LOGIC CARTRIDGE VALVE LC50A20E7X/V
Manufacturer: Bosch Rexroth
Material #: R900955409
Model : LC50A20E7X/V
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth LC50A20E7X/V (R900955409) is a high-performance, bidirectional hydraulic cartridge valve designed for reliable switching of oil flow direction. This industrial valve features a spool type AE with hydraulic actuation, ensuring precise control over fluid dynamics within a hydraulic system. The LC50A20E7X/V has been engineered to handle a maximum pressure and flow rate with exceptional efficiency, making it suitable for applications requiring robust performance in challenging conditions.
Equipped with FKM seals, the LC50A20E7X/V is compatible with a wide range of hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, HETG, HEES, HEPG, HFDU, and HFDR. These seals provide resilience against harsh chemicals and high temperatures. The valve's design allows for easy integration into compact block systems due to its standardized cartridge format that fits seamlessly into control blocks as per ISO norms.
The versatility of the LC50A20E7X/V is further enhanced by its capability to be controlled by various pilot control valves for different functions such as pressure regulation, directional control, and flow throttling. The valve's modular design includes a control cover that houses the necessary control bores and can also accommodate additional features like stroke limitation or electrically operated directional controls.
In terms of construction and operation, the LC50A20E7X/V includes an installation kit comprising bushing components and a valve poppet which can come with or without a damping nose depending on application requirements. The way cartridge valves operate based on pressure differences across three key areas (A1, A2, A3), dictating the spool position through the balance of opening and closing forces.
This model is part of Bosch Rexroth's standard series offering different component series (x2,x6,x8), capable of sustaining maximum operating pressures up to several hundred bar while ensuring maximum flow rates in liters per minute. Its robust design allows for directional flow from A to B or B to A without leakage when pressurized correctly. The LC50A20E7X/V stands out as an efficient solution for power section applications where multiple functions are required from a single element within hydraulic systems.
$1,110.00 USD
More are expected on March 31, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as March 31, 2025 when ordered in
This product is eligible for factory repair.
Size 50, bidirectional (A → B, B → A), hydraulically actuated, spool type AE
Industrial hydraulic valve in a high performance range. Reliable switching of the oil flow direction according to hydraulic symbol
Unpacked Weight: 2.950 kg
Valve poppet with or without damping nose 2 area ratios 6 different cracking pressures
2-way cartridge valves are elements that have been designed for a compact block design. The power section with connections A and B is installed into the control block in a receiving hole standardized according to ISO 7368 and closed with a cover. In most cases, the cover is also the connection from the control side of the power section to the pilot control valves.
By control with respective pilot control valves, the power section can be applied for pressure, directional and throttle functions or a combination of these functions. Particularly efficient solutions are realized by adjustment of the size to various flows of the individual ways of an actuator. The application of power sections of elements for multiple functions is very cost-effective.
2-way cartridge valves generally consist of control cover (1) and installation kit (2). The control cover contains the control bores and optionally a stroke limitation function, a hydraulically controlled directional seat valve or a shuttle valve according to the required overall function. Additionally, electrically operated directional spool or seat valves can be installed at a control cover. The installation kit consists of a bushing (3), ring (4) (only up to NG32), valve poppet (5), optionally with damping nose (6) or without damping nose (7) as well as closing spring (8).
The function of 2-way cartridge valves is pressure-dependent. This way, three crucial pressurized areas are realized for the function. A1, A2, A3. The area at valve seat A1 is observed as 100 %. Depending on the version, the annulus area A2 realized by grading is 7 % or 50 % of area A1. The area ratio A1 : A2 is respectively either 14.3 : 1 or 2 : 1. The area A3 is identical to the sum of areas A1 + A2. Due to the different area ratios A1 : A2 and the resulting different annulus areas (A2), the area A3 is one time 107 % and another time 150 % of the area A1 at the seat, which is observed as 100 %.
