Table of Contents
Advertisement
9-34
Application Notes
Grease service life frame size
bearing in exceptional cases. In this case, the expected grease service
life increases. However, the increased loading of the standard bearing
reduces the available mechanical lifetime below 30000 operating hours.
⇒ This requires subsequent calculation of the bearing lifetime by
Rexroth. In this case, contact one of our branch offices and explain
your application with all relevant application data (load cycle, axial and
radial loads, speeds).
The calculation and dimensioning of the bearing is based on
standard DIN ISO 281.
See the diagrams below for the available grease service life of the deep-
groove ball bearings and cylindrical roller bearings in IndraDyn A motors.
The diagrams show different characteristic curves depending on bearing
type, standard, high-speed, or reinforced bearing, and bearing for the
coupling connection.
100
t
:
Grease service life (without reduction factors)
f
(1):
Standard and high-speed bearings, and bearing for coupling
connection
n
:
mean speed (calculation see Fig. 9-40)
m
Fig. 9-44:
Grease service life frame size 100
Rexroth IndraDyn A
1
n m [min -1 ]
Fettgebrauchsdauer_MAx100.EPS
DOK-MOTOR*-MAD/MAF****-PR03-EN-P
Advertisement
Table of Contents
