Product

VQ series single pumps

VQ series single pumps

Zhejiang Goodwill Machinery Co., Ltd.

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VQ series single pumps Details

VQ series single pumps


High performance composition vane pumps for walking machinery

The series high pressure resistant composition vane pumps with high performance are developed for engincering machinery application, especially for walking machinery. The main features are as follows:

1. Adopt the structure of hydraulic balancing composition vanes, making the resistant pressure higher to maximum 21 Mpa.

2. Adopt the structure of floating side plate supporting with its function of automatic tolerance compensation, which helps to get pressure balance and high performance under high rotation speed and high pressure.

3. Adopt bimetal flexible material for side plates, which dramatically improves the engagement performance of the gears and thus makes the pump working better and longer.

 

Model descriptions:

(F3-) 25VQ 21 A (F) -1 A 20 L
Front marks Code
of series
♦Displacement codes Pump port
connection
Mounting type shaft extension Outlet port position Designing No. Direction of rotation
No mark:
water-in oil
emulsion of
petroleum
series
F:Sul phosuccinic
ester fatty of acid
20VQ 2,3,4,5,6,7,8,9,10,11,12,14

A-SAE

4-bolted Flange

No marks:
Flange
el mounting
F-Foot
mounting
1-straight shaft
with key

(from cover end pump)
A-Opposition of inlet
B-counterclockwise 90"
from inlet

C.the same side of inlet

D-Clockwise 90"
from inlet

30 (from shaft cnd
pump)
L-counterclockwise
rotation
No marks:
Clockwise rotation
25VQ 10,12,14,15,17,19,21

151-spline shaft
1-straight shaft
with key

86-heavy-duty
straight shaft
with key
11-spline shaft

 

20
35VQ 21,25,30,32,35,38,45
45VQ 42,45,50,57,60,66,75

♦The rated displacement (USgpm) is under the conditions of 1200r/min and 0.69 Mpa(100psi).

 

Q series single pumps


Operating parameters

Models Displacement code Geometric
displacement
(mlr)
Max speed
(r/min)
Max pressure
(Mpa)

Typical outletflow |T
(L/min)

under Max speedand ur
Max pressure

Typical outlet power
(KW)

under Max speed and
Max pressure

Weight
20VQ 2 7 2700 21 16.4 7.2 11.8
3 11.7 2700 21 24.4 10.8
4 15 2700 21 32.7 14.4
5 18 2700 21 42.3 17.9
6 19 2700 21 50.6 21.5
7 22 2700 21 58.8 23.7
8 27 2700 21 56.4 25.1
9 30 2700 21 73.4 26
10 31.5 2700 21 81.7 26.8
11 36 2700 21 88.5 27.7
12 40 2700 16 96.5 28.4
14 45 2700 14 115.4 29.1
25VQ 10 32.5 2700 21 81.4 35.2 14.5
12 38.3 2700 21 88.5 41
14 43.3 2700 21 103.8 46.6
15 47.3 2500 21 109.4 48.1
17 52.5 2500 21 119.2 51.8
19 60 2500 21 133.5 55.2
21 65 2500 21 146.2 61.9
35VQ 21 64 2500 21 145.5 63.7 22.7
25 79.2 2500 21 173.1 75.3
30 95 2500 21 211.5 87.7
32 101 2500 21 220.2 92.2
35 109 2400 21 230.8 98.5
38 118 2400 21 250 104.4
45 147 2400 21 271.2 99.8
45VQ 42 134 2400 17.5 255.8 91.4 34.1
45 147 2200 17.5 271.2 99.8
50 156 2200 17.5 303.8 105.2
57 180 2200 17.5 343.7 120.2
60 189 2200 17.5 369.2 126.8
66 208 2200 17.5 408.7 142.4
75 237 2200 14 460 120.2

Performance parameters: SAE 10W hydraulic fluid ♦82℃(180"F), pump inlet ♦0 PSIG(14.71/Psia ) Notes: The pressure of outlet port must be higher than the one of inlet port.

 

Characteristic curve with 10W type oil(26cst)under 50℃ and no load


20VQ output flow,input power

25Va output flow,input power

45VQ output flow,input power

35VQ output flow,input power

 

Operation and Maintenance

♦Hydraulic oil

       It is recommended to adopt anti-wear hydraulic fluids with viscosity of 32est-68est under the temperature of 40℃, or automobile crankcase oil with alphabetic marks of SC, SD, SE or SF. The recommended viscosity under rated rotation speed and rated pressure should range from 13est to 54est with the temperature range of 49℃ to 65℃.

♦Cold start

      In the case of adopting SAE l0W type hydraulie oil with viscosity between 860cst and 5est, the operating rotation speed and pressure shall be limited within 50% of rated rotation speed and rated pressure respeetively, until the system warms up. Particular attention should be paid to make sure that the whole system including the cylinder and motor on the far away side shall be all warmed up, when the pump starts up with the hydraulic oil viscosity exceeding 860cst.

♦High temperature operation

      While working under high temperature, the viscosity shall not be less than I 3est, and the temperature shall not exceed 99 ℃. Otherwise, the service lifetime of pump core components and sealing parts will be reduced.

 

Installation sizes


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