In general, the following applies:
The areas A1 and A2 are effective in opening direction. The area A3 and the spring are effective in closing direction. The direction of action of the resulting force from the opening and closing forces determines the spool position of the 2-way cartridge valve.
The 2-way cartridge valves can be passed from A to B or from B to A. Pressurization of area A3 by pilot oil discharge from channel B or external pilot oil supply, channel A is blocked without leakage.
Industrial hydraulic valve in a high performance range |
Reliable switching of the oil flow direction according to hydraulic symbol |
Without overlap |
Annulus area B=50 % |
Standard series |
Component series 6X, 2X, 7X |
Maximum flow 25000 l/min |
Size 16 … 160 |
Maximum operating pressure 420 bar |
Data Sheet | Download Data Sheet |
Manual | Download Manual |
Manual | Download Manual |
Manual | Download Manual |
Manual | Download Manual |
Manual | Download Manual |
Spool symbol | Symbol A20E |
Max. pressure | 420 |
Productgroup ID | 9,10,11,12,13,14 |
Type of actuation | with hydraulic actuation |
Size | 50 |
Max. flow | 3500 |
Type of connection | Cartridge valve |
Connection diagram | ISO 7368 |
Number of switching positions | 2 |
Weight | 2.950 |
Seals | FKM |
Hydraulic fluid | HL,HLP,HLPD,HVLP,HVLPD,HETG,HEES,HEPG,HFDU,HFDR |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
|
LC |
/ |
Type |
||
01 |
Cartridge valve |
LC |
Size |
||
02 |
Size 16 |
16 |
Size 25 |
25 |
|
Size 32 |
32 |
|
Size 40 |
40 |
|
Size 50 |
50 |
|
Size 63 |
63 |
|
Size 80 |
80 |
|
Size 100 |
100 |
|
Size 125 |
125 |
|
Size 160 |
160 |
|
Spool design 1) |
||
03 |
A1 : A2 = 2 : 1 (A2 = 50 %) |
A |
A1 : A2 = 14.3 : 1 (A2 = 7 %) |
B |
|
Cracking pressure |
||
04 |
0 bar (without spring) |
00 |
approx. 0.5 bar |
05 |
|
approx. 1 bar |
10 |
|
approx. 2 bar |
20 |
|
approx. 3 bar (NG125 only) |
30 |
|
approx. 4 bar (not NG125) |
40 |
|
Damping |
||
05 |
Valve poppet without damping nose |
E |
Valve poppet with damping nose |
D |
|
Component series |
||
06 |
Component series 70 ... 79 (70 ... 79: unchanged installation and connection dimensions) 2) |
7X |
Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions) 3) |
6X |
|
Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) 4) |
2X |
|
Seal material |
||
07 |
NBR seals |
no code |
FKM seals |
V |
|
Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) |
1) | See "Product description" |
2) | Size 16 ... 63 |
3) | Size 80 ... 100 |
4) | Size 125 ... 160 |
general
Size |
16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | ||
Weight |
kg |
0.25 | 0.5 | 1.1 | 1.9 | 3.9 | 7.2 | 13 | 27 | 44 | 75 | |
Ambient temperature range |
NBR seals |
°C |
-30 … +60 | |||||||||
FKM seals |
°C |
-20 … +60 | ||||||||||
MTTFD values according to EN ISO 13849 1) |
Years |
150 |
1) | For further details, see data sheet 08012 |
hydraulic
Size |
16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | ||
Maximum operating pressure 1) |
Port A |
bar |
315 350 420 |
|||||||||
Port B |
bar |
315 350 420 |
||||||||||
