Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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FOR MODELS: JGZ AND JGU SECTION 1 - DESIGN SPECIFICATIONS & DATA Nominal Bore Diameter - Inches or mm Stroke - Inches or mm Maximum Allowable Working Pressure (Maximum Relief Valve Setting) - PSIG - Pounds per Square Inch Gauge or bar g Piston End Clearance - Inches or mm CYLINDER INFORMATION PLATE: Head End Minimum Volumetric Clearance Cylinder Serial Number - Percentage HEAD-END VARIABLE VOLUME CLEARANCE POCKET (VVCP) INFOMATION PLATE Variable Volume Clearance Pocket Serial Number Base Volume Cubic Inches or cm3 with VVCP Closed VVCP S.N. BASE VOL. VVCP MAWP VVCP Maximum Allowable Working Pressure (Maximum Relief Valve Setting) PSIG - Pounds per Square Inch Gauge or bar g ARIEL CORPORATION FIGURE 1-8 CYLINDER AND VVCP PLATES PAGE 1 - 12 7/09 A-0755 CYL. BORE VARIABLE VOL. TOTAL TRAV. OR TURNS Total Travel in Inches or cm Total Travel in Number of Turns Class (cylinder model) Rated Revolutions per Minute (of crankshaft) Crank End Nominal Cylinder Bore Diameter Inches or mm Variable Volume Cubic Inches or cm 3 HEAD-END VARIABLE VOLUME CLEARANCE POCKET (VVCP) INSTRUCTION PLATE Fully Closed Dimension A Inches or cm Remove Aluminum Thread Protector Where Applicable Fully Open Dimension A Inches or cm Variable Volume Clearance Pocket Serial Number
FOR MODELS: JGZ AND JGU SECTION 1 - DESIGN SPECIFICATIONS & DATA Clearances TABLE 1-4 CLEARANCES DESCRIPTION CLEARANCE, INCHES CLEARANCE, (mm) Crankshaft Dust Seal (Feeler Gauge - Centered) 0.010 to 0.014 (0.25 to 0.35) Crankshaft Thrust (End) 0.015 to 0.030 (0.38 to 0.76) Crankshaft Journal Bearing (Jack) 0.0055 to 0.009 (0.14 to 0.23) Crankshaft Pin to Connecting Rod Bearing (Vertical Jack) 0.0055 to 0.009 (0.14 to 0.23) Connecting Rod Thrust (Side) 0.0115 to 0.0275 (0.29 to 0.70) Connecting Rod Bushing to Crosshead Pin 0.002 to 0.005 (0.05 to 0.13) Crosshead Bushing to Crosshead Pin - Iron Crosshead 0.002 to 0.005 (0.05 to 0.13) Crosshead to Crosshead Pin - Bronze Crosshead 0.002 to 0.004 (0.05 to 0.10) Crosshead to Guide - Babbitted Iron (Feeler Gauge a ) 0.011 to 0.017 b (0.28 to 0.43) Crosshead to Guide - Babbitted Bronze (Feeler Gauge 1 ) 0.015 to 0.021 (0.38 to 0.53) a. Crosshead guide to crosshead clearance at the top is to be checked by inserting a standard 0.5 inches (13 mm) wide feeler stock from one side edge of the crosshead across to the opposite side. This is to be done at both ends. The bottom clearance is to be checked with 0.0015 inches (0.04 mm) feeler stock at the four corners. If the feeler can be inserted more that 0.5 inches (13 mm), the assembly is not acceptable. b. With D-4958, D-4959 or D-4960 crosshead, starting 3/07; with older D-3486, D-3513, D-3796 or D-4120 crossheads, clearance is 0.009 to 0.015 in. (0.23 to 0.38 mm). Table 1-5 PISTON END CLEARANCES a CYLINDER CLASS CRANK END HEAD END TOTAL b IN. (mm) IN. (mm) IN. (mm) 17-7/8, 20-1/8, 22, 24-1/8 & 26-1/2 Z:U 0.060 (1.5) 0.105 to 0.165 (2.7 to 4.2) 0.165 to 0.225 (4.2 to 5.7) All ZL:UL:ZN:UN 0.300 (7.2) NO SET 0.635 to 0.695 (16.1 to 17.7) All ZM:UM 0.045 (1.1) 0.090 to 0.150 (2.3 to 3.8) 0.135 to 0.195 (3.4 to 4.9) All Other Z:U 0.045 (1.1) 0.090 to 0.150 (2.3 to 3.8) 0.135 to 0.195 (3.4 to 4.9) a. See “Piston and Rod - Installation” on page 5-40 for setting instructions. b. If your total piston end clearance is not within table tolerance, contact your Packager or <strong>Ariel</strong>. NOTE: MEASURED CLEARANCES WILL NOT NECESSARILY AGREE BECAUSE OF OIL FILMS, ASSEMBLY TOLERANCES, WEAR, ETC. PLASTIGAGES, SOLDER, ETC. ARE NOT TO BE USED. 7/09 PAGE 1 - 13
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Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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