Torque Settings - jcb 3CX Service Manual

Section 1
2 - 1

Torque Settings

Use only where no torque setting is specified in the text. Values are for dry threads and may be within three per cent of the
figures stated. For lubricated threads the values should be REDUCED by one third.
UNF Grade 'S' Bolts
Bolt Size
in (mm)
1/4 (6.3)
5/16 (7.9)
3/8 (9.5)
7/16 (11.1)
1/2 (12.7)
9/16 (14.3)
5/8 (15.9)
3/4 (19.0)
7/8 (22.2)
1 (25.4)
11/4 (31.7)
11/2 (38.1)
Metric Grade 8.8 Bolts
Bolt Size
(mm)
M5 (5)
M6 (6)
M8 (8)
M10 (10)
M12 (12)
M16 (16)
M20 (20)
M24 (24)
M30 (30)
M36 (36)
Rivet Nut Bolts/Screws
Bolt Size
(mm)
M3 (3)
M4 (4)
M5 (5)
M6 (6)
M8 (8)
M10 (10)
M12 (12)
Note: All bolts used on JCB machines are high tensile and must not be replaced by bolts of a lesser tensile specification.
9803/3280
General Information
Hexagon (A/F)
in
7/16
1/2
9/16
5/8
3/4
13/16
15/16
11/8
15/16
11/2
17/8
21/4
Hexagon (A/F)
mm
8
10
13
17
19
24
30
36
46
55
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Torque Settings
Nm kgf m
14 1.4
28 2.8
49 5.0
78 8.0
117 12.0
170 17.3
238 24.3
407 41.5
650 66.3
970 99.0
1940 198.0
3390 345.0
Torque Settings
Nm kgf m
7 0.7
12 1.2
28 3.0
56 5.7
98 10
244 25
476 48
822 84
1633 166
2854 291
Torque Settings (for steel rivet nuts)
Nm kgf m
1.2 0.12
3.0 0.3
6.0 0.6
10.0 1.0
24.0 2.5
48.0 4.9
82.0 8.4
Section 1
2 - 1
lbf ft
10
20
36
58
87
125
175
300
480
715
1430
2500
lbf ft
5
9
21
42
72
180
352
607
1205
2105
lbf ft
0.9
2.0
4.5
7.5
18.0
35.5
60.5
Issue 1