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General
Bosch Rexroth Mellansel AB
, Intallation and maintenance manual, Hägglunds VI, RE 15310-WA/10.2015
Motor type
Full displacement
Max.***
pressure
Displacement shift
Ratio
Displace-
ment
Specific
torque**
Rated
speed*
Max.
Speed
Displace-
ment
Specific
torque**
Rated
speed*
Max.
speed
V
i
T
s
n
n
p
V
i
T
s
n
n
44-03300
203
2 695
100
200
4 650
101
1 347
100
200
1:2
44-04700
287
3 814
100
200
4 650
144
1 907
100
200
1:2
44-06800
414
5 492
90
170
4 650
207
2 746
90
170
1:2
44-09200
564
7 475
80
145
4 650
282
3 738
80
145
1:2
64-11100
676
8 971
70
120
4 650
338
4 485
70
120
1:2
64-13500
823
10 935
60
110
3 600
411
5 467
60
110
1:2
64-16300
997
13 227
50
100
3 600
499
6 613
50
100
1:2
84-14800
906
12 017
55
90
4 650
–
–
–
–
–
84-17900
1 096
14 546
55
85
4 650
–
–
–
–
–
84-21300
1 304
17 292
55
80
4 650
–
–
–
–
–
84-25100
1 531
20 306
55
75
4 650
–
–
–
–
–
84-38000
2 320
30 756
40
60
3 600
–
–
–
–
–
84-22300
1 361
18 048
55
55
4 650
680
9 024
60
85
1:2
84-33800
2 064
27 339
35
35
3 600
1 031
13 669
50
70
1:2
84-25100
1 531
20 306
40
55
3 600
510
6 769
45
75
1:3
84-38000
2 319
30 756
25
35
3 600
773
10 252
35
60
1:3
84-25100
1 531
20 306
40
55
3 600
1 021
13 537
45
75
2:3
84-38000
2 319
30 756
25
35
3 600
1 546
20 504
35
60
2:3
* Related to a required charge pressure of 12 bar (175 psi) for motors in braking mode. Special considerations regarding charge
pressure, cooling and choice of hydraulic system for speeds above rated.
** Theoretical value
*** The motors are designed according to DNV-rules. Test pressure 70 bar (1000 psi) above max. pressure. Peak/transient pressure
70 bar (1000 psi) above max. pressure is allowed to occur 10000 times.
Quantity
Displacement
Specific torque
Speed
Pressure
Symbol
V
i
=
T
s
=
n =
p =
Metric
cm
3
/rev
Nm/bar
rpm
bar
US
in
3
/rev
lbf·ft/1000 psi
rpm
psi
1.3 Functional description
The Hägglunds VI motors are of radial piston type with rotating case. The case
is supported on the stationary cylinder block (5) by two main bearings. An even
number of radially positioned pistons (3) work in cylinder bores in the cy linder
block, which also houses the inlet and o ut let ports (A and C). Each piston is coupled
by a piston rod (2) to a cross head pin (6) upon which four cam rollers (7) are
mounted. The two inner cam rollers press against the cam ring (8) while the two
outer rollers work with in their respective guide plates (1). The cam ring is anchored
to the rotating case. The distributor (4) directs the input oil to the pistons during
their work strokes and re turns the exhausted oil back to the tank. The distributor is
coupled to the rotating case via a safety coupling (9).
The motor can be connected to a driven machine via two mounting surfaces on the
rear end of the motor.