Danfoss V20H Vickers Vane Pump User Guide
- June 16, 2024
- Danfoss
Table of Contents
Danfoss V20H Vickers Vane Pump
Introduction
Series V20H and V2020H fixed displacement pumps are of Vickers “balanced vane type” construction. V20H single pumps have rated flow capacities of 5 to 13 US gpm. V2020H double pumps have capacities of 5 to 13 USgpm for their shaft-end and cover-end pumps. Double pumps provide a single power source capable of serving two separate hydraulic circuits, or of providing greater volume through the combined delivery of both sections. In either type of application, two pumps in a single housing result in a more compact, simple installation and can be driven through a single shaft coupling.
Features and Benefits
Unmatched Durability
Whether in heavy-duty industrial machinery or mobile applications, Vickers by
Danfoss vane pumps are built to endure the toughest operating conditions. The
design and build materials are field-proven, with years of service in the most
rugged applications. This longevity minimises maintenance requirements and
maximizes uptime, contributing to overall operational efficiency.
High Performance
Low vane tip/ring loading allows high-pressure operation. High speeds are
possible because the inlet flow paths are designed to give uniform oil
acceleration, and thus better filling characteristics, particularly at low
inlet pressures. All models are designed for use with oil or synthetic fire-
resistant fluids. Shaft rotation is either clockwise or counterclockwise, but
can be changed by changing the assembly of internal parts. SAE 2-bolt mounting
flanges are standard, and foot-mounting brackets are optional. Many electric
motor manufacturers can supply drip-proof or enclosed, fan-cooled motors with
end bells on which the pumps can be mounted.
Extended Product Life
Vickers Vane Pump’s advanced design includes features that contribute to
efficient fluid handling and reduced wear to deliver the consistent
performance needed for optimal system functionality
over time.
Low Cost
Vickers’ optimized design requires less horsepower per dollar invested,
providing the industry with an unparalleled price-to-performance ratio.
Versatility
High flow, pressure and speed capabilities enable these pumps to meet the
hydraulic circuit needs of many types of modern machinery.
Basic Performance Data – Single and Double Pumps
Typical operating characteristics at 1200 r/min with petroleum oil
Ring size Data based on performance at oil temperature of 49° C (120° F), viscosity 32 cSt at 38° C (150 SUS at 100° F)
7 bar (100 psi) 69 bar (1000 psi) 138 bar (2000 psi) **204 bar (3000 psi)**
V20H
single pump
| ****
Lpm (USgpm)
| ****
Input kW (hp)
| ****
Lpm (USgpm)
| ****
Input kW (hp)
| ****
Lpm (USgpm)
| ****
Input kW (hp)
| ****
Lpm (USgpm)
| ****
Input kW (hp)
---|---|---|---|---|---|---|---|---
– 5| 18.4 (4.9)| 0.2 (0.3)| 16.6 (4.4)| 1.9 (2.5)| 14.9 (3.9)| 3.43 (4.6)|
13.4 (3.5)| 4.6 (6.2)
– 6| 22.3 (5.9)| 0.3 (0.3)| 20.8 (5.5)| 2.4 (3.2)| 19.6 (5.2)| 4.5 (6.0)| 18.1
(4.8)| 6.1 (8.2)
– 7| 26.3 (6.9)| 0.3 (0.4)| 25.1 (6.6)| 2.9 (3.9)| 24.2 (6.4)| 5.56 (7.5)|
22.8 (6.0)| 7.9 (10.6)
– 8| 30.2 (8.0)| 0.4 (0.5)| 28.4 (7.5)| 3.3 (4.4)| 26.9 (7.1)| 6.18 (8.3)|
25.1 (6.6)| 8.6 (11.6)
– 9| 34.1 (9.0)| 0.4 (0.5)| 31.8 (8.4)| 3.7 (4.9)| 29.5 (7.8)| 6.79 (9.1)|
27.3 (7.2)| 9.4 (12.6)
– 10| 38.0 (10.1)| 0.4 (0.6)| 35.4 (9.4)| 4.1 (5.5)| 32.8 (8.7)| 7.54 (10.1)|
30.3 (8.0)| 10.4 (14.0)
– 11| 42.0 (11.1)| 0.5 (0.6)| 39.1 (10.3)| 4.5 (6.0)| 36.1 (9.5)| 8.29 (11.1)|
33.2 (8.8)| 11.5 (15.4)
– 12| 45.6 (12.1)| 0.5 (0.7)| 42.3 (11.2)| 4.9 (6.5)| 39.3 (10.4)| 9.03
(12.1)| 36.0 (9.5)| 12.4 (16.7)
– 13| 49.3 (13.0)| 0.6 (0.8)| 45.5 (12)| 5.2 (7.0)| 42.5 (11.2)| 9.76 (13.1)|
38.8 (10.3)| 13.4 (18.0)
Maximum speeds & pressures using fire-resistant fluids
Ring size / Maximum speed by fluid type – r/min/Maximum pressure by fluid type – bar (psi)
| Water-glycol and water-in-oil emulsion| ****
Synthetic fluid
| ****
Water glycol
| Water-in-oil emulsion| ****
Synthetic fluid
---|---|---|---|---|---
| | | | |
5, 6, 7, 8, 9| 1800| 1800| 124 (1800)| 109 (1575)| 138 (2000)
11| 1800| 1500| 109 (1575)| 93 (1350)| 138 (2000)
12, 13| 1800| 1500| 109 (1575)| 93 (1350)| 124 (1800)
NOTE: 3 inches of Hg is the maximum inlet vacuum for the maximum speeds above. See page 24 for complete application details.
