News & Events - RYCO Hydraulics
Understanding Filtration – Fluid Cleanliness & Filter Efficiency

In part 1 of this series on Understanding Filtration - Viscosity and Temperature we covered the significant impact that temperature has on the viscosity of an oil, which in turn affects its performance during filtration and lubrication. There are other factors that must be taken into account when it come to hydraulic filter selection. These variables will affect each other. To select the correct filter you need to establish the expected fluid viscosity as it varies with temperature. The following must be known: The fluid type The fluid temperature at start up The fluid temperature during normal operation Other important factors are: The required fluid cleanliness target The efficiency rating of the filter Fluid Cleanliness Targets When discussing fluid cleanliness, we refer to ISO 4406 as a method of counting and quantifying contamination in a system. The chart above shows recommended ratings for common system components. Many hydraulic manufacturers publish required fluid cleanliness levels for their equipment. Guide to Filter Placement The table below can be used as a guide for filter placement in a system. Each of the blocks ...

Understanding Filtration – Temperature and Viscosity

Understanding Filtration in Hydraulic Systems When adding filtration to an hydraulic system, it’s important to understand the role of viscosity, pressure drop, fluid cleanliness and filter efficiency (beta ratios) in the overall performance of the system. Temperature is also a key factor in determining the effectiveness of hydraulic filters. What is Viscosity? Viscosity is the measure of the resistance of a fluid to deform under sheer stress. It is commonly perceived as thickness, or as a resistance to pouring. It may also be described as a fluid's resistance to flow, or a measure of fluid friction. Water has a low viscosity, and honey has a high viscosity. However, viscosity can be affected by changes in the fluid temperature. For example, when heated, honey will flow more easily. Understanding the behaviour of a fluid's viscosity is an important part of understanding filtration technology. Pressure Drop Pressure drop is a measure of how much pressure is required to push a fluid through a restriction, or 'orifice'. A filter element acts as a restriction when fluid is flowing through it. The level of ...

Who are the Type Approval Surveyors For RYCO’s products?

Approval bodies (Surveyors) RYCO works with a number of approval bodies, or surveyors, to obtain type approvals for RYCO hydraulic hose assemblies, and maintain best practice quality management system standards. Following is information about the surveyors who are currently providing type approval for RYCO products, using their own words. Marine Approval Bodies American Bureau of Shipping Mission Statement from the ABS website: "The mission of ABS is to serve the public interest as well as the needs of our clients by promoting the security of life, property and the natural environment primarily through the development and verification of standards for the design, construction and operational maintenance of marine-related facilities." DNV GL Statement from the DNV GL website: "DNV GL’s shared roots stretch back to 1864, when Det Norske Veritas (DNV) was founded as a membership organisation in Oslo and GL was formed out of a desire to achieve transparency. Today DNV GL is a globally leading quality assurance and risk management company. Driven by their purpose of safeguarding life, property and the environment, DNV-GL enables organisations to advance the safety ...

Type approvals for hydraulic hoses and fittings and why they matter

What is a Type Approval? Type Approval is granted to a product that meets a minimum set of regulatory, technical and safety requirements. Generally, type approval is required before a product is allowed to be sold into a particular country or industry sector, so the requirements for a given product will vary around the world. The requirements can also differ from industry to industry. For example, SAE J517 is a Society of Automotive Engineers standard that tells a manufacturer how to make a variety of hose products. This does not necessarily mean that a hose will automatically be able to work in that industry. It may still require a TYPE APPROVAL. Marine Approvals Marine Surveyors As maritime vessels will always work in an environment of risk, maritime insurers use marine inspectors as expert assessors to report on the condition of the vessels being insured. A marine surveyor is a person who conducts inspections or surveys of marine vessels to assess, monitor and report on the vessel's condition, and on the condition of any products that have been installed within them. ...

