Preload Forces And Tightening Torques Of Bolts - Bauer LINESTAR 9000 Operating Manual

18.4.1 PRELOAD FORCES AND TIGHTENING TORQUES OF BOLTS

The listed preload forces and torques concern

standard metric threads according to DIN 13

bolt head bearing faces according to DIN 912, 931, 934, 6912, 7984 and 7990

coarse inch threads (UNC)

fine inch threads (UNF)
and assume a bolt deformation limit of 90° and a friction factor of 0.14 (new bolt, no finishing, unlubricated).
dimension
dimension
dimension
When mounting the wheel gears never use an impact wrench for tightening the 1/2" UNC bolts.
You risk damaging the thread inside the gearbox.
Operating Manual for BAUER LINESTAR 9000 with hose feed
Bolts with standard metric thread DIN 13
quality
M 8 8.8
M 10 8.8
M 12 8.8
M 14 8.8
M 16 8.8
M 20 8.8
M 24 8.8
Bolts with standard UNC thread
quality
1/4" S
5/16" S
1/2" S
Bolts with standard UNF thread
quality
9/16" S
torque preload force
Nm N
25.5 16230
50 25791
87.3 37657
138.3 51681
210.8 71196
411.9 111305
711 160338
torque preload force
Nm N
12.5 10080
21.3 13954
92.7 38463
torque preload force
Nm N
150 57143
55