Bosch Rexroth A6VM series 71 User Manual

RE-A 91610/12.2015, Bosch Rexroth Corp.
Axial piston variable motor | A6VM series 71
Technical data
9
Permissible radial and axial forces of the drive shafts
Size NG 60 85 115 150 150 170 215
Drive shaft in 1 1/4 1 1/2 1 3/4 1 3/4 2 2 2
Maximum radial force
1)
at distance a
(from shaft collar)
a
F
q
F
q max
lb 1713 2802 3350 3585 3917 4355 5081
N 7620 12463 14902 15948 17424 19370 22602
a
in 0.94 1.06 1.32 1.32 1.32 1.32 1.32
mm 24.0 27.0 33.5 33.5 33.5 33.5 33.5
Torque maximum at F
q max
T
max
lb-ft 229 439 611 656 803 679 939
Nm 310 595 828 890 1089 1230 1445
Differential pressure maximum
at V
g max
and F
q max
Δp
max
psi 4550 6400 6500 5350 6500 6500 6100
bar 315 440 450 370 450 450 420
Maximum axial force,
at standstill or
pressure-free operation
+
F
ax
—
+F
axmax
lb 0 0 0 0 0 0 0
N 0 0 0 0 0 0 0
− F
ax max
lb 112 160 202 232 232 252 281
N 500 710 900 1030 1030 1120 1250
Permissible axial force per psi (bar)
operating pressure
+F
axperm/bar
lb/psi 0.12 0.15 0.18 0.21 0.21 0.23 0.26
N/bar 7.5 9.6 11.3 13.3 13.3 15.1 17.0
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:
Notes
▶ The values given are maximum values and do not apply
to continuous operation.
▶ The permissible axial force in –F
ax
direction is to be
avoided, because thereby the bearing life is reduced.
▶ Special requirements apply in the case of belt drives.
Please contact us.
▼ Toothed gear output drive
φ
o
p
t
=
4
5
°
φ
o
p
t
=
4
5
°
21
3
1 Direction of rotation "counter-clockwise", pressure at port B
2 Direction of rotation "clockwise", pressure at port A
3 Bidirectional direction of rotation
1) With intermittent operation

Bosch Rexroth A6VM series 71 Specifications

General

Brand	Bosch
Model	Rexroth A6VM series 71
Category	Engine
Language	English