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Eaton expands Walterscheid tube fitting portfolio with WALRINGplus Soft Seal Cutting Ring system

09 June 2021

Eaton announced the expansion of its Walterscheid portfolio with the launch of the robust WALRINGplus Soft Seal Cutting Ring system optimised for thin-wall tubing.

WALRINGplus is designed to meet demanding hydraulic tube fitting requirements in applications across agriculture, construction, commercial vehicles, discrete manufacturing, rail transport and other industries. Featuring a two-edge cutting ring with additional soft sealing for both possible leak paths, this tube fitting system enables easy, safe and repeatable assembly as well as reliable, leak-free operations. It is suitable to use with thin-walled tubes and therefore supports efficient weight and fuel reduction of mobile machinery and moving parts of stationary machinery.

Correct assembly is crucial to tube fitting performance and WALRINGplus is designed to prevent excessive or insufficient tightening. A clear block-stop function provides a tangible torque increase when an operator reaches the end of an assembly, so no torque or distance measurement is required. In addition, a significantly lower force is needed to pull the cutting ring over the tube – making assembly easier, faster and safer, while reducing the risk of damage to the soft seal. The O-ring groove position also allows for frequent reassembly with no impact on performance.

To eliminate the risk of leaks that can create costly damage and downtime, WALRINGplus also addresses their common root causes. 

Soft sealing prevents leakages if tubes or studs that are slightly scratched, if the fluid temperature fluctuates or if the retention force is reduced. Problems due to low assembly torque can also be identified before the cutting ring is pulled from the tube, reducing the risk of a catastrophic failure in application.

“We’re thrilled to launch this fantastic addition to our high-performance Walterscheid family,” said Christian Kuenstel, Product Manager, Connectors, EMEA region, Hydraulics, Eaton. “While there are other soft-seal cutting ring systems on the market, our innovative two-edge design with two additional O-rings, as well as the integration of the O-ring in the cutting ring to avoid separate assembly of the seal, offers improved leakage prevention.” 

Other advantages of WALRINGplus include: 

• Full optimisation for thin wall tubing.
• Designed to be qualified for stainless steel materials in the future.
• Offers a clear torque increase at the end of the assembly for small tube sizes.
• Simplified assembly, helping to reduce the risk of in-application failure and costly downtime from leaks.

Eaton’s bespoke Walterscheid M-R7 machine further reduces the assembly time and effort required for WALRINGplus as well as the risk of leaks. By automating the process of cutting-ring assembly and tube-forming, the M-R7 machine helps ensure optimum system performance while also reducing the required torque and rotation.

“In terms of assembly behaviour and performance, WALRINGplus is a win-win,” added Kuenstel. “Today’s customers are demanding lighter and more compact equipment, so thin-walled tubing with higher mechanical strength is growing in popularity for hydraulic applications. Thanks to its optimised cutting-edge geometry, block-stop-assembly function and soft sealing, WALRINGplus can support these benefits. This enables safe assembly for thin-wall tubing without the usual need to insert additional sleeves that increase costs and reduce flow rates.”

Specifications:

• Steel cutting ring with Viton O-rings.
• For tube sizes 6-42 mm.
• ISO8434-1 compliant.
• High burst pressure exceeding 4:1 safety factor.
• Working pressure up to 500 bar (L-series) and 800 bar (S-series).
• Supports dry assembly with steel components.

For more information about WALRINGplus and Eaton’s Walterscheid tube fitting portfolio, visit the website


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