... ) High performance, Long life7) Certificate: Available1.Introduce: Needle bearing (needle bearing) is a cylindrical roller of the roller bearings, ... place with limited space.2.Features and application: Needle bearings equipped with fine and long roller (roller ... diameter D 5 mm, L/D 2.5, L for roller length), so the ... only bear radial load.3.Picture: NK55/25 needle bearing