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BOSCH REXROTH
R900912561


$514.00 USD
  • BOSCH REXROTH
  • Material:R900912561
  • Model:LC25DR40E7X/

Due to extremely high demand, please call 920-337-0234 for availability

***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 LC25DR40E7X/ (R900912561) is a high-performance, hydraulically actuated industrial hydraulic valve designed for reliable pressure reduction to a preset value. This model features a spool valve with a pilot-operated mechanism and a spool symbol B A, indicating its functionality for directing flow from port B to port A. With a maximum pressure rating suitable for demanding applications, the LC25DR40E7X/ is classified under Productgroup ID and includes multiple ports of Size B. This valve boasts an impressive maximum flow rate and utilizes a cartridge valve type of connection that conforms to the ISO standard. The connection diagram adheres to ISO specifications, ensuring compatibility with standardized systems. The number of switching positions and weight of the valve are optimized for its size category. Equipped with NBR seals, the LC25DR40E7X/ is compatible with various hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, and HFC. Its way cartridge valves for pressure functions are designed as pilot-operated valves in both seat or spool designs. The power section is crafted as a cartridge valve that fits into receiving holes standardized according to DIN ISO standards. The integrated pilot control valve enables manual or electrically proportional pressure adjustment and can be installed on the control cover as per DIN standards. By combining these cartridge valves with different control covers, various pressure functions can be achieved. For its pressure reducing function, the valve remains open in its rest position. The design ensures no effective areas at port B, making it efficient in operation. When the set pressure is reached, the spool closes to reduce pressure at port A according to preset characteristics. Overall, the Bosch Rexroth LC25DR40E7X/ (R900912561) offers robust performance for industrial applications requiring precise pressure reduction capabilities within hydraulic systems.


Size 25, B → A, hydraulically actuated

Industrial hydraulic valve in a high performance range. Reliable pressure reduction to setting value.

Unpacked Weight: 0.46 kg

General

2-way cartridge valves for pressure functions are pilot-operated valves in seat or spool design. The power section designed as cartridge valve (1) is installed into a receiving hole standardized according to DIN ISO 7368 and closed with a control cover (2).

The pilot control valve (4) for manual or electrically proportional pressure adjustment is integrated into the control cover (2) or is installed on the control cover (2) as pilot valve with mounting dimensions according to DIN 24 340.

By combination of cartridge valves with the control covers, different pressure functions can be realized. .

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

Pressure reducing function

Rest position open

The cartridge valve for the pressure reducing function is designed as spool valve without area difference (no effective areas at port B).

As pilot control valve, identical cover types as for the pressure relief function are applied (type LFA..DB...).

The effective pressure at port A is directed via the pilot oil supply orifice to the spring side of the spool. Under the performance limit and the pressure set at the pilot control valve, the spool is pressure-compensated and retained in open position by the spring force to enable free flow from port B to port A.

On reaching the set pressure, the spool is closed and the pressure at port A is reduced according to the pressure-flow characteristics.

Spool valve
Pilot-operated
Spool symbolB → A
Max. pressure315
Productgroup ID9,10,11,12,13,14
Number of ports2
Type of actuationwith hydraulic actuation
Size25
Max. flow450
Type of connectionCartridge valve
Connection diagramISO 7368-08-3-1-16
Number of switching positions2
Weight0.46
SealsNBR
Hydraulic fluidHL,HLP,HLPD,HVLP,HVLPD,HFC

Type

01

Cartridge valve

LC

Size

02

NG 16

16

NG 25

25

NG 32

32

NG 40

40

NG 50

50

NG 63

63

Version

03

Pressure relief function

DR

Cracking pressure

04

Cracking pressure 0 bar (without spring)

00

Cracking pressure approx. 2 bar

20

Cracking pressure approx. 3 bar

1)

30

Cracking pressure approx. 4 bar

40

Cracking pressure approx. 5 bar (NG16, 25 and 32 only)

50

Cracking pressure approx. 8 bar

2)

80

Damping

05

Piston without precision grooves

E

Component series

06

Component series 70 ... 79 (70 ... 79: unchanged installation and connection dimensions)

7X

Seal material

07

NBR seals

no code

FKM seals

V

01

02

03

04

05

06

07

LC

DR

E

7X

/

Additional preferred types and standard units are specified in the EPS (standard price list).

