News

Staff News

Hyspecs bids farewell to Gary Holt, Branch Manager of Christchurch. After 3+ years of dedicated service to Hyspecs, Gary is heading back to residence in Prince Edward Island, Canada. Gary will be pursuing Hytech manifold sales across Canada for our NZ manufacturing division. "I would like to thank all the staff at Hyspecs for their support and resources shown to me over the last 3+ years, to Hyspecs Christchurch, who have endured much over the last 18 months, you have grown stronger and I thank one and all for your friendship and support."

Owen Ladbrook will be taking the reigns from Gary and is looking forward to the challenge that will bring. Owen has 15+ years experience at Hyspecs and has spent that time in technical and sales engineering roles.

Hyspecs Auckland has 3 "new" sales engineers to introduce:

 Rory Antony                    Jon Stone                       Justin Smith

Rory joined Hyspecs in mid 2011 and comes from a varied background including 7 years with the NZ Air Force and 3 years with Air New Zealand.

Jon joined Hyspecs in 2011. A Fitter and Turner by trade, Jon comes to us with 4 years experience in servicing mobile hydraulic equipment and a large knowledge of hose and fittings.

Justin holds a Bachelors Degree in Mechatronics Engineering. Justin comes from a diverse background spanning sales, accountancy and debt collection. He joined Hyspecs late 2011.

Click here to read more staff profiles.

Oil Reservois

Where possible Hyspecs likes to provide "Kiwi Made" products. Our NZ made steel oil reservoirs range in size from 100 to 200 litres. For smaller tanks we import the aluminium range of OMT.

The NZ made steel tanks come in 100, 150 and 200 litre (75%) nominal volumes. They are manufactured from mild steel plate with all external welds TIG/MIG welded, continuous, no slag and checked by liquid penetration. The outward top flange comes with Nylock nuts and bolts and the sloped bottom floor allows easy draining via a removable stteel plug. Sealon adhesive tape provides an easy to install dust proof and water proof seal and the reservoir is fully grey primer etched inside and out. The reservoir also comes witih pre-drilled bolt down holes and baffles are available on request. Click here to download more information and pricing.

Hyspecs also stocks the OMT range of aluminium oil reservoirs in 16, 25, 55 and 75 litre (75%) capacities. They are manufactured from cast die aluminium and come complete with lid, gasket and drain plug. The lid is left blank to allow the designer to cut appropriate holes for the electric motor, filters, filler/breather and any other bulk head accessories that may be required. Click here to download more information and pricing.

All reservoir sizes are in stock now and you can purchase the entire range online at our website here.

Scoobi

So what's a Scoobi? The acronym Scoobi was coined by one of our service engineers a few years back and stands for "Self Contained Old Oil Beautifying Implement". The Scoobi was designed to transfer oil from one vessel to another, whilst extracting contamination from the oil in the process. Typically used for transferring old oil from a tank that needs cleaning, during system maintenance and for filling tanks in new systems. Even new oil contains contaminates so it is recommended that a new drum of oil be filtered before going into the tank. The Scoobi provides a clean and easy way of doing this.

Features and Benefits
• Dual filtration in and out, 10 micron, useful for separate water and particle filtration ensuring ultra clean oil
• Gauge for indication that filter needs changing
• Rubber tyres and contoured handgrip for manoeuvrability and easy transportation
• IP65 rated on/off switch
• Assembled from locally sourced components for ease of service
• Manufactured by Hyspecs
• Relief valve protection
• Approximate dimensions 1m(h) x 0.5m(w) x 0.4m(d)


Specifications
• Transfer oil at 20 l/min
• Powered by a single phase 0.75 kW electric motor with lead & plug
• Oil is pumped via a Galtech gear pump

Nett price for the Scoobi is $3300 + GST. We currently have Scoobi's in stock and lead time from ordering if not in stock is typically 5 working days. We also hire out our workshop Scoobi at the rate of $50 per half day and $100 per day plus filters. Hose assemblies can be manufactured to your specifications.

Click here to download the product brochure or buy online now.

Poclain Selector Valves

Hyspecs now stocks the Poclain KV range of electronic 3 and 6 port selector valves.

Electronic selector valves are often used in a situation where a new piece of hydraulic equipment has been added to an existing machine. For instance a 6/2 way valve can divert oil from the tilt function on an excavator to another auxiliary function, at the press of a button.

Stocked valves range in size from 3/8" to 1" (BSP ports), as either 12 or 24 VDC with a manual over-ride option on all. An external drain port is drilled as standard, which allows higher pressure and/or flow in most cases. This port can be plugged if 
not needed. All valves are open on changeover.

Specification Information:

For more information download the Poclain catalogue by  clicking here (see pages 37-39 (3port), 77-87(6-port)).

Our sales engineers are available to offer expert guidance on the correct method for applying these valves to your application. They can be contacted by phone (see the numbers on the contact us page) or email at hyspecs@hyspecs.co.nz.

HYTECH-Hydraulic Manifolds

Hytech is the manufacturing division of Hyspecs NZ, located within the same building at 32 Crooks Road Auckland. Hytech manufactures standard & custom hydraulic manifolds. 

Hydraulic manifolds are used in conjunction with cartridge valves to provide an integrated circuit where complex functions can be performed, equal to that of most conventional control components. The manifold itself is usually some form of aluminium alloy or steel with cavities machined to accept the cartridges. The cartridges control the flow and pressure of the oil to the machines various hydraulic components such as motors and cylinders.

