Sperre Classic
Technical data
Overview
The Sperre Classic is the world’s most renowned maritime compressor. It has been perfected in demanding working conditions over decades. No wonder it is the most frequently chosen compressor on the world’s oceans.
Benefits
- Model HLF2/77 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.
Performance
Specification
50 Hz (30 bar)
60 Hz (30 bar)
Speed (RPM)
1450
1750
Charging capacity (m³/h)*
11
13
Power requirement (kW)
2,8
3,1
Heat dissipation (kCal/h)
2129
2399
*Charging capacity is from ambient pressure to final pressure. Tolerance +/-5%.
Design
Specification
No. of cylinders
2
Cylinder arrangement
90° V
No. of compression stages
2
Cooling
Air
Valve LP
Reed valve
Valve HP
Concentric plate valve
Dimensions & weight
Specification
Cylinder diameter LP
77 mm
Cylinder diameter HP
50 mm
Stroke
40 mm
Weight (compressor/el.motor)
120 kg
Lubrication
Specification
Sump capacity
1.8 litres
Lubrication system
Splash
Operating parameters
Specification
Maximum delivery pressure
35 bar
Ambient temperature
45°C
Normal working pressure LP
2–4 bar
Normal temperature outlet air
Approx. 25°C above ambient
Maximum speed
1800 RPM
Set point thermo switch air alarm/stop
75°C/80°C
Rotation
Anti-clockwise (looking at the drive end)
Safety valves set point
10% above stage pressure
Max. noise level
81 dBA