Maximum flow 2) |
l/min |
25000 | ||||||||||
Hydraulic fluid |
see table "Hydraulic fluid" | |||||||||||
Hydraulic fluid temperature range |
NBR seals |
°C |
-30 … +80 | |||||||||
FKM seals |
°C |
-20 … +80 | ||||||||||
Viscosity range |
mm²/s |
2.8 … 500 | ||||||||||
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 3) |
Class 20/18/15 |
1) | dependent on the attached directional valve |
2) | NG-dependent; see characteristic curves |
3) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter. |
Hydraulic fluid |
Classification |
Suitable sealing materials |
Standards |
Data sheet |
|
Mineral oils |
HL, HLP, HLPD, HVLP, HVLPD |
NBR, FKM |
DIN 51524 |
90220 |
|
Bio-degradable 1) |
Insoluble in water |
HETG |
NBR, FKM |
ISO 15380 |
90221 |
HEES |
FKM |
||||
Soluble in water |
HEPG |
FKM |
ISO 15380 |
||
Flame-resistant |
Water-free |
HFDU (glycol base) |
FKM |
ISO 12922 |
90222 |
HFDU (ester base) 1) |
FKM |
||||
Containing water 1) |
HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) |
NBR |
ISO 12922 |
90223 |
|
Important information on hydraulic fluids: For more information and data on the use of other hydraulicfluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). Flame-resistant - containing water: Life cycle as compared to operation with mineral oil HL, HLP 30 … 100%. Maximum hydraulic fluid temperature 60 °C Bio-degradable and flame-resistant: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system. |
1) | Not recommended for corrosion-protected version "J3" (contains zinc) |
Size of the annulus area
Surface in cm2 |
Version |
Size |
|||||||||
16 |
25 |
32 |
40 |
50 |
63 |
80 |
100 |
125 |
160 |
||
A1 |
LC..A.. |
1,89 |
4,26 |
6,79 |
11,1 |
19,63 |
30,02 |
37,9 |
63,6 |
95 |
160,6 |
LC..B.. |
2,66 |
5,73 |
9,51 |
15,55 |
26,42 |
41,28 |
52,8 |
89,1 |
133,7 |
224,8 |
|
A2 |
LC..A.. |
0,95 |
1,89 |
3,39 |
5,52 |
8,64 |
14,0 |
18,84 |
31,4 |
48 |
79,9 |
LC..B.. |
0,18 |
0,43 |
0,67 |
1,07 |
1,85 |
2,90 |
3,94 |
5,9 |
9,3 |
15,7 |
|
A3 |
LC..A.. |
2,84 |
6,16 |
10,18 |
16,62 |
28,27 |
44,2 |
56,74 |
95 |
143 |
240,5 |
LC..B.. |
2,84 |
6,16 |
10,18 |
16,62 |
28,27 |
44,2 |
56,74 |
95 |
143 |
240,5 |
Spool form (damping nose)
Version |
Size |
|||||||||||
16 |
25 |
32 |
40 |
50 |
63 |
80 |
100 |
125 |
160 |
|||
Stroke |
cm |
LC..E.. |
0,9 |
1,17 |
1,4 |
1,7 |
2,1 |
2,3 |
2,4 |
3,0 |
3,8 |
5,0 |
LC..D.. |
0,9 |
1,17 |
1,4 |
1,9 |
2,3 |
2,8 |
3,0 |
3,8 |
4,8 |
6,5 |
||
Pilot volume |
cm3 |
LC..E.. |
2,56 |
7,21 |
14,3 |
28,3 |
59,4 |
102 |
136 |
285 |
544 |
1203 |
LC..D.. |
2,56 |
7,21 |
14,3 |
31,6 |
65,0 |
124 |
170 |
361 |
687 |
1563 |
||
Theoretical pilot flow 1) |
l/min |
LC..E.. |
15,4 |
43,3 |
86 |
170 |
356 |
612 |
816 |
1710 |
3264 |
7218 |
LC..D.. |
15,4 |
43,3 |
86 |
190 |
390 |
744 |
1020 |
2166 |
4122 |
9378 |
1) | Theoretical pilot flow for realization of a switching time of 10 ms |
Notice:
Spools with damping nose are mainly used in applications with stroke limitation and spool position monitoring. Due to the better flow values, we recommend the spool without damping nose by default.
