Артикул: RX7253
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2-way cartridge valves, directional functions LC (high-pressure)
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Description
- High-pressure series
- Size 16 … 100
- Component series 6X, 7X
- Maximum operating pressure 450 bar
- Maximum flow 13000 l/min
- Size 16 … 100
- Component series 6X, 7X
Features
- Cartridge valves for directional function
Product description
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 simultaneously 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 pressuredependent. This way, three crucial pressurized areas A1, A2, A3 are realized for the function. The area at the valve seat A1 is considered 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. In case of pressurization of area A3 by pilot oil discharge from channel B or external pilot oil supply, channel A is blocked in a leakage-free manner.
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | |
| LC | / | 450 | P |
| 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 | |
| Spool design | ||
| 03 | A1 : A2 = 2 : 1 (A2 = 50 %) 1) | A |
| A1 : A2 = 14.3 : 1 (A2 = 7 %) 1) | B | |
| Cracking pressure | ||
| 04 | 0 bar (without spring) | 00 |
| approx. 0.5 bar | 05 | |
| approx. 1 bar | 10 | |
| approx. 2 bar | 20 | |
| approx. 4 bar | 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 | |
| Series | ||
| 07 | High-pressure series | 450 |
| Seal material | ||
| 08 | H-ECOPUR | P |
| Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) | ||
| 1) see switching symbols | |
| 2) Component series 7X for sizes 16...63 | |
| 3) Component series 6X for sizes 80 and 100 |
Technical data
general
| Size | 16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | |
| Weight | kg | 0.25 | 0.5 | 1.1 | 1.9 | 3.9 | 7.2 | 13 | 27 |
| Ambient temperature range | °C | -20 … +80 | |||||||
| 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 | ||
| Maximum operating pressure 1) | Anschluss A | bar | 315 350 450 | |||||||
| Port B | bar | 315 350 450 | ||||||||
| Maximum flow 2) | l/min | 13000 | ||||||||
| Hydraulic fluid | see table below | |||||||||
| Hydraulic fluid temperature range | °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 according to ISO 4406 (c) | |||||||||
| 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 | H-ECOPUR | DIN 51524 | 90220 | |
| Bio-degradable | Insoluble in water | HETG | H-ECOPUR | ISO 15380 | 90221 |
| HEES | H-ECOPUR | ||||
| Flame-resistant | Water-free | HFDU (glycol base) | H-ECOPUR | ISO 12922 | 90222 |
| HFDU (ester base) | H-ECOPUR | ||||
| Important information on hydraulic fluids:
Bio-degradable and flame-resistant: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system. | |||||
| Size of the annulus area | |||||||||
| Surface in cm2 | Version | Size | |||||||
| 16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | ||
| A1 | LC..A.. | 1,89 | 4,27 | 6,79 | 11,1 | 19,63 | 30,19 | 37,9 | 63,6 |
| LC..B.. | 2,66 | 5,73 | 9,51 | 15,55 | 26,42 | 41,28 | 52,8 | 89,1 | |
| A2 | LC..A.. | 0,95 | 1,89 | 3,39 | 5,52 | 8,64 | 13,99 | 18,84 | 31,4 |
| LC..B.. | 0,18 | 0,43 | 0,67 | 1,07 | 1,85 | 2,90 | 3,94 | 5,9 | |
| A3 | LC..A.. | 2,84 | 6,16 | 10,18 | 16,62 | 28,27 | 44,18 | 56,74 | 95 |
| LC..B.. | 2,84 | 6,16 | 10,18 | 16,62 | 28,27 | 44,18 | 56,74 | 95 | |
| Spool form (damping nose) | ||||||||||
| Version | Size | |||||||||
| 16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | |||
| Stroke | cm | LC..E.. | 0,9 | 1,17 | 1,4 | 1,7 | 2,1 | 2,3 | 2,4 | 3,0 |
| LC..D.. | 0,9 | 1,17 | 1,4 | 1,9 | 2,3 | 2,8 | 3,0 | 3,8 | ||
| Pilot volume | cm3 | LC..E.. | 2,56 | 7,21 | 14,3 | 28,3 | 59,4 | 102 | 136 | 285 |
| LC..D.. | 2,56 | 7,21 | 14,3 | 31,6 | 65,0 | 124 | 170 | 361 | ||
