Sun Hydraulics CBGA CBGG | CBGA-LHN CBGG-LJN Counterbalance Valve | Load Holding

Sun Hydraulics CBGA & CBGG Series Counterbalance Valves

Product Overview: Sun Hydraulics Counterbalance Valves are essential precision components designed to control overrunning loads and lock actuators in place. This series provides not only zero-leakage load holding but also extremely smooth motion control through pilot-assisted operation. This category features the high-performance models: CBGA-LHN (CBGALHN) and CBGG-LJN (CBGGLJN).

Utilizing Sun’s patented “Floating Style” cartridge design, these valves prevent internal spool binding caused by installation torque or manifold machining tolerances. They are the premier safety choice for mobile cranes, aerial work platforms, excavator boom controls, and any gravity-loaded circuits.

Key Technical Advantages:

• Zero-Leakage Load Holding: Precision-ground poppet seating ensures zero drift of the actuator in the hold position.

• Smooth Pilot Control: Optimized pilot ratios eliminate system chatter and ensure pulse-free, controlled descent under heavy loads.

• High Back-Pressure Tolerance: Specifically engineered to handle return-line back pressure while maintaining stable performance set-points.

• Series Precision Matrix:

  • CBGA Series: 3:1 Pilot Ratio, offering a perfect balance between responsiveness and stability for standard load-holding tasks.

  • CBGG Series: 4.5:1 Pilot Ratio, providing easier opening control for high-pressure systems or applications requiring higher sensitivity.

Detailed Specifications & Parameters:

• Core Series: Sun Hydraulics Counterbalance Cartridges.

• Featured Model Matrix: CBGA-LHN, CBGALHN, CBGG-LJN, CBGGLJN, T-11A, T-17A.

• Core Performance Specs:

  • Max Operating Pressure: Rated for heavy-duty operations up to 350 Bar (5,000 PSI).

  • Adjustment Ranges: H (1000–4000 PSI) / J (2000–5000 PSI) based on specific spring configurations.

  • Flow Capacity: CBGA (approx. 60 L/min); CBGG for high-flow requirements.

  • Adjustment Type: L (Standard Leak-proof screw adjustment).

  • Cavity Standards: Industry-standard T-11A (CBGA) and T-17A (CBGG) screw-in cavities.