Eaton Vickers V Series - Torque Loading for Direct Drives; Single Pumps; Double Pumps; Thru-drive pumps

32
Torque Loading for Direct Drives
Single pumps (not thru–drive models)
All listed shafts are satisfactory up to
maximum pressures in “Pressure and
speed limits” in operating data for each
series.
Double pumps
Where both cartridges are to be on-load
together, check that the sum of their
separate torques, taken from the graph
below (right), does not exceed the
torque limit in shaft torque Table 1.
Thru–drive pumps **VT* models
Where both the thru-drive pump and its
rear–mounted pump are to be on-load
together, check that the sum of the
torques generated will never exceed the
torque limit in shaft torque Table 2. Also
check that the torque required on the
rear-mounted pump never exceeds the
thru-drive torque limit in shaft torque
Table 2.
Table 1
Single & Double Pumps Shaft
Torque Ratings
Pump
Model
Shaft No.
Maximum input
torque
Nm (lbĆin)
25V or
25**V
1
11
86
174
292N
250 (2200)
250 (2200)
400 (3560)
550 (4900)
316 (2800)
35V or
35**V
1
11
86
292N
400 (3560)
580 (5100)
600 (5300)
400 (3560)
45V or
45**V
1
11
86
292N
400 (5300)
820 (7200)
820 (7200)
820 (7200)
Example:
A 3525V38A17 pump operating at 172
bar (2500 psi) front section and 138 bar
(2000 psi) rear section will require over
450 Nm (4000 lb-in) input torque.
Therefore, all listed shafts are
acceptable except No. 1.
Table 2 Thru-Drive Pumps
Shaft Torque Ratings
Pump
Model
Shaft
No.
Max. Input
Torque
Nm (lbĆin)*
ThruĆdrive
connection
202
A
B
131 (1160)
250 (2200)
25VT*S
25VS
242*VS
203
A
B
131 (1160)
316 (2800)
297
A
B
131 (1160)
316 (2800)
203
A
B
C
131 (1160)
316 (2800)
437 (3870)
297
A
B
C
131 (1160)
316 (2800)
437 (3870)
203
A
B
C
131 (1160)
384 (3400)
702 (6210)
297
A
B
C
131 (1160)
384 (3400)
702 (6210)
35VT*S
35VS
352*VS
45VT*S
45VS
45**VS
* Combined torque of Vickers VT" pump and thruĆdrive pump.
250 (2200)
400 (3560)
316 (2800)
292N
A
B
131 (1160)
316 (2800)
316 (2800)
600 (5300)
790 (7000)
810 (7200)
1020 (9000)
292N 400 (3560)
A
B
C
131 (1160)
316 (2800)
400 (3560)
292N 904 (8000)
A
B
C
131 (1160)
384 (3400)
702 (6210)
600
500
400
300
200
100
0
069
(1000)
138
(2000)
Input Torque (lb-in) Input Torque (Nm)
1000
2000
3000
4000
5000
Displacement
Code
60
50
42
38
35
30
25
21
17
14
12
11
8
5
Input Torque Requirement
Operating Pressure - bar (psi)
173
(2500)
Max. ThruĆdrive
Torque
Nm (lbĆin)