Cracking pressure in bar
Version |
Size |
||||||||||
16 |
25 |
32 |
40 |
50 |
63 |
80 |
100 |
125 |
160 |
||
Direction of flow A to B |
LC..A 00.. |
0,02 |
0,025 |
0,05 |
0,05 |
0,05 |
0,07 |
0,07 |
0,1 |
0,15 |
0,15 |
LC..A 05.. |
0,35 |
0,35 |
0,36 |
0,35 |
0,37 |
0,31 |
0,44 |
0,43 |
0,43 |
0,45 |
|
LC..A 10.. |
0,70 |
0,68 |
0,72 |
0,71 |
0,67 |
0,64 |
0,88 |
0,88 |
0,88 |
– |
|
LC..A 20.. |
2,03 |
2,18 |
2,12 |
2,02 |
2,01 |
2,0 |
1,75 |
1,75 |
1,76 |
1,94 |
|
LC..A 30.. |
– |
– |
– |
– |
– |
– |
– |
– |
2,05 |
– |
|
LC..A 40.. |
3,50 |
3,90 |
3,80 |
4 |
4,11 |
3,8 |
3,13 |
3,04 |
– |
4,42 |
|
LC..B 00.. |
0,014 |
0,02 |
0,035 |
0,035 |
0,035 |
0,05 |
0,05 |
0,07 |
0,1 |
0,1 |
|
LC..B 05.. |
0,25 |
0,26 |
0,26 |
0,25 |
0,28 |
0,23 |
0,31 |
0,31 |
0,31 |
0,32 |
|
LC..B 10.. |
0,49 |
0,50 |
0,51 |
0,51 |
0,48 |
0,47 |
0,63 |
0,63 |
0,62 |
– |
|
LC..B 20.. |
1,44 |
1,62 |
1,52 |
1,44 |
1,5 |
1,5 |
1,26 |
1,25 |
1,25 |
1,4 |
|
LC..B 30.. |
– |
– |
– |
– |
– |
– |
– |
– |
1,45 |
– |
|
LC..B 40.. |
2,48 |
2,90 |
2,70 |
2,86 |
3,05 |
2,8 |
2,25 |
2,17 |
– |
3,35 |
|
Direction of flow B to A |
LC..A 00.. |
0,04 |
0,05 |
0,1 |
0,1 |
0,1 |
0,14 |
0,14 |
0,2 |
0,30 |
0,33 |
LC..A 05.. |
0,69 |
0,78 |
0,72 |
0,7 |
0,84 |
0,68 |
0,88 |
0,88 |
0,86 |
0,91 |
|
LC..A 10.. |
1,38 |
1,53 |
1,42 |
1,43 |
1,47 |
1,37 |
1,77 |
1,78 |
1,73 |
– |
|
LC..A 20.. |
4,05 |
4,91 |
4,25 |
4,06 |
4,57 |
4,33 |
3,53 |
3,54 |
3,50 |
3,9 |
|
LC..A 30.. |
– |
– |
– |
– |
– |
– |
– |
– |
4,0 |
– |
|
LC..A 40.. |
6,96 |
8,74 |
7,6 |
8,05 |
9,34 |
8,15 |
6,3 |
6,2 |
– |
8,76 |
|
LC..B 00.. |
0,24 |
0,25 |
0,5 |
0,5 |
0,5 |
0,8 |
0,7 |
1,0 |
1,5 |
1,5 |
|
LC..B 05.. |
3,69 |
3,40 |
3,64 |
3,64 |
3,95 |
3,27 |
4,2 |
4,6 |
4,4 |
4,6 |
|
LC..B 10.. |
7,43 |
6,69 |
7,24 |
7,37 |
6,88 |
6,62 |
8,4 |
9,4 |
8,9 |
– |
|
LC..B 20.. |
21,3 |
21,5 |
21,6 |
20,9 |
21,4 |
20,9 |
16,9 |
18,7 |
17,9 |
20 |
|
LC..B 30.. |
– |
– |
– |
– |
– |
– |
– |
– |
20,7 |
– |
|
LC..B 40.. |
36,6 |
38,3 |
38,6 |
41,5 |
43,6 |
39,4 |
30,2 |
32,5 |
– |
44,7 |
For applications outside these parameters, please consult us!
