Tightening Torques; General Use Screws, Bolts And Nuts (For Front Loader And Backhoe); Stud Bolts - Kubota BX1860 Workshop Manual

BX1860, BX2360, BX2660, RCK48(P)-18BX, RCK54(P)-23BX, RCK60B-23BX, LA203, LA243, WSM

4. TIGHTENING TORQUES

[1] GENERAL USE SCREWS, BOLTS AND NUTS (FOR FRONT LOADER
AND BACKHOE)
Screws, bolts, and nuts whose tightening torques are not specified in this Workshop Manual should be
tightened according to the table below.
Indication on top of
bolt
Material of opponent
Ordinariness
part
Unit
N·m
Diameter
7.9
M6
to
(6 mm, 0.24 in.)
9.3
18
M8
to
(8 mm, 0.31 in.)
20
40
M10
to
(10 mm, 0.39 in.)
45
63
M12
to
(12 mm, 0.47 in.)
72
108
M14
to
(14 mm, 0.55 in.)
125
167
M16
to
(16 mm, 0.63 in.)
191
246
M18
to
(18 mm, 0.71 in.)
284
334
M20
to
(20 mm, 0.79 in.)
392

[2] STUD BOLTS

Material of opponent
Ordinariness
part
Unit
N·m
Diameter
12
M8
to
(8 mm, 0.31 in.)
15
25
M10
to
(10 mm, 0.39 in.)
31
29.5
M12
to
(12 mm, 0.47 in.)
49.0
62
M14
to
(14 mm, 0.55 in.)
73
98.1
M16
to
(16 mm, 0.63 in.)
112
172
M18
to
(18 mm, 0.71 in.)
201
No-grade or 4T
Aluminum
kgf·m lbf·ft N·m kgf·m
0.80 5.8 7.9 0.80
to to to to
0.95 6.8 8.8 0.90
1.8 13 17 1.7
to to to to
2.1 15 19 2.0
4.0 29 32 3.2
to to to to
4.6 33 34 3.5
6.4 47
to to – –
7.4 53
11.0 79.6
to to – –
92.5
12.8
17.0 123
to to – –
19.5 141
25.0 181
to to – –
29.0 209
34.0 246
to to – –
40.0 289
Aluminum
kgf·m lbf·ft N·m kgf·m
1.2 8.7 8.9 0.9
to to to to
1.6 11 11 1.2
2.5 18 20 2.0
to to to to
3.2 23 25 2.6
3.0 21.7
to to 31.4 3.2
5.0 36.1
6.3 46
to to – –
7.5 54
10.0 72.4
to to – –
11.5 83.1
17.5 127
to to – –
20.5 148
7T or Property class 8.8
Ordinariness
lbf·ft N·m kgf·m lbf·ft
5.8 9.81 1.00 7.24
to to to to
6.5 11.2 1.15 8.31
13 24 2.4 18
to to to to
14 27 2.8 20
24 48 4.9 36
to to to to
25 55 5.7 41
78 7.9 58
– to to to
90 9.2 66
124 12.6 91.2
– to to to
147
15.0 108
197 20.0 145
– to to to
225 23.0 166
275 28.0 203
– to to to
318 32.5 235
368 37.5 272
– to to to
431 44.0 318
lbf·ft
6.5
to
8.6
15
to
18
23.1
–
–
–
8-G4
G GENERAL
9T or
Property class 10.9
Aluminum Ordinariness
N·m kgf·m lbf·ft N·m kgf·m
7.9 0.80 5.8 12.3 1.25
to to to to
8.8 0.90 6.5 14.2 1.45
18 1.8 13 30
to to to to
34
20 2.1 15
40 4.0 29 61
to to to to
44 4.5 32 70
63 6.4 47 103 10.5
to to to to
72 7.4 53 117 12.0
167 17.0
– – – to
196 20.0
260 26.5
– – – to
304 31.0
344 35.0
– – – to
402 41.0
491 50.0
– – – to
568 58.0
lbf·ft
9.05
to to
10.4
3.0 22
to to
3.5 25
6.2 45
to to
7.2 52
76.0
to to
86.7
123
to to
144
192
to to
224
254
to to
296
362
to to
419
W1034542
W1048139
KiSC issued 06, 2009 A