NN3008MBKRE44CC1P4 NSK Precision Double Row Cylindrical Roller Bearing with Tapered Bore 40x68x21mm Closed The "ECP" suffix signifies that

The "ECP" suffix signifies that the bearing is fitted with a polyamide (nylon) cage

BK4520 Needle bush

Grease 2800 rpm

Thread: M16x1

NN3008MBKRE44CC1P4 NSK Precision Double Row Cylindrical Roller Bearing with Tapered Bore 40x68x21mm Closed The "ECP" suffix signifies thatCylindrical roller bearings support only radial loads, but have the advantage of a larger radial load capacity than ACBBs. Double row cylindrical roller bearings (NN and NNU types) and single row cylindrical roller bearings (N type) are available. In general, double row cylindrical roller bearings are used for high rigidity applications such as lathes, while single row cylindrical roller bearings are used in high speed applications such as machining