6311 Deep Groove Ball Bearing 55×120×29mm C3 Open/2RS/2Z High Speed Bearing For Motors Pumps Agricultural Machinery Product Overview GQZ 6311 single row deep groove ball bearing measures 55×120×29mm, manufactured from high-quality GCr15 chrome bearing steel. With nearly 30 years of bearing production experience and ISO9001:2015 certification, this bearing can bear both radial and light axial loads, available in open, 2Z, 2RS sealed types and C0/C3 clearance. We support OEM