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11.1 Bolt Torque
Torque fi gures indicated in the charts are used for
non-greased or non-oiled threads and heads unless
otherwise specifi ed. Therefore, do not grease or oil
bolts or cap screws unless otherwise specifi ed in this
manual. When using locking elements, increase torque
values by 5%.
The tables shown below give correct torque values for
various bolts and capscrews. Tighten all bolts to the
torques specifi ed in the charts unless otherwise noted.
Check tightness of bolts periodically, using the bolt
torque chart as a guide. Always replace hardware with
the same Grade bolt.
11.1.1 Standard Torque Values
Bolt
Diameter
Grade 2
N·m
1/4"
8
5/16"
13
3/8"
27
7/16"
41
1/2"
61
9/16"
95
5/8"
128
3/4"
225
7/8"
230
1"
345
Titan Implement, LLC
(423) 334-0012
English Bolt Torque Specifications*
Grade 5
No Marking
ft.lbs.
N·m
6
12
10
25
20
45
30
72
45
110
60
155
95
215
165
390
170
570
225
850
53
WARNING
EQUIPMENT FAILURE
The torque value for bolts and capscrews are
OEM
OEM
identifi ed by their head markings. Replacing
higher "Grade" bolts (Grade 5) with lower Grade
bolts will lead to equipment failure and can result in
injury or death. Always use replacement bolts with
the same Grade markings as the removed bolt.
Grade 8
3 Radial Lines
ft.lbs.
9
19
33
53
80
115
158
290
420
630
6 Radial Lines
N·m
ft.lbs.
17
12
36
27
63
45
100
75
155
115
220
165
305
220
540
398
880
650
1320
970
1200-1600 Series Rotary Cutters
August 2016
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