Tightening Torques; General Use Screws, Bolts And Nuts; Stud Bolts - Kubota WSM BX1880 Workshop Manual

TIGHTENING TORQUES

1. General use screws, bolts and nuts
TIGHTENING TORQUES

1. General use screws, bolts and nuts

Indica-
tion on
top of
bolt
Indica-
tion on
top of
nut
Materi-
al of
oppo- Ordinariness
nent
part
Unit N⋅m kgf⋅m lbf⋅ft
7.9 to 0.80 to 5.8 to
M6
9.3 0.95 6.8
1.8 to
M8 18 to 20 13 to 15 17 to 19
2.1
4.0 to
M10 40 to 45 29 to 33 32 to 34
4.6
6.4 to
M12 63 to 72 47 to 53
7.4
108 to 11.0 to 79.6 to
M14
125 12.8 92.5
167 to 17.0 to 123 to
M16
191 19.5 141
246 to 25.0 to 181 to
M18
284 29.0 209
334 to 34.0 to 246 to
M20
392 40.0 289

2. Stud bolts

Material of oppo-
nent part
Unit N⋅m
M8 12 to 15
M10 25 to 31
M12 30 to 49
M14 62 to 73
M16 98.1 to 112
M18 172 to 201
BX1880,BX2380,BX2680,RCK60B-23BX,RCK54-23BX,RCK48-18BX,RCK60D-26BX,RCK54D-26BX
No-grade or 4T
No-grade or 4T
Aluminum
N⋅m kgf⋅m lbf⋅ft N⋅m
7.9 to 0.80 to 5.8 to 9.81 to
8.8 0.90 6.5 11.2
1.7 to
13 to 14 24 to 27
2.0
3.2 to
24 to 25 48 to 55
3.5
－ － － 78 to 90
124 to
－ － －
147
197 to
－ － －
225
275 to
－ － －
318
368 to
－ － －
431
Ordinariness
kgf⋅m
1.2 to 1.6
2.5 to 3.2
3.0 to 5.0
6.3 to 7.5
10.0 to 11.5 72.4 to 83.1
17.5 to 20.5 127 to 148
7T
Ordinariness Aluminum
kgf⋅m lbf⋅ft N⋅m
1.00 to 7.24 to 7.9 to
1.15 8.31 8.8
2.4 to
18 to 20 18 to 20
2.8
4.9 to
36 to 41 40 to 44
5.7
7.9 to
58 to 66 63 to 72
9.2
12.6 to 91.2 to
－
15.0 108
20.0 to 145 to
－
23.0 166
28.0 to 203 to
－
32.5 235
37.5 to 272 to
－
44.0 318
lbf⋅ft N⋅m
8.7 to 11 8.9 to 11
18 to 23 20 to 25
22 to 36 31
46 to 54
－
－
－
2. GENERAL
Ordinariness
kgf⋅m lbf⋅ft N⋅m kgf⋅m
0.80 to 5.8 to 12.3 to 1.25 to
0.90 6.5 14.2 1.45
1.8 to 3.0 to
13 to 15 30 to 34
2.1 3.5
4.0 to 6.2 to
29 to 32 61 to 70
4.5 7.2
6.4 to 103 to 10.5 to
47 to 53
7.4 117 12.0
167 to 17.0 to
－ －
196 20.0
260 to 26.5 to
－ －
304 31.0
344 to 35.0 to
－ －
402 41.0
491 to 50.0 to
－ －
568 58.0
Aluminum
kgf⋅m lbf⋅ft
0.90 to 1.2 6.5 to 8.6
2.0 to 2.6 15 to 18
3.2
－
－
－
KiSC issued 03, 2019 A
9T
6T
lbf⋅ft
9.05 to
10.4
22 to 25
45 to 52
76.0 to
86.7
123 to
144
192 to
224
254 to
296
362 to
419
23
－
－
－
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