Counterbalance valve LCBIG LCBIH

4 week ago

2 0 

4 year

Product details

Working Principle

• Unidirectional Free Flow: Oil can flow freely fromPort ② (Inlet)toPort ① (Outlet)without additional control.

• Pressure Relief Control: When oil flows fromPort ①toPort ②, it operates via a direct-acting, pilot-assisted pressure relief function. The pressure atPort ③ (Pilot Control Port)reduces the effective setting of the relief valve by the pilot ratio, enabling precise load pressure control.

• Pilot Assistance: Pilot pressure introduced throughPort ③lowers the main relief valve's cracking pressure, allowing smooth valve response to load pressure variations.

------

III. Technical Specifications

• Maximum Setting Pressure: 350 bar

• Maximum Recommended Load Pressure: 270 bar (at maximum setting pressure)

• Flow Characteristics: Refer to pressure-flow curves (specific curves available in the product manual).

• Internal Leakage: ≤5 drops/minute

• Pilot Ratios:

• LCBIG: 4.5:1

• LCBIH: 10:1

• Temperature Range: -40°C to +120°C

• Filtration Requirements: Mineral oil viscosity range: 7.4 to 420 cSt; standard filtration required.

• Cartridge Type: SUN T-19A

• Manifold Material:

• 6061-T6 Aluminum Alloy: Rated for 207 bar

• Steel and Ductile Iron: Rated for 350 bar

------

IV. Applications

LCBIG/LCBIH counterbalance valves are widely used in hydraulic systems requiring overrunning load control, such as:

• Cranes: Preventing uncontrolled lowering of heavy loads due to gravity.

• Excavators: Controlling the descent speed of booms or buckets for smooth operation.

• Injection Molding Machines: Preventing rapid mold closure caused by gravity, protecting equipment and molds.

• Other Hydraulic Equipment: Including die-casting machines, lifting platforms, and other applications requiring load control.

------

V. Installation and Commissioning

1. Mounting Orientation: Ensure correct valve orientation to avoid reverse oil flow.

2. Pilot Control: Adjust pilot pressure according to system requirements for optimal control.

3. Pressure Setting: The counterbalance valve's setting pressure should be at least 1.3 times the maximum load pressure to ensure a safety margin.

4. Backpressure Considerations: Backpressure atPort ②increases the relief valve's setting by a factor of "1 + pilot ratio." Account for this during commissioning.

------

VI. Maintenance and Troubleshooting

• Regular Inspections: Check for leaks and ensurePort ③is not blocked.

• Seal Replacement: Replace seals if internal leakage increases due to aging.

• Filtration Maintenance: Ensure clean hydraulic oil to prevent contaminants from entering the valve and affecting performance.

• Common Faults:

• Excessive Load Descent Speed: May indicate insufficient pilot pressure or a low relief valve setting.

• Excessive System Pressure: Check for backpressure effects or a stuck relief valve.

Similar Video Recommendation

< >

159

R983032281 AZPW-21-016RQRXXMB-S0593

124

R901284419 M-3SEW6U3X/420MG24N9K72L/B12S0407

122

multiway valve

spare parts video

4WRPEH6CB40L-3X/M24A1

7GFTMCRA11Vparts final drive & hydraulic motor

4WE6J62/EG24N9K4

A4VPARTS VIDEO

Bossgoovideo.com Contact Now

If you are interested in the product, contact Bossgoovideo.com for more information

*To:: Ningbo Hengnuo Hydraulic Drive Co.,Ltd

*Message:

Submit

 Disclaimer :

The information of Bossgoovideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of Bossgoovideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation. If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.

Suppliers

Ningbo Hengnuo Hydraulic Drive Co.,Ltd

Audited supplier

4 year

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

Contact now