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Welcome to the Hydraulic Specialties News Page. We will endeavour to provide you with relevant technical information and what's new as far as products and Hydraulic Specialties 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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Oct 2014

Hydraulics Overheating?

As summer approaches the extra heat in the atmosphere puts more pressure on hydraulic systems.

Hyspecs recommends, as operating temperature is 60 degrees Celsius. Do not test with your hand, as even touching for a split second is too hot. Instead use the temperature gauge to get an accurate reading.

Eaton recommends a maximum system operating temperature of no higher than 82 degrees Celsius. Keeping your system cool will increase the life of your system and save you money in the long run.

In a perfect hydraulic world all energy put into a system could be transferred to the job at hand, whether it is a cylinder, motor or some other hydraulic machinery. However we are lucky if we get 65-75% of the input energy turned into useful work. The rest gets turned into heat, noise and vibration.

The loss of power can be attributed to many things:

  • High pressure drop across hoses, orifices and valves
  • Mismatched motor sizes in a pressure compensated system
  • In-built inefficiencies in pumps and motors
  • Poorly designed hydraulic systems 

Try as we may to get the system 100% efficient we will never do it, so we are usually stuck with two options to overcome heat:

Air _oil _coolers2

 

 

 

 

 

 

 

 

 

 


  • Build a large oil tank to dissipate the heat. This is usually the easiest and cheapest option if designing a system from new. Hyspecs recommends a tank size of at least 2.5-3 times the maximum flow of oil in the system (not applicable to closed loop systems where the designer can get away with a much smaller tank). 
  • Install a hydraulic oil cooler cable of cooling approximately 30% of the system input power. Oil coolers typically come as either air/oil or water/oil variety. The air/oil coolers are pretty much the same as a car radiator with either an electric or hydraulic fan blowing over the fins to cool the oil flowing inside the radiator. Oil/water coolers are designed to have oil running through a large outer tube with a seperate series of smaller tubes running inside this, containing flowing fresh or slat water which carries the heat away from the oil.  Emmegi Water cooler

 

 

 

 

 

 

 

If you need help with an overheating hydraulic system call Hyspecs today on 1800 497 732 or email us on hyspecs@hyspecs.com.au

For specification and pricing information on Hyspecs range of Emmegi Oil Coolers please click here.

For specification and pricing information on Hyspecs range of Oil Reservoirs please click here.

Streamlining Orders

Hyspecs have new email addresses just for orders.

Do you have an account and you wish to place an order? 

We have set up the following email addresses for you to use -

melbourne.orders@hyspecs.com.au For all Australian orders

auckland.orders@hyspecs.co.nz for all North Island, NZ 

christchurch.orders@hyspecs.co.nz for all South Island NZ orders 

Your order will be sent to our sales teams to action. For all other enquiries you can email your Sales Engineer direct or hyspecs@hyspecs.com.au (AU) and hyspecs@hyspecs.co.nz (NZ).

Engineer Profile - Craig Kemp

Project engineer Craig Kemp says the thrills and excitement of hydraulic engineering are with the large projects undertaken by Hyspecs. Recruited into the Hyspecs team in January 2007, Craig's primary work focus is managing projects in Australia and New Zealand as well as quality control and company process improvements.

Hyspecs are proud of their team here at Hyspecs. This year we have been profiling various staff in Engineering News.

"With our staff of highly proficient hydraulic engineers like Craig, Hyspecs is able to offer customers a complete system solution," Mr Krebs says. "To ensure that our customers' expectations are met, all projects go through a design review process before a final proposal is presented to the customer. The types of projects that we have worked on are varied, ranging from simple hydraulic power units to large marine systems for controlling A-frames, deck winches and cranes."

Read full Engineering news article hereCraig Kemp Project Engineer

Hydraulic Training Seminars 2014 - Photos

Both Christchurch (NZ) and Auckland (NZ) Training seminars sold out again this year. People for the Auckland seminar came from wide and far - Dubai, Gisborne and Wellington.

seminar Auckland

For the Christchurch seminar we had people from the Hawkes Bay, Nelson through to Dunedin. 

We had fun with lively discussions on hydraulics, how the different components worked, why hydraulics fail and how to get longer life out of machinery and general fault finding. Our hydraulic training seminars are such a mine of information on hydraulics that even our competitors attend! 

Some of the highlights - Hands on learning with parts and cross sections of parts passed around the class, stories of Luigi. The tour of Hyspecs products - for some it was like being a kid in a candy factory!

In Auckland another highlight was the tour of the Hytech manufacturing facility where our Manifolds are designed and manufactured.

In Christchurch the test equipment tour had some service engineers wheels spinning.

Some of the feedback we received "my knowledge has greatly increased and taken another persons perspective", "was excellent, can now apply this knowledge at work in practical applications", "The Topics covered gave a good general base on hydraulic components, applications and systems". See more photos on our Face book page

Hytech Tour Si _class 2014

May 2014

Hydraulic Motors - how stuff works

Hyspecs provides a full range of hydraulic motor with a brief explanation of each hydraulic motor category below. Click the headings for more detailed information.

Gear Motor

Consit essentially of two intermeshing toothed gears enclosed in a common housing.

Gerotor/Geroler Motor

The H series motor uses a Gerotor while the rest of the Char-Lynn motors use a Geroler.

