Top Features and Qualities of Sintered Bronze Bearings

March 21, 2018

Sintered bronze bearings perform an essential role in many applications. The friction dissolving components self-lubricate, they require little maintenance, and they’re economically priced. Now, we’ve already described the lubricant impregnation process in some detail. Furthermore, we’ve talked about powder metallurgy, the science that makes this partnership possible. Proceeding further on this track, we’re about to delve deep into the features that make these components stand out.

Delivering Low-Space Functionality 

Shaped like a plain bushing, perhaps with a flanged edge, sintered bronze bearings don’t have any rolling balls or separate rings spinning around a shaft. Imagine that, the notion that a self-lubricating shaft mount, loaded with rotational energy, doesn’t require dozens of moving parts. As a consequence of this minimalistic approach, there’s less to go wrong. Moreover, the yellow-brown bushings can be reduced in size until they fit a confined space. Used to reduce friction in tiny motors, bronze bearings are utilized inside stepper motors and other miniaturized drive/positional mechanisms because of this space-saving feature.

Sustained by Bronze Strength 

It’s true, bronze powders do produce some of the finest sintered bearings on the market. Take SAE841 bronze, for example. This alloy is strong, it’s extremely pure, and the metal is essentially designed to quickly expend heat. Placed on a high-speed drive system, these self-lubricated bushings endure. They dissipate thermal loads, handle high rotational velocities, and basically outperform their closest counterparts. By the way, the selected lubricating oil should copy those performances characteristics. Otherwise, that fine capillary action will quickly fail. Next on the agenda, bronze bearings don’t corrode, so that high-temperature handling quality is matched by an equally capable rust mitigation feature. Taking both of these features into account, sintered bronze bushings make excellent marine components. The bearings self-lubricate while they’re in chemically adverse environments, briny areas, or other industrially hostile application sites. Here, look at this bulleted list of key performance features:

  • Extremely corrosion resistant
  • Self-lubricating bearings
  • Perfect for miniaturized drive/positional systems
  • Sintered bronze bearings do not use many moving parts

If there’s a contemporary application in need of a rotation-based friction compensation mechanism, this low-maintenance bearing type has the required features and qualities to stay the course.

As illustrated in previous posts, powder metallurgy science has produced an amazing line of maintenance-free components. The sintered bronze bearings are sealed in drilling tools, utilized inside submerged pumps, and upscaled to operate large turbines. Furthermore, they’re corrosion resistant, designed for variable speed applications, and tied to that partnership we mentioned earlier. Porous bronze and fluid lubricant, that union is still evolving.

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