81218-M

81218-M – Axial cylindrical roller bearing for axial stiffness in a compact design.

Quality that safeguards processes
Designed for high, one-sided axial loads, it runs with low friction and guides the shaft precisely in the axial direction. Furthermore, the line contact of the rollers and the pronounced rigidity ensure smooth running. Radial loads are not supported and must be handled separately if required. This ensures stable and predictable operation over a long period.

Design and manufacturing quality
The design utilizes cylindrical rollers with linear contact, distributing the load over a longer contact zone. Combined with a solid brass cage (M) and precision-machined raceways, this results in low frictional torque, ensuring stable and predictable operation. The separable shaft washer, housing washer, and roller assembly significantly simplify handling during assembly and maintenance. Due to the limited angular adjustability, precise alignment of the contact surfaces is recommended. For direct bearing applications, flat, hardened mating surfaces must be used; alternatively, suitable thrust bearing washers can be employed. This roller belongs to the 812 series. It is a single-row, single-acting design. The tolerance conforms to standard (P0). A solid brass cage (M) guides the roller assembly precisely, resulting in a balanced interplay between load-bearing capacity and ease of handling.

Convincing in everyday life
In operation, this results in high axial stiffness in a compact design, while maintaining consistent temperature and vibration levels, which simplifies monitoring. Thanks to the easily separable components, downtime for inspection or replacement is reduced, provided that lubrication and fits are appropriate for the application.

Summary
In short: axially high load-bearing capacity, stiff and low friction – for reliable results in arrangements with axially dominant loads.