Heavy Duty Balanced Opposed Compressors - Ariel Corporation

FOR MODELS: JGZ AND JGU SECTION 4 LUBRICATION
cycle time (67% max.) to increase lube rate. Break-in rate should be maintained for 200 hours
of operation for new equipment, or when replacing packing and/or piston rings.
Lube Rate and Speed - The recommended lube rates for break-in or normal operation, in seconds
per cycle (as stamped on the lubricator box information plate and in Lube sheets), are
calculated at Frame Rated Speed (RPM), as stamped on the frame data plate, or the cylinder
rated (RPM), stamped on the cylinder data plate, whichever is lower. The lube rate is to be reduced
with speed, (as compressor actual running speed is reduced, cycle time is to be increased
to reduce lube rate):
(RPM max ÷ RPM actual ) x cycle time seconds from lube plate = cycle time seconds, at actual
running speed.
Or reference the “Lubrication sheets” in the Ariel "Parts Book" for the Cycle Time (seconds) vs.
RPM (compressor speed) Table at various running speeds for your compressor, at the stated
gas operating conditions and lubricant.
Special Lubricant Certification - Special lubricant formulations are available from lubricant
suppliers for specific applications. Suppliers who will certify suitability of the formulation for site
conditions should provide appropriate documentation. Contact Ariel for verification of warranty
coverage.
Calculation Example, recommended daily lube rate:
JGJ/2, with Pipeline Quality Natural Gas, and following cylinder bore diameters (actual bore
diameter as shown on cylinder data plate), and 1.5 inches (38.1 mm) diameter piston rod, with
mineral oil type lubricant:
13.00"J (330 mm) at 100 psi discharge pressure (6.89 bar). Table 4-6, factor = 1
9.75"J-CE (248 mm) at 577 psi discharge pressure (39.8 bar), Crank End. Factor = 1
5.125"J-HE (130 mm) at 1636 psi discharge pressure (112.8 bar), Head End. Factor = 1.25
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