Chevron Packing suitable for Sandvik CH440 CS440 Cone Crusher Part ONA-442.7112-00

Product Overview
When maintaining a cone crusher suitable for Sandvik, the focus is often on liners, mantles, and other high-wear components. However, one of the most critical parts for ensuring consistent performance and preventing costly downtime is a small but vital sealing component: the chevron packing. This article explores the function of this component, the risks of using substandard alternatives, and the ONA-442.7112-00 chevron packing solution for the CH440, CS440, and their earlier counterparts H4800 and S4800.

Understanding the Chevron Packing Seal

The chevron packing, also known as a V‑ring or chevron seal, is a type of dynamic seal used in high-pressure hydraulic applications. In the context of a cone crusher suitable for Sandvik, these seals are typically found within the Hydroset cylinder, a critical system that controls the closed side setting (CSS) and provides overload protection – models such as Sandvik CH440 and CS440 all rely on this technology. The seal operates on a progressive principle, where hydraulic fluid pressure forces the multiple lips of the chevron packing outward to create a positive seal against the cylinder wall. A failure can be costly; for instance, a seal with insufficient durometer (hardness) can extrude under pressure, leading to setting instability. Replacing a worn or damaged chevron packing with a high‑quality, OEM‑spec component is therefore essential for restoring reliable performance and extending the life of the crusher’s hydraulic system.

Product Advantages

Direct OEM Replacement
The ONA-442.7112-00 chevron packing is a precision‑engineered direct replacement for the original sealing component used in cone crushers suitable for Sandvik CH440, CS440, and their earlier counterparts H4800 and S4800. It matches OEM specifications exactly, ensuring a perfect fit without any modifications during installation.

Lightweight and Easy to Install
Weighing only 3 kg, this compact seal is easy to handle and install during routine maintenance. Its lightweight design reduces physical strain on service crews and simplifies on‑site replacement, helping to minimise downtime.

Reliable Sealing Performance

The chevron packing ensures the Hydroset cylinder maintains consistent hydraulic pressure, delivering accurate closed side setting (CSS) control. It prevents fluid bypass, eliminates setting drift, and protects the hydraulic system from contamination, extending the service life of your crusher.

Large Inventory for Fast Dispatch

ONA maintains a substantial stock of the ONA-442.7112-00 chevron packing, ensuring fast dispatch and minimal lead time for urgent maintenance needs. This ready availability helps operators avoid costly production delays caused by long waiting periods for critical sealing components.

Extended Model Coverage

ONA maintains a comprehensive inventory of chevron packing suitable for Sandvik cone crusher models, including CH420, CH430, CH440, CH660, CH870, CS420, CS430, CS440, CS660, and their corresponding H-series and S-series counterparts. Each chevron packing is precision-manufactured to the specific dimensions and specifications required for its respective model, ensuring a perfect fit and reliable performance. 

ONA Chevron Packing suitable for Sandvik
Whether you need a chevron packing for a CH440, a CH660, or an older H4800, ONA has the right part in stock -ready for fast dispatch.

Quality and Manufacturing Assurance
The ONA-442.7112-00 chevron packing is manufactured from high-quality materials, selected for their durability and resistance to hydraulic pressure and temperature variation. Each packing is precision-molded to ensure consistent performance and long service life. ONA applies strict quality control throughout the production process, from material inspection to final testing, ensuring every chevron packing meets OEM standards. This results in fewer unscheduled replacements and lower overall maintenance costs.

FAQs

Q1: Is the ONA-442.7112-00 chevron packing compatible with other Sandvik crusher models?

A1: No. It is specifically designed for CH440, CS440, H4800, and S4800 only. For other models, please check your part number as dimensions differ by model.

Q2: How often should the chevron packing be replaced?

A2: Replace it whenever signs of wear, cracking, or extrusion are found during routine inspection -typically when the Hydroset system is serviced.

Q3: What are the signs of a failing chevron packing, and is the ONA‑442.7112‑00 in stock?

A3: Common signs include inconsistent CSS, setting drift, and visible oil leaks from the cylinder area. Yes, the ONA-442.7112-00 is always in stock at ONA for immediate dispatch. Contact us for inquiries or orders.