How to use the RYCO proof test rig – Machine Operation

In this second part of this series on impulse testing, we discuss how to use the proof test rig to safely test your hydraulic equipment set up. Machine Operation Connect the assembly Prepare the connection. Select an adaptor to suit your hose assembly and fit it to the rig. Ensure you're not damaging any thread at this point. Fit your hose assembly to the rig. Use two spanners to tighten the hex, so as to not damage any parts. NOTE: When fitting an adaptor, it is vital that the connection is leak free. When the rig creates a high pressure, it does so with a minimal amount of fluid. A small leak will limit the amount of pressure that can be produced. Purge the hose Leave the other end of the hose uncapped. Open up the High Pressure valve by turning anti-clockwise, and open up the pre-fill valve by turning it to the "'on" position. Allow the fluid to vent through the hose. Cap the hose assembly Elevating the hose will ensure that all of the air is purged from ...

How to use the RYCO proof test rig – Safety & Controls

In this first part of this series on impulse testing, we discuss the importance of safety procedures and the controls that are available on the RYCO proof test rig. Supporting Documents for the RYCO Proof Test Rig Refer to these supporting document to ensure you fully understand the process and safety measures required. RH-SWP-9 Safe Work Procedure - Proof Test Rigs RH-Wl-13 Work Instruction - Internal Proof Pressure Test SAE J343 Test and Test Procedures for SAE IOOR Series Hydraulic Hose and Hose Assemblies AS 1180.5-1999 Methods of test for hose made from elastomeric materials - Hydrostatic pressure Safe Work Procedure Before operating the machine, refer to the latest edition of RYCO Safe Work Procedure RH-SWP-9. (Step 1 - Preparation) Prior to switching on power, check the condition of the power cord to ensure that the plug is secure, that the cord is not damaged or frayed, and that a current electrical safety test tag attached. Ensure the electrical plug is securely fitted in the socket. This applies to both the Air Compressor and the Test Rig in general. If ...

Soft seal hydraulic connectors and their applications

Soft seal connectors use an elastomeric object to create a leak-free seal, they can take the form of bonded washers, encapsulated seals and o-rings. There is a wide range of soft seal connector types, including BSPP, DIN, ORFS and SAE. BSPP British Standard Pipe Parallel Country of origin: Britain Thread angle: 55 degrees (Whitworth) BSPP threads are also an elastomeric connector. A soft seal is used to ensure a leak free joint. RYCO use an O-ring and metal back-up ring or an encapsulated seal to complete the joint. In port applications, the seal is made by an elastomeric seal at the base of the thread, and not on the machined seat. BSPP port threads are very commonly used in Australia, but are becoming less preferred. BSPP threads can also be sealed by other methods such as an encapsulated seal or a bonded washer. When a bonded washer is used, the shoulder of the thread must be machined to a cone to keep the washer away from the edge of the thread. The photo below shows an encapsulated seal. This sealing ...

Territory Manager, Queensland, Australia

The primary objective of the Territory manager is to achieve the established sales and financial targets of their assigned customers and/or regions. Analysing and establishing short, medium and long term plans for their customers and regions, including: distributor network; OEMs; contracts for direct supply of products and services; End Users such as mining; and RYCO 24•7. Achieving business growth in designated region with existing and new products and achieve business growth in designated region with new and existing customers.    For further information or if you would like to apply for this position please email HR@RYCO.com.au    ...

Metal seal hydraulic connectors and their uses

Metal seal connectors use profiled metal surfaces on the connector to form a seal. There are many different types of metal seal connectors, including JIC, DIN, BSPP and JIS, NPSM, and they are used across many industries. JIC Joint Industries Council Country of origin: USA Thread angle: 60 degrees (UNC / I-INF) Seat angle: 37 degrees JIC threads are parallel. The thread used is a unified thread, either course; I-INC, or fine; UNF. JIC are the most popular hydraulic connector form due to their versatility. They can connect to both hose and tube. When connecting to inch tube, it needs to be flared and a tube nut and sleeve, (RYCO part number S6), are required. Metric - DIN 2353 Deutsche Industrie Normen Country of origin: Germany Thread angle: 60 degrees (DIN 3853) Seat angle: 24 degrees They have a 24 degrees internal machined seat. These threads are becoming much more common worldwide. Like the JIC connector, there are DIN threads that can connect to both hose and tube. Unlike all other thread types, there are three sub-groups within the DIN ...