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