The advantages of this technology become clear once it is examined in more depth

1. Complex functions can be performed by one integrated circuit. This can replace many discrete components.
2. Hosing or pipe-work is greatly simplified, resulting in lower costs and fewer potential failures
3. Pressure, return and function ports can be positioned where most convenient for the end user. Customising the block to the particular machine.
4. Circuit confidentiality is enhanced, since the design cannot be easily traced
without resorting to exotic X-Ray methods.
5. Installed costs are usually lower than discrete components.
6. Skilled technicians are not usually needed to install the circuit.
7. Maintenance is simplified due to rapid cartridge interchange-ability. Failure of the block itself is rare.
8. Circuit versatility industry common cavities allow cartridges with differing functions to be substituted in the block. Therefore altering the circuit to customer specific requirements.
9. The completed circuit is usually lighter than individual components.
10. The completed circuit is usually more compact than individual components.
11. Virtually any circuit can be incorporated into a cartridge block.

Hytech provides Hyspecs with standard hydraulic manifolds that are used in every day circuits, such as relief and counterbalance valves. However Hytech is also geared to provide one off hydraulic manifolds for systems seen in super yachts or factory production lines. Hytech can also provide original equipment manufacturers (OEMS's) with large runs of hydraulic manifolds, fully assembled with cartridge valves and each individual unit tested before shipping to your assembly plant to be inserted into your machine. At Hytech literally no job is too big or small.

For more information download a Hytech brochure by clicking here or visit the Hytech website by clicking here.

Competition Winners

The Hyspecs super beanie give away certainly created a lot of interest with heaps of entries; the timing was perfect with winter really starting to make its presence felt in late July.

I had an excited call from home whilst I was at work - it was snowing in Pukekohe! That certainly doesn't happen very often and the entire country was not immune to the polar blast. I've just been away for a "summer" holiday in Rarotonga and the locals were telling me that they also got hammered by the "NZ" southerly; huge swells went right over the top of the reef causing damage to parts of the southern coast. Talk about crazy weather.

As so many correct answers were received, we decided to be a bit more generous and gave away more than 5 beanies. Just remember next time it's never too late to email your entry in. Congratulations to the following winners: Gavin, David, Holger, Alan, Ed, Chris, Grant and Mike. Keep an eye out for next month's Hydrafile competition.

Competition

With winter finally, well and truly upon us, now is the time to invest in a new beanie. If you don't like spending money on that sort of thing don't worry we are here to help. Hyspecs is giving away 5 super beanies this month. These aren't just any ordinary beanies either. Worth $40 each, they are made of pure 100% NZ wool with a soft and cosy fleecy lining (so no itchy feeling). You won't get cold ears wearing these hats!

The first 5 people to email me with correct answers to the following questions will get a beanie:

1. What is the Hyspecs list price and displacement of a 101-1035-009 H-Series Char-Lynn motor?

2. What was the name of the fishing vessel that Hyspecs converted, from a purse seiner net fisher to a long liner?

3. What towns and cities does Hyspecs have representatives based in? Hint: we aren't just in NZ.

Hint: the answers can be found on this website.

Please email your answers to hyspecs@hyspecs.co.nz All winners will be notified by return email and the beanies will be sent via NZC.

Hydraulic Training Seminars

Brush up on your hydraulic knowledge or send an employee along to help with your business. The Auckland seminar has been scheduled for the 21st-22nd of October and the 27th-28th of October for Christchurch.

Book your spot on the course by downloading and filling out the registration form for the Auckland seminar here or the Christchurch seminar here.

This two-day seminar offers you an introduction into hydraulic components and their operation. Subject matter covers generic types of pumps, motors and valves and the course content will provide you with an understanding on how these components operate, are applied and conditions that may lead them to fail.

The information presented in the seminar is combined and used in a winch circuit design that is carried out with parameters provided by participants. This allows you to see an example of basic circuit design and component combinations.

Basic fault-finding is also covered to assist you with the emotions of lost money, time and production involved with on-site problem solving. Looking at problem solving from another angle can help you reduce your customer's downtime.


All topics are presented in an open forum and we welcome you to ask questions and participate in topic discussions. This provides the opportunity to hear and share real life experiences that relate to the topic being discussed. For more information on the course content download the Programme from here.

The cost of the two day course is $550 + GST and this includes all course material, lunch and refreshments for both days.

To register for the course please download the form for the Auckland seminar here or the Christchurch seminar here. Print this off and fax/post back to us as soon as possible. Alternatively just give us a call using the numbers in the left hand column or email us by clicking here. Attendee numbers are limited so places are allocated on a first come first serve basis.

Technical Corner

The Compressibility and Thermal Expansion of Hydraulic Oil

We normally treat hydraulic oil as an incompressible fluid and do not consider temperature variation in basic system design. However the important properties have to be put into consideration when a large volume of high pressure oil exists and/or temperature variation is over 30°C. We normally treat hydraulic oil as an incompressible fluid and do not consider temperature variation in basic system design. However the important properties have to be put into consideration when a large volume of high pressure oil exists and/or temperature variation is over 30°C.

The effects of compressibility and thermal expansion are expressed by the Equation of State. There are many such different equations, more or less complicated, but we shall use here a very simple one which is entirely satisfactory for our hydraulic system design. It can be represented mathematically as follows with the volume variation delta V, the volume V, the pressure p and the temperature variation delta T

delta V / V = - p / B + delta T / Txp

B is the compressibility modulus and it is significantly reduced by small amounts of air carried by the oil, for instance in the form of bubbles, but an acceptable approximate value for technically well deaerated oil under 500 bar would be

B = 15,000 bar (or 220,000 psi)

This value of the compressibility modulus signifies that the volume reduces by only 1% when applying a pressure of 150 bars.

Txp is a constant of the dimension of the temperature which describes the thermal expansion, a typical value of which would be

Txp = 1,500 °C

It is to be noted that above equation of state is valid only until about 100°C. For example, with a temperature increase of 45°C, the oil obtains about 3% increase in volume if the system pressure is quite low.