ABEC Tolerance 3 (P6), Z1 Noise Level for most general use Selecting Guide: Shields (Designation Suffix Z/ZZ) - High speed. MR52ZZ Deep Groove Ball Bearings 2x5x2.5mm Uxcell 6204ZZ Deep Groove Ball Bearing 20x47x14 Double Shielded ABEC MR52ZZ Ball Bearing They are used to accommodate radial and axial loads in both directions (Mainly bear radial load, but also can bear a certain amount of axial load). MR52-ZZ is a Precision ABEC1 Miniature Ball Bearing manufactured to have both sides Metal Shielded and is pre-lubricated with grease to allow it to be ready for use upon delivery Applications Wheels Replacement Use for repairing roller wheels Note: Please confirm the size and type of ball bearing before ordering. Chromium Steel long-life bearings, smooth and low noise Sealed (Designation Suffix RS/2RS) - Made of sheet steel reinforced rubber (oil- and liquid-resistant). With small friction and high-limit speed, Ball Bearings are cost-effective and require little maintenance. 2x5x2.5mm Bearing – Metal Shields – MR52zz - Bearings Deep Groove Ball Bearings Deep Groove Ball Bearings are one of the most widely used rolling bearings. 2x5x2.5mm Bearing with Metal Shields. (MR52zz) Bearings are a stronger, more reliable bearing with greater heat resistance and superior life Gearboxes Automotive gearboxes, machine gearboxes replacement parts.