KH3050PP 30mm Sealed Ball Bushing 30x40x50 Linear Motion Bearing Outer Diameter - 84mm the NK19/20 inner diameter is

the NK19/20 inner diameter is 19mm

This setup uses a set-screw locking style to secure the shaft

6818ZZ is Chrome Steel

and C3 clearance

KH3050PP 30mm Sealed Ball Bushing 30x40x50 Linear Motion Bearing Outer Diameter - 84mm the NK19/20 inner diameter isKH3050PP Linear Motion Ball Bushing 30mm x 40mm x 50mm One Bearing KH3050PP Linear Motion Ball Bushing, the inner Diameter is 30mm, the outer Diameter is 40mm and the Length is 50mm. KH3050PP Bearing Linear Motion Ball Bushing Ball circuit: 7 Size: 30mm x 40mm x 50mm Bearing Inner Diameter: 30mm Bearing Outer Diameter: 40mm Bearing Width: 50mm Quantity: 1 Bearing Dynamic load rating Cr: 2805 N Static load rating Cor: 2706 N Dimensions d D B 30mm 40mm