horsch Maestro RC Central Fill 1230, Owner'S Manual

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Maestro RC Owner’s Manual – Ver. 2.1 10/2019 105
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Bolt Tightening Torques – Imperial Bolts
Bolt tightening Torques - Imperial bolts (Ft. Lbs)
Bolt Diameter SAE Grade 2 SAE Grade 5 SAE Grade 8 L9
Size Thread Dry Lubed Dry Lubed Dry Lubed Lubed
1/4 20 66* 49* 8 75* 12 9 11
1/4 28 76* 56* 10 86* 14 10 13
5/16 18 11 8 17 13 20 18 21
5/16 24 12 9 19 14 25 20 23
3/8 16 20 15 30 23 45 30 33
3/8 24 23 17 35 25 50 35 38
7/16 14 30 24 50 35 70 55 60
7/16 20 35 25 55 40 80 60 65
1/2 13 50 35 75 55 110 80 95
1/2 20 55 40 90 65 120 90 105
9/16 12 65 50 110 80 150 110 140
9/16 18 75 55 120 90 170 130 150
5/8 11 90 70 150 110 220 170 185
5/8 18 100 80 180 130 240 180 205
3/4 10 160 120 260 200 380 280 290
3/4 16 180 140 300 220 420 320 355
7/8 9 190 140 400 300 600 460 505
7/8 14 210 155 440 320 660 500 585
1 8 220 160 580 440 900 680 775
1 14 240 170 640 480 1000 740 900
1 1/8 7 300 220 800 600 1280 960 1150
1 1/8 12 340 260 880 660 1440 1080 1325
1 1/4 7 420 320 1120 840 1820 1360 1600
1 1/4 12 460 360 1240 920 2000 1500 1750
1 3/8 6 560 420 1460 1100 2380 1780 --
1 3/8 12 640 460 1680 1260 2720 2040 --
1 1/2 6 740 560 1940 1460 3160 2360 3250
1 1/2 12 840 620 2200 1640 3560 2660 3650
NOTE: Items with (*) indicate torque in Inch/Pounds. All others in Foot/Pounds.