Epiroc EC Series Accumulator Diaphragm For Nitrogen Pressure And Impact Energy Control

Product Introduction

The Epiroc EC Series Accumulator Diaphragm For Nitrogen Pressure And Impact Energy Control is a key replacement part used in the accumulator system of excavator-mounted hydraulic breaker hammers. It is suitable for Epiroc EC Series hydraulic breakers, including common models such as EC40T, EC60T, EC70T, EC80T, EC90T, EC100T, EC120T, EC135T, EC140T, EC150T, EC155T, EC165T, and EC180T.

The diaphragm works inside the hydraulic breaker accumulator. Its main role is to separate nitrogen gas from hydraulic oil, support pressure balance, and help the hammer store and release impact energy during operation. When the diaphragm performs correctly, the breaker can maintain more stable striking force, smoother working frequency, and better energy recovery.

During demolition, quarrying, mining, road construction, trenching, concrete breaking, and rock splitting, a hydraulic hammer faces constant pressure changes and strong vibration. The diaphragm must remain flexible and sealed under repeated compression. If the diaphragm becomes cracked, aged, hardened, torn, or deformed, the breaker may lose pressure, impact power may become weak, nitrogen may leak, hydraulic oil may enter the accumulator chamber, or the hammer may stop working normally.

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

Material

Our Epiroc EC Series hydraulic breaker diaphragms are commonly produced from selected rubber or rubber-based composite materials according to breaker model and working conditions. Material options may include NBR, HNBR, FKM, reinforced rubber, or other oil-resistant and pressure-resistant elastomer materials depending on customer requirements.

A good accumulator diaphragm must have oil resistance, pressure resistance, elasticity, fatigue resistance, and tear resistance. It needs to withstand hydraulic oil, nitrogen pressure, temperature changes, and continuous vibration from breaker impact cycles.

If the material is too soft, the diaphragm may deform quickly and lose sealing performance. If it is too hard, it may crack under repeated pressure movement. Therefore, the correct material hardness and elastic recovery are important for stable hydraulic breaker performance.

For heavy-duty working conditions such as quarry secondary breaking, mining support work, reinforced concrete demolition, and long-hour construction jobs, the diaphragm should have stronger fatigue resistance and better sealing durability.

Product Features

The Epiroc EC Series diaphragm is designed for accumulator pressure stability. Unlike seal kits that mainly prevent oil leakage, the diaphragm focuses on gas and oil separation inside the accumulator. It helps the hydraulic hammer manage pressure fluctuation and maintain impact energy during operation.

Accurate size is important for diaphragm installation. The outer diameter, thickness, sealing edge, shape, flexibility, and compression performance must match the accumulator chamber. 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 the diaphragm is in good condition, the hydraulic hammer can work more smoothly and maintain better impact response.

This part is suitable for accumulator repair, breaker rebuild projects, regular maintenance, and spare parts stock. It can also be supplied together with pistons, cylinders, seal kits, chisels, bushings, rod pins, side bolts, through bolts, front heads, back heads, buffers, and wear plates.

Main Advantages

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

For demolition contractors, stable nitrogen pressure helps the hammer deliver stronger and more consistent impact when breaking reinforced concrete, road surfaces, foundations, and bridge structures. For quarry and mining customers, the diaphragm helps the breaker maintain power during continuous stone breaking and hard material reduction.

Replacing a damaged diaphragm in time can prevent further problems. If a broken diaphragm continues working, nitrogen pressure may drop, oil may enter the gas chamber, and the accumulator may fail to support impact energy correctly. This can lead to weak striking force, unstable frequency, abnormal vibration, and higher repair cost.

For repair workshops and spare parts distributors, diaphragms are important maintenance items. Keeping correct Epiroc EC Series diaphragms in stock can help complete accumulator repair faster and improve customer service efficiency.

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, cylinders, chisels, inner bushes, outer bushes, rod pins, side bolts, through bolts, front heads, back heads, buffers, wear plates, and other hydraulic breaker repair components.

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

We support hydraulic breaker repair shops, machinery parts distributors, equipment rental companies, construction contractors, quarry operators, mining service suppliers, and maintenance teams. Whether customers need one diaphragm for urgent accumulator repair or multiple models for regular stock, we can provide flexible support.

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

Applications

The Epiroc EC Series Diaphragm is widely used in:

• Hydraulic breaker accumulator repair

• Nitrogen pressure system maintenance

• Excavator hammer impact energy recovery

• Hydraulic breaker rebuild projects

• Demolition hammer service

• Quarry and mining breaker maintenance

• Road construction breaker repair

• Concrete breaking equipment service

• Spare parts stock for repair workshops and distributors

Parameter Table

FAQ

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

Q2: What is the function of a hydraulic breaker diaphragm?
The diaphragm separates nitrogen gas from hydraulic oil inside the accumulator. It helps support pressure stability, energy storage, and stable impact performance.

Q3: What materials are used for the diaphragm?
Common material options include NBR, HNBR, FKM, reinforced rubber, or other rubber-based composite materials depending on model and working conditions.

Q4: 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 regular accumulator maintenance.

Q5: What problems can a damaged diaphragm cause?
A damaged diaphragm may cause pressure loss, weak striking force, unstable hammer performance, nitrogen leakage, oil contamination in the accumulator chamber, and higher repair cost.

Q6: How can I confirm the correct diaphragm model?
You can provide the breaker model, accumulator photo, old diaphragm dimensions, nameplate information, drawings, samples, or part numbers. We can help confirm the correct item before shipment.

Q7: Can I order diaphragms together with other hydraulic breaker parts?
Yes. Diaphragms can be supplied together with seal kits, pistons, cylinders, chisels, bushings, rod pins, side bolts, through bolts, front heads, back heads, buffers, and wear plates.