Welcome to the Hyspecs News Page. We will endeavour to provide you with relevant technical information and what's new as far as products and Hyspecs is concerned. We also run competitions from time to time with generous giveaways! To view a list of all previous Hydrafiles click here.

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Sep 2011

Poclain Selector Valves, HYTECH-Hydraulic Manifolds, Competition Winners

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.

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Jul 2011

Competition, Hydraulic Training Seminars, Technical Corner

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.

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Jun 2011

HYDRO LEDUC Distributors, Trade Me Specials, Staff Updates

Hyspecs has been appointed the New Zealand distributor for the Hydro Leduc range of bent axis piston motors and pumps. HYDRO LEDUC is a specialist in the design and manufacture of piston pumps, hydraulic motors, hydropneumatic accumulators, and customized hydraulic components.

Founded in 1938 by Rene Leduc the companies activity was aeronautics, building Leduc aircraft and designing and manufacturing various hydraulic components in airplanes. In 1958 the company converted from aeronautics to hydraulics and then excavator hydraulics in 1968. They now also offer a range of hydraulics for the transport industry and launched their first bent axis motors in 2005.

M Series (ISO) Fixed Displacement Bent Axis Motor

Available in displacements from 12 cc to 126 cc, M series motors are suitable for intensive long duty requirements. Designed for both mobile and industrial installations. Typical applications are:

* Vehicle transmissions
* High power crushers
* Forestry equipment
* Heavy duty winches

Maximum pressure continuous / peak: 400 / 450 bar. Continuous maximum speed 3400 rpm to 8000 rpm, dependant on the displacement.

These motors are built to suit all applications to ISO standard 3019/2.

Also available in the MA (SAE), MSI (semi-integrated) and MXP (DIN) series. For more detailed information download the presentation brochure here.

W Series Fixed Pump / Delta Series Variable Pump

The W series bent axis piston pumps from HYDRO LEDUC are of the most modern design, and exist in displacements from 12 to 108cc.

These W pumps were developed to satisfy the needs of both the industrial hydraulics market: hydraulic power packs, units for machine tools etc. and of the mobile market: construction equipment, drilling machines, mobile cranes etc.

Designed for open loop hydraulic circuits, the DELTA range of variable displacement pumps allow optimized performance for a given application. The flow supplied by the pump is automatically regulated according to the hydraulic load. This guarantees:
* Minimized energy consumption
* Minimized heating of fluid
* Reduced noise levels

Download more information on the W series fixed pump and the Delta series variable pump.

For more information and to see how HYDRO LEDUC bent axis motors and pumps can help your business please talk with our sales engineers today. Call using the numbers listed in the left hand column or drop us an email by clicking here.

To visit the HYDRO LEDUC website click here.

Trade Me Specials

Last month we introduced our new range of CMG 3-phase electric motors that we will be stocking and selling go forward. This has left us with a number of Hengshui 3-phase electric motors that we would like to move on quickly.

The motors are listed on Trade Me and priced at between 50%-70% off normal list price. These motors are going cheap! Dont be put off by the cheap price though, these motors are top quality. We have been selling them for 7+ years with no problems at all. Constraints put on us by the supplier have forced us to look elsewhere.

The motors are all 4-pole, foot and flange with standard metric frame sizes. More specification information is available on the TradeMe listing or call our sales engineers using the phone numbers on the contact us page.

Below is a list of all the motors we have for sale. Click on the listing link to take you directly to the listing on TradeMe, or click here to view all the motors at once.

Listing	Power kW	# For Sale	Buy Now
384518638	0.75	4	$ 200.00
384553748	1.5	1	$ 220.00
384555769	5.5	5	$ 300.00
384553760	11	5	$ 600.00
384553751	22	2	$ 1200.00
384573844	11 (MEPS)	5	$ 1200.00
384573912	37 (MEPS)	3	$ 2000.00
384573843	45 (MEPS)	1	$ 2200.00
384573928	55 (MEPS)	1	$ 2600.00

 

 

 

 

 

 

 

 

 

 

MEPS - These electric motors meet all requirements under the current high efficiency standard (MEPS) AS/NZS 1359.5:2004. All other motors meet and exceed the old AS/NZS 1359.5:2000 minimum energy ratings standard and were imported/registered prior to the new high efficiency standard being introduced.

Email us a question regarding the Hengshui electric motors for sale on Trade Me.

Staff Updates

In this Hydrafile we introduce two few new faces that have joined our Christchurch branch in the past 6 months and an Auckland based sales engineer that slipped through the Hydrafile cracks for the past year.

Steve George: Sales Engineer for Otago, Southland and parts of Christchurch. Steve has a Military background having spent nearly 14 years in the RNZAF initially as an Aircraft Technician followed by 5 years as a Flight Engineer aboard C130 transport aircraft. During his time in the Air force Steve gained experience in aircraft hydraulic systems and components, including fault finding and overhauls. He has also completed a Diploma in Mechanical Engineering. Steve joined Hyspecs in early 2011.

Therese Sefton: Office Administrator. Therese comes from a background of office admin in the in the agriculture and viticulture industries. Therese joined the Hyspecs Christchurch team at the beginning of 2011.

James West: Sales Engineer for the Hawkes Bay, Gisborne, North Shore and parts of Onehunga and Penrose. James Initially trained in the Royal New Zealand Air force gaining National Certificates in Aeronautical engineering and Aircraft servicing. Having gained over 13 years engineering experience both domestic and internationally, 2 of which employed at Marshall Aerospace Uk and 8 years at Air New Zealand. James joined Hyspecs in August 2010.

To view more staff profiles visit our website by clicking here.