LHB-E Series Hydraulic Elevator Oil Buffer Manufacturers

Comprehensive Industry Guide: LHB-E Series Hydraulic Elevator Oil Buffer

The Final Safety Line: Why Oil Buffers are Essential for Hydraulic Elevators

In hydraulic elevator systems, oil buffers serve as the last physical safety barrier installed in the elevator pit. When an elevator car "squats" (over-travels and impacts the pit) due to control system failure or other unexpected circumstances, the buffer converts the kinetic and potential energy of the car into heat energy through controlled hydraulic fluid displacement, achieving a smooth deceleration to stop. This is crucial for protecting equipment structural integrity and ensuring passenger safety. As an enterprise with 20 years of deep expertise in the elevator safety sector, Shanghai Liftech Elevator Accessories Co., Ltd. designs the LHB-E series specifically for this critical mission, with reliable performance providing solid assurance for elevator safe operation.

Selection Guide: Choosing the Right Oil Buffer for Your Hydraulic Elevator Project

Proper selection is essential to ensure effective operation of oil buffers. The selection is primarily based on three core parameters:

• Rated Speed: The maximum designed operating speed of the elevator.
• Total Mass: The sum of the car weight and the rated load.
• Buffer Stroke: The maximum distance the buffer piston rod can compress.

LHB-E Series Model Selection Reference

Leveraging its profound technical expertise, Shanghai Liftech provides comprehensive technical support and selection services to ensure customers can match the most suitable buffer model for their project.

Oil Buffer vs. Polyurethane Buffer: Why Hydraulic Elevators Must Use Oil Buffers

Elevator buffers are mainly categorized into oil (hydraulic) type and spring (polyurethane) type. Their application scenarios are strictly distinguished:

• Polyurethane Buffers: Suitable for traction elevators with rated speeds not exceeding 1.0 m/s. They have energy-storing characteristics and generate significant rebound force.
• Oil Buffers: Suitable for all hydraulic elevators and traction elevators with rated speeds exceeding 1.0 m/s. They have energy-dissipating characteristics, providing smooth deceleration without rebound.

Hydraulic elevators must use oil buffers because they typically carry heavier loads, and their operational characteristics require the buffering process to be smooth and bounce-free to avoid secondary impacts on the hydraulic cylinder and the entire support structure. The Liftech LHB-E series, designed specifically for hydraulic elevators, meets this stringent energy dissipation requirement.

Maintenance and Inspection: Key Steps to Ensure Oil Buffers are Always Ready

Oil buffers are safety components that "remain idle for a thousand days only to be used in one moment," making regular maintenance and inspection paramount. Key steps include:

• Visual Inspection: Check the cylinder for oil leaks, corrosion, or physical damage.
• Stroke Check: Ensure the piston rod can extend and retract freely without sticking.
• Reset Test: With the elevator in maintenance mode, compress the buffer and observe if it smoothly returns to its fully extended position.
• Periodical Calibration: According to national special equipment safety regulations, buffers require periodic type testing and calibration by professional organizations.

As a professional manufacturer of elevator safety components, Shanghai Liftech subjects its products to rigorous testing before leaving the factory, ensuring reliability and long service life, thereby providing a solid foundation for customers' daily maintenance.

From Design to Testing: How Liftech Builds a Reliable LHB-E Series Oil Buffer

The creation of a high-performance buffer embodies the manufacturer's technical heritage and meticulous craftsmanship. Shanghai Liftech demonstrates this throughout the manufacturing process of the LHB-E series:

• R&D and Design: Precise calculations and simulations based on hydrodynamics optimize the internal throttling structure and damping curve.
• Materials and Manufacturing: Use of high-strength cylinder bodies and high-performance sealing materials ensures pressure-bearing capacity and long-term sealing, preventing oil leaks.
• Stringent Testing: Each product model undergoes performance tests, including key indicators like buffer capacity, buffer speed, and reset time, ensuring compliance with national standards and customer requirements.
• Quality System: The company has established a comprehensive quality management system, ensuring full process control from raw material intake to finished product shipment.

It is through this focus on technology and quality that Liftech has become a trusted partner for numerous mainstream elevator brands both domestically and internationally.

About Shanghai Liftech Elevator Accessories Co., Ltd.

Founded in 2004, Shanghai Liftech Elevator Accessories Co., Ltd. is a specialized enterprise dedicated to the R&D, manufacturing, testing, and sales of elevator safety components. With over two decades of sustained development, Liftech has established itself as a leading manufacturer in China's elevator safety sector, providing high-quality products and solutions to a wide range of major elevator brands and engineering clients across domestic and international markets.