Kubota Z231BR-AU, Operator'S Manual

Page: 76 / 85

TIGHTENING TORQUE CHART
Thread size d
(mm)
Hex. bolt head
size B (mm)
No mark 7T
lbf
⋅
ft N
⋅
m kgf
⋅
m lbf
⋅
ft N
⋅
m kgf
⋅
m
M8 12 or 13
13.0-15.2
(14.1 ± 1.1)
17.8-20.6
(19.2 ± 1.4)
1.9-2.1
(2.0 ± 0.1)
17.5-20.3
(18.9 ± 1.4)
23.5-27.5
(25.5 ± 2.0)
2.4-2.8
(2.6 ± 0.2)
M10 14 or 17
28.9-33.3
(31.1 ± 2.2)
39.3-45.1
(42.2 ± 2.9)
4.0-4.6
(4.3 ± 0.3)
35.4-41.2
(38.3 ± 2.9)
48.1-55.9
(52.0 ± 3.9)
4.9-5.7
(5.3 ± 0.4)
M12 17 or 19
46.3-53.5
(49.9 ± 3.6)
62.8-72.6
(67.7 ± 4.9)
6.4-7.4
(6.9 ± 0.5)
57.1-66.5
(61.8 ± 4.7)
77.6-90.2
(83.9 ± 6.3)
8.0-9.2
(8.6 ± 0.6)
M14 19 or 22
79.6-92.6
(81.6 ± 6.5)
107.9-125.5
(116.7 ± 8.8)
11.0-12.8
(11.9 ± 0.9)
91.1-108.5
(99.8 ± 8.7)
123.6-147.0
(135.3 ± 11.7)
12.6-15.0
(13.8 ± 1.2)
NOTE :
• Figure [7] on the top of the bolt indicates that the bolt is made of special material.
• Before tightening, check the figure on top of the bolt.
(1) Scale
TIGHTENING TORQUE CHART ADJUSTMENT
Z231BR-AU,Z231KH-AU,Z251BR-AU,Z251KH-AU
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