HY20L Series
HY20L Series Pumps
Group 2 Low Noise Pump
5 cc/rev to 22.5 cc/rev
(0.3 cu.in/rev to 1.37 cu.in/rev)
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HY20L Series
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Contents
General data, technical features, working conditions
Page 2
Filtration, formulae, flow measurement & noise
Page 3
Model coding
Page 4
Installation data, flange port types
Page 5
Threaded port types, drive shafts
Page 6
Mounting flanges
Page 7
Rear covers
Page 8
Rear cover valves
Page 9/10
Multiple pumps
Page 11
HY20L gear pumps are low noise units with phased gears.
Available as Group 2 giving displacements from 5cm³/rev to 22.5cm³/rev (from 0.30 cu.in/rev to 1.37 cu.in/rev).
All pumps are available also as multiple units.
With all sizes of pumps there are options of shafts, flanges and ports as per European, German and SAE standards.
- High volumetric efficiency by innovative design and accurate control of machining tolerances
- Axial compensation is achieved by the use floating bushes that allow high volumetric efficiency throughout
the pressure range
- Plain bearings ensure high pressure capability
- 12 teeth integral gear and shaft
- Extruded aluminium body
- High strength end cover and flange
- Double shaft seals
- Nitrile seals as standard and viton seals in high temperature applications
All pumps are tested after assembly and run in to ensure the high standard.
GENERAL
TECHNICAL FEATURES
WORKING CONDITIONS
- Inlet pressure pump .................................................................................0.7 to 2.5 bar (abs)
10 to 35 psi (abs)
- Minimum viscosity ...................................................................................12mm³/sec
- Max starting viscosity ..............................................................................800mm²/sec
- Viscosity from ...........................................................................................17 - 65mm²/sec
- Oil temperature ........................................................................................-15 to +85˚C
- Hydraulic fluid ..........................................................................................mineral oil
For any other information not listed please contact your Hydreco representative.
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HY20L Series
FILTRATION RECOMMENDATION
COMMON FORMULAS
NOISE MEASUREMENT
PRESSURE RIPPLE
Working Pressure > 200 bar/2900 psi < 200 bar/2900 psi
Contamination class NAS 1638 9 10
Contamination class ISO 4406 18/15 19/16
Achieved with filter ß
x
=75 15µm 25µm
C = Input torque
=
q . Δp
62.8 . η
m
(Nm) P = Input Power
=
q . n . Δp 10
-3
600 η
m
(kW) O = Outlet flow =
q . n . η
v
1000
(I/min)
Δp = Working pressure (bar) q = Displacement (cm³/rev) n = Speed (min
-1
) η
m =
Mechanical eff. (0.92) η
v =
Volumentric eff. (0.95)
Test Conditions:
Hydraulic Mineral Oil: ISO VG 32
Test Temperature: 40 0C
Viscosity: 30 cSt
Speed: 1500 rpm
Operating Pressure: 3 to 250 bar
Background Noise: 32 dB (A)
HY20L - 19cc/rev Standard - 19cc/rev
HY20L - 19cc/rev Standard - 19cc/rev
HY20L Series
Page 4 www.hydreco.com
Type Displacement
5 5 cm
3
/rev. 0.30 cu.in/rev
8 8 cm
3
/rev. 0.49 cu.in/rev
11 10.9 cm
3
/rev. 0.66 cu.in/rev
14 13.9 cm
3
/rev. 0.85 cu.in/rev
16 16 cm
3
/rev. 0.98 cu.in/rev
19 19 cm
3
/rev. 1.16 cu.in/rev
