Bearings • Roller Bearings
Roller bearings is a type of rolling element bearing. They use cylinders that are greater in length than the diameter. Relative to ball bearings, roller bearings have higher radial load capacity. They have low axial load capacity and higher friction. Also in comparison to ball bearings, the bearing capacity of roller bearings can decrease at a faster rate if the inner and outer races are not aligned properly. Common types of roller bearings include cylindrical, spherical, tapered, and needle. They are ideal for heavy-duty and moderate-speed functions. But cylindrical bearings have lower speed capabilities.
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Schaeffler Technologies (FAG) are suppliers of roller bearings. FAG spherical types are double row, self retaining units with solid inner rings and barrel rollers. The inner rings have cylindrical or tapered bores. Sizes are supplied in X-life type. FAG needle roller and cage assemblies are single or double row units comprised of cages and needle rollers, with high load carrying capacity and a very small radial design envelope. FAG ball types come in single row and double row configurations. FAG cylindrical types come in low friction, cage type, high precision, and full compliment designs. FAG tapered designs have tapered raceways and tapered rollers with a cage (not self retaining). They can support high radial loads.
RBC is a manufacturer of heavy duty needle, tapered and tapered thrust, and stud type track roller bearings. Their heavy duty needle types come in an outer ring diameter range of 1 inch to 12 1/4 inch, and can be manufactured up to 39 inch if necessary. They are supplied in either sealed or unsealed configurations. The seals can be either a single or double sealed lip. They are also offered in a double row design and have a high load capacity, caged rollers, and come in metric sizes. RBC's Tyson tapered types can handle both radial and axial loads. Their tapered thrust designs are used for heavy loads and come in sealed or unsealed versions. Sizes range from 1 inch to 3 inch bore diameter. RBC stud type airframe track rollers conform to SAE-AS39901, formerly MIL-B-3990. Stud type airframe track roller outer rings and needle rollers are made from high carbon chrome steel, and are available with cylindrical or crowned outer rings.