Both recirculating and plain linear bearings as well as track-roller wheel-based linear bearings can use a wide variety of shaft materials, depending on the application or environmental requirements. Shafts for recirculating linear bearings are typically made of bearing-grade carbon steel or stainless steel. Likewise, plain linear bearing systems can use carbon steel, stainless steel, or aluminum shafts. And for very harsh environments or special conditions, shafts can be plated or coated to withstand caustic or abrasive contaminants.
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