Everdigm EHB Series Accumulator Diaphragm For Nitrogen Pressure And Impact Balance

Product Introduction

The Everdigm EHB Series Accumulator Diaphragm For Nitrogen Pressure And Impact Balance is a replacement rubber diaphragm used in the accumulator system of excavator-mounted hydraulic breaker hammers. It is suitable for Everdigm EHB Series hydraulic breakers, including common models such as EHB02, EHB04, EHB05, EHB13, EHB17, EHB20, EHB25, EHB30, EHB40, and EHB50.

The diaphragm is an important part inside the hydraulic breaker accumulator. Its main function is to separate nitrogen gas from hydraulic oil, maintain pressure balance, support impact energy storage, and help the breaker deliver stable striking performance. During hydraulic breaker operation, nitrogen pressure and hydraulic oil pressure work together to support the impact cycle. A good diaphragm helps the hammer respond more smoothly and maintain consistent power.

When the diaphragm becomes aged, cracked, hardened, torn, deformed, or loses elasticity, the hydraulic breaker may show weak impact, unstable frequency, nitrogen pressure loss, oil entering the accumulator chamber, abnormal vibration, slow response, or reduced breaking efficiency. Replacing the diaphragm in time can help restore accumulator function and improve hammer stability.

This product is an aftermarket replacement diaphragm compatible with Everdigm EHB Series hydraulic breakers. The Everdigm name and EHB model references are used only for compatibility identification.

Material

Our Everdigm EHB Series hydraulic breaker diaphragms are commonly produced from selected rubber or rubber-based composite materials according to breaker model, accumulator structure, pressure requirement, and working condition.

Common material options may include NBR, HNBR, FKM, reinforced rubber, or other oil-resistant and pressure-resistant elastomer materials. The diaphragm must have good elasticity, oil resistance, nitrogen pressure resistance, fatigue resistance, and tear resistance.

NBR is a practical rubber material with good oil resistance and sealing performance for general hydraulic applications.
HNBR provides better heat resistance, fatigue resistance, and mechanical strength than standard rubber materials.
FKM is suitable for working conditions that require stronger oil resistance, heat resistance, and chemical stability.
Reinforced rubber can help improve strength and durability under repeated compression and rebound.

A diaphragm that is too soft may deform quickly and lose pressure support. A diaphragm that is too hard may crack during repeated pressure movement. Correct material hardness and elastic recovery are important for stable hydraulic breaker operation.

Product Features

The main feature of the Everdigm EHB Series diaphragm is accumulator pressure support. Unlike a seal kit that mainly controls hydraulic oil leakage, the diaphragm works inside the accumulator to manage nitrogen pressure and impact balance.

The diaphragm separates gas and oil inside the accumulator chamber. When the hammer works, it helps absorb pressure fluctuation and supports impact energy release. This makes the hydraulic breaker strike more steadily and reduces unstable operation caused by pressure loss.

Accurate size is very important. The diaphragm diameter, thickness, sealing edge, shape, flexibility, and compression performance must match the accumulator system. If the diaphragm is incorrectly sized, it may be difficult to install or may fail quickly after operation.

The diaphragm works together with the accumulator, back head, piston, cylinder, seal kit, hydraulic oil circuit, and nitrogen charging system. When these parts are properly matched, the breaker can maintain better impact response and more stable working frequency.

This diaphragm can be supplied for accumulator repair, breaker rebuild, pressure system maintenance, regular service, and spare parts stock. It can also be ordered together with seal kits, pistons, cylinders, chisels, inner bushes, outer bushes, rod pins, through bolts, side bolts, front heads, back heads, buffers, and wear plates.

Main Advantages

The main advantage of the Everdigm EHB Series accumulator diaphragm is stable nitrogen pressure control. A reliable diaphragm helps keep nitrogen gas and hydraulic oil separated, reduces pressure loss, and supports stable impact energy during breaker operation.

