Bearings by Type
Spyraflo Needle-Roller Bearings combine an extremely compact, high performance, rolling element bearing with our patented mounting technology. These bearings offer a broad range of performance, ideal for slow to high speeds with light to high loads.
Unlike ball bearings, needle roller bearings are not constructed with inner races. A hardened shaft acts as the bearing’s inner bearing raceway, with the needles generally being retained in a cage. The shaft may be through hardened or case hardened with a minimum case depth of .040” [1mm]. Hardened inner rings are available for some sizes for instances where a hardened shaft is not permissible.
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Material: Hardened high-carbon alloy rollers, case-hardened steel drawn cup
Lubrication: Lithium complex grease
Friction Coefficient: µ 0.004 - 0.008
Shaft Requirements: Hardened 58-64 HRC; 16 RMS (0.4 Ra) Surface finish
Operating Temp: -22° to 212° F
Options: Full complement, end seals, alt. lubricant, RH/LH clutch, closed end
Maintenance: None, unless scheduled (depending on application and environment).
Storage: Clean, dry storage. Desiccants or rust inhibiting paper is recommended for long term storage.
We offer bearings in press-fit, self-clinching, or mounted configurations, with plain or rolling elements, in a variety of materials. Bearings come in standard inch and metric sizes — including miniature options.