Reasons Why Sintered Bars and Bearings Perform Better

May 14, 2018

Permanently protected, sintered bearings never falter, never need a secondary lubricant, nor do they wear as quickly as an average set of bearings. Sintered bars are much the same, except for that elongated dimensional form factor. In this case, those long rods are uniformly fabricated, so there are no weak spots waiting to fracture the lengthy metal component when it’s put under stress. Let’s support our case with more information.

Sintered Bars Sidestep Production Defects 

It’s not easy to fabricate a narrow component that’s equally strengthened along its entire length. The rod is moving through the machine shop and heat treatment equipment. Weld and rolling errors weaken a tiny section inside the bar. Casting defects corrupt product strength, and the part is returned to the heat treatment facility to iron out the uneven stresses. What about sintered bars? Well, imagine a product that’s fabricated from compacted powder. Powder metallurgical principles cause the particles to bind to one another until a robust material backbone takes shape. Most importantly of all, though, that strength is uniformly distributed, not full of structural discontinuities.

Sintered Bearings Perform Better 

Take a moment to handle a standard bearing. Multiple rings and rolling elements fill the device. They use mechanical principles to erase the frictional energies that would otherwise destroy the counter-rotating rings. In reality, the inner ring is locked against a shaft while the outer race is mounted on a frame. Anyway, the point being made here is that many moving parts are required to keep this bearing moving smoothly. If a single rolling element freezes or fractures, this smooth mechanical action is lost. Sintered bearings sidestep this problem by throwing out all of those rolling elements and employing a self-lubricating feature. As a result of this minimalized product profile, sintered bearings install in smaller areas, they require little maintenance, and they’re fabrication-flexible. In that latter area, standard bearings fall short. Granted, their rings and rolling elements are available in many sizes and shapes. Still, their sintered counterparts go a step further by facilitating the inclusion of any number of complex geometrical profiles.

Metal fabrication techniques are artfully handled by master engineers. As long as those components and parts aren’t placed under any stress, they’ll likely suit their final application. However, the rules change when mechanical and environmental stresses are incorporated into the design. Tiny bar and bearing discontinuities, as incurred by rolling defects and casting problems, add invisible flaws to those moving parts. Sintered bars and bearings don’t suffer from that particular drawback, not when their material bases are evenly distributed.

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