Piston Motor

Axial piston Motors are displacement machines in which the pistons are arranged in parallel to the axis of rotation of a cylinder barrel.

Swash-Plate Motor

In this version, the cylinder barrel is driven and, as a result, the pistons which are located and guided in the barrel rotate with it.

Bent Axis Motor

With this type of hydraulic motor, the cylinder barrel is driven by the pistons which in turn are themselves driven by the drive flange.

Wobble-Plate Motor

With this type of hydraulic motor, a so-called wobble plate is driven by the input or drive shaft.

For a more detailed description of each of these motors please visit our "How stuff works" motor series page or contact one of our Hyspecs Engineers 1800 497 732.

Service Challenge - Another day in the office

The stats
* 5" bore
* 3" shaft
* 2½ m stroke 4 tonne bin
* 1 Service Tech

The problem

* Piston comes off end of rod.
* Bin won't come off in this position!
* The question How the @#*# are we going to do this?!

The solution

* Get big crane in to get heavy bin off so we can remove the bent bit!!

For all your Hydraulic Servicing call Hyspecs 1800 497 732 and speak with one our service Engineers. They are ready for your challenges. (click on images below for larger image)

Piston Off RodBENT-MAIN-LIFT-CYLINDER-Cranesml 2S=

Feb 2014

Hydraulic Winches

Boat Hydraulics Including Remote Control of the Hydraulic Winches. Hyspecs was contracted by a major North Island boat builder in NZ to supply the hydraulics for a 24m catamaran work boat.

See the winches in action on youtube http://www.youtube.com/watch?v=-B-BYu0p9_0

In order to make this a multi purpose work boat, Hyspecs had to design the hydraulic system to seamlessly run various deck equipment simultaneously.

Hydraulic Anchor Winches

The Power house

Motor

Comer Planetary Gearboxes

Hyspecs is a distributor for Comer SOM planetary reduction boxes. With the modular assembly design, multiple input, output and reduction ratio options can be selected to fit in with your requirements.

Comer Planetary GearboxPG planetary gear units are divided into 21 basic groups depending on the different torques that are to be transmitted to the output shaft, which can vary from 50 to 65000 Nm.

In fact, the product modular construction permits the coupling of bevel gears, worm gears, hydraulic brakes and a variety of input shafts to the planetary units, as well as providing for a wide choice of coupling flanges for hydraulic or electric motors.

Hyspecs currently stock a range of PG and PGA 100 to 700 series reduction boxes with a lead time of approximately 1 week.

For detailed specification information, click here to access the Comer SOM website data pages. Browse our range in the Hyspecs online shop here.

For more informaiton talk with our Sales Engineers today on 1800 497 732 or send us an email.

Online Shopping @ Hyspecs

Online Shopping HyspecsOnline shopping is available at www.hydraulicspecialties.com.au. It's easy to use and you can either search by category, brand or by using the built in search engine, you can find a product directly by part number or description.

The site is available 24/7 so if you've run out of time during the day to order that part, you can always logon after hours, place the order and we'll get it dispatched first thing the following morning. Click here to shop online now.

 

 

Hydraulic Training Seminar

We've set the date for this years hydraulic training seminar in Melbourne. Brush up on your hydraulic knowledge or send an employee along to the 2-day seminar. Sign up now:

Seminar 2013

Join Hyspecs for the two day seminar covering everything from the basic principles of hydraulics to fault finding and failure analysis. Learn how to design a hydraulic winch circuit, size components and draw a circuit. Just turn up with an open mind and lots of questions! Click here for more information on the Hyspecs website.

Click here to download the registration form.


Mar 2013

Hydraulic Valve - Manual & Electric Control

Q95-75 With Small Coils 250x 350Hyspecs stocks the Galtech range of cast iron mono-block valves which can be controlled manually and electrically. Galtech have just released a new version of solenoid for the largest valves in the range, the Q95 and Q75. With a reduction in size, the coils can now be installed on all adjoining sections. The Q95 (1") and Q75 (3/4") come in a 1 to 6 bank configuration. These valves have been very popular where electric control is required with a very durable manual backup in place. 

* One to eight bank valves 3/8"-1/2"
* One to six bank valves 3/4"-1"
* Pressures up to 350 bar, with built in
   relief
* Flows to 120 l/min with good
   featherability
* Power beyond and detent options
Electric solenoid option with manual
   override for all sizes
* Hydraulic, pneumatic and remote cable actuator options
* Dual axis lever option for double bank valves
* Cylinder, motor, single and double acting spools, open or closed centre

For more information and pricing click here. 

Hydraulic Power Pack Manufacture

Hydraulic _system _hydraulic _power _pack _custom _madeHydraulic power packs are used to provide hydraulic power via oil flow and pressure. In their most basic form they consist of the following:

1. Prime mover - AC or DC electric motor or a petrol or diesel engine

2. Hydraulic pump

3. Bellhousing and coupling to join the prime mover and pump

4. Relief valve to protect the pump and circuit

5. Tank and oil

Hyspecs have available off the shelf modular DC hydraulic power pack. Hyspecs can also manufacture hydraulic power pack to your requirements. From small hydraulic power pack driving a simple ram to large complex hydraulic power pack driving components in industrial sized power stations. 

Read more about Hyspecs hydraulic power pack capabilities online here...