Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 K-500.A

An Eaton Brand

Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.

1CESHOMS95/1CEESHOMS95 - Motor Mounted Valves

OMS Mounting Pattern Single and Dual Overcenter Valves with Brake Release Shuttle

Description

Overcenter Valves give

static and dynamic control

of loads by regulating the

flow into and out of hydraulic

actuators. When installed

close to or within an actuator,

the overcenter valve will

stop runaway in the event

of hose burst and if open

center directional control

valves are used, will allow

thermal expansion relief of the

hydraulic fluid.

These dual overcenter

valves also contain a brake

release shuttle valve which

ensures that pressure is

applied to a brake release

circuit regardless of whether

pressure is applied to ports

V1 or V2. These multifunction

valves are normally used for

the static and dynamic control

of systems using motors or

semi-rotary actuators.

Operation

The check section allows

free flow into the actuator

then holds and locks the load

against movement. The pilot

assisted relief valve section

will give controlled movement

when pilot pressure is applied.

The relief section is normally

set to open at a pressure at

least 1.3 times the maximum

load induced pressure but the

pressure required to open the

valve and allow movement

depends on the pilot ratio of

the valve. For optimization

of load control and energy

usage, a choice of pilot ratios

is available.

The pressure required to open

the valve and start actuator

movement can be calculated

as follows:

Pilot Pressure =

(Relief Setting) - (Load Pressure)

Pilot Ratio

Pilot Ratios

4:1 Best suited for

applications where

load varies and

machine structure can

induce instability

8:1 Best suited for

applications where

the load remains

relatively constant.

Other ratios available

upon request

1CESHOMS95-1

1CESHOMS95-2

1CEESHOMS95

Ratings and Specifications

Figures based on: Oil Temp = 40°C Viscosity = 32 cSt (150 SUS)

Rated flow 90 L/min (23 USgpm)

Max setting Max load induced

Pressure: 270 bar (4000 psi)

Relief setting: 350 bar (5000 psi)

Cartridge material Working parts hardened & ground steel

External surface zinc plated

Body material Standard aluminium (up to 210 bar*)

Add suffix '377' for steel option

Mounting position Unrestricted

Cavity Number A12336 (See section M)

Torque cartridge into cavity 60 Nm (44 ibs ft)

Weight 1CESHOMS95 2.32 kg (5.10 lbs)

(inc cartridges) 1CEESHOMS95 2.42 kg (5.32 lbs)

Seal kit number 1CESHOMS95 SK1282 (Nitrile) SK1282V (Viton)

1CEESHOMS95 SK795 (Nitrile) SK795V (Viton)

Recommended filtration level BS5540/4 Class 18/13 (25 micron nominal)

Operating Temp -30°C to +90°C (-22° to 194°F)

Leakage 0.3 milliL/min nominal (5 dpm)

Nominal viscosity range 5 to 500 cSt

Performance Data

CT1

CT3

CT2

CT3

CT1

CT2

CT3

EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 K-501.A

An Eaton Brand

Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.

Pressure Drop

Basic Code: 1CEESHOMS35

Complete Valve 1/2" Ports

Cavity plug part number

Nitrile

AXP14434-02-N

AXP14434-02-V

Model Code

1CE*SHOMS95-* F 4W 35 S 4 BK

1 2 3 4 5 6 7

1 Basic Code

1CEESHOMS95 - Double

Cartridge and Body

1CESHOMS95-1 - Single

overcenter in line V1-M1

1CESHOMS95-2 - Single

overcenter in line V2-M2

2 Adjustment Means

F - Screw Adjustment

6 Pilot Ratio

4 - 4:1

8 - 8:1

7 Mounting

BK - Bolt Kit

1CESHOMS95/1CEESHOMS95 - Motor Mounted Valves

OMS Mounting Pattern Single and Dual Overcenter Valves with Brake Release Shuttle

– –

4 Pressure Range

Note: Code based on pressure

in bar.

20 - 70-225 bar.

Std setting 100 bar

35 - 200-350 bar.

Std setting 210 bar

Std setting made at 4.8 L/min

* Cartridges must not be adjusted above

the safe working pressure of the motor

5 Seals

S - Nitrile

(For use with most industrial

hydraulic oils)

SV - Viton

(For high temperature and

most special uid applications)

Code V1 & V2 Brake Housing Number

4W 1/2" BSPP 3/8" BSPP BXP24056-4W-S

3 Port Size

Dimensions

mm (inch)

Check motor mounting

compatibility before

specifying.

Tightening torque of “F”

adjuster locknut - 20 to 25 Nm

Note: For applications over

210 bar (3000 psi), please con-

sult our technical department

or use the steel body option.

13.50

(0.53)

45.00

(1.77)

32.00

(1.26)

21.00

(0.83)

35.00

(1.38)

42.00

(1.65)

90.00 (3.54)

62.0

(2.44)

approx

127.00

(5.00)

62.00 (2.44)

24.00 (0.94)

66.00 (2.60)

91.00

(3.58)

2 overcentre

valves

1CE90-F**-*-*

CT2 CT1

CT3

V1 V2