Parker K Series - Tightening Torque Specifications

60 - PVD 3674_GB_K Series_CE-November 2016.Docx
4.2.1. Tightening torque
The table below gives the average tightening torques required regarding the fixing
screw diameter. These values are valid for both motor’s feet and flange bolting.
Screw diameter
Tightening torque
Screw diameter
Tightening torque
M2 x 0.35
0.35 N.m
M9 x 1.25
31 N.m
M2.5 x 0.4
0.6 N.m
M10 x 1.5
40 N.m
M3 x 0.5
1.1 N.m
M11 x 1.5
56 N.m
M3.5 x 0.6
1.7 N.m
M12 x 1.75
70 N.m
M4 x 0.7
2.5 N.m
M14 x 2
111 N.m
M5 x 0.8
5 N.m
M16 x 2
167 N.m
M6 x1
8.5 N.m
M18 x 2.5
228 N.m
M7 x 1
14 N.m
M20 x 2.5
329 N.m
M8 x 1.25
20 N.m
M22 x 2.5
437 N.m
M24 x 3
564 N.m
Warning: After 15 days, check all tightening torques on all screw and
nuts.