Doosan D20S-5 Operation & Maintenance Manual page 138

Maintenance Section Maintenance Section
Torques for Taperlock Studs Torques for Taperlock Studs
Thread Size Thread Size
Inch Inch
1/4 1/4
5/16 5/16
3/8 3/8
7/16 7/16
1/2 1/2
5/8 5/8
3/4 3/4
7/8 7/8
1 1
1/8 1/8
1/4 1/4
3/8 3/8
1/2 1/2
1 1
1 Newton meter (N•m) is approximately the same as 0.1 kg•m. 1 Newton meter (N•m) is approximately the same as 0.1
Standard Taperlock Stud Torque Standard Taperlock Stud Torque
1 1
N N • • m m lb lb • • ft ft
8 8 ± ± 3 3 6 6 ± ± 2 2
17 17 ± ± 5 5 13 ± ± 4 4 13
35 35 ± ± 5 5 26 ± ± 4 4 26
45 ± ± 10 45 10 33 ± ± 7 7 33
65 65 ± ± 10 10 48 ± ± 7 7 48
110 ± ± 20 110 20 80 80 ± ± 15
170 170 ± ± 30 30 125 125 ± ± 22
260 260 ± ± 40 40 190 ± ± 30 190
400 ± ± 60 400 60 300 ± ± 45 300
500 500 ± ± 700 700 370 ± ± 50 370
650 650 ± ± 80 80 480 480 ± ± 60
750 ± ± 90 750 90 550 ± ± 65 550
870 870 ± ± 100 100 640 640 ± ± 75
-135- -135-
Torque for Metric Fasteners Torque for Metric Fasteners
Be very careful never to mix metric with U.S. Be very careful never to mix metric with U.S.
customary (standard) fasteners. Mismatched or customary (standard) fasteners. Mismatched or
incorrect fasteners will cause lift truck damage or incorrect fasteners will cause lift truck damage or
malfunction and may even re malfunction and may even result in personal injury.
Original fasteners removed from the lift truck should Original fasteners removed from the lift truck should
be saved for reassembly whenever possible. If new be saved for reassembly whenever possible. If new
fasteners are needed, they must be of the same fasteners are needed, they must be of the same
size and grade as the ones that are being replaced. size and grade as the ones that a
15
The material strength identification is usually shown The material strength identification is u
22
on the bolt head by numbers (8.8, 10.9, etc.). This on the bolt head by numbers (8.8, 10.9, etc.). This
30
chart gives standard torques for bolts and nuts with chart gives standard torques for bolts and nuts with
Grade 8.8. Grade 8.8.
45
50
NOTE: NOTE: Metric hardware must be replaced with Metric hardware must be replaced with
metric hardware. Check parts book. metric hardware. Check parts book.
60
65
Thread Size Thread Size
75
Metric Metric
kg•m.
M6 M6
M8 M8
M10 M10
M12 M12
M14 M14
M16 M16
M20 M20
M24 M24
M30 M30
M36 M36
1 1
1 Newton meter (1 N•m) is approximately the same as 0.1 1 Newton meter (1 N•m) is approximately the same as 0.1
kg•m. kg•m.
2 2
ISO - Inte ISO - International Standards organization. rnational Standards organization.
NOTICE NOTICE
sult in personal injury.
re being replaced.
Standard Torque Standard Torque
1 1
N N • • m m
12 ± ± 4 4 12
25 25 ± ± 7 7
55 ± ± 10 55 10
95 ± ± 15 95 15
150 150 ± ± 20 20
220 220 ± ± 30 30
450 ± ± 70 450 70
775 ± ± 100 775 100
1600 1600 ± ± 200 200 1180 ± ± 150 1180
2700 2700 ± ± 400 400 2000 ± ± 300 2000
sually shown
lb lb • • ft ft
9 9 ± ± 3 3
18 ± ± 5 5 18
41 41 ± ± 7 7
70 ± ± 11 70 11
110 110 ± ± 15 15
160 ± ± 22 160 22
330 ± ± 50 330 50
570 570 ± ± 75 75
150
300