Driveshafts for Industrial Applications - GWB

Technical instructions for application
In such arrangements, the individual
yoke positions and deflection
angles should be adjusted
with regard to one another in
such a way that the degree of
non-uniformity (see General
theoretical instructions) and the
reaction forces acting on the
connection bearings (see Technical
instructions for application)
are minimized.
Load on bearings of the connected
units
Axial forces
For the design of a driveshaft, it
must be taken into account that
axial forces can occur. These
forces must be absorbed by axial
thrust bearings of the connected
units.
1. Frictional force F RL
This is the force that occurs
in the length compensation.
It can be determined from:
m
F RL = T · · cos b
r m
F RL = Frictional force from the
length compensation [N]
It depends on:
T = Torque of the driveshaft
[Nm]
r m = Pitch circle radius in the
sliding parts of the driveshaft
[m]
m = Friction coefficient (depends
on spline treatment):
• 0,08 for plastic-coated
splines
• 0,11 for steel/steel (greased)
b = Operating deflection angle
Axial forces will occur during
length variations in the driveshaft.
Additional axial forces are
caused by increasing torque and
by increasing pressure during
lubrication of the splines. These
forces will decrease automatically
and can be accelerated by the
installation of a relief valve.
2. Power F p
This force occurs in the length
compensation due to the increasing
pressure in the lubrication
grooves of the driveshaft.
The force depends on the lubrication
pressure (maximum permissible
pressure is 15 bar).
The axial force A k is a combination
of two components:
Dana’s environmental protection management policy
An important feature of Dana’s environmental protection
management policy is dedication to product responsibility.
Because of this commitment, the effect of driveshafts on the
environment is given considerable attention. GWB TM driveshafts
are lubricated with lead-free grease, their paint finishes
are low in solvents and free of heavy metals, and they are
easy to maintain. After use, they can be introduced into the
recycling process.
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