INA Stud type track rollers with a crowned outside surface are predominantly used since they are often inclined in relation to the mating track and edge stresses must be avoided.

In series KR, the radius of curvature is R = 500 mm. The series KR..-PP, KRE..-PP, KRV..-PP, NUKR, NUKRE, PWKR..-2RS and PWKRE..-2RS have an outside surface with the optimised INA profile. details: INA cam follower bearings

In INA stud type track rollers with this curvature profile

• the Hertzian pressure is lower
• edge loading under tilting is lower
• wear of the mating track is reduced
• the operating life of the mating track is extended.

INA Stud type track rollers are available in several designs as well as with or without an eccentric collar.