The structures of needle roller bearings are diversities, can be manufactured by a pair of rings and a full complement of rollers, or a full complement of rollers only. The diameter of rollers are oversize of 5mm, the bearings named Long Cylindrical Roller Bearings.  Specific products as follow:

Needle Roller Bearings without Ribs

Sealed Drawn Cup Needle Roller Bearings

Radial Needle Roller and Cage Assemblies

Long Cylindrical Roller and Cage Assemblies

Needle Roller and Cage Assemblies For Crank Pin Bearings

Needle Roller and Cage Assemblies For Crank Piston Pin Bearings

Needle Roller Bearing Without Inner Ring

Drawn Cup Needle Roller Bearings

Sealed Heavy Duty Needle Roller Bearing With Or Without Inner Ring

Axial Cylindrical Roller And Cage Assemblies

Aligning Needle Roller Bearing With Or Without Inner Ring

Full Complement Needle Roller Bearings

Yoke Type Track Roller

Sealed Yoke Type Track Roller Without Axial Guidance

Yoke Type Track Roller

Stud Type Track Roller Bearings With Screw

Inner Ring

Axial Needle Roller And Cage Assemblies

Axial Needle Roller Bearing With Centring Spigot On The Bearing Washer

Drawn Cup Roller/Clutches

Drawn Cup Full Complement Needle Roller Bearings