22.5 22.5 cm
3
/rev. 1.37 cu.in/rev
Rotation Code
Clockwise C
Anti-Clockwise A
Ports Code
Flanged ports European standard P
Flanged ports German standard B
SAE Threaded ports (ODT) R
BSP Threaded ports G
Mounting Flange Code
European standard P1
German standard Ø80
B1
German standard Ø52
B2 - B3
SAE A 2 bolts S2
Seal Code
Buna standard N
Viton V
Drive Shaft Code
Tang drive for electric motors 03
Tapered 1:5 25
Tapered shaft 1:8 28
SAE A splined 9 T 52
SAE A splined 11 T 54
SAE A Parallel shaft Ø15,87
82
SAE A Parallel shaft Ø19,05
85
Valve in the Cover Code
Adjustable main relief valve VS
Fixed setting main relief VSF
As VS with external discharge VSE
As VSF with external discharge VSEF
Flow regulator with excess flow to tank VR
Priority flow divider with excess flow to 2nd actuator VP
As VR with main relief valve VRS
As VP with main relief valve VPS
Priority flow divider with Load-sensing VPL
Like VPL with dynamic signal VPD
Model Displacement Ports Shaft Flange Seals Valves Flow
RV
Setting
Rotation
HY20L
For rear cover
valves only
MODEL CODING
Include both displacements for double pumps e.g. 11/8
Volume
Quantities
Only
HY20L Series
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Code P
Code B
Type 5 8 11 14 16 19 22,5*
Displacement
cm³/rev
cu.in./rev
5
0.30
8
0.49
10.9
0.66
13.9
0.85
16
0.98
19
1.16
22.5
1.37
Dimension A
mm
in
90.1
3.51
95.8
3.73
106.5
4.15
110
4.29
117
4.56
123.4
4.81
128.8
5.02
Dimension C
mm
in
42.5
1.65
50.7
1.97
52.5
2.04
56
2.18
59.2
2.30
61.9
2.41
Working pressure p1
bar
psi
220
3140
210
3000
190
2715
180
2600
Intermittent pressure p2
bar
psi
250
3600
230
3300
210
3000
200
2900
Peak pressure p3
bar
psi
275
3950
250
3600
230
3300
220
3140
Max speed at p2 rpm
4000 3500 3000 2750
Min speed at p1 rpm
600 500 400
Weight
rpm
lbs
2.1
4.6
2.25
4.9
2.5
5.5
2.65
5.8
2.8
6.1
2.95
6.4
3.1
6.8
Type Inlet Outlet
ØD ØA
d e
ØD ØA
d e
5 and 8
13
(0.51”)
30
(1.19”)
M6
13
(0.51”)
13
(0.51”)
30
(1.19”)
M6
13
(0.51”)
From 11 to 22,5
20
(0.78”)
40
(1.56”)
M8
Type Inlet Outlet
ØD ØA
d e
ØD ØA
d e
From 5 to 22,5
20
(0.78”)
40
(1.56”)
M6
13
(0.51”)
15
(0.59”)
35
(1.38”)
M6
13
(0.51”)
INSTALLATION DATA
PORT TYPES
M6 tightening torque 10 Nm - M8 tightening torque 22 Nm
HY20L Series
Page 6 www.hydreco.com
Code R
Code G
Code 03 Code 25 Code 28
Type Inlet Outlet
A B C Y K A B C Y K
From 4,5 to 26
1-1/16
UNF
(SAE 12)
16
(0.62”)
20
(0.78”)
41
(1.59”)
3,3
(0.12”)
7-8/14
UNF
(SAE 10)
14
(0.54”)
13
(0.50”)
34
(1.32”)
2,5
(0.09”)
Type Inlet Outlet
A B C Y K A B C Y K
From 4,5 to 26
3/4”
BSP
16
(0.62”)
20
(0.78”)
41
(1.59”)
3,3
(0.12”)
1/2”
BSP
14
(0.54”)
13
(0.50”)
34
(1.32”)
2,5
(0.09”)
SAE Threaded (ODT)
DRIVE SHAFTS
Code 52
Code 82
Code 54
Code 85
Tang drive for
electric motors
Available for
volume quantities
SAE A
9T 16/32 DP
SAE A
11T 16/32 DP
Available for
volume quantities
Available for
volume quantities
Available for
volume quantities
Tapered 1:5 Tapered 1:8
Max torque 70 Nm
Max torque 80 Nm
Max torque 65 Nm
Max torque 140 Nm
Max torque 120 Nm
Max torque 100 Nm
Woodruff key (3x6,5)
Max torque 100 Nm
Woodruff key (3,165x6,5)
HY20L Series
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Code P1
Code B2
Code S2
Code B1
Code B3
MOUNTING FLANGES
With Shaft Code 28
With Shaft Code 03
With Shaft Code 52, 54, 82, 85
With Shaft Code 25
With Shaft Code 03
HY20L Series