(simulated with HLP46, ϑoil = 40±5 °C)
Without damping nose "E", A → B
Without damping nose "E", B → A
With damping nose “D”, A → B
With damping nose "D", B → A
Notice:
The specified characteristic curves were simulated with 100% spool stroke and an aligned socket (see sketch under recommended socket alignment). The simulation results were validated by measurement results. The basis was an installation geometry with ØD3* (see installation under dimensions) and a simulation model according to ISO 4411/2008-10-01.
Recommended socket alignment:
Size 16...32
Bore on bore
Size 40 ... 160
Bar on bore
Version "E" |
Version “D” |
||
Area ratio A1 : A2 = 2 : 1 Version "…A.E…" |
Area ratio A1 : A2 = 14,3 : 1 Version "…B.E…" |
Area ratio A1 : A2 = 2 : 1 Version "…A.D…" |
Area ratio A1 : A2 = 14,3 : 1 Version "…B.D…" |
Additional functions with special numbers see "Information".
Installation bore according to ISO 7368
Dimensions in mm
1 |
Depth of fit |
2 |
Port B may be positioned around the central axis of port A. However, it must be observed that the mounting bores and the control bores are not damaged. |
NG |
16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | |
ØD1H7 |
mm |
32 | 45 | 60 | 75 | 90 | 120 | 145 | 180 | 225 | 300 |
ØD2 |
mm |
16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | 150 1) | 200 1) |
ØD3 |
mm |
16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 |
(ØD3*) 2) |
mm |
25 | 32 | 40 | 50 | 63 | 80 | 100 | 125 | 160 | 250 |
ØD4H7 |
mm |
25 | 34 | 45 | 55 | 68 | 90 | 110 | 135 | 200 | 270 |
H1 |
mm |
42.5 | 57 | 68.5 | 84.5 | 97.5 | 127 | 170.5 | 205.5 | 255 | 368 |
H2 |
mm |
56 | 72 | 85 | 105 | 122 | 155 | 205 | 245 | 300 | 425 |
mm |
+ 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.15 | + 0.15 | |
H3 |
mm |
43 | 58 | 70 | 87 | 100 | 130 | 175 | 210 | 257 | 370 |
mm |
+ 0.2 | + 0.2 | + 0.2 | + 0.3 | + 0.3 | + 0.3 | + 0.4 | + 0.4 | + 0.5 | + 0.5 | |
H5 |
mm |
11 | 12 | 13 | 15 | 17 | 20 | 25 | 29 | 31 | 45 |
H6 |
mm |
2 | 2.5 | 2.5 | 3 | 3 | 4 | 5 | 5 | 7 | 8 |
mm |
- | - | - | - | - | - | - | - | ± 0.5 | ± 0.5 | |
H7 |
mm |
20 | 30 | 30 | 30 | 35 | 40 | 40 | 50 | 40 | 50 |
H8 |
mm |
2 | 2.5 | 2.5 | 3 | 4 | 4 | 5 | 5 | 5.5 | 5.5 |
mm |
- | - | - | - | - | - | - | - | ± 0.2 | ± 0.2 | |
W |
mm |
0.05 | 0.05 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
Ro 1) |
mm |
2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 6.3 |
Ru 1) |
mm |
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
1) | Maximum dimension |
2) | Due to the use of a bore with ØD3*, port B protrudes over the upper limit of the area intended in ISO 7368. This is, however, possible due to the sealing concept and reduces the pressure loss during flow through the valve. Thus, we recommend a bore with ØD3*. |
