Bosch Rexroth A2FM series - Effect of radial force Fq on the service life of bearings

RE 91001-01-X-B2/01.2016, Bosch Rexroth AG
Axial piston fixed motor | A2FM for explosive areas
Technical data
9
Effect of radial force F
q
on the service life of bearings
By selecting a suitable direction of radial force F
q
, the load
on the bearings, caused by the internal rotary group forces
can be reduced, thus optimizing the service life of the
bearings. Recommended position of mating gear is depen‑
dent on direction of rotation. Examples:
Gear output drive V-belt output
NG
φ
opt
φ
opt
10 to 180 ±70° ±45°
Note
▶ The permissible axial force in direction −F
ax
is to be
avoided as the lifetime of the bearing is reduced.
▶ Special requirements apply in the case of belt drives.
Please contact us.
▼ Toothed gear output drive
2
3
1
A B
φ
opt
φ
opt
1 “Counter‑clockwise” rotation. Pressure at port B
2 “Clockwise
” rotation, Pressure at port A
3 Bidirectional direction of rotation