Bosch Rexroth A6VM series 71 Manual page 9

Permissible radial and axial forces of the drive shafts
Size
Drive shaft
Maximum radial force 1)
at distance a
(from shaft collar)
Torque maximum at F
q max
Differential pressure maximum
at V and F
g max q max
Maximum axial force,
+
F
at standstill or
ax
—
pressure-free operation
Permissible axial force per psi (bar)
operating pressure
Effect of radial force 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. Examples:
▼ Toothed gear output drive
1
1 Direction of rotation "counter-clockwise", pressure at port B
2 Direction of rotation "clockwise", pressure at port A
3 Bidirectional direction of rotation
With intermittent operation
1)
NG
in
lb
F
F q max
q
N
in
a
a
mm
lb-ft
T
max
Nm
psi
Δp
max
bar
lb
+ F
ax max
N
− F lb
ax max
N
lb/psi
+ F
ax perm/bar
N/bar
, the load
q
3
2
Axial piston variable motor | A6VM series 71
60 85 115
1 1/4 1 1/2 1 3/4
1713 2802 3350
7620 12463 14902
0.94 1.06 1.32
24.0 27.0 33.5
229 439 611
310 595 828
4550 6400 6500
315 440 450
0 0 0
0 0 0
112 160 202
500 710 900
0.12 0.15 0.18
7.5 9.6 11.3
Notes
▶ The values given are maximum values and do not apply
to continuous operation.
▶ The permissible axial force in –F
avoided, because thereby the bearing life is reduced.
▶ Special requirements apply in the case of belt drives.
Please contact us.
Technical data
150 150 170
1 3/4 2 2
3585 3917 4355
15948 17424 19370
1.32 1.32 1.32
33.5 33.5 33.5
656 803 679
890 1089 1230
5350 6500 6500
370 450 450
0 0 0
0 0 0
232 232 252
1030 1030 1120
0.21 0.21 0.23
13.3 13.3 15.1
direction is to be
ax
RE-A 91610/12.2015, Bosch Rexroth Corp.
9
215
2
5081
22602
1.32
33.5
939
1445
6100
420
0
0
281
1250
0.26
17.0