Hydraulic systems & components


Floating style screw-in cartridge

Third Quarter 2004 Hydraulic systems & components Infrastructure IoT & Automation

The floating style cartridge construction was pioneered by Sun Hydraulics and provides performance and reliability advantages compared to other alternatives.

A significant advantage of the Sun cartridge is the free floating nose, allowing the close tolerance working parts to 'float' in the body.

This design significantly reduces the cartridge torque sensitivity and tendency of the internal moving parts to bind.

Cartridge valves can be removed from their cavities for cleaning or inspection without changing the setting or breaking any piping.

Sun cartridge valve internal components are heat treated for wear, impact, and fatigue resistance which extends the life of the cartridge.

Every Sun cartridge receives a functional hydraulic test prior to shipment.

The valve design allows engineers to create systems that result in maximum flow and minimum pressure drop with the effective use of space and ease of cartridge installation.

In order to ensure valve reliability, the cavity for the cartridge must be considered:

1. The shoulder diameter at the threads provides a guide to ensure that the cartridge is centred in the cavity.

2. Free floating subassembly tolerates eccentricity between cavity and cartridge nose.

3. Sun floating cartridge design allows higher installation torque, resulting in better cartridge retention and less chance of cartridge loosening and leaking during operation.

4. The flat shoulder provides a stop which supports the load generated by the thread without inducing radial load, causing cartridge distortion. Squareness with the centreline can be readily maintained.

5. For a given thread size, the central thread position results in maximum flow capacity, minimises the effect of eccentricity, and distributes thread loads deep in the manifold.

6. The stop in the bottom of the cavity supports the free floating subassembly during operation; retaining wire is used only during assembly.

For more information contact Fritz Kern, Axiom Hydraulics, +27 (0) 11 334 3068, [email protected], www.axiom.edx.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Axial piston pump series for next-gen hydraulic applications
Hydraulic systems & components
Moog has launched its new AXP Axial Piston Pump Series, a next-generation hydraulic solution engineered to deliver optimal performance, reliability and cost efficiency for industrial applications.

Read more...
Tuning into what your system is telling you
Hydrasales Hydraulic systems & components
Hydraulic presses can run like clockwork, but often it’s the things you don’t see, or hear, that carry the most telling signs of irregular system health.

Read more...
A guide to common hydraulic system contaminants
CT Hydraulics (Nqoba) Editor's Choice Hydraulic systems & components
Every engineer, machine designer and maintenance professional understands that the heart of any reliable hydraulic system is its fluid. But the moment that fluid is compromised, your system’s life expectancy and your peace of mind drop dramatically.

Read more...
New commercial and technical appointments at Veeam
News & Events Infrastructure
Veeam Software has announced two senior appointments in its South African business as it continues to invest in local market growth and partner and customer engagement.

Read more...
South African counter-drone system completes trials
Products & Solutions Perimeter Security, Alarms & Intruder Detection IoT & Automation
Pretoria-based military engineering company Centauri Technologies has announced that its TriAD counter-drone system successfully completed integrated, multi-layered C-UAS (counter-unmanned aerial system) capability trials in a vehicle-mounted configuration.

Read more...
Access as a Service is inevitable
Technews Publishing SMART Security Solutions ATG Digital Access Control & Identity Management Infrastructure
When it comes to Access Control as a Service (ACaaS), most organisations (roughly 90% internationally) plan to move, or are in the process of moving to the cloud, but the majority of existing infrastructure (about 70%) remains on-premises for now.

Read more...
Privacy by design or by accident
Security Services & Risk Management Infrastructure
Africa’s data future depends on getting it right at the start. If privacy controls do not withstand real-world conditions, such as unstable power, fragile last-mile connectivity, shared devices, and decentralised branch environments, then privacy exists only on paper.

Read more...
Access trends for 2026
Technews Publishing SMART Security Solutions RR Electronic Security Solutions Enkulu Technologies IDEMIA neaMetrics Editor's Choice Access Control & Identity Management Infrastructure
The access control and identity management industry has been the cornerstone of organisations of all sizes for decades. SMART Security Solutions asked local integrators and distributors about the primary trends in the access and identity market for 2026.

Read more...
CAA-compliant ground drone outsourcing
Surveillance IoT & Automation
South African mines, estates, utility companies, independent power producers, ports, municipalities and others can now own and operate a CAA-compliant drone dock ground station in just six to eight weeks.

Read more...
From digital transformation to digital sovereignty
Security Services & Risk Management IoT & Automation
As cyberthreats grow, data regulations tighten, and AI becomes central to economic competitiveness, countries are recognising the need to control and protect their own digital assets.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved