Prepared in our ISO Certified Rochester Hills facility across Transfer, Injection, or Compression mold lines - our Rubber Insulated bushings made with the finest natural rubber or synthetic elastomers provide flexible solutions to the noise, vibration, shock, and misalignment problems inherent in most mechanical designs.
Rubber-Flex bushings are produced to your specifications at exceptionally low cost, even in small lots. Inner and outer sleeves are separated by an elastomer wall that also holds them together with a strong bond. The elastomer takes up all the movement without permitting the bonding surfaces to move.
Based on our experience, and the accumulation of tooling from prior years – there are many sizes we can offer which require only assembly – eliminating the expense of tooling. We can also help you determine the least expensive approach to match your specific needs.
Bushing inserts can be supplied in virtually any metal – brass, steel (often case hardened for use on torsional bushings with end serrations for gripping), stainless steel, bronze (including porous bronze powdered metal bearings for lubrication), copper or plated metal – and plastics. The outside diameter of the outer can of the bushing is often centerless ground to size to “press fit” into a receiving bore hole.
Elastomer selection is most often driven by the environment of the application. Ozone exposure, severe cold or heat, exposure to oil, gas, diesel, or solvents must be considered.
We offer free design assistance, and can help if you are designing a new product. If you are looking towards systems integration to reduce the number of parts, attempting to solve specific application problems, or simply trying to reduce noise and vibration in an existing mechanism, we can assist to ensure your bushing design will meet all of the physical and mechanical requirements of the application.
The proper design takes into consideration radial, (both static and dynamic), axial, torsional and conical loads and their combined effects. Plus cycle speeds and frequency of application, size and space limitations (shaft size/maximum O.D. / I.D., or length) and any abnormal environmental influences such as exposure to heat, cold, oil, and solvents.
Beyond the choice between transfer, injection, or compression molding – it’s important to understand the physical and mechanical requirements of your application. If you are considering a center bonded over mold, can your parts accept axial loading thru the bore? What radial loads are expected, and will a silent-bloc bushing handle the expected radial load of your application? Will a fully mold bonded design hold up in a rigorous application – or should the part be pre-stressed to add durability and longevity in my application? What is the best method of manufacture for reciprocating torsional force?
Contact us early-on in your project - Bushings Inc. can help with all of the above questions based on our 70+ years of experience.
January 07, 2016 by Bushings Inc.
Back in early 2013, we received a phone call from a large OEM experiencing early wear out problems with the rubber-insulated bushings in their shaker machines. This was a very severe application with each of the three bushings in the machine, seeing continuous, radial, torsional, and conical loading.
August 29, 2014 by Bushings Inc.
One of the most frequently asked questions we receive from customers who visit us on line, or call in - is with regards to bushing design, and specifically – What method of manufacture is best for my bushing application? In this blog, we’ll examine two different approaches to bushing manufacturing design.
"I want to take this opportunity to thank the Bushings Incorporated team that recently helped us get our automated assembly line up and running. For years our line required our rubber insulated overmolds be manually inserted due to several failed attempts to get an automated press to properly insert the bushings. The Bushings Incorporated team was able to help by working with our manufacturing engineers to develop fixtures, and procedures that were able to get the automated press up and running.
With the new press up and running, the consistency has been great, and the operator is very happy with the new process. The operator says that the new press and fixturing is doing a good job at installing the bushings straight and consistent. He has experienced no “mushrooming” or tearing of the bushings with the automated press (this was the reason for manually inserting them for so many years). The operator also says that the job is much easier on him, and the production level is up due to the new process.
The help that was received to improve our process was above and beyond. That kind of support is needed and appreciated, and while most vendors lack in their support, it is my feeling that Bushings Incorporated and their team have gone one step above.
Thanks again for the support!"
Engineering Product Manager
Motion Control Division