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4 considerations when selecting a shaft for use with iglide bearings

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tech talk Learn more at www.igus.com/info/plain-plastic-bearings It is critical to use shaft and bearing materials that work well together. A whole range of problems can arise if the wrong shaft material is used with a particular bearing. 1. Shaft Material: Many different shafting materials are available on the market, serving a wide variety of applications and requirements. There are a few different factors to consider when choosing a specific shaft material to be used in combination with a plastic bearing. • Weight: Plastic bearings are lighter in weight than their metal counterparts. If you are also looking for a lightweight shaft, aluminum, carbon fiber or plastic may be the best options. However, these lightweight shaft materials could present issues for certain bearing materials, such as bronze or fiber-wound bearings that typically work best on a hardened steel shaft. Plastic bearings tend to be very shaft-friendly, so there are a variety of options when selecting a shaft material to be used with them. • Corrosion resistance: If the shaft will be used in an environment where chemicals or liquid media are present, then the corrosion resistance of the shaft must be taken into account. iglide ® bearings work well on shafts that are corrosion resistant, such as hard-anodized aluminum shafts, chrome plated shafts or shafts with a number of different surface treatments, such as salt bath and gas nitride finishes. • Strength: The shafting in an application must be able to withstand the stressors of the application at hand. For some high-load applications, certain lightweight shafts may be exposed to deflection. • Magnetism: Many igus ® customers, especially those in the medical technology industry, have applications that require non-magnetic components. iglide ® bearings themselves are non-magnetic, but to suit these types of applications, it is usually important that the shaft also be non-magnetic. iglide ® bearings work well with non magnetic materials, including fully plastic shafts. • Cost: Price is almost always a factor in determining what type of shaft can be used. Some applications require more expensive materials, such as stainless steel shafts, hardened shafts or carbon fiber shafts, while other applications can take advantage of a less expensive option. Four considerations for selecting a shaft to use with iglide ® bearings

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