Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
Heavy Duty Balanced Opposed Compressors - Ariel Corporation
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For Models: JGH:E:K:T Appendix A <strong>Ariel</strong> Fasteners and Torques<br />
TABLE A-3 JGH:E:K:T Fastener Torques<br />
Fastener<br />
Cylinder Mounting Flange to Forged Steel 1” - 14 12 Point<br />
485 (655)<br />
Cylinder<br />
1-1/4-12 Grade 8 or 17-4PH 955 (1290)<br />
Hold Down 1-1/8 - 7 Hex Nut 600 (805) c<br />
Main Drive Coupling - Adapter to Crankshaft<br />
Flange<br />
1” - 14 12 Point - Grade 8 440 (600)<br />
Lifting Bracket to Frame JGE:K:T/6 1-1/4 - 7 12 Point - Grade 8 690 (938)<br />
Fenner Drive --- Hex 100 (135)<br />
Cap Screw d<br />
1/2 - 13<br />
40 (54)<br />
•Valve Cap<br />
•Cylinder Head<br />
5/8 -11<br />
3/4 - 10<br />
3/4 - 16 Hex - Grade 8 or 9<br />
79 (105)<br />
140 (190)<br />
160 (215)<br />
•Gas Passage<br />
•Unloader<br />
•VVCP<br />
7/8 - 9<br />
7/8 -14<br />
or<br />
12 Point -<br />
Grade 8 or 17-4PH<br />
230 (310)<br />
260 (355)<br />
•<strong>Ariel</strong> supplied companion flanges,<br />
except “Peanut” Dual Nozzle<br />
1” - 8<br />
1” - 14<br />
345 (470)<br />
395 (535)<br />
1-1/8 - 12 560 (760)<br />
Unloader Actuator to Valve Cap - Cap Screw Hex - Grade 8 55 (75)<br />
“Peanut” Dual Nozzle Companion Flanges 1/2-13<br />
Tandem Cylinder to Cylinder - Cap Screw d<br />
Seating Studs in Cylinder<br />
Nominal Size<br />
Inch - TPI<br />
12 Point<br />
Grade 8 or 17-4PH<br />
53 (71)<br />
1/2 - 13<br />
Hex - Gr.ade 8 or 9<br />
44 (60)<br />
5/8 - 11 or<br />
88 (120)<br />
3/4 - 10 12 Point<br />
160 (215)<br />
3/4 - 16<br />
Grade 8 or 17-4PH<br />
180 (245)<br />
1/2 - 13<br />
22 (30)<br />
5/8 - 11 44 (60)<br />
3/4 - 10 79 (105)<br />
3/4 - 16 Dog Point<br />
90 (120)<br />
7/8 - 9 130 (170)<br />
7/8 - 14 145 (195)<br />
1” and larger 200 (270)<br />
Packing Tie Rod - Nut<br />
#10 - 24<br />
1/4 - 20<br />
Hex<br />
20 lb x in. (2.3)<br />
72 lb x in. (8.1)<br />
Distribution Block Tie Rod - Nut 1/4 - 28 Hex 68 lb x in. (7.7)<br />
Distribution Block Divider Valve - Cap Screw 1/4 - 28 Socket Head 75 lb x in. (8.5)<br />
Grade 5 - Hex Cap Screw ALL Hex - Grade 5 Hand Wrench Tight<br />
a. Or use 50 (68) torque at 3500 psig (241 bar g) hydraulic pressure with separately purchased piston nut torquing tool.<br />
Tighten, loosen, then re-tighten piston nut to insure proper torque.<br />
b. Or use 3500 psig (241 bar g) hydraulic pressure on separately purchased crosshead (balance) nut torquing tool.<br />
c. Minimum torque for recommended 1-1/8 - 7 hold down stud size to provide 55,000 psi (380 MPa) stress in a stud with<br />
an ultimate strength of 100,000 psi (690 MPa) or greater. If greater, increase torque to stress the stud to about 55% of<br />
the ultimate strength of the stud material, as specified by packager.<br />
d. For studs specified for cylinder applications, tighten nuts to the same torque as cap screws in similar applications.<br />
3/11 PAGE A-5<br />
Type<br />
Torque<br />
LB x FT (N·m), unless<br />
specified
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