Bushings Inc. provides our metal clad rubber insulated bushings and overmolds to the premier OEM’s in the Industrial Market. In many cases we have provided quality products and service to these market leaders since the molds were transferred to us in the mid 1960’s.
We have the expertise in material selection, development of compounds, design experience and method of manufacture – drawn from 70+ years in business, and thousands of applications. Our experience ensures your successful application.
Listed below are just a few of the Market Segments and Applications where our rubber insulated bushings and rubber to metal overmolds have been successfully applied.
Track Conversion Systems
Drive and Arm Bushings
Forest Products / Pulpers
Road Maintenance Equipment
Asphalt Scarifying Arms
Airport and Shuttle Bus Suspensions
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.
The OE had been thru two vendors, three iterations of bushings, and several different bushing designs, and still had not achieved acceptable performance, which they defined as “required to hold up for a minimum of one year in the application”.
The graph to the left depicts results of our tests which we used to diagnose, and solve their application problem.
Part “A” was a fully mold bonded bushing, which the OE advised was de-laminating early on in the duty cycle. Parts “B” and “C” were silent-bloc bushings, part “B” worked fine in the application, but was seeing early wear outs (within 6 months of operation). Part “C” was a harder version of the silent-bloc bushing – but when this part was installed in the shaker, the machine would not start.
After the load deflection test, Bushings Inc. designed a center bonded bushing, molded in hardness slightly stiffer, than part “B” – we also molded a variant, in a slightly stiffer compound. Our initial part worked well in the application. Once we achieved the desired hardness for optimum function in the application, we tweaked the rubber formula to obtain greater tensile strength to further extend the life of the part.
After more than 18 months of testing in the application, we are happy to say, that this bushing was adapted by the OE for their shaker machines, and is working well, with no further complaints of short life.
Rubber-Flex Bushings and Dual-Flex Engine Mounts are at work every day, solving noise, vibration, shock, and alignment problems for the leading Original Equipment and Aftermarket suppliers in the following Market Segments and Applications.
Gas & Diesel Engines