For demolition contractors, stable accumulator performance helps the breaker maintain power when breaking concrete slabs, walls, foundations, and reinforced structures. For road repair and municipal construction, the diaphragm helps support smoother hammer response during asphalt removal, curb breaking, trenching, and pavement maintenance. For quarry and stone breaking work, pressure stability is important during continuous operation.

Timely diaphragm replacement can also prevent further damage. If a broken diaphragm continues working, nitrogen pressure may drop, hydraulic oil may enter the gas chamber, and the accumulator may fail to support the impact cycle. This can cause weak striking force, unstable frequency, abnormal vibration, and higher repair cost.

For repair workshops and spare parts dealers, diaphragms are important hydraulic breaker maintenance parts. Keeping Everdigm EHB Series diaphragms in stock can help complete accumulator repair faster and reduce customer downtime.

Why Choose Us

Customers choose us because we focus on hydraulic breaker aftermarket spare parts and model matching support. We supply diaphragms, seal kits, pistons, chisels, cylinders, inner bushes, outer bushes, rod pins, through bolts, side bolts, front heads, back heads, buffers, wear plates, and other hydraulic breaker repair parts.

For Everdigm EHB Series diaphragms, we can help customers confirm the correct model before shipment. If the customer is not sure about the diaphragm specification, they can provide the breaker model, accumulator photo, old diaphragm dimensions, nameplate photo, drawings, samples, or part numbers. We can help check the matching details and reduce wrong orders.

We support hydraulic breaker repair workshops, construction machinery parts dealers, equipment rental companies, demolition contractors, road maintenance teams, quarry operators, and machinery service suppliers.

Customization is available for material selection, hardness requirement, size checking, packaging, labels, neutral packing, customer branding, and export-ready supply.

Applications

The Everdigm EHB Series Diaphragm is widely used in:

• Hydraulic breaker accumulator repair
• Nitrogen pressure system maintenance
• Excavator hammer impact balance recovery
• Hydraulic breaker rebuild projects
• Concrete demolition breaker service
• Road repair and trenching hammer maintenance
• Quarry and stone breaking equipment service
• Repair workshop spare parts stock
• Equipment rental fleet maintenance

Parameter Table

FAQ

Q1: Is this diaphragm an original Everdigm part?
No. This is an aftermarket replacement diaphragm compatible with Everdigm EHB Series hydraulic breakers. The Everdigm name and model references are used only for compatibility identification.

Q2: Which Everdigm EHB models are covered?
Common models include EHB02, EHB04, EHB05, EHB13, EHB17, EHB20, EHB25, EHB30, EHB40, and EHB50.

Q3: What is the function of a hydraulic breaker diaphragm?
The diaphragm separates nitrogen gas from hydraulic oil inside the accumulator. It helps maintain pressure balance, support impact energy, and improve hammer stability.

Q4: What materials are used for the diaphragm?
Common material options include NBR, HNBR, FKM, reinforced rubber, or rubber-based composite materials depending on model and working conditions.

Q5: When should I replace the diaphragm?
The diaphragm should be replaced when the breaker has weak impact, unstable frequency, nitrogen pressure loss, oil entering the accumulator, abnormal vibration, or during accumulator maintenance.

Q6: What problems can a damaged diaphragm cause?
A damaged diaphragm may cause nitrogen pressure loss, weak striking force, unstable impact frequency, oil contamination in the accumulator chamber, and higher repair cost.

Q7: How can I confirm the correct diaphragm model?
You can provide the breaker model, accumulator photo, old diaphragm dimensions, nameplate photo, drawings, samples, or part numbers. We can help confirm the correct item before shipment.

Q8: Can diaphragms be ordered with other hydraulic breaker spare parts?
Yes. Diaphragms can be supplied together with seal kits, pistons, chisels, cylinders, bushings, rod pins, through bolts, side bolts, front heads, back heads, buffers, and wear plates.