| Theoretical pilot flow 1) | l/min | LC..E.. | 15,4 | 43,3 | 86 | 170 | 356 | 612 | 816 | 1710 |
| LC..D.. | 15,4 | 43,3 | 86 | 190 | 390 | 744 | 1020 | 2166 | ||
| 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 | ||
| 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 |
| LC..A 05.. | 0,35 | 0,35 | 0,36 | 0,35 | 0,37 | 0,31 | 0,44 | 0,43 | |
| LC..A 10.. | 0,70 | 0,68 | 0,72 | 0,71 | 0,67 | 0,64 | 0,88 | 0,88 | |
| LC..A 20.. | 2,03 | 2,18 | 2,12 | 2,02 | 2,01 | 2,0 | 1,75 | 1,75 | |
| LC..A 30.. | – | – | – | – | – | – | – | – | |
| LC..A 40.. | 3,50 | 3,90 | 3,80 | 4 | 4,11 | 3,8 | 3,13 | 3,04 | |
| LC..B 00.. | 0,014 | 0,02 | 0,035 | 0,035 | 0,035 | 0,05 | 0,05 | 0,07 | |
| LC..B 05.. | 0,25 | 0,26 | 0,26 | 0,25 | 0,28 | 0,23 | 0,31 | 0,31 | |
| LC..B 10.. | 0,49 | 0,50 | 0,51 | 0,51 | 0,48 | 0,47 | 0,63 | 0,63 | |
| LC..B 20.. | 1,44 | 1,62 | 1,52 | 1,44 | 1,5 | 1,5 | 1,26 | 1,25 | |
| LC..B 30.. | – | – | – | – | – | – | – | – | |
| LC..B 40.. | 2,48 | 2,90 | 2,70 | 2,86 | 3,05 | 2,8 | 2,25 | 2,17 | |
| 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 |
| LC..A 05.. | 0,69 | 0,78 | 0,72 | 0,7 | 0,84 | 0,68 | 0,88 | 0,88 | |
| LC..A 10.. | 1,38 | 1,53 | 1,42 | 1,43 | 1,47 | 1,37 | 1,77 | 1,78 | |
| LC..A 20.. | 4,05 | 4,91 | 4,25 | 4,06 | 4,57 | 4,33 | 3,53 | 3,54 | |
| LC..A 30.. | – | – | – | – | – | – | – | – | |
| LC..A 40.. | 6,96 | 8,74 | 7,6 | 8,05 | 9,34 | 8,15 | 6,3 | 6,2 | |
| LC..B 00.. | 0,24 | 0,25 | 0,5 | 0,5 | 0,5 | 0,8 | 0,7 | 1,0 | |
| LC..B 05.. | 3,69 | 3,40 | 3,64 | 3,64 | 3,95 | 3,27 | 4,2 | 4,6 | |
| LC..B 10.. | 7,43 | 6,69 | 7,24 | 7,37 | 6,88 | 6,62 | 8,4 | 9,4 | |
| LC..B 20.. | 21,3 | 21,5 | 21,6 | 20,9 | 21,4 | 20,9 | 16,9 | 18,7 | |
| LC..B 30.. | – | – | – | – | – | – | – | – | |
| LC..B 40.. | 36,6 | 38,3 | 38,6 | 41,5 | 43,6 | 39,4 | 30,2 | 32,5 | |
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
(simulated with HLP46, ϑoil = 40±5 °C)
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:
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.
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.
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.
Symbols/Circuit diagrams
| 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…" |
Dimensions
Installation bore according to ISO 7368
Dimensions in mm
 |
| Required surface quality of the valve contact surface |
| 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 | |
| ØD1H7 | mm | 32 | 45 | 60 | 75 | 90 | 120 | 145 | 180 |
| ØD2 | mm | 16 | 25 | 32 | 40 | 50 | 63 | 80 | 100 |
| ØD3 1) | mm | 16 25 | 25 32 | 32 40 | 40 50 | 50 63 | 63 80 | 80 100 | 100 125 |
| ØD4H7 | 25 | 34 | 45 | 55 | 68 | 90 | 110 | 135 | |
| H1 | mm | 42.5 | 57 | 68.5 | 84.5 | 97.5 | 127 | 170.5 | 205.5 |
| H2 | mm | 56 | 72 | 85 | 105 | 122 | 155 | 205 | 245 |
| mm | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | + 0.1 | |
| H3 | mm | 43 | 58 | 70 | 87 | 100 | 130 | 175 | 210 |
| mm | + 0.2 | + 0.2 | + 0.2 | + 0.3 | + 0.3 | + 0.3 | + 0.4 | + 0.4 | |
| H5 | mm | 11 | 12 | 13 | 15 | 17 | 20 | 25 | 29 |
| H6 | mm | 2 | 2.5 | 2.5 | 3 | 3 | 4 | 5 | 5 |
| H7 | mm | 20 | 30 | 30 | 30 | 35 | 40 | 40 | 50 |
| H8 | mm | 2 | 2.5 | 2.5 | 3 | 4 | 4 | 5 | 5 |
| W | mm | 0.05 | 0.05 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Ro 2) | mm | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 |
| Ru 2) | mm | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1) | 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*. |
| 2) | Maximum dimension |
Downloads
 | 2-way cartridge valves, pressure and directional functions Data Sheet | RE21030 | 2017-07-01 | English | PDF | 2.4MB Product Groups: Logic elements - directional function, Logic elements - pressure function Type LC (cartridge valves), Type LFA (control cover) |
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