Genuine HB-40G PU Accumulator Diaphragm for Heavy Hydraulic Breakers

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   The HB-40G PU diaphragm is molded from high-grade thermoplastic polyurethane (PU). Compared to standard rubber diaphragms, polyurethane offers exceptional tensile strength, superior tear resistance, and high abrasion tolerance—making it ideal for large-class hydraulic hammers subjected to intense recoil vibrations and extreme hydraulic impulse cycles.

The SPARKLING MACHINERY NEW HB-40G PU Diaphragm Photo:

The SPARKLING HB-40G PU Accumulator Diaphragm is a precision replacement component designed for heavy-duty hydraulic breakers. Installed inside the accumulator, the diaphragm separates hydraulic oil from nitrogen gas, helping maintain stable pressure and absorb hydraulic pulsation during breaker operation.

Manufactured from durable polyurethane (PU), this diaphragm offers excellent flexibility, wear resistance, and sealing performance. Its reliable elasticity helps it withstand repeated pressure cycles, vibration, and demanding jobsite conditions. A properly functioning accumulator diaphragm supports smoother impact performance, protects hydraulic components, and helps reduce unexpected downtime.

--- Key Features and Benefits
- Application-specific design: Suitable for HB-40G heavy hydraulic breakers; confirm dimensions and breaker model before ordering.
- Durable PU material: Provides strong resistance to abrasion, fatigue, and repeated deformation.
- Reliable sealing: Helps prevent gas and oil separation failure inside the accumulator.
- Stable breaker performance: Supports consistent hydraulic pressure and efficient impact energy transmission.
- Cost-effective maintenance: An ideal replacement for worn, cracked, or deformed accumulator diaphragms.
- Quality-controlled production: SPARKLING MACHINERY applies strict manufacturing and inspection procedures to support dependable service life.

--- Recommended Replacement Conditions
Replacement is recommended when the breaker shows unstable impact force, abnormal accumulator pressure, oil leakage, reduced efficiency, or visible diaphragm damage. Professional installation and correct nitrogen charging are strongly advised. Always inspect the accumulator, sealing surfaces, and related components before installation.

SPARKLING MACHINERY, founded in 2013, specializes in high-quality excavator and hydraulic breaker parts. We provide reliable components, technical consultation, customized solutions, and global service for customers working with Caterpillar, Komatsu, Hitachi, Volvo, and other leading equipment brands.