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REAR COVERS
REAR COVERS WITH RELIEF VALVES
Code PD1
Code VS
Code VSE
With main relief valve
with internal discharge
With main relief valve
with external discharge
D
M 18 x 1,5
3/4-16 UNF-2B(SAE 8)
HY20L Series
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REAR COVER WITH PRIORITY FLOW PORT
REAR COVER WITH PRIORITY FLOW PORT AND RELIEF VALVE
INSTALLATION DATA
Code VP
Code VPS
Both Priority and Bypass ports can be loaded at the same time
Priority flow is constant regardless of pump speed, bypass flow varies depending on pump speed
Priority flow if controlled by an orifice (not adjustable) as per the table below
Calibrated Orifice
Ød(mm)
Flow Rate
1/min ±10%
1,5 2.5
2 4
2,4 6
2,8 8
3,1 10
3,5 12,5
4 16
4,4 20
4,9 25
A B
G 3/8 G 1/2
9/16-18 UNF-2B (SAE 6) 3/4-16 UNF-2B (SAE 8)
HY20L Series
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REAR COVER WITH LOAD SENSING PRIORITY VALVE WITH MAIN RELIEF VALVE
REAR COVER WITH LOAD SENSING PRIORITY VALVE WITH DYNAMIC SIGNAL AND MAIN RELIEF VALVE
Code VPL
Code VPD
INSTALLATION DATA
LOAD SENSE PORTING
LS = Signal load sensing
CF = Priority flow
EF = Excess flow
Priority Flow Rate
1/min ±10% gpm ±10%
8 2.10
10.5 2.61
12.5 3.78
16 4.17
20 5.22
A B C
G 3/8 G 1/2 G 1/4
9/16-18 UNF-2B (SAE 6) 3/4-16 UNF-2B (SAE 8) 7/16 UNF
HY20L Series
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MULTIPLE GEAR PUMPS
The HY20L pumps can be easily transformed into multiple units. All drive shafts are pre-arranged and have a
splined end DIN 5482. The first unit must always be the same size or bigger than following units. The features
and performances are the same of the corresponding single units: only in the case of simultaneous operating you
have to verify that the inlet torque is lower than the max. transmissible by the drive shaft.
Type 5 8 11 14 16 19 22,5*
Dimension A (flanges B2 - B3)
mm
in
16,5
0,65
Dimension A (flanges P1 - B1)
mm
in
19
0,75
Dimension B
mm
in
23,5
0,92
31,7
1,25
33,5
1,32
37
1,46
40,2
1,58
42,9
1,69
Dimension B
mm
in
47,1
1,65
52,8
2,10
63,5
2,50
67
2,64
74
2,91
80,4
3,16
85,8
3,38
HY20L Series
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CONTACT INFORMATION
EMEA
GErMANy Hydreco Hydraulics GmbH, Straelen (NRW) Tel: +49 2834 94303-41 Fax: +49 2834 94303-64 info-de@hydreco.com
ITAly Hydreco Hydraulics Italia Srl, Vignola (MO) Tel: +39 059-7700411 Fax: +39 059-7700425 sales-it@hydreco.com
NOrwAy HydrecoHydraulicsNorwayAS,Skjeen Tel:+4722909410 post-no@hydreco.com
UK Hydreco Hydraulics Ltd, Poole, Dorset Tel: +44 (0) 1202 627500 Fax: +44 (0) 1202 627555 info-uk@hydreco.com
AMErICAS
USA HydrecoInc,Charloe(NC) Tel:+1704295-7575 Fax:+1704295-7574 sales-us@hydreco.com
lATIN AMErICA Tel: +1 704 572-6266 sales-es@hydreco.com
APAC
AUSTrAlIA Hydreco Hydraulics Pty Ltd, Seven Hills (NSW) Tel: +61 2 9838 6800 Fax: +61 2 9838 6899 sales-au@hydreco.com
AUSTrAlIA Hydreco Hydraulics Pty Ltd, Smeaton Grange (NSW) Tel: +61 2 9838 6849 au-smeatongrange@hydreco.com
AUSTrAlIA Hydreco Hoist & Winch Sales (WA) Pty Ltd, Bassendean (WA) Tel: +61 8 9377 2211 Fax: +61 8 9377 2223 au-hhw@hydreco.com
ChINA Hydreco Hydraulics (Xiamen) Co. Ltd, Xiamen, (Fujian) Tel: +86 0592 2237 901 Fax: +86 0592 2237 052 sales-cn@hydreco.com
INdIA Hydreco Hydraulics India Private Ltd, Bangalore Tel: +91 80 42713100 Fax: +91 80 42713111 sales-in@hydreco.com