TYPE 30 5T2NL - Bare Air Compressor Block
The 5T2NL is an oil-free or non-lube machine, mainly for use in hospitals. Oil can only pass piston rings if the pressure is lower on top of the piston than underneath the piston. This normally happens when the piston sucks air into the cylinder on the downstroke.
The non-lube machines do have two pistons, running together. In between the two pistons, are always positive compressed air pressure. This air prevents any oil to pass the bottom piston rings and it is impossible for oil to get into the compressed air, delivered by this compressor.
Flywheel: 406mm X 2SPA
Motor needed: 5.5kW - 7.5kW (7.5 hp - 10 hp.)
Displacement at 660 rpm with 5.5 kW motor 744 liter/min
Displacement at 930 rpm with 7.5 kW motor 1050 liter/min.
Free air delivery at 660 rpm 510 liter/min and 762 l/min at 930 rpm
Number of pistons: 2
Low-pressure piston diameter: 127 mm and stroke 89mm
High-pressure piston diameter: 76.2 mm and stroke 89mm
Maximum pressure: 8.6 bar
Refrigerated air dryers from 750 liters/min up to 6500 liter/min ex-stock. Larger ex overseas. Dew point 4°C under pressure. Automatic drain pre and manual drain after filters.
Screw compressors have no valves or other mechanical forces to cause imbalances unlike piston compressors.
Airpower keeps universal spare parts for compressors. Pressure switches, non return valves and safety valves are universal to all compressors. Bottom entry filters/ regulators, electric motors and starters can be used for many makes of compressors.