这款产品专为安装在FAG 51100推力轴承的顶部而设计:
https://www.bearingandengineering.co.nz/shop/BEARINGS/Bearings/thrust-ball-bearings/THRUST+BEARING+51100.html
或者一款608型号的滑板轴承(价格便宜得多):
https://www.farrellbearings.co.nz/shop/Products/Skate/Skate+Skateboard+Bearings.html