Non-Lube Compressor Cylinders

Please refer all non-lube applications to the Ariel Application Engineering Department.

Non lube applications will be limited to the following compressor frame and cylinder classes:

Frames – JGA, JGJ, JGK, JGT, JGD, JGU and KBB

Cylinders - JG, RJ, JGK, JGT, JGD, JGU and KBB

Non-lube applications will require that the following application guidelines be strictly adhered to:

• Use a long two compartment distance piece (API – 618 Fourth edition Type C) with oil slingers in both compartments;
• Piston rod materials for non lube service will be as follows:
• For non-corrosive applications – ETD 150 with a Tungsten Carbide coating.
• For corrosive applications – 17-4 PH Stainless Steel with a Tungsten Carbide coating.
• Limit cylinder internal discharge temperature to 300°F (149°C)
• Limit cylinder discharge pressure to 1500 psig (103 barG)
• All non lube cylinders must be equipped with water cooled packing.
• Compressor valves, pistons (and piston trim) are specifically designed for non-lube service.

Rubbing speed is a factor that must be considered for all Non-Lube applications.  The piston speed limit for Non-Lube applications is 750 feet per minute (3.81 meters per second).  The following table defines the maximum rotating speed allowed for each compressor frame model, when used in non lube service.

Ariel Corporation Application Manual  
2 November 2006