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MODEL

CBCHCBCH

10:1 pilot ratio, standard capacity counterbalance valve

SERIESSERIES 1 / 1 / CAPACITY:CAPACITY: 60 L/min. / 60 L/min. / CAVITY:CAVITY: T-11A T-11A

3-Port Non-vented

3-Port Non-vented, Fixed Setting

Counterbalance valves with pilot assist are meant to control an overrunning load. The check

valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-

acting, pilot-assisted relief valve controls flow from port 1 to port 2. Pilot assist at port 3

lowers the effective setting of the relief valve at a rate determined by the pilot ratio.

Other names for this valve include motion control valve and over-center valve.

sunhydraulics.com/model/

CBCH

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(L)(L)CONTROLCONTROL

LL Standard Screw Adjustment

CC Tamper Resistant - Factory Set

(J)(J)FUNCTIONAL SETTING RANGEFUNCTIONAL SETTING RANGE

JJ 2000 - 5000 psi w/25 psi Check

(140 - 350 bar w/ 1,7 bar Check),

3000 psi (210 bar) Standard

Setting

CC 2000 - 5000 psi w/4 psi Check

(140 - 350 bar w/ 0,3 bar Check),

3000 psi (210 bar) Standard

Setting

DD 1000 - 2500 psi w/4 psi Check

(70 - 175 bar w/ 0,3 bar Check),

2000 psi (140 bar) Standard

Setting

KK 1000 - 2500 psi w/25 psi Check

(70 - 175 bar w/ 1,7 bar Check),

2000 psi (140 bar) Standard

Setting

(N)(N)SEAL MATERIALSEAL MATERIAL

NN Buna-N

EE EPDM

VV Viton

MATERIAL/COATINGMATERIAL/COATING

Standard Material/Coating

/AP/AP Stainless Steel, Passivated

/LH/LH Mild Steel, Zinc-Nickel

NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.

TECHNICAL DATATECHNICAL DATA

Cavity T-11A

Series 1

Capacity 60 L/min.

Pilot Ratio 10:1

Maximum Recommended Load Pressure at Maximum Setting 270 bar

Maximum Setting 350 bar

Pilot Configuration Bleed through

Factory Pressure Settings Established at 30 cc/min.

Maximum Valve Leakage at Reseat 0,3 cc/min.

Adjustment - No. of CCW Turns from Min. to Max. Setting 3.75

Operating Characteristic Standard

Reseat >85% of setting

Valve Hex Size 22,2 mm

Valve Installation Torque 41 - 47 Nm

Adjustment Screw Internal Hex Size 4 mm

Locknut Hex Size 15 mm

Locknut Torque 9 - 10 Nm

Seal kit - Cartridge Buna: 990011007

Seal kit - Cartridge EPDM: 990011014

Seal kit - Cartridge Polyurethane: 990011002

Seal kit - Cartridge Viton: 990011006

Model Weight 0.16 kg.

Model Code Example: CBCHLJNModel Code Example: CBCHLJNCONFIGURATION OPTIONSCONFIGURATION OPTIONS

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TECHNICAL FEATURESTECHNICAL FEATURES

Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.

Turn adjustment clockwise to decrease setting and release load.

Full clockwise setting is less than 200 psi (14 bar).

Backpressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the backpressure.

Reseat exceeds 85% of set pressure when the valve is standard set. Settings lower than the standard set pressure may result in

lower reseat percentages.

Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and

improved stiffness in the circuit.

Two check valve cracking pressures are available. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern.

This valve does not have positive seals on the pilot section and will pass between 2 and 20 in³/min./1000 psi (0,03 and 0,3 L/min./70

bar) between port 2 and port 3, depending on load pressure. This is a consideration in master-slave circuits and in the leak testing

of valve-cylinder assemblies.

All 3-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. same flow path, same

cavity for a given frame size).

Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids,

greases and lubricants will damage the seals.

Corrosion-resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP

for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all

options. For further details, please see the Materials of Construction page located under TECH RESOURCES.

Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation

torque and/or cavity/cartridge machining variations.

PERFORMANCE CURVESPERFORMANCE CURVES

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