Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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FOR MODELS: JGZ AND JGU SECTION 1 - DESIGN SPECIFICATIONS & DATA TABLE 1-10 PISTON, PISTON RING & WEARBAND CLEARANCES - NON-PRC, (mm) PISTON TO CYLINDER CLEARANCE BORE (mm) INCHES (454) 17.875 (4.60 to 4.90) (4.55 to 5.46) (16.38) (14.53) (19.33) (1.12 to 1.45) (498) 19.625 (4.75 to 5.05) (5.99 to 6.81) (20.42) (15.95) (21.21) (1.27 to 1.60) (511) 20.125 (4.70 to 5.00) (6.15 to 6.96) (20.88) (16.36) (21.77) (1.27 to 1.60) (559) 22 (5.41 to 5.72) (6.71 to 7.72) (23.16) (17.88) (23.77) (1.50 to 1.83) (613) 24.125 (5.44 to 5.74) (7.36 to 8.38) (25.15) (19.61) (26.09) (1.42 to 1.75) (673) 26.5 (5.74 to 6.05) (8.13 to 9.14) (27.43) (21.54) (28.65) (1.47 to 1.80) a. For PEEK piston ring end gap values, multiply the table values by 0.3. Fastener Tightening Torque Listed in the following tables are fastener tightening torque values, required for proper assembly of an Ariel JGZ/JGU compressor. Refer to the section concerning a subject component for detailed assembly procedures. Threads are to be clean and free of burrs. Torque values are based on the use of petroleum type lubricants on the fastener threads and seating surfaces. Use lubricating oil or Lubriplate 630, except for main bearing-cap cap screws, compressor piston rod nuts, crosshead-balance lock nuts and crosshead threads, stainless steel fasteners and fasteners in forged steel cylinders which use “Never-Seez”, Regular Grade (by Bostik, www.bostik-us.com, do not substitute for this product), and except where Loctite is specified. Molybdenum disulfide lubricants and “Never-Seez” are not otherwise to be used for fastener lubrication, unless specified, or excessive stresses can result with the listed values. TABLE 1-11 FASTENER TIGHTENING VALUES FASTENER NOMINAL SIZE INCH – TPI TYPE TORQUE, LB X FT (N·m) Main Bearing-Cap - Cap Screw 1-3/8 – 6 12 Point - Grade 8 350 (475) + 60° Turn a Connecting Rod-Caps - Cap Screw 1-3/8 – 12 12 Point - Grade 8 Torsional Vibration Detuner-Donut Cap Screw Crosshead Pin through Cap Screw - Lock Nut PISTON RING END GAPS - FILLED TEFLON a CLEARANCE NEW MAXIMUM WEAR BANDS NEW MINIMUM END GAP 45° 70° RADIAL PROJECTION 350 (475) + 110° Turn b 1-1/8 – 12 12 Point - Grade 8 740 (1010) 5/8 – 18 Hex - Prevailing 125 (169) PAGE 1 - 18 7/09
FOR MODELS: JGZ AND JGU SECTION 1 - DESIGN SPECIFICATIONS & DATA TABLE 1-11 FASTENER TIGHTENING VALUES FASTENER Crosshead Guide to Frame/to Spacer Bar/Frame to Spacer Bar - Cap Screw Crosshead Guide to Cylinder; Crosshead Guide to Extension Piece - Cap Screw Crosshead Guide to Support - Cap Screw Head End Cylinder Support to Cylinder Eccentric Vernier-Cap - Cap Screw Idler Sprocket Through Cap Screw - Lock Nut Sprocket Adapter/Flywheel to Crankshaft - Cap Screw NOMINAL SIZE INCH – TPI 1-1/8 – 12 685 (930) 1-1/8 – 7 12 Point - Grade 8 595 (805) 7/8 – 9 12 Point - Grade 8 280 (380) 7/8 – 14 Hex Stud - Nut 315 (427) 1-1/4 – 7 Hex - Grade 8 or 9 770 (1044) 1/2 – 13 44 (60) 5/8 – 11 Hex - Grade 8 88 (120) 7/8 – 9 255 (345) 3/8 – 16 5/16 – 18 TYPE TORQUE, LB X FT (N·m) Hex - Grade 8 Hand Wrench Tight 5/8 – 18 Hex - Prevailing 82 (110) 3/4 – 16 Hex - Grade 9 215 (290) Rod Packing - Cap Screw 3/4 – 10 1 – 14 1-1/4 – 12 12 Point - Grade 8 or 17-4PH 125 (170) 350 (475) 700 (940) Rod Catcher to Packing 5/8 – 18 12Pt-Gr8/17-4PH 105 (140) Piston Nut 2-1/4 – 12 Ariel Design Note c Crosshead-Balance Nut 2-5/8 – 8 Ariel Design Note d Lifting Bracket to Frame 1-3/4 – 8 12 Point - Grade 8 2120 (2870) Rupture Disk - Blow-Out Fitting Cap 1/4 Nom. Tube Hex - Tube Fitting 40 lb x in. (4.5) Fenner Drive at FF Lube Sprocket -- Hex 200 lb x in. (23) Cylinder Mounting Flange to Forged 1 – 14 12 Point - Grade 8 485 (655) Steel Cylinder 1-1/4 – 12 or 17-4PH 955 (1290) Hold Down - Stud Nut 1-3/4 – 5 Hex Stud - Nut 2300 e (3100) 7/09 PAGE 1 - 19
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Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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