ONE-ROW METRIC ISO SERIES
ENGINEERING 8 TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG
BEARING TYPES AND CAGES
ENGINEERING
BEARING SELECTION PROCESS
ENGINEERING
BEARING SELECTION PROCESS
TIMKEN BEARINGS
Timken provides an extensive variety of rolling bearing types and sizes. Knowing that the bearing is often the most critical component within a moving assembly, Timken engineers take great care to ensure the customer is receiving maximum value when a Timken bearing is selected. Timken provides the proper bearing for virtually any motion-control application. With more than a century of proven experience in bearing technology, Timken is a world leader in the rolling bearing industry. The Timken Company has an experienced, highly skilled staff of trained engineers located around the world to assist the customer in bringing new, mechanized products to market. Timken engineers are a powerful resource for customers to turn to for assistance in the appropriate selection of bearings to meet any of the following considerations: Higher technical demands or higher levels of application requirements. Higher levels of application complexity. Critical applications where system damage must be avoided for all modes of operation. Potential exposure to personal injury. Costly damage or downtime resulting from the use of an inappropriate bearing for a given task. Because Timken offers so many bearing configurations to serve a wide variety of situations, a suggested starting point in the selection process focuses on the assessment of two basic categories: the first being boundary (or fixed) conditions and the second being performance expectations (or desired results). Depending on your application, the boundary conditions and performance expectations will vary. Trade-offs or compromises must be addressed so that the final bearing type and size selected are a reasonable balance of all factors. It is a wise practice to examine factors critical to the success of the device and prioritize them. Boundary (or fixed) conditions that should be taken into consideration include: External loads, including radial, thrust, moment, shock and combination loads. Acceleration and deceleration levels. Operating temperature range (including extreme limits and thermal cycling). Other environmental factors, such as humidity, fluids, vibration, debris, magnetic fields and vacuum. Spatial constraints. Performance expectations (or desired results) to consider include: Rotational accuracy and repeatability (e.g., service precision level). System rigidity (axial or radial stiffness). Application service life. Speed. Looking at the key operating parameters of the system will help focus on the most viable bearing solution. Typical considerations in application design include optimization of controllable variables affecting application performance: Bearing design. Bearing shaft and housing arrangement; shaft and housing material. Installation and handling requirements of the bearing, as well as shaft and housing preparation. Presence of adequate sealing for the exclusion of contami- nants; types of foreign materials possible. Lubricating method (lubrication type and delivery system). Maintenance procedures and intervals. Once these conditions and expectations are identified and prioritized, the most appropriate bearing type(s), size(s), and part number(s) that meet the basic application requirements can be selected.
DISCLAIMER
This catalog is provided solely to give you analysis tools and data to assist you in your product selection. See page 4 for full disclaimer.
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