[{"id":172779372680,"handle":"aircraft-bearings-and-races","title":"Aircraft Bearings and Races","updated_at":"2026-05-18T15:29:48-04:00","body_html":"\u003ch2\u003eAircraft Bearings and Races for Wheel and Brake Maintenance\u003c\/h2\u003e\n\u003cp\u003eShop aircraft bearings and races at Pilots HQ for precision components used in aviation wheel and brake systems. This collection is centered on aircraft bearing cones and cups, giving pilots, aircraft owners, mechanics, and maintenance professionals a focused source for part-number-based replacement needs in aircraft wheel applications.\u003c\/p\u003e\n\u003cp\u003eThe visible product mix strongly reflects Timken tapered roller bearing components used in aviation service, including both bearing cones and bearing races for matched installations. For buyers sourcing replacement wheel and brake parts, this category is especially useful when exact series, cone numbers, cup numbers, and aviation-specific approvals matter during inspection, overhaul, and maintenance work.\u003c\/p\u003e\n\u003ch2\u003eShop Aircraft Bearing Cones, Cups, and Aviation Replacement Parts\u003c\/h2\u003e\n\u003cp\u003eAircraft bearings and races are a technical maintenance item, so correct selection is critical. This collection is well suited for customers searching for aircraft bearings and races, aircraft wheel bearings, aviation bearing races, airplane wheel bearings, and wheel and brake bearing components used in general aviation service. The live product language also emphasizes tapered roller bearing construction, separable cone and cup assemblies, and aviation-specific versions intended for aircraft applications rather than lower-grade automotive substitutes.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eAircraft bearing cones and bearing races for wheel and brake system service\u003c\/li\u003e\n \u003cli\u003eTapered roller bearing components suited to aviation replacement requirements\u003c\/li\u003e\n \u003cli\u003ePart-number-driven options for accurate maintenance and overhaul sourcing\u003c\/li\u003e\n \u003cli\u003eUseful for mechanics, aircraft owners, builders, and aviation maintenance shops\u003c\/li\u003e\n \u003cli\u003eAircraft wheel bearing components selected for fit, load support, and dependable operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are sourcing aircraft bearings and races for replacement or scheduled maintenance, this collection helps narrow the search to aviation-focused bearing components used in wheel and brake assemblies. 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This collection includes aircraft electrical power parts, ELT products, engine parts, filters, hardware, lighting components, cabin safety products, O-rings, seals, gaskets, oxygen equipment, static dischargers, and wheel and brake parts. Whether you are sourcing routine replacement items or hard-to-find aviation parts, this category is built to help pilots, aircraft owners, and maintenance professionals find the components they need in one place.\u003c\/p\u003e\n\u003cp\u003eBrowse popular aircraft parts categories including batteries, circuit breakers, fuses, spark plugs, igniters, starters, oil filters, fuel filters, AN bolts, rivets, washers, landing and taxi lights, fire extinguishers, aircraft tires, tire tubes, brake components, and more. 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This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft.
Specifications
Series: 47800
Cup Part Number: 47820
Design Units: Imperial
Approvals: FAA/PMA
Don't be tempted to buy cheapy automotive bearings
Because Timken uses the same base part number for both the automotive and aviation versions of these bearings, many people mistakenly use the lower quality automotive bearings in their airplane. Normally, Aviation bearing part numbers include the 20629 dash number. It is critical that the FAA-PMA Class 2 version be used for aircraft applications for two reasons:
They are a higher class of bearing with tighter tolerance and have been subjected to more stringent quality control procedures. Due to the smaller diameter of aircraft wheels, at a given ground speed the bearings rotate at a much higher RPM and require the tighter tolerances to prevent premature failure.
Example: At a 70 mph touchdown speed (equivalent to highway speed of a car), a typical 17 inch diameter airplane tire is rotating at 1384 RPM, whereas a typical 27 inch car tire is only rotating at 871 RPM. So even though the aircraft bearing is only subject to intermittent use, some of the performance demands are much higher than a typical automotive application.
It is a violation of FAA regulations to use non-approved automotive bearings on certified aircraft.
I work on old vintage motorcycles, most of which have a fair amount of oil and grease on the engine and transmission parts. These gloves are so much better than the run of the mill cheapo's that can be bought about the same price. Yes, these will tear like any nitrile glove, but these are very, very durable and do a very nice job of standing up to gas, oils, and brake cleaner. I've yet to find any better than these for the price. No complaints whatsoever.
I took the chance of ordering expired Loctite 330. It was jelled up pretty good and generally unusable. It was my fault for trying it and never called the company to complain as I took the chance and that is on me. Order the good stuff.
Had used aviation Camguard for years. Added as well to each quart of oil added to my Lyc 540 SIA5 aerostar engines. Went past TBO with excellent compressions. Oil analysis always normal.
Also add to automobiles but too early to see a benefit.