Speed rating per inlet condition
Maximum operating speeds shown on performance curves are for pumps operating
at 0 psi inlet condition. To compute maximum operating speeds at other inlet
conditions, use appropriate speed rating correction factor shown on the curve
on the right.
Example:
Pump inlet suction should not exceed 5 in. Hg vacuum for petroleum oil or 3
in. Hg vacuum for other fluid types. Positive pressure on inlet should not
exceed 10 psi.
Single Pumps Model Code
Note: Some options may require additional lead time. Please contact sales representative for details.
Single Pumps Model Code Continued
Specifications
V20H Typical Performance Data : 1200 RPM Based on using petroleum oil at 49° C (120° F), viscosity 32 cSt at 38° C (150 SUS at 100° F), and 0 psi inlet pressure
Model
series
| Ring size| Displ.| Max.
Speed
| Maximum
pressure
| Typical
delivery
| Typical
input power Weight
---|---|---|---|---|---|---
| (Delivery USgpm| | | | L/min (USgpm)| kW (hp) @
| @ 1200 r/min| cm 3/r| | | @ max. speed| max.
speed
| & 100 psi)| (in 3/r)| r/min| bar (psi)| &
**pressure| & **pressure kg (lb)
| 5| 15.8 (1.0)| 3400| 204 (3000)| 47.1 (12.4)| 16.2 (21.8)
| 6| 19.1 (1.2)| 3400| 204 (3000)| 59.3 (15.7)| 20.4 (27.4)
| 7| 22.4 (1.4)| 3000| 204 (3000)| 62.6 (16.5)| 21.6 (29.0)
8| 25.6 (1.6)| 2800| 204 (3000)| 65.2 (17.2)| 22.5 (30.1)| 7.3 – 8.2
V20H 9| 28.9 (1.8)| 2800| 204 (3000)| 72.2 (19.1)| 24.9 (33.4)| (16
– 18)
10| 32.4 (2.0)| 2500| 204 (3000)| 70.7 (18.7)| 24.4 (32.7)|
11| 36.0 (2.2)| 2500| 204 (3000)| 77.4 (20.4)| 26.7 (35.8)|
12| 38.7 (2.4)| 2400| 204 (3000)| 80.0 (21.1)| 27.6 (37.0)|
13| 41.7 (2.5)| 2400| 204 (3000)| 85.6 (22.6)| 29.5 (39.6)|
Single Pumps V20H Dimensions Millimeters (inches)
See page 11 for foot mounting dimensions.
| Ring size| Dimension|
---|---|---|---
| A| B
5| 125.1 (4.92)| 102.2 (4.02)
6| 125.1 (4.92)| 102.2 (4.02)
7| 131.4 (5.17)| 108.6 (4.27)
8| 131.4 (5.17)| 108.6 (4.27)
9| 131.4 (5.17)| 108.6 (4.27)
10| 136.4 (5.37)| 113.6 (4.47)
No. 1 shaft| 11| 136.4 (5.37)| 113.6 (4.47)
| 12| 139.9 (5.51)| 117.1 (4.61)
| 13| 139.9 (5.51)| 117.1 (4.61)
Double Pumps Model Codes
Note: Some options may require additional lead time. Please contact sales representative for details.
V2020H Typical Performance Data : 1200 RPM Based on using petroleum oil at 49° C (120° F), viscosity 32 cSt at 38° C (150 SUS at 100° F), and 0 psi inlet pressure
Model
series
| Ring size| Displ.| Max.
