Huilian SB81N Membrane — Durable Excavator Breaker Diaphragm
Product Overview
The Huilian SB81N membrane is a precision-engineered diaphragm designed for hydraulic breakers and excavator hammer systems. Made from a high-strength, oil-resistant polymer compound, the SB81N membrane provides reliable sealing, reduces internal leakage, and helps maintain consistent breaker performance under heavy workloads.
Key Features
- High durability: Wear- and abrasion-resistant material for longer service life.
- Oil and heat resistant: Stable performance in high-temperature and high-pressure environments.
- Precision fit: Engineered to match SB81N-series breaker housings and compatible models.
- Reliable sealing: Minimizes oil loss and preserves hydraulic efficiency.
- Easy replacement: Designed for straightforward installation and maintenance.
Technical Benefits
The SB81N membrane ensures smoother hammer strokes and reduces downtime caused by seal failure. Improved sealing leads to better energy transfer from the hydraulic system to the tool, which enhances breaking efficiency and lowers operating costs over time.
Why Choose Huilian
Founded in 2005, Huilian Machine is a professional OEM supplier and one of China’s leading manufacturers of excavator breaker parts. We offer a full range of components including hydraulic breaker hammers, chisels, seals and seal kits, diaphragms, pistons, wear bushes, retainers, bolts, valves and liners. Our experienced team of technicians, R&D experts, designers, quality control staff and after-sales professionals ensures every part meets high standards.
Quality Assurance & Global Support
Huilian products are exported to over 90 countries and regions. Each SB81N membrane undergoes strict quality checks to guarantee consistency and reliability. We provide technical support, clear installation guidance, and are actively seeking global distributor partners to support sustainable industry growth. Visit our website: https://www.huilianmachine.com/ for full product details.
Applications & Installation
The SB81N membrane is ideal for demolition, quarrying, construction and roadworks where hydraulic breakers operate under heavy duty. Installation is straightforward for trained technicians; regular inspection and timely replacement of the membrane will maximize breaker uptime and performance.
Choose the Huilian SB81N membrane for dependable sealing, extended service life and professional global support — a practical upgrade for any hydraulic breaker maintenance plan.
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FAQ
Do you offer OEM and aftermarket parts?
Yes, we manufacture high-quality OEM parts and supply aftermarket parts from top brands such as NOK, Parker, SKF, and Hallite to ensure optimal performance.
Are your parts compatible with all excavator brands?
Yes, our parts are designed to be compatible with major brands like Komatsu, Caterpillar, Hitachi, Hyundai, Doosan, JCB, Kobelco, Sany, and many more.
What is your shipping and delivery time?
We offer fast and reliable global shipping. Delivery times vary depending on location and order size, but we strive to process and ship orders as quickly as possible.
How can I ensure I’m selecting the right part for my equipment?
Our expert team can assist you in finding the right part based on your machine model, specifications, and requirements. Contact us for personalized support.
If you don’t find your answer, please E-mail us and we’ll be happy to help you out.

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