Monday, June 27, 2011

Another Cushyfloat Application

I found out about yet another application that utilizes the multi-purpose vibration control design of the Metalastik Cushyfloat.  I had a gentleman from a oil field call about replacing some mounts on his compressor engine that is used to pump the salt water solution during the oil and gas extraction.

He was happy to find that we are a stocking distributor of these vibration isolators.  Many times, you will not recognize the need to replace vibration isolators until they actually fail.  This typically creates a situation where you have a machine down that needs to be fixed in a hurry.  This is where we come in.  Mission Sales and Supply has recognized this need and has a vast inventory consisting of oil field needs from vibration mounts, to o-rings, to gaskets.

If you have a machine in your company that has unwanted vibration, give us a call, more than likely we have the solution.

Wednesday, June 8, 2011

Cushyfloat - Great General Purpose Anti-Vibration Solution

Our top sell for Trelleborg AVS is series of vibration isolators known as the Metalastik Cushyfloat.  These vibration isolators are designed to provide effective isolation of vibration and noise in both mobile and static equipment: such as:
  • Pumps
  • Compressors
  • Generator Sets
  • Marine, Industrial and Vehicle Engines
These Metalastik Cushyfloat vibration isolators were originally designed for use with marine engines.  They have a compact, low profile and are easy to install.  The basics behind the design is the sturdy, steel base plate that bonds to the rubber compound, which then bonds to the protective steel cap.  It combines three way vibration control of the suspended equipment with relatively large static deflections where the rubber is loaded in the shear and compression.

These vibration mounts are designed to sustain larger shock loading.  The design incorporates bump and rebound vibration control features which limit excessive movements under these types of shock loads.  Much of this is done through a protective steel shaft that connects the top cap with fail-safe mechanism on the bottom of the mount.

The Metalastik Cushyfloats have a protective finish that helps resist corrosion attacks.  Since these mounts were originally designed for marine applications, propeller thrust for marine applications is accommodated.

There are four main sizes of these mounts.  Each size then has variations in the hardness of the rubber compound which allows this range of vibration isolators to cater to point loads from 70 lbs. to 6,600 lbs.  They are also capable of tolerating natural frequencies as low as 8 Hz.

One thing to keep in mind when selecting these mounts, is that when used with a marine engine application, the max load capacity is substantially reduced.  This reduction is by about 1/3 the normal capacity.

This is one of our top sellers, so if you have any questions or concerns, please don't hesitate to ask.

Tuesday, March 22, 2011

Vibration Isolators for Genset in Atlanta

Last year we had a re-power company out of Atlanta request our assistance on selecting vibration isolators for a large genset unit that was being place on the roof-top of a building.  It was critical that they achieved an extremely high vibration control in order to not disrupt anything within the building.

Here is a glimpse of the genset.  The size alone suggested that many calculations be made in order to accurately place and select the vibration isolators that will achieve the most vibration control.

The mounts that were chosen were Novibra RAEM 2500 B.  RAEM is a universal mounting for applications demanding maximum isolation. It is a further development of Novibra's RA™, where EM stands for “extra movement”. Suitable for both light and heavy machines. For normal speeds of approx. 1500rpm the Novibra RAEM™ type provides a degree of isolation of 85-95%, and gives good isolation with low frequency machines.
Its unique construction and the latest production methods make Novibra® type RAEM™ a high performance mounting having a number of advantages:
  • Rubber features are utilized effectively combining compression and shear.
  • Wide load rating options, 10-3400kg.
  • Corrosion protected to cope with arduous environments on land or marine applications (Fe/Zn8C as per ISO2081).
  • Fitted as standard with an integral fail-safe design with resilient stop, making RAEM ideal for use on mobile or
  • marine applications. The mounts can accommodate occasional shock loads. The mount will withstand shock
  • loads up to 2g without plastic deformation.
  • Clear and durable product marking so that mountings canbe identified even after several years in operation.
  • Domed shape cover to protect against oil contamination.
Here is a look at the foundation for the genset.

A total of 14 mounts were used to isolate each genset.  We were able to achieve a very high degree of vibration control for these units.  Mission Sales and Supply was very please to be a part of this project.  If you need help with an application such as this, please give us a call, we would love to help.  Here is a look at the installed final product.

Friday, February 25, 2011

Cushyfloats for a Yanmar 6SY-720

A few days ago I had a customer call that was experiencing extreme vibration control issues on his Yanmar 6SY-720 marine engine. He informed me that one of the rear mounts had been "chewed" up to the point that it looked smashed as if the rubber had failed. He was currently using a High Thrust version of the Metalastik Cushyfloat with part number 17/2182-55.

After consulting with an engineer contact at the manufacturer, I told the customer that he could try re-torquing the bolt on the underside of the mount (100Nm) and also making sure that the Height adjuster into the top cap of the mount is still torqued up properly (250Nm). If that did not solve the issue, it would more than likely have to be swapped for a new mount.

We distribute a variety of vibration isolators that could work well for this application. The typical solution would be a 17/1657 series metalastik cushyfloat. These mounts are originally designed for marine engines where thrust will be involved. However, since his boat was already equipped with one of the Cushyfloat HT mounts, I recommended that he replace his mount with the same version that was currently installed. If you have any questions about your marine engine mounts, feel free to give us a call. We have a knowledgeable staff that is ready to help solve your vibration isolation needs.