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Bolt Torque Settings

This article isn't about excavator final drive removal, or even final drive disassembly. This is just a simple reminder about correct bolt torque settings when you come to re-assemble a final drive unit.

If you don't have a metric torque wrench then buy one! This prevents the expensive mistakes that arise from using charts to calculate torque specifications for bolts.

kN = Axial Load in kiloNewtons   Nm = Torque Setting in Newton Metres

Bolt Spec.

4.8 5.8 8.8 10.9 12.9

Dia x Pitch mm

kN Nm kN Nm kN Nm kN Nm kN Nm
3 x 0.5 1.2 0.9 1.5 1.1 2.3 1.8 3.4 2.6 4.0 3.0
4 x 0.7 2.1 1.6 2.7 2.0 4.1 3.1 6.0 4.5 7.0 5.3
5 x 0.8 3.5 3.2 4.4 4.0 6.7 6.1 9.8 8.9 11.5 10.4
6 x 1 4.9 5.5 6.1 6.8 9.4 10.4 13.8 15.3 16.1 17.9
7 x 1 7.3 9.3 9.0 11.5 13.7 17.2 20.2 25 23.6 30
8 x 1 9.9 14.5 12.2 18.0 18.9 27 28 40 32 47
9 x 1.25 9.3 13.6 11.5 16.8 17.2 25 25 37 30 44
10 x 1.25 15.8 28.0 19.5 35 30 53 43 78 51 91
10 x 1.5 14.5 26.6 18 33 27 50 40 73 47 86
12 x 1.25 23.8 50 29 62 45 95 65 139 77 163
12 x 1.75 21.3 46 26 56 40 86 50 127 69 148
14 x 1.5 32 79 40 96 61 150 90 220 105 257
14 x 2 29 73 36 90 55 137 80 201 94 135
16 x 1.5 43 121 54 150 82 229 121 336 141 393
16 x 2 40 113 50 141 76 214 111 314 130 369
18 x 1.5 57 178 70 220 110 345 157 491 184 575
18 x 2.5 49 157 60 194 95 306 135 435 158 509
20 x 1.5 72 248 89 307 140 482 199 687 233 804
20 x 2.5 63 222 77 275 122 432 173 615 203 719
22 x 1.5 88 337 109 416 172 654 245 932 266 1090
22 x 2.5 78 305 97 376 152 502 216 843 253 987
24 x 2 101 420 125 519 196 814 280 1160 237 1360
24 x 3 90 383 112 474 175 744 250 1080 292 1240
27 x 2 131 615 162 760 225 1200 363 1700 425 1990
27 x 3 119 568 147 703 230 1100 328 1570 384 1840
30 x 2 165 850 204 1060 321 1670 457 2370 535 2380
30 x 3.5 144 772 178 995 280 1500 300 2130 467 2500