INA needle roller bearings

Examples include NK12/12-XL, NA49/22-XL and HK0408. The first two retain a slash within the numeric block and an XL segment after a hyphen; HK0408 uses letters followed by continuous digits. The catalog classifies the latter as a drawn cup needle roller bearing. These structures organize identification but do not justify interpreting each digit as a measurement or exchanging NK, NA and HK by similarity. Copy the entire reference and check the assembly drawing for included rings and components.

For a transmission shaft or mechanism with limited radial space, establish how the raceway is formed and which part provides the outer seat. A position sketch helps review this without assigning the same composition to the entire line. Available width alone does not explain selection: relate it to diameter, side support and retention. An isolated cage, a drawn cup and a bearing with other components do not necessarily represent the same replacement scope.

Send MR Accesorios Industriales the code, inside and outside measurements, width, removed-part photograph and application. Show retained rings or other parts separately and mark their positions. Include equipment identification or a drawing if the code is incomplete. Specify whether measurements belong to the replacement or its housing; confusing them makes the inquiry ambiguous.