6203 DU NSK Ball Bearing 17x40x12 mm deep Groove Ball Bearing 6203ddu 6203 2RS

Had to rebuild my booster pump and had to replace the bearings. These are the original type and make as the ones the pump had.Good quality ones. Do it right so you only do it once.The once in a DIY video were not correct.p.s. change the seals also !

Is this a good quality NSK bearing? Yes. Did I order a bearing for a 17mm shaft when I really needed 5/8"? Yes... oops. Thankfully I was able to return this one.

Fast shipping. Excellent.

Three of three squeeze grease out the seal.Pressed into pulleys straight and true.Well within RPM and load capacity rating for these bearings.Within few hours run time, grease will begin coming out. Few runs later, the seal will show odd discoloration.Not worth the headache