Spring Applied, Hydraulically Released Brake (option just on the LHB Winches)
The Spring Applied, Hydraulically Released Brake is a specialized braking system incorporated exclusively in the LHB series capstan winches. This multi disc wet brake is spring applied, meaning it automatically engages to hold the load when hydraulic pressure is not applied, and is hydraulically released to allow winch operation. This system effectively eliminates hydraulic drift, a common issue in hydraulic winches, and provides additional protection in case of hydraulic failure.
Book an AppointmentImportance and benefits:
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1. Eliminates Hydraulic Drift
One of the main challenges in hydraulic winch systems is “hydraulic drift,” where internal hydraulic clearances allow the winch drum or capstan to slowly move or creep backward even when the brake is applied. The spring applied brake system physically locks the winch in place without relying solely on hydraulic pressure, preventing this drift entirely and ensuring the load remains perfectly stable.
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2. Enhanced Safety Through Fail-Safe Braking
Because the brake is spring applied, it automatically engages when hydraulic pressure is lost, providing a fail safe mechanism. This mechanical engagement protects both the operator and the equipment by preventing unintentional load movement or drops during hydraulic failures, power outages, or emergency stops.
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3. Hydraulic Releasing Enables Smooth Operation
While the spring applies the brake to hold the load, hydraulic pressure releases it when winch operation is needed. This design allows for smooth and precise winch control without sacrificing safety, combining the best features of mechanical and hydraulic braking systems.
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4. Standard Dual Counterbalance Valve Integration
LHB winches come standard with a manifold style mount dual counterbalance valve. This valve enhances control by preventing the load from overrunning or running away during operation, further improving safety and control under load.
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5. Fully Reversible Operation
The LHB braking system and counterbalance valves are designed to operate in both directions, providing versatility for applications requiring forward and reverse motion without compromising braking performance.
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6. Specialized Control Valve and Case Drain Requirements
The LHB winches must be paired with motor spool type control valves that do not block flow in neutral. This prevents oil from being trapped in the brake release cavity, ensuring the spring brake can apply reliably when needed. The inclusion of a case drain line is also necessary to maintain proper hydraulic function and brake performance.
Why It Matters:
The spring-applied, hydraulically released brake system is crucial for high demand winching operations where safety, precision, and reliability are non-negotiable. Traditional hydraulic brakes can suffer from internal leakage or pressure fluctuations, which may allow slow, unintended load movement (known as drift) that compromises safety and accuracy.
By integrating a spring-applied brake, LHB winches offer a dependable mechanical backup to hydraulic braking, ensuring the load remains held securely at all times, even in the event of hydraulic failure. This combination of mechanical and hydraulic braking gives operators peace of mind, especially when handling heavy or critical loads.
The dual counterbalance valve, along with reversible operation, allows for precise, responsive control, making the LHB winches highly adaptable across various applications. Although the LHB series is an alternate model to the LH series and not a retrofit option, it represents a significant advancement in winch safety and performance.
Contact UsIndustries that use the LHB Series with Spring Applied Brake:
1. Construction and Heavy Equipment
- For lifting, pulling, and holding heavy loads securely on job sites.
- Provides safety during equipment positioning and material handling.
2. Utility and Infrastructure
- Secures cables, pipes, and equipment in place during installation and maintenance.
- Essential for applications where load drift could result in service interruptions or hazards.
3. Mining and Industrial Operations
- Holds heavy machinery or materials reliably in underground or surface mining conditions.
- Improves safety when handling dynamic or unstable loads.
4. Forestry and Logging
- Prevents accidental movement of logs or equipment during hauling or processing.
- Enhances control when maneuvering in challenging environments.
5. Marine and Offshore
- Provides fail safe load holding in maritime applications, including cargo handling and mooring.
- Critical where sudden load shifts can pose significant risks.
The Spring Applied, Hydraulically Released Brake on the LHB series winches represents a vital advancement in winch braking technology. By combining a mechanical spring brake with hydraulic release, it eliminates hydraulic drift, enhances safety, and ensures reliable load holding even during hydraulic system failures.
Paired with a standard dual counterbalance valve and designed for fully reversible operation, the LHB series winches deliver precise, dependable performance across a wide range of industries that demand secure and controlled load handling.
This brake system matters because it directly addresses safety concerns inherent in purely hydraulic braking systems, reducing operational risks, equipment wear, and downtime. It is an ideal choice for professionals in construction, utilities, mining, forestry, and marine sectors who require the highest levels of safety and reliability.