General Tightening Torque Specification - Kubota ZD1600 Series Operator's Manual

GENERAL TIGHTENING TORQUE SPECIFICATION

GENERAL TIGHTENING TORQUE SPECIFICATION
American standard cap screws with UNC or UNF threads
SAE grade no.
(lbf⋅ft)
1/4 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
5/16 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
3/8 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
1/2 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
9/16 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
5/8 (N⋅m)
(kgf⋅m)
Thread size d Hex. bolt head
(mm) size B (mm)
M8 12 or 13
M10 14 or 17
M12 17 or 19
M14 19 or 22
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
ZD1611LF,ZD1611RLF,ZD1611RL
GR.5 GR.8
8-9.6 12-14.4
10.7-12.9 16.1-19.3
1.11-1.33 1.66-1.99
17-20.5 24-29
23.1-27.8 32.5-39.3
2.35-2.84 3.31-4.01
35-42 45-54
47.5-57.0 61.0-73.2
4.84-5.82 6.22-7.47
80-96 110-132
108.5-130.2 149.2-179.0
11.07-13.29 15.22-18.27
110-132 160-192
149.2-179.0 217.0-260.4
15.22-18.27 22.14-26.57
150-180 220-264
203.4-244.1 298.3-358.0
20.75-24.91 30.44-36.53
No mark
lbf⋅ft N⋅m
13.0-15.2 17.8-20.6
(14.1 ± 1.1) (19.2 ± 1.4)
28.9-33.3 39.3-45.1
(31.1 ± 2.2) (42.2 ± 2.9)
46.3-53.5 62.8-72.6
(49.9 ± 3.6) (67.7 ± 4.9)
79.6-92.6 107.9-125.5
(86.1 ± 6.5) (116.7 ± 8.8)
Metric cap screws
Property class
(lbf⋅ft)
M6 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
M8 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
M10 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
M12 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
M14 (N⋅m)
(kgf⋅m)
(lbf⋅ft)
M16 (N⋅m)
(kgf⋅m)
kgf⋅m lbf⋅ft
1.9-2.1 17.5-20.3
(2.0 ± 0.1) (18.9 ± 1.4)
4.0-4.6 35.4-41.2
(4.3 ± 0.3) (38.3 ± 2.9)
6.4-7.4 57.1-66.5
(6.9 ± 0.5) (61.8 ± 4.7)
11.0-12.8 91.1-108.5
(11.9 ± 0.9) (99.8 ± 8.7)
ADJUSTMENT
Class 8.8 Class 10.9
7.2-8.3
9.81-11.3
1.0-1.15
17.4-20.2 21.7-25.3
23.6-27.4 29.4-34.3
2.4-2.8 3.0-3.5
35.5-41.2 44.9-52.1
48.1-55.8 60.8-70.5
4.9-5.7 6.2-7.2
57.2-66.5 76.0-86.8
77.5-90.1 103-117
7.9-9.2 10.5-12.0
91.2-108 123-144
124-147 167-196
12.6-15.0 17.0-20.0
145-166 192-224
196-225 260-303
20.0-23.0 26.5-31.0
7T
N⋅m kgf⋅m
23.5-27.5 2.4-2.8
(25.5 ± 2.0) (2.6 ± 0.2)
48.1-55.9 4.9-5.7
(52.0 ± 3.9) (5.3 ± 0.4)
77.6-90.2 8.0-9.2
(83.9 ± 6.3) (8.6 ± 0.6)
123.6-147.0 12.6-15.0
(135.3 ± 11.7) (13.8 ± 1.2)
117