Laboratory compressor KK series

pistonoil-free

Overview
Oil-free small piston compressors (KK series) providing volumetric flows from approx. 7 l/min up to 200 l/min at 5 bar. Compact footprint for installation in vehicles, machinery and OEM equipment. Many models are suitable for continuous duty (S1) and for frequent start-stop cycles. DC variants available. Motor protection classes from IP00 to IP65 depending on model; typical operating temperature range −40 °C to +55 °C.

General benefits

• Oil-free piston technology for applications requiring oil-free compressed air
• Wide flow range covering small to medium pressure needs (approx. 7–200 l/min at 5 bar)
• Many maintenance-free designs and versions for continuous operation (S1)
• Variants with DC motors for mobile and rail applications
• Multiple motor protection ratings (IP00 / IP20 / IP44 / IP54 / IP65 depending on model)
• Wide ambient temperature capability for many models: −40 °C to +55 °C
• Compact size for easy integration into confined spaces

Series highlights

• Smallest unit: approx. 7 l/min at 5 bar
• Lightest unit: down to ~4.4–4.8 kg (typical lightweight KK8 variants)
• Highest capacity: up to ~200 l/min at 5 bar
• DC range: approx. 8–97 l/min at 5 bar for DC variants
• All models: oil-free piston design, many suitable for continuous duty and for demanding start-stop profiles

KK8 small compressors

• Designed for very compact OEM installations
• Typical flow at 5 bar: ~7–30 l/min (model-dependent)
• Very low weight: ~4.4–4.8 kg (light variants)
• Low sound pressure levels: approx. 55–61 PN dB(A)
• Dual-voltage motor options available (examples: 115 V, 230 V)
• Motor protection up to IP54 on selected variants

KK15 small compressors

• Targeted at valve and cylinder control in OEM systems and water-treatment applications
• Typical flow at 5 bar: ~15–45 l/min
• Compact and low-noise operation: approx. 57–69 dB(A) depending on model
• Voltage options across variants: 115 V, 230 V, 230/400 V, 380/415 V, 460/500 V (model-dependent)
• Motor protection classes vary: IP00, IP20, IP54

KK40 compact compressors

• Available in 1- and 2-cylinder versions for higher flow and durability
• Designed for continuous operation up to +55 °C ambient on many variants
• Integrated start-up volume to improve starting under load
• Low gas outlet temperatures and extended service life
• Typical flow at 5 bar: approx. 43–98 l/min
• Voltage examples: 110/115 V, 230 V, 230/400 V; motor protection up to IP54–IP65 depending on version

KK70 heavy-duty compressors

• Aerodynamic air-duct design for quiet operation
• DC motor versions commonly used for rail and mobile applications where long service life is required
• Typical flow at 5 bar: approx. 73–200 l/min
• Voltage examples: 100/110 V, 100/127 V, 230 V, 230/400 V (model-dependent)
• Motor protection classes: IP44, IP54, IP65 depending on model
• Many variants rated for continuous operation from −40 °C to +55 °C

Performance / representative flow data
Pressure Pe (bar) and representative flows at Pe (l/min):
0 bar (free) — see model ranges down to atmospheric flow
1 bar — small KK8/KK15 models: single-digit to mid double-digit l/min (model-dependent)
5 bar — KK8 ~7–30 l/min; KK15 ~15–45 l/min; KK40 ~43–98 l/min; KK70 ~73–200 l/min
Note: 60 Hz variants typically deliver approx. +18% flow vs 50 Hz.

Applications

• Integration in vehicles and mobile machinery requiring oil-free compressed air
• Valve and cylinder control in OEM applications
• Water-treatment and process-control systems
• Rail transport and other mobile applications (DC variants)
• Any application needing oil-free air with frequent start/stop cycles or continuous duty

Technical specifications

• Series designation: KK series (KK8, KK15, KK40, KK70)
• Air flow at 5 bar: approx. 7–200 l/min depending on model
• Typical voltages: single-phase and three-phase options (examples: 115 V, 230 V, 230/400 V, 380/415 V, 460/500 V); DC variants available
• Motor input power (P1): model-dependent (from fractions of a kW to larger values for high-capacity units)
• Protection classes: IP00, IP20, IP44, IP54, IP65 (model-dependent)
• Noise levels: approx. 55–73 PN dB(A) depending on model and configuration
• Operating temperature range (many models): −40 °C to +55 °C (model-dependent)
• Weights and dimensions vary by model (examples: lightweight KK8 ~4.4–4.8 kg; larger units significantly heavier)
• Design: oil-free piston compressors with compact OEM integration footprint