Speed
| Maximum
pressure
| Typical
delivery
| Typical
input power Weight
---|---|---|---|---|---|---
| (Delivery USgpm| | | | L/min (USgpm)| kW (hp) @
| @ 1200 r/min| cm 3/r| | | @ max. speed| max.
speed
| & 100 psi)| (in 3/r)| r/min| bar (psi)| &
**pressure| & **pressure kg (lb)
| 5| 15.8 (1.0)| 3400| 204 (3000)| 47.1 (12.4)| 16.2 (21.8)
| 6| 19.1 (1.2)| 3400| 204 (3000)| 59.3 (15.7)| 20.4 (27.4)
| 7| 22.4 (1.4)| 3000| 204 (3000)| 62.6 (16.5)| 21.6 (29.0)
8| 25.6 (1.6)| 2800| 204 (3000)| 65.2 (17.2)| 22.5 (30.1)| 14.9-16.8
V2020H 9| 28.9 (1.8)| 2800| 204 (3000)| 72.2 (19.1)| 24.9 (33.4)|
(33-37)
10| 32.4 (2.0)| 2500| 204 (3000)| 70.7 (18.7)| 24.4 (32.7)|
11| 36.0 (2.2)| 2500| 204 (3000)| 77.4 (20.4)| 26.7 (35.8)|
12| 38.7 (2.4)| 2400| 204 (3000)| 80.0 (21.1)| 27.6 (37.0)|
13| 41.7 (2.5)| 2400| 204 (3000)| 85.6 (22.6)| 29.5 (39.6)|
NOTE: Maximum speed is controlled by the largest ring in the unit.
Double Pumps V2020H Dimensions Millimeters (inches)
Ring size| | Dimensions|
---|---|---|---
Cover end| Shaft end| A| B| C
5, 6| 5, 6| 206.9 (8.14)| 180.9 (7.12)| 107.3 (4.22)
5, 6| 7, 8, 9| 213.2 (8.39)| 187.3 (7.37)| 113.6 (4.47)
5, 6| 10, 11| 218.2 (8.59)| 192.3 (7.57)| 118.6 (4.67)
5, 6| 12, 13| 221.7 (8.73)| 195.8 (7.71)| 122.1 (4.81)
7, 8 or 9| 5, 6| 213.2 (8.39)| 187.3 (7.37)| 107.3 (4.22)
7, 8 or 9| 7, 8, 9| 219.5 (8.64)| 193.6 (7.62)| 113.6 (4.47)
7, 8 or 9| 10, 11| 224.6 (8.84)| 198.6 (7.82)| 118.6 (4.67)
7, 8 or 9| 12, 13| 228.1 (8.98)| 202.2 (7.96)| 122.1 (4.81)
10, 11| 5, 6| 218.2 (8.59)| 192.3 (7.57)| 107.3 (4.22)
10, 11| 7, 8, 9| 224.6 (8.84)| 198.6 (7.82)| 113.6 (4.47)
10, 11| 10, 11| 229.6 (9.05)| 203.6 (8.02)| 118.6 (4.67)
10, 11| 12, 13| 233.1 (9.18)| 207.2 (8.16)| 122.1 (4.81)
12, 13| 5, 6| 221.7 (8.73)| 195.8 (7.71)| 107.3 (4.22)
12, 13| 7, 8, 9| 228.1 (8.98)| 202.2 (7.96)| 113.6 (4.47)
12, 13| 10, 11| 233.1 (9.18)| 207.2 (8.16)| 118.6 (4.67)
12, 13| 12, 13| 236.6 (9.31)| 210.7 (8.29)| 122.1 (4.81)
Foot Bracket Kit
Dimensions Millimeters (inches)
Model| A| B| C| D| E| F| øG| øH|
J
---|---|---|---|---|---|---|---|---|---
FB-A-10| 134.9 (5.31)| 69.8 (2.75)| 152.4 (6.00)| 76.2 (3.00)| 127.0 (5.00)|
63.5 (2.50)| 106.37 (4.188)| 82.63 (3.253)| .375-16
FB-B-10| 180.8 (7.12)| 92.2 (3.63)| 171.4 (6.75)| 85.7 (3.38)| 146.0 (5.75)|
73.1 (2.88)| 146.0 (5.75)| 101.68 (4.003)| .500-13
V20H / V2020H Typical Performance
Oil temp. 49°C (120°F), viscosity 32 cSt (150 SUS) @ 38°C (100°F), inlet pressure zero
Oil temp. 49°C (120°F), viscosity 32 cSt (150 SUS) @ 38°C (100°F), inlet
pressure zero
Application and Service Information
Minimum Speed
Minimum recommended starting speed is generally 600 r/min. However, the pump
size, system characteristics and environmental conditions can raise or lower
this speed. A lower speed can often be achieved after the pump has primed.
