This deep groove ball bearing carries radial loads on a single row of balls, with a bore of 90.0 mm, outside diameter of 190.0 mm, and width of 43.0 mm, weighing 6.0 kg. It is fitted with a solid brass cage (M) and features a ceramic coating on the bore (J20AA), giving it electrical insulation properties. Radial internal clearance is C4 (Group 4), and the limiting speed reaches 6300 1/min with a reference speed of 5100 1/min. The ceramic coating on the bore insulates the shaft seat from electrical current passage, which prevents damage caused by current leakage through the bearing. The C4 clearance accommodates thermal expansion and shaft fit conditions requiring extra internal play, while the solid brass cage provides stability at the stated speed range. As an open bearing without integrated sealing, it requires external sealing and separate lubrication arrangements suited to the operating conditions.