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oil

HL, HLP

FKM, NBR

DIN 51524

Bio-degradable

Insoluble in water

HEES (synthetic esters)

FKM

VDMA 24568

HETG (rape seed oil)

FKM, NBR

Soluble in water

HEPG (polyglycols)

FKM

VDMA 24568

Other hydraulic fluids on request

hydraulic

Size

16 25 32 40 50 63

Maximum operating pressure

Port A

bar

315

Port B

bar

315

Maximum flow

LC..DR20.../..

l/min

100 200 300 750 1000 1600

LC..DR40.../..

l/min

150 300 450 1000 1300 2000

Hydraulic fluid

Mineral oil (HL, HLP) according to DIN 51524; fast biodegradable hydraulic fluids according to VDMA 24568 ; HETG (rape seed oil); HEPG (polyglycols); HEES (synthetic esters), other hydraulic fluids on request

Hydraulic fluid temperature range

NBR seals

°C

-30 … +80

FKM seals

°C

-20 … +80

Viscosity range

mm²/s

2.8 … 380

Maximum admissible degree of contamination of the hydraulic fluid 1)

Class 20/18/15 according to ISO 4406 (c)
1) 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.

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

LC 16 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 16 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 16 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 16 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

(measured with HLP46, ϑOil = 40 ±5 °C)

LC 25 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 25 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 25 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 25 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

(measured with HLP46, ϑOil = 40 ±5 °C)

LC 32 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 32 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 32 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 32 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

(measured with HLP46, ϑOil = 40 ±5 °C)

LC 40 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 40 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 40 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 40 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

(measured with HLP46, ϑOil = 40 ±5 °C)

LC 50 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 50 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 50 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 50 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

(measured with HLP46, ϑOil = 40 ±5 °C)

LC 63 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 63 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 63 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

LC 63 DR…

technical illustration-R900912561-Size 25, B → A, hydraulically actuated
technical illustration-R900912561-Size 25, B → A, hydraulically actuated

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…"

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

Installation bore and connection dimensions according to ISO 7368

Dimensions in mm

technical illustration-R900912561-Size 25, B → A, hydraulically actuated

1

Depth of fit

2

Control dimension

3

If a different diameter is used for port B than ØD3 or (ØD3*), the distance from the cover support surface to the bore center must be calculated.

4

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.

7

At Ø ≤45 mm → Fitting H8 admissible

NG

ØD1

ØD2

ØD3/(ØD3*)

ØD4

ØD5

ØD6 1)

ØD7

H1/(H1*)

H2

H3

H4

H5

H6

H7

H8

H9

L1

L2

L3

L4

L5

W

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

16 32 H7
-
16 16
25
25 H7
-
M8 8 4 H13
-
35
29.5
56 43 20 11 2 20 2 0.5 65
80
46 23 25 10.5 0.05
25 45 H7
-
25 25
32
34 H7
-
M12 6 6 H13
-
44
40.5
72 58 25 12 2.5 30 2.5 1 85
-
58 29 33 16 0.05
32 60 H7
-
32 32
40
45 H7
-
M16 8 6 H13
-
52
48
85 70 35 13 2.5 30 2.5 1.5 102
-
70 35 41 17 0.1
40 75 H7
-
40 40
50
55 H7
-
M20 10 6 H13
-
64
59
105 87 45 15 3 30 3 2.5 125
-
85 42.5 50 23 0.1
50 90 H7
-
50 50
63
68 H7
-
M20 10 8 H13
-
72
65.5
122 100 45 17 3 35 4 2.5 140
-
100 50 58 30 0.1
63 120 H7
-
63 63
80
90 H7
-
M30 12 8 H13
-
95
86.5
155 130 65 20 4 40 4 3 180
-
125 62.5 75 38 0.2
1) Maximum dimension