What Are Gear Bearings and Their Uses?


Used for a variety of applications that range from transportation to power tools, industrial machinery, toys, and more, bearings are an overlooked, yet common, component used in our daily lives. Carrying a load while utilizing rolling elements, reducing friction, and providing tighter suspension for various gears, bearing assemblies encompass compact mechanical moving elements that hold interlocking gears together by force or mechanical suspension. Varying bearing types include gear bearings, ball bearings, ball thrust bearings, roller thrust bearings, tapered roller bearings, and more.

With one of the earliest known bearing methods stemming from the implementation of wooden logs as rollers, the first patent for a modern bearing design did not arise until 1974, filed by Philip Vaughan. With the original design consisting of caged rollers rotating along a fixed groove within an axle assembly, the later development of gear bearing technology in particular came about to alleviate issues commonly experienced with other bearing types. Within this blog, to better understand how gear bearings function, we will highlight the key components that make up their structure and the varying applications they serve.

Applied in a wide array of mechanical objects such as transmissions, steering mechanisms, alternators & generators, construction equipment, mechanical toys, and other assemblies, most gear bearings are composed of identical working parts. Their architecture, formed out of various orbiting gears of the same width, functions with a track consisting of an inner and outer ring that holds the components together. This technology disposes of the need for separate bearings, inner races, carriers, and other components otherwise required in older bearing types. As a class of roller bearing, the goal of a gear bearing is to allow movement without backlash, reducing noise and vibration, and providing notably less fatigue failures from increased cycle loading. Consisting of linear, rotary, and other motion hybrids, these devices are compatible with various types of gears such as spur, helical, elliptical, and bevel gears. Self-synchronized in motion, gear bearings can also take on planetary, sun, ring, and rack forms.

An economically feasible component, gear bearings provide simple and versatile designs ranging in weight, materials, and hybrid types. Decreasing weight, cost, and size while increasing performance and capacity, modern gear bearings provide a significant improvement in performance as compared to older models. Although functionally superior, due to their design, internal components within newer variations can be harder to access. Typically large in size and weak in structure, gear bearings can be more difficult to maintain despite their strength. Making lubrication of the instruments a troublesome task, gear bearings also may require additional support through the aid of anti-friction components or coatings to alleviate thermal stress and provide durability. Scrutinized to a high degree of standards for quality during the manufacturing process, these parts also require a longer processing time and higher purchasing costs if bought new.

For rapid and reliable service for your gear bearing assembly upgrades or replacements, look no further than Aerospace Simplified. As your trustworthy source for numerous gear bearing assembly types, gear bearing kits, shaft gear bearings, and various other supplies and components, we are here to help you find what you are looking for. Due to our quality control and export compliance, we operate with AS9120B, ISO 9001:2015, and FAA AC 00-56B certification and accreditation. If you would like to request a quote for your comparisons, you can submit an RFQ form as provided on our website. Upon receipt, a dedicated account manager will quickly review and respond with a personalized solution to your needs in just 15 minutes or less, 24/7x365.


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