it stands for durability, long service life and reliable performance. With continuous duty (S1), low noise levels and IP54 protection, it combines oil-free piston technology with robustness and efficiency. Available in dual-voltage and DC versions, the KK8 is used across various industries worldwide. As a maintenance-free compressor unit, it helps operators and engineers reduce lifecycle costs, minimize downtime and ensure maximum reliability. Long-term spare part availability and continuous product support further safeguard your investment.

Get in touch for individual advice on the KK8 small oil-free compressor

 

Typical Applications for the KK8 compressor units

Thanks to its robustness, quality and long service life, the KK8 is used in many industries: Railway sector: DC compressor unit for auxiliary air supply in trains (e.g. doors, valves, braking assistance, control systems). Laboratories: small, quiet compressor for gas chromatographs, analytical devices and laboratory automation. OEM integration: compact compressor aggregate for machines and devices with very limited installation space. Automation systems: reliable compressed air supply for valves, actuators and pneumatic controls.

Main Features of the KK8 Compressor Unit

  • Smallest oil-free compressor: extremely compact design, ideal for tight installation spaces.
  • Oil-free piston technology: maintenance-free, clean and environmentally friendly compressed air.
  • Silent operation: approx. 57–62 dB(A) sound pressure level, suitable for laboratories and noise-sensitive environments.
  • Duty cycle: 100% continuous operation (S1): robust under frequent start-stop cycles and varying loads.
  • Protection class IP54: safe and reliable in demanding environments.
  • Flexible dual-voltage motor: supports multiple voltages and frequencies for worldwide use.
  • DC variants for railway: specially designed for auxiliary air supply in trains and rail vehicles.
  • Long-term product support: ongoing product updates and availability of spare parts.

Download User Manual

Oil-free piston compressors

FAQ – KK8 Oil-Free Compressor

What makes the KK8 different from other small compressors?
The KK8 is Dürr Technik’s smallest oil-free piston compressor. Unlike many small compressors, it combines compact size, low noise and robust durability with long-term product support and spare part availability. This makes it ideal for both sensitive environments and demanding industrial use.

Is the KK8 compressor suitable for railway applications?
Yes. KK compressors are used in the railway sector. The KK8 in its DC versions is ideal for auxiliary air supply in trains and railway vehicles, powering pneumatic systems such as doors, valves and control circuits. Its robustness and quiet operation make it a reliable choice for rolling stock.

Can the KK8 compressor also be used in laboratories?
Yes. With noise levels of only 57–62 dB(A) and 100% oil-free compressed air, the KK8 is frequently used in gas chromatographs, analytical instruments and laboratory automation systems, where clean and reliable compressed air is essential.

How long does the KK8 compressor last?
Thanks to German engineering, oil-free piston technology and high-quality materials, the KK8 is designed for long service life even under continuous operation. Spare part availability and product updates further extend its usability over many years.

Does the KK8 compressor require any maintenance?
The KK8 is designed as an oil-free, maintenance-free piston compressor, meaning there are no oil changes or complex servicing tasks. This reduces operating costs and downtime. For optimum performance and long service life, regular filter replacement is recommended.

Diagram
Technical data

Technical data

Type Free air flow at 5 bar Noise level Motor input Current consumption Voltage Frequency Protection Class Weight Dimensions
  (l/min) PN dB (A) P1 (kW) (A) (V) (Hz) (IP) (kg) L x W x H (mm)
Type Free air flow at 5 bar Noise level Motor input Current consumption Voltage Frequency Protection Class Weight Dimensions
  (SCFM) PN dB (A) P1 (kW) (A) (V) (Hz) (IP) (lbs) L x W x H (in)
A-020 7 54 0.14 0.8 230 50 IP54 12 8.7x5.7x6.2
A-020 7 54 0.14 0,8 230 50 IP54 5,26 220x144x157
A-020 8 56 0.14 0.7 230 60 IP54 12 8.7x5.7x6.2
A-020 8 56 0.14 0,7 230 60 IP54 5,26 220x144x157
A-025 0.28 55 0.18 1.7 115 50 IP54 10.6 9.3x5.6x6.2
A-025 8 55 0.18 1,7 115 50 IP54 4,8 237x143x159
A-025 0.32 57 0.2 1.8 115 60 IP54 10.6 9.3x5.6x6.2
A-025 9 57 0.2 1,8 115 60 IP54 4,8 237x143x159
A-025 0.28 55 0.22 1.0 230 50 IP54 10.6 9.3x5.6x6.2
A-025 8 55 0.22 1,0 230 50 IP54 4,8 237x143x159
A-025 0.32 57 0.27 1.2 230 60 IP54 10.6 9.3x5.6x6.2
A-025 9 57 0.27 1,2 230 60 IP54 4,8 237x143x159
D-030 0.28 61 0.19 15.5 12 - IP00 9.7 8.2x4.2x6.1
D-030 8 61 0.19 15,5 12 - IP00 4,4 209x108x156
D-030 0.28 61 0.17 7 24 - IP00 9.7 8.2x4.2x6.1
D-030 8 61 0.17 7 24 - IP00 4,4 209x108x156
Type A compressors are fitted with single-phase AC motors.
Type B compressors are fitted with three-phase AC motors.
Type D compressors are fitted with DC motors.

How can we help you?

Get in contact with us by e-mail or telephone.

Germany
+49 7142 90 22-0
United Kingdom
+44 1761 422944
United States of America
+1 516-214-5659
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Any questions?

I would like to help you

Wilhelm Sevens