Heavy Duty Balanced Opposed Compressors

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FOR MODELS: JG AND JGA SECTION 1 - DESIGN SPECIFICATIONS & DATA TABLE 1-13: PISTON TO BORE CLEARANCE AND PISTON/RIDER RING END GAP (ANGULAR-CUT), INCHES (mm) - LUBRICATED JG CLASS CYLINDERS BORE DIAMETER a PISTON TO BORE CLEARANCE PISTON/RIDER RING END GAP NEW MAXIMUM 2.25 (57) 0.090 to 0.096 (2.29 to 2.44) 0.023 to 0.039 (0.58 to 0.99 0.156 (3.96) 2.5 (64) 0.090 to 0.096 (2.29 to 2.44) 0.030 to 0.046 (0.76 to 1.17) 0.184 (4.67) 2.75 (70) 0.090 to 0.096 (2.29 to 2.44) 0.044 to 0.060 (1.12 to 1.52) 0.240 (6.10) 3 (76) 0.090 to 0.096 (2.29 to 2.44) 0.044 to 0.060 (1.12 to 1.52) 0.240 (6.10) 3.375 (86) 0.090 to 0.096 (2.29 to 2.44) 0.044 to 0.060 (1.12 to 1.52) 0.240 (6.10) 3.625 (92) 0.090 to 0.096 (2.29 to 2.44) 0.044 to 0.060 (1.12 to 1.52) 0.240 (6.10) 3.875 (98) 0.090 to 0.096 (2.29 to 2.44) 0.051 to 0.067 (1.30 to 1.70) 0.268 (6.81) 4.125 (105) 0.090 to 0.096 (2.29 to 2.44) 0.055 to 0.071) (1.40 to 1.80) 0.284 (7.21) 4.75 (121) 0.090 to 0.096 (2.29 to 2.44) 0.057 to 0.073 (1.45 to 1.85) 0.292 (7.42) 5.125 (130) 0.090 to 0.096 (2.29 to 2.44) 0.062 to 0.078 (1.57 to 1.98) 0.312 (7.93) 6.125 (156) 0.090 to 0.096 (2.29 to 2.44) 0.069 to 0.099 (1.75 to 2.51) 0.396 (10.1) 6.5 (165) 0.090 to 0.096 (2.29 to 2.44) 0.074 to 0.104 (1.88 to 2.64) 0.416 (10.6) 7.125 (181) 0.090 to 0.096 (2.29 to 2.44) 0.083 to 0.113 (2.11 to 2.87) 0.452 (11.5) 7.5 (191) 0.090 to 0.096 (2.29 to 2.44) 0.088 to 0.118 (2.24 to 3.00) 0.472 (12.0) 8.5 (216) 0.090 to 0.096 (2.29 to 2.44) 0.114 to 0.144 (2.90 to 3.66) 0.576 (14.6) 8.875 (225) 0.090 to 0.096 (2.29 to 2.44) 0.120 to 0.150 (3.05 to 3.81) 0.600 (15.2) 10.5 (267) 0.090 to 0.096 (2.29 to 2.44) 0.144 to 0.174 (3.66 to 4.42) 0.696 (17.7) 11 (279) 0.090 to 0.096 (2.29 to 2.44) 0.152 to 0.182 (3.86 to 4.62) 0.728 (18.5) 13 (330) 0.090 to 0.096 (2.29 to 2.44) 0.182 to 0.212 (4.62 to 5.38) 0.848 (21.5) 13.5 (343) 0.090 to 0.096 (2.29 to 2.44) 0.190 to 0.220 (4.83 to 5.59) 0.880 (22.4) a. Conventional piston rings are standard for JG Class Cylinders, except 2-1/2JG-FS-HE Class cylinders with bore diameters of 2.25” (57mm) & 2.5” (64); 3JG-CE, 2.75” (70) & 3” (76); 3-5/8JG-CE, 3.375” (86) & 3.625” (92); and 13-12JG, 13” (330) & 13.5” (343), which use piston/rider rings. Piston/rider rings are optional for other lubricated JG Cylinders, except for the 1-3/4JG-FS-HE class, which uses conventional type seal-joint rings and wear band. PAGE 1 - 14 11/01
FOR MODELS: JG AND JGA SECTION 1 - DESIGN SPECIFICATIONS & DATA Table 1-14: PISTON TO BORE CLEARANCE AND PISTON/RIDER RING END GAP (SEAL-JOINT a ), INCHES (mm) - LUBRICATED JG CLASS CYLINDERS BORE DIAMETER PISTON TO BORE CLEARANCE a. Seal-Joint piston rings are standard for JG Class high-pressure Tandem Cylinders. See Figure 5-12: on page 5-23 Fastener Tightening Torque Listed in the following tables are fastener tightening torque values required for proper assembly of Ariel JG and JGA compressors. Refer to the section concerning a subject component for detailed assembly procedures. Threads must be clean and free of burrs. PISTON/RIDER RING END GAP NEW MAXIMUM 2.75 (70) 0.090 to 0.096 (2.29 to 2.44) 0.047 to 0.059 (1.19 to 1.50) 0.177 (4.50) 3 (76) 0.090 to 0.096 (2.29 to 2.44) 0.051 to 0.063 (1.30 to 1.60) 0.189 (4.80) Torque values are based on the use of petroleum type lubricants on both the threads and seating surfaces. Use lubricating oil or Lubriplate 630, except for compressor rods-piston end, piston nuts and crosshead nuts use Never-Seez (by Bostik, Boston St., Middleton, MA 01949, phone: 508-777-0100). 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 1-15: FASTENER TIGHTENING VALUES (for latest available information see ER-63 at www.arielcorp.com) FASTENER NOMINAL SIZE, INCH - TPI TYPE TORQUE, LB X FT (N·m) Main Bearing Cap - Cap Screw 1/2 - 13 12 Point - Grade 8 58 (79) Connecting Rod Cap - Cap Screw 1/2 - 20 12 Point - Grade 8 67 (91) Crosshead Pin Thru Bolt - Lock Nut 3/8 - 24 Hex - Prevailing 25 (34) Spacer Bar - Cap Screw 5/8 - 18 Hex Grade 9 92 (125) Crosshead Guide to Frame 1/2 - 13 12 Point 48 (65) Distance Piece to Crosshead Guide - Cap Screw 12 - 13 12 Point 57 (77) Distance Piece to Crosshead Guide (11JG) - Cap Screw 3/8 - 16 Socket Head 18 (24) Crosshead Guide to Cylinder - Cap Screw 1/2 - 13 12 Point 48 (65) Eccentric Vernier Cap - Cap Screw 5/16 - 18 Hex - Grade 8 Hand Wrench Tight Idler Sprocket Thru Bolt - Lock Nut 1/2 - 20 Hex - Prevailing 41 (55) Rod Packing - Cap Screw 1/2 - 13 12 Point - Grade 8 35 (48) Piston Nut 7/8 - 12 Ariel Design 222 (300) Crosshead-Balance Nut 1 - 12 Ariel Design 255 (345) 11/01 PAGE 1 - 15
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Heavy Duty Balanced Opposed Compressors

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