If low starting or operating speeds are required, consult your Danfoss
representative.
Inlet Pressure
Recommended inlet pressure is 0 to 0.34 bar (0 to 5 psi) gauge at maximum
operating speeds. Inlet pressure should not exceed 0,69 bar (10 psi). Inlet
depressions should not exceed 5 inches of Hg with petroleum oil, or 3 inches
of Hg with all other fluids. A pressurized reservoir system does not always
assure a positive (supercharge) pressure at the pump inlet. Vacuum at the pump
inlet can result during cold start-ups. Avoid high speeds until the circuit
has warmed and supercharge pressure actually exists at the pump inlet.
Drives
Vickers by Danfoss pumps are designed for use on direct coaxial drives. If
drives imposing radial or axial loads are being considered, consult your
Danfoss representative for additional information. Concentricity and angular
alignment of shafts are important to pump life. Misalignment can induce heavy
loads on bearings, causing premature failure. Flexible coupling halves must be
aligned according to the coupling manufacturer’s recommendations. When using
double universal joint couplings, the shafts must be parallel and the yokes
must be in line. The offset should be kept as low as possible. Maximum
allowable offset will, of course, vary with application conditions. The pump
shaft to universal joint diametral fit should be close (major diameter fit)
with no looseness.
Mounting Dimensions
Concentricity of the customer’s female pilot diameter relative to the
effective axis of the female drive must be within 0.10 mm (.004 in.) total
indicator reading. The clearance between the male and female pilot diameters
must be +0.01 to +0.05 mm (+.0005 to +.0020 in.). The customer’s mounting face
to which the pump is affixed must be square to the axis of the female drive
within 0.04 mm per mm (.0015 in. per in.). Dimensions of the customer’s keyed
shaft receiver must be between +0.003 and +0.025 mm (+.0001 and +.0010 in.) of
the maximum shaft diameter shown on the Vickers installation drawing.
Valves and Circuitry
Protect against hydraulic surge pressures (inlet or outlet) applied to or
generated by the pump. Relief valves must prevent these surges from exceeding
published pressure ratings. Never assume a relief valve setting is the maximum
pressure a pump experiences. Shock conditions may exist that can exceed
circuit and pump limitations.
Shaft Loading
Never assume pumps in a double pump assembly can be simultaneously loaded to
rated pressure. Shaft loading must be checked for excessive torque and side
loads.
Piping
Hydraulic lines should be as short and have as large an inside diameter as
possible. Where lines are long, it is desirable to adapt to a larger capacity
line than a unit’s ports specify. Inlet, outlet and drain lines should not be
smaller than the nominal port size shown on installation drawings. A “Y”
shaped inlet should not be used to feed two separate pumps because one may be
starved and cavitate. There should be as few bends and fittings in lines as
possible. High-pressure lines and fittings are restrictive to flow and may
result in excessive pressure drop through the system. They should be used only
where necessary in a pressure line.
Hose
When installing a hose, allow enough slack to avoid kinking. A taut hose will
not allow movement with pressure surges. Slack in the line compensates for
surges, relieving strain. The hose should not be twisted during installation
or while in operation. Twisting will weaken the hose and loosen connections. A
neater installation is usually obtainable by using extra fittings to minimize
unusually long loops in a line. Hoses should be clamped to prevent rubbing and
entanglement with moving parts. Where hoses are subject to chafing, they
should be run through protective neoprene hose or shielded metallic guards.
Hydraulic Fluids
Pumps can be used with anti-wear hydraulic oil, or automotive-type crankcase
oil (designations SC, SD, SE, SF, or SG) per SAE J183 202007. Fire-resistant
fluids can also be used but may require the use of special seals as explained
in the following “Seals” section. The viscosity range of petroleum oil, with
the pump running, should be 13-54 cSt (70-250 SUS). The oil viscosity at 38° C
(100° F) should be 32-48 cSt (150-225 SUS). Fire-resistant fluids should have
a viscosity as close as possible to that of petroleum oil as described above.
A maximum specific gravity of 1.3 is suggested for fire-resistant fluids. An
operating temperature of 49° C (120° F) is recommended. The maximum
temperature for oil should be 65° C (150° F), and the maximum for water-
containing fluids should be 130° F. For additional fluid and temperature
information, reach out to your Danfoss sales representative.
