Sinoboom TB20J Plus - Fastener Torque Specifications

© Feb. 2023 20 TB20J Plus Maintenance Manual
TECHNICAL CHARACTERISTICS
Table 3-21 Special torque requirements
No.
Description Torque value
1
Wheel fastening nut 300Nm (221ft-lb)
2
Travel reducer fastening bolt 300Nm (221ft-lb)
3
Slewing reducer fastening bolt 450Nm (332ft-lb)
4
Slewing bearing fastening bolt 300Nm (221ft-lb)
5
Slewing cushion valve fastening bolt 26Nm (19ft-lb)
6
Counterweight fastening bolt 730Nm (538ft-lb)
7
Cable fastening nut M8 9～11Nm (6.6～8.1ft-lb)
8
Cable fastening nut M10 18～23Nm (13.2～17ft-lb)
9
Wire rope adjusting nut 112Nm (82.68ft-lb)
10
Swing cylinder fastening bolt 100Nm (74ft-lb)
11
Swing cylinder fastening nut 630Nm (465ft-lb)
Fastener Torque Specifications
Unless special torque requirements are stated in this manual or other instructions, torque metric bolts to the values
listed in the table below.
Table 3-22 Fastener torque specifications-Metric
Nominal
diameter (mm)
Pitch (mm)
Class 8.8 Class 10.9 Class 12.9
5 0.8
7Nm (5ft-lb) 9Nm (7ft-lb) 10Nm (7ft-lb)
6 1
12Nm (9ft-lb) 15Nm (11ft-lb) 18Nm (13ft-lb)
8
1.25
30Nm (22ft-lb) 35Nm (26ft-lb) 42Nm (31ft-lb)
1
30Nm (22ft-lb) 37Nm (27ft-lb) 45Nm (33ft-lb)
10
1.5
55Nm (41ft-lb) 75Nm (55ft-lb) 85Nm (63ft-lb)
1.25
56Nm (41ft-lb) 77Nm (57ft-lb) 87Nm (64ft-lb)
1
60Nm (44ft-lb) 80Nm (59ft-lb) 92Nm (68ft-lb)
12
1.75
95Nm (70ft-lb) 125Nm (92ft-lb) 150Nm (111ft-lb)
1.5
100Nm (74ft-lb) 130Nm (96ft-lb) 155Nm (114ft-lb)
1.25
105Nm (77ft-lb) 135Nm (100ft-lb) 160Nm (118ft-lb)
14
2
150Nm (110ft-lb) 200Nm (148ft-lb) 230Nm (170ft-lb)
1.5
165Nm (122ft-lb) 210Nm (155ft-lb) 250Nm (184ft-lb)
16
2
230Nm (170ft-lb) 300Nm (221ft-lb) 360Nm (266ft-lb)
1.5
250Nm (184ft-lb) 320Nm (236ft-lb) 380Nm (280ft-lb)
18
2.5
320Nm (236ft-lb) 420Nm (310ft-lb) 500Nm (369ft-lb)
1.5
360Nm (266ft-lb) 470Nm (345ft-lb) 550Nm (406ft-lb)
20 2.5
450Nm (332ft-lb) 600Nm (443ft-lb) 700Nm (516ft-lb)