Radial load, axial load
[1]
Breakage characteristic of the plain shaft
[2]
Breakage characteristic of the shaft with keyway
n
Arithmetic mean speed
x
Point of application of force
Fig. 7-25:
Exemplary shaft load diagram
Maximum allowed radial force F
ra‐
dial_max
The maximum allowed radial force F
radial_max
depends on the following factors:
●
Shaft break load
●
Point of application of force x
●
Shaft design (plain [1]; with keyway [2])
Allowed radial force F
radial
The allowed radial force F
radial
depends on the following factors:
●
Arithmetic mean speed (n
mean
)
●
Point of application of force x
●
Bearing service life
Allowed axial force F
axial
The maximum allowed axial force F
axial
is specified in the technical data.
Average speed
The run-up and braking times can be ignored in the calculation, if the time in
which the drive is operated at a constant speed is significantly greater than
the acceleration and braking time. In the exact calculation of the average
speed according to the following example, the run-up and braking times are
taken into account.
Bosch Rexroth AG
DOK-INDRV*-KCU02+KSM02-PR03-EN-P
228/337
Rexroth IndraDrive Mi Drive Systems with KCU02 KSM02, KMS02/03, KMV03, KNK03
Notes on project planning
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01