Seals
Nitrile seals are suitable for use with petroleum, water-glycol, water-in-oil
emulsion, polyol ester, and high-water-base fluids. Phosphate ester fluids
require the use of fluorocarbon seals, which are identified in model codes.
Fluid Cleanliness
Proper fluid condition is essential for the long and satisfactory life of
hydraulic components and systems. The hydraulic fluid must have the correct
balance of cleanliness, materials and additives for protection against wear of
components, elevated viscosity and inclusion of air. Recommended cleanliness
levels, using petroleum oil under common conditions, are based on the highest
fluid pressure levels in the system and are coded in the chart below. Fluids
other than petroleum, severe service cycles, or personnel safety
considerations are cause for adjustment of these cleanliness codes. Vickers by
Danfoss products, as any components, will operate with apparent satisfaction
in fluids with higher cleanliness codes than those described. Other
manufacturers will often recommend levels above those specified. Experience
has shown, however, that the life of any hydraulic components is shortened in
fluids with higher cleanliness codes than those listed below. These codes have
been proven to provide a long trouble-free service life for the products
shown, regardless of the manufacturer.
Product| System Pressure Level – bar (psi)|
---|---|---
| < 70 ( <1000)| 70-210 (1000-3000)| 210+ (3000+)
Vane Pumps – Fixed| 20/18/15| 19/17/14| 18/16/13
Vane Motors| 20/18/15| 19/17/14| 18/16/13
Aeration
Reservoir and circuit design must prevent the aeration of the fluid.
Particular care must be used to employ joints, seals and gaskets that will not
leak or deteriorate. This is especially important in low-pressure and suction
lines. Connections should always be tight to prevent air from entering the
system. It is best to use windows and sight glasses in the reservoir and inlet
lines during prototype evaluation to determine whether significant amounts of
air are present in the fluid. Any opaque or milky appearance of the fluid in
the lines or reservoir indicates excessive aeration. Bubbles on the surface of
the reservoir fluid may indicate that excessive aeration is present.
Reservoir
The oil level of the reservoir should be as high as possible above the pump
suction line opening. All return lines should discharge near the tank bottom,
always below the oil level, and as far from the pump inlet as possible.
Reservoirs should incorporate a sight gauge, dipstick or other means for easy
checking of the oil level. Without these devices, the oil level often goes
unchecked and, should a leak occur, the pump can be starved and damaged from
loss of lubrication. Preferably, reservoirs should be located above pumps.
This creates a flooded pump inlet which reduces the possibility of pump
cavitation. Pump suction and tank return lines should be attached to the
reservoir by flanges or welded heavy-duty coupling. If the suction line is
connected to the bottom of the reservoir, the coupling should extend above the
bottom inside the tank. This prevents residual dirt from getting into the
suction line when the tank is cleaned. The seals used on all suction line
connections should be such that they will not deteriorate and leak. A baffle
plate in the reservoir is desirable to separate the suction and return lines.
The plate causes return oil to circulate around the outer wall of the
reservoir for cooling before it re-enters the pump. It also helps provide time
for entrained air to separate from the oil. Baffle plate openings should be
designed so that cascade effects and resultant air entrainment are minimized.
Most reservoirs are vented to the atmosphere through an opening that lets air
leave or enter the space above the oil as the oil level rises or falls. A
filler/breather unit containing an air-filtering element is often used as the
vent. It must be large enough to handle the air flow required to maintain
atmospheric pressure whether the tank is full or empty.
Startup
Before starting, fill the pump with system fluid through the uppermost port.
The housing must be kept full at all times to provide internal lubrication. At
initial startup, it may be necessary to bleed air from the pump out-let to
permit priming and reduce noise. Bleed by loosening an outlet connection until
a solid stream of fluid appears. An air bleed valve for this purpose is
available through your Danfoss representative.
Application Guidance
To ensure optimum pump performance in conjunction with your specific
application, consult your Danfoss representative if your:
- The application requires an indirect drive
- Fluid does not meet the specifications
- Mounting attitude is other than horizontal
- Oil viscosity at operating temperature is not within 13-54cSt
- (70-250 SUS)
- Oil viscosity at startup is more than 220 cSt (1000 SUS)
- Needs require application assistance
Service Information
Refer to powesource.danfoss.com for service
information.
Danfoss Power Solutions, Nordborgvej 81, 6430 Nordborg, Denmark, Tel. +45 74 88 22 22, Fax +45 74 65 25 80 www.danfoss.com, E-mail: info@danfoss.com Support E-mail: industrialpumpsmotorsupport@danfoss.com 2023 Danfoss All Rights Reserved Printed in USA DAM No: BC469985753506en-000101 December 2023.