Bosch Rexroth A7VO 63 Series Manual page 8

8 A7VO Series 63 | Axial piston variable pump
Technical data
Permissible radial and axial forces of the drive shaft
Size
Drive shaft
Maximum radial force 1)
at distance a (from shaft
collar)
Maximum torque at F
q max
Maximum differential pressure at V
F
q max
Maximum axial force at
standstill or pressure-
free operation
Permissible axial force per bar operating pressure
Effect of radialforce F on the service life of bearings
q
By selecting a suitable direction of radial force F
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. Example:
▼ Gear drive
1
1 "Clockwise" rotation, pressure at port B
2 "Counter-clockwise" rotation, pressure at port A
With intermittent operation
1)
Bosch Rexroth AG, RE 92202/02.2015
NG
Ø
F
F
q
q max
a
a
T
q max
and
Δp
g max
q max
+ F
ax max
F
+
ax –
− F
ax max
+ F /bar
ax perm
, the load
q
2
28 55
mm 25 30
N 6436 7581
mm 14.0 17.5
Nm 179 281
bar 400 322
N 0 0
N 315 500
N/bar 4.6 7.5
Note
▶ The permissible axial force in direction −F
avoided, because thereby the bearing life is reduced.
▶ Special requirements apply in the case of belt drives.
Please contact us.
80 107 160
35 40 45
13758
10266 18278
20.0 22.5 25.0
444 681 1019
349 400 400
0 0 0
710 900 11250
9.6 11.3 15.1
is to be
ax