Italdem GK850 Diaphragm

Italdem GK850 Hydraulic Breaker Diaphragm

The Italdem GK850 diaphragm is a high-quality aftermarket spare part used in the nitrogen accumulator of hydraulic breakers. It separates nitrogen gas from hydraulic oil, stabilizes impact energy, and dampens pressure spikes to protect seals and valves. The compound and geometry are optimized for low gas permeability, reliable sealing, and long cycle life under high-frequency operation.

FEATURES

• Oil-resistant elastomer (typically NBR/HNBR) formulated for nitrogen service and low permeability.
• Precision-molded profile and sealing bead to match the accumulator cap/groove for leak-tight fit.
• Controlled thickness and tolerance for consistent precharge behavior and energy return.
• Optional fabric-reinforced construction (model dependent) for improved fatigue strength.
• Excellent fatigue resistance under high cycling; maintains sealing over temperature and pressure variations.

TECHNICAL SPECIFICATIONS

COMPATIBILITY & QUALITY

This diaphragm is designed as a direct replacement, fully compatible with the original accumulator design of the related brand and model. Produced under strict QC: compound hardness (Shore A) verification, cure control, dimensional inspection, and leakage tests to ensure durability and OEM-level fit.
Also referred to as membrane or accumulator diaphragm by different manufacturers.

WHAT IS INCLUDED?

Diaphragm (single piece)

Depending on the breaker brand and model, some versions may be sold with a small sealing set (e.g., cap O-ring / backup ring). This is general information; the product you are viewing may or may not include additional seals.

INSTALLATION & SAFETY NOTES

• Charge with nitrogen only—never air or oxygen.
• Always relieve system pressure before service; follow OEM precharge values/procedures.
• Use clean hydraulic oil and replace aged/damaged seals during reassembly.

Frequently Asked Questions (FAQ)

Q: Is this diaphragm compatible with Italdem GK850?
A: Yes, this product is specifically manufactured according to Italdem GK850 hydraulic breaker specifications for a 100% fit.

Q: Are spare parts like O-rings included?
A: It depends on the model. While the diaphragm is always included, O-rings are included only if standard for that specific model.

Q: Are shipping costs included in the price?
A: No, shipping is not included in our prices. Please contact our sales team to get a quote for the best delivery options to your location.