Additional functions with special numbers (upon request)
Symbol |
Type (examples) |
Size |
Description / special characteristic |
LC . A..D7X/-004 |
16 ... 50 |
With piston sealing (leakage-free) Larger spring installation space Special cover or intermediate cover "D19" required NG16 … 40: only with cracking pressure approx. 4 bar NG50 and 63: cracking pressure approx. 2 bar or higher; alternatively "without spring" |
|
LC . A..E7X/-004 |
16 ... 50 |
||
LC . B..E7X/-004 |
16 ... 63 |
||
LC . A..D6X/-104 |
80, 100 |
With piston sealing (leakage-free) as SO-004, however, no special cover required |
|
LC . A..E6X/-104 |
80, 100 |
||
LC . B..E6X/-104 |
80, 100 |
||
LC . A..D7X/-104 |
40 … 63 |
||
LC . A..E7X/-104 |
40 … 63 |
||
LC . A..E2X/-104 |
125, 160 |
||
LC . A05D6X/-054 |
16 |
Pulling logic with open zero position Special cover (e.g. "D54") required |
|
LC . A20D6X/-054 |
25 ... 32 |
||
LC . A05E6X/-054 |
16 |
||
LC . A..E6X/-054 |
25 ... 80 |
||
LC ./100 A20E6X/-054 |
32, 100 |
||
LC . B05E6X/-054 |
12 |
||
LC . B20E6X/-054 |
25 |
||
LC . A20D7X/-054 |
50 |
||
LC . A40D7X/-054 |
63 |
||
LC . A20E7X/-054 |
50 |
||
LC . A..E7X/-054 |
63 |
||
LC …7X/-135 |
16 … 40 |
Larger spool clearance |
|
LC …7X/-146 |
16 … 40 |
Larger spool clearance With piston sealing (leakage-free) Larger spring installation space Special cover or intermediate cover "D19" required |
|
LC . A..D7X/-R10 |
16 |
As standard, however, larger bushing outer diameter D1 and D4 1 mm |
|
LC . A20D7X/-R10 |
25 |
||
LC 1. A40E7X/-R10 |
16, 32 |
||
LC . A..E7X/-R10 |
25, 63 |
||
LC . A10E7X/-R10 |
40 |
||
LC . A05E7X/-R10 |
50 |
||
LC . B..D7X/-R10 |
25 |
||
LC . B10D7X/-R10 |
32 |
||
LC . B40E7X/-R10 |
25, 40 |
||
LC . B..E7X/-R10 |
50, 63 |
||
LC . A..D7X/-R20 |
16 |
As standard, however, larger bushing outer diameter D1 and D4 2 mm |
|
LC . A20D7X/-R20 |
25 |
||
LC 1. A40E7X/-R20 |
16, 32 |
||
LC . A..E7X/-R20 |
25, 63 |
||
LC . A10E7X/-R20 |
40 |
||
LC . A05E7X/-R20 |
50 |
||
LC . B..D7X/-R20 |
25 |
||
LC . B10D7X/-R20 |
32 |
||
LC . B40E7X/-R20 |
25, 40 |
||
LC . B..E7X/-R20 |
50, 63 |
||
LC . XAB00E-7X/ |
16 … 63 |
Blind element without spool Channel A - B connected For use with available LFA cover or in connection with a cover "LFA . D-7X/FX99" |
|
LC . XAF00E-7X/ |
16 … 63 |
Blind element without spool Channel A - F connected Channel B closed For use with available LFA cover or in connection with a cover "LFA . D-7X/FX99" |
|
LC . X00E-7X/ |
16 … 63 |
Blind element without spool All channels blocked For use with available LFA cover or in connection with a cover "LFA . D-7X/FX99" |
Related Products
R901242463
$1,307.00 USD
R900507099
$1,246.00 USD
R900937466
$2,306.00 USD
R900617099
$784.00 USD
R901276773
$1,794.00 USD