NSK NJ309-ETC3 Cylindrical Roller Bearing - 45 mm ID, 100 mm OD, 25 mm Width Kukko They have a wrap around

They have a wrap around design that provides extra protection

With increased safety due to yellow insulation core

Includes universal holder with strong permanent magnet for the take-up of bits with ¼" hexagon head drive

Timken® Duplex Super Precision Angular Contact Ball Bearings

the five different internal extractors are specifically designed for the disassembly of common bearings

NSK NJ309-ETC3 Cylindrical Roller Bearing - 45 mm ID, 100 mm OD, 25 mm Width Kukko They have a wrap aroundCylindrical Roller Bearing NSK cylindrical roller bearings handle heavy radial loads with high speed and stiffness. The line contact between rollers and raceways gives them high load capacity, and the various designs (NU, NJ, NUP, N) allow them to accommodate axial displacement or take small axial loads. They are ideal for gearboxes, electric motors, and heavy industrial equipment.