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Sperre HL2/77 air compressor



Sperre HL2 77 start air compressor

Sperre HL2/77 air compressor

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Data sheet

Serial number77279
kW5,1 @ 50 Hz / 5,9 @ 60 Hz
RPM965 @ 50 Hz - 1160 @ 60 Hz
Volt220-380/440 - see photo electro motor plate
HZ50 / 60
ClassLloyds Register
m³ /h, cubic meter per hour capacity20
Electric motor typeSIEMENS - see photo electro motor plate
Working pressure BAR30
Test Pressure BAR45

More info

Sperre HL2 77 start air compressor

Model HL2/77 is a two stage 90º V-compressor.

Cylinders and compressed air coolers are air-cooled.

Bearings and cylinders walls are splash lubricated. The compressor and motor are normally supplied mounted together and connected by means of a heavy-duty flexible coupling.

Both electrical and diesel engine driven versions are available.

Technical Data
Performance50 Hz (30 bar)60 Hz (30 bar)
Speed (RPM)975145011751750
Charging capacity (m³/h)*18262132
Power requirement (kW)4,66,85,18,6
Heat dissipation (kCal/h)3561526339476656
*Charging capacity is from ambient pressure to final pressure. Tolerance +/-5%.
No. of cylinders2
Cylinder arrangement90° V
No. of compression stages2
Valve LPReed valve
Valve HPConcentric plate valve
Dimensions & weight
Cylinder diameter LP77 mm
Cylinder diameter HP50 mm
Stroke80 mm
Weight (compressor/el.motor)246 kg
Oil typeSynthetic oil (see approved list)
Sump capacity4 litres
Lubrication systemSplash
Operating parameters
Maximum delivery pressure40 bar
Ambient temperature45°C
Normal working pressure LP2–4 bar
Normal temperature outlet air15°C–30°C above ambient temperature
Maximum speed1800 RPM
Set point thermo switch air alarm/stop75°C/80°C
RotationAnti-clockwise (looking at the drive end)
Safety valves set point5–10% above stage pressure
Max. noise level84 dBA
Max. vibration level40 mm/s-RMS