Clear knockout for diaphragm blowers

The base of this piston-blowers and diaphragm-blower comparison is our LD series. The LD series diaphragm blower was produced between 1990 and 1995 and was similar in construction to diaphragm models which are currently produced by other Far-eastern manufacturers today. The production of our LD series finished in 1995 due to bad experiences in the market. New blowers using our well proven linear piston principle have replaced the old style LD series.
altThe essential reasons for this finishing have been:
  1. The biggest demand for LD model spare parts was in summer. This means that the diaphragms were not resistant to heat and that they showed wear early when used at high temperatures. Especially during summer operation a failure of the blower stops the cleaning process which leads to unpleasant smells.

  2. 10% of all LD models used worldwide have had their spare parts replaced. With our linear piston pumps this rate is only 1%.This means that the life time for piston units is much longer than the life time for diaphragm units.



  3. Another feature of the linear piston pumps is their low noise level. Due to this low noise level the linear pumps need only a plastic housing, whilst diaphragm units need a metal housing to eliminate noise. Plastic housing do not need any additional earthing and are not subject to corrosion.

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  5. Some years ago the brown material on the piston of linear units was replaced with black material. This change took place on all models except the LA-28B. All pistons have two slits in the friction part. These slits are the base for judging the friction degree, and so whether the piston needs changing. The following curve shows the friction rate between brown and black material. It is recommended to replace the piston when these slits have almost disappeared. This condition is reached when 0,012mm are worn out, which refers to a continuous rate condition running time of a minimun of 25.000 hours. The blower must run for 250.000 hours to let these slits disappear completely. This extreme lifetime is not achieved by diaphragm units.


We hope that this statement clearly illustrates the features and resulting benefits of using our linear piston models. We look forward to you having reliable and trouble-free plant.

Gain the cutting edge!

As a supplier of high quality Magnetic Based Drilling Machines to industry it is our pleasure to inform you of our latest tool products which we have recently launched in the UK. We are enclosing details of our product offering for your perusal which we hope will be of further interest.

Why should you read on? Well, we have just released four Magnetic Base Drilling Machines under our ‘ATRA ACE’ brand but with a key difference – they are specifically designed for use with TUNGSTEN CARBIDE TIPPED (TCT) cutters.

Why use TCT over HIGH SPEED STEEL (HSS)? That’s easy, they are capable of lasting well over 3 times the life of an ordinary HSS cutter*…….but there’s an even bigger advantage, productivity is also vastly increased!

How? With a faster operating speed of the specially designed Mag Drills. They operate at an rpm of around 3 times that of a standard HSS machine and therefore can produce around 3 holes in TCT to every 1 in HSS.

*It is estimated that for every 300 inches of material depth cut with a HSS Cutter an equivalent TCT cutter can perform 1000 inches.

TCT is also well suited to hard spots in mild steels (which can often damage or break HSS) and is also ideal for higher grades of steel including those used within the rail industry.

Not convinced? Then request a demonstration video, or better still we will come to site and demonstrate the machines at you or your customers’ premises!

Are there more benefits? Sure, the Manual Machines, WOJ-3200 and AO-5575 are fitted with the most advanced motor overload protection system on the market. It virtually eliminates motor burn outs. This new feature is a breakthrough in the manual drill industry. This technology displays the current drill status via the LED load indicator.

End users will experience a cutting edge drill management system designed solely around saving time and money in replacement parts and cutters in addition to reducing user fatigue and downtime.

As the drilling load increases, the load indicator will change in colour from green to orange to red. In addition, if excessive feeding force is applied, the load indicator will rapidly blink red and the rotation of the drill motor will slow down and temporarily stop (without overloading the motor). If the load is released while the load indicator is blinking red, the drill motor will resume its rotation.

There are also two Automatic Machines, WA-3500 and WA-5000 with built-in coolant supply system and built-in failsafe protection to improve machine and cutter life.

All of the machines offer the Nitto Kohki ‘ONE-TOUCH’ cutter replacement system which is self-centering and has a tool-less chuck for ease of use. They are available in both 110v and 240v.

For further information, technical assistance or site demonstration of any of the enclosed products please do not hesitate to contact us. Seeing a machine operating is often the difference between getting the sale and not!
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