Kubota ZD221, Operator'S Manual

Page: 89 / 95

ADJUSTMENT 72
ENGLISH
TIGHTENING TORQUE CHART
Thread
size
d (mm)
Hexa-Bolt
Head size
B (mm)
No mark 7T
ft-lbs N-m kgf-m ft-lbs 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
(86.1 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)
A
Figure "7" on the top of the bolt indicates that the bolt is of special material.
A
Before tightening, check the figure on the top of bolt.