Hold-down Bolting to Resist Shaking Forces and ... - Ariel Corporation

ENGINEERING REFERENCEThe contents of this document are proprietary and confidential. They are theproperty of Ariel Corporation and may not be disclosed, reproduced, or used formanufacture in part or in whole without written permission from Ariel Corporation.TABLE 1 Hold-down Bolting - Minimum Torques aCompressorModelHole Diameterinch (mm)Frame FootRecommendedStud Sizeinch--TPIMinimum NutTorque clb-ft (N•m)Crosshead Guide to Support bBolting Sizeinch--TPIBolting Torquelb-ft (N•m)JGI 7/8 (22) 3/4--10 175 (235) --- ---JGM:N:P:Q 3/4 (19) 5/8--11 100 (130) 5/8--11 90 (120)JG:A 7/8 (22) 3/4--10 175 (235) 5/8--11 90 (120)ACF d , JGR:J 1 (25) 7/8--9 280 (380) 3/4--10 160 (215)JGW 1 (25) 7/8--9 280 (380) 5/8--11 90 (120)JGH:E 1-1/4 (32) 1-1/8--7 600 (805) 7/8--9 255 (345)JGK:T e 1-1/4 (32) 1-1/8--7 600 (805) 1--8 380 (515)JGC:D:F 1-1/2 (48) 1-3/8--6 1100 (1500) 1-1/4--7 765 (1040)JGZ:U 1-7/8 (48) 1-3/4--5 2300 (3100) 1-1/4--7 765 (1040)KBZ:U 1-7/8 (48) 1-3/4--5 2300 (3100) 1-1/4--12 780 (1055)JGB:V, KBB:V 1-7/8 (48) 1-3/4--5 2300 (3100) 1-1/2--6 1340 (1815)a. See #1, "Requirements".b. Not applicable to directly-opposed compressors.c. When using a stud pitch other than those listed above in the same nominal diameter size, use this formula to determinerequired torque: Torque = (TABLE 1 fastener torque) x (target fastener root area ÷ TABLE 1 fastener rootarea).d. For directly-opposed compressors, use frame foot values.e. For JGT compressors with ET crosshead guides, use the 7/8”–9 TPI bolting size in TABLE 1 as a minimum torque tobolt the crosshead guide to the support.TABLE 2 Crosshead Guide Support Foot Hold-down Bolting - Minimum Torques aCompressor ModelJGM:N:P:Q:IHole Diameterinch (mm)Recommended StudSize, inch--TPIN/AMinimum Nut Torque b lbft(N•m)JG:A 3/4 (19) 5/8--11 100 (130)JGR:J:W 1 (25) 7/8--9 280 (380)JGH:EK:T 1-1/4 (32) 1-1/8--7 600 (805)JGC:D:F:Z:U 1-1/2 (38) 1-3/8--6 1100 (1500)JGB:V, KBB:V:Z:U 1-7/8 (48) 1-3/4--5 2300 (3100)a. See #1, "Requirements".b. When using a stud pitch other than those listed above in the same nominal diameter size, use this formula to determinerequired torque: Torque = (TABLE 2 fastener torque) x (target fastener root area ÷ TABLE 2 fastener rootarea).Page 2 of 2 REV 15 ER-26