Part Number: 19150


Product Details

Wheel Bearing Cups and Cones 

FAA-PMA approved Timken wheel bearings for Goodyear, Cleveland, and McCauley wheels

  • Class 2 aviation grade FAA-PMA bearings (Timken designates these with a -20629 suffix)
  • Tighter tolerance and higher quality control than Class 4 automotive bearings
  • Save $$


Don't be tempted to buy cheapy automotive bearings

Because Timken uses the same part number for both the automotive and aviation versions of these bearings, many people mistakenly use the lower quality automotive bearings in their airplane. 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.


Wheel to Seal Kit and Bearing Cross Reference

Bearing Cup and Cone Dimensions


APS BlackSteel brake discs and linings, brake bleed valves, and wheel grease seals also available.

warningWARNING: Cancer and/or Reproductive Harm -

Eligible Aircraft

Make Series Model Beginning S/N Ending S/N Quantity Per Aircraft Location Comment Eligibility Chart
Aero Commander (Rockwell/Gulfstream) 500 500 500-618 500-852
Aero Commander (Rockwell/Gulfstream) 500 500-A 500-A-875 500-A-1276
Aero Commander (Rockwell/Gulfstream) 500 500-B 500-B-893 500-B-1631
Aero Commander (Rockwell/Gulfstream) 520 520 520-1 520-150
Aero Commander (Rockwell/Gulfstream) 560 560 520-151 520-230
Aero Commander (Rockwell/Gulfstream) 560 560-A 560-A-437 560-A-884
Aero Commander (Rockwell/Gulfstream) 560 560-F 560-F-951 560-F-1496
Aero Commander (Rockwell/Gulfstream) 680 680-F 680-F-820 680-F-1447
Aero Commander (Rockwell/Gulfstream) 680 680-FL 680-FL-1261 ZZZZZZZZZZZZZZZ
Aero Commander (Rockwell/Gulfstream) 680 680-FL(P) 680-FLP-1471 ZZZZZZZZZZZZZZZ
Aero Commander (Rockwell/Gulfstream) 720 720 720-501 720-850
Air Tractor AT-400 AT-400 0 ZZZZZZZZZZZZZZZ
Air Tractor AT-402 AT-402 0 ZZZZZZZZZZZZZZZ
Air Tractor AT-500 AT-501 0 ZZZZZZZZZZZZZZZ
Air Tractor AT-500 AT-503 0 ZZZZZZZZZZZZZZZ
Air Tractor AT-500 AT-503A 0 ZZZZZZZZZZZZZZZ
Air Tractor AT-502 AT-502 0 ZZZZZZZZZZZZZZZ
Beechcraft 100 100 B-2 B-93
Beechcraft 100 A100 B-90 B-247
Beechcraft 100 B100 BE-1 BE-137
Beechcraft 50 50 H-1 H-11
Beechcraft 50 50 LH-1 LH-55
Beechcraft 65 65 L-1 L-6
Beechcraft 65 65 LC-1 LC-239
Beechcraft 65 65 LF-7 LF-8
Beechcraft 65 65 (L-23F) L-1 LF-9999
Beechcraft 90 F90 LA-2 LA-204
Beechcraft 99 99 U-1 U-136
Beechcraft 99 99A U-36 U-147
Beechcraft 99 A99A U-132 U-132
Beechcraft 99 B99 U-146 U-164
Beechcraft 99 C99 U-165 U-239
Cessna 190 190 7004 16183
Cessna 195 195 (LC-126A,B,C) 7004 16183
Cessna 310 310 35000 35546
Grumman G-164 G-164B 0 ZZZZZZZZZZZZZZZ
Grumman G-164 G-164C 0 ZZZZZZZZZZZZZZZ
Grumman G-164 G-164D 0 ZZZZZZZZZZZZZZZ

Related Product Catalog Pages

Wheel to Seal Kit and Bearing Cross Reference