Archive for the ‘Bearings’ Category

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Flush Cock Valves

August 25, 2017

A video explaining the advantage of flush cock valves manufactured by TRI Transmission and Bearing Corp. has been published to YouTube.

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When shafts rub

July 12, 2017

It is undesirable to have a shaft to rub metal to metal with another machine components…but it happens. When it does, the question often asked is “Can the shaft be fixed?” It is easy enough to bring in an service that does field machining to fix the surface of the shaft, but the heat caused by a rub alters the shaft steel much like the heat affected zone that occurs during welding.

This video explains what happens with crystalline structures in steel when exposed to intense heat.

Below is a photo for a part that rubbed. Over 0.1″ has already been machined away and you can see the hard spot that still remains.Vaneplate-hardspot

 

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Fluid Drive Upgrades

April 25, 2017

TRI has new tilt pad bearing designs for upgrades to the Size 270 Dual Circuit Fluid Drive. These bearings replace fixed bore pressure dam bearings and are essential for vibration control under high torque conditions.

The image below replace the bearing and the bearing housing on the output-outboard end of the fluid drive. It’s a 6 pad bearing with 2 thermocouples in the bottom pad and vibrations probes at 45° off of the vertical center-line.

Size270DCFD-OPOB-640x640

The image below in the inboard bearing housing. This housing holds the pads for both the input-inboard bearing and the output-inboard bearing.

Size270DCFD-IB-640x640

 

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Top 5 Causes of Bearing Failures

December 6, 2016

There are many reasons why bearings fail. Over the years, TRI has been involved many repairs. TRI has published a list of the top 5 problems that lead to hydrodynamic bearing failures and how to avoid these pitfalls.

top-5-graphic

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Babbitt Casting Animation

November 14, 2016

A new animation showing the centrifugal Babbitt caster at TRI Transmission & Bearing Corp. has been added to YouTube.

Read the rest of this entry ?

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Bearing Repair Process

July 27, 2016

Electric generation companies make their money when it is hot outside. Consequently, they keep their machines running or available in the summer. Maintenance usually happens in the spring or fall…when the temperature is moderate.

Consequently, we have had some time at TRI to work on our web site. We undertook a big job to redesign it with a layout that will work devices of all size. We want it to look good on your desktop as well as your smart phone.

Our initial job is complete, but now we are adding more content for our customers.

Our latest addition is the Bearing Repair page. This page does more then just tell potential customers that TRI Transmission and Bearing Corp. repairs bearings. It is a bullet list of the steps bearings get when they come in the door. The list has been published so our customers understand what goes into a bearing repair.

When a bearing is sent to TRI during the summer, it usually means a machine is in an unscheduled outage. Unscheduled outages are expensive so it is critical that the repairs be done ASAP. When TRI goes to an expedited schedule, we work on the bearing repair 24 hours a day, 7 days a week. It’s important to us that the customer knows exactly what we are doing and how far along we are in the process.

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Tilt Pad Bearing Assembly

April 29, 2016

TRI has released a new video showing the assembly of a simple tilt pad bearing.