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5.9 Torque values for international metric thread joints
All bolted joints on this machine must be torqued in accordance with the values given in this table below unless indicated
otherwise (e.g. in Parts List or Installation Instruction, etc.)
On all Kverneland Geldrop machines 8.8 is both standard and minimum quality used. If not indicated anyhow use this quality
for determination of torque (in most cases the quality can be found on the head of the respective bolt).
Thread
8.8*
Nm
M3
1.3
M4
2.9
M5
5.7
M6
9.9
M8
24
M10
48
M12
85
M14
135
M16
210
M18
290
M20
400
M22
550
M24
700
M27
1040
M30
1410
M33
1910
M36
2450
M39
3200
* Material quality in acc. with DIN ISO 898.
** Value in brackets means inch-pounds (in-lb).
*** Size of jaw of lock bolts and nuts with toothed flange are given (metric values only) in brackets if different
from standard.
The listet values are applicable for dry or slightly oiled joints.
-
-
When a stiff grease is applied decrease the given value by 10%. Do not use plated bolts/screws/nuts without
grease.
-
In case lock nuts, lock screws or lock bolts are used the given value must be increased by 10%.
Torque value of wheel nuts M18x1,5 shall be 270 Nm (200 ft-lb)!
-
Tensile strength
2
N/mm
lbf/sq.in.
G0309MKA3
Torque value
10.9*
ft-lb**
Nm
(11.5)
1.8
(25.5)
4.1
(50.5)
8.1
7.3
14
17.7
34
35.4
68
62.7
120
99.6
190
155
290
214
400
295
570
406
770
517
980
767
1460
1041
1980
1410
2700
1808
3450
2362
4500
Material quality acc. to DIN ISO 898
8.8
up to and incl. M16
808
117,222
12.9*
ft-lb**
Nm
(16)
2.1
(36.5)
4.9
(71.5)
9.7
10.3
17
25
41
50.2
81
88.6
145
140
225
214
350
295
480
421
680
568
920
723
1180
1077
1750
1461
2350
1996
3200
2546
4150
3321
5400
over M16
830
1040
120,414
150,880
Size of jaw***
ft-lb**
mm
(18.6)
6
(43.5)
7
(86)
8
12.5
10
30.3
13
59.8
17 (15)
107
19 (17)
166
22 (19)
258
24 (22)
354
27
502
30
679
32
871
36
1291
41
1734
46
2362
50
3063
55
3985
60
10.9
12.9
1220
176,994
inch
7/32
9/32
5/16
13/32
33/64
11/16
3/4
7/8
1
21/128
1
9/128
1
3/16
1
17/64
1
27/64
1
79/128
1
13/16
1
31/32
2
11/64
2
3/8
EN25
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