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Lower End
Engine Cases
Main Bearings
Crankcase Main Bearings Left 1912-1916 Twins

Self-aligning ball bearing

Item №

For the first years of heavy weight big twins (988 cc/ 60.3 cuin) the factory chose tu use a metric bearing. To compensate for minor production irregularities, they used a so-called double-row self-aligning ball bearing. The dimensions of 25 x 62 x 17 mm seem familiar to someone who feels at home in dealing with inches and feet. But these dimensions are just the tiny bit off of common inch fractures. So, for all ye restorers out there: dont look further, here's the right stuff.

The flywheel spocketshaft is no press fit in the inner race, but a slide fit.

  • for Crankcases / Sprocket shaft
  • fits 61 cuin twins 1912-1916, 1917-1919 special motors n° 500-999
  • double-row
  • steel / glass fiber reinforced polyamide
  • ID x OD: 25 x 62 mm, 17 mm thick
  • tolerance class: ABEC 1
  • replaces Harley-Davidson part number AA704
  • gross weight: 256 g
net price*
* United States of America: Tax free shipping. Please check your local import fees.
In stock. Ready for immediate delivery from our Würzburg, Germany warehouse
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Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com