SKF
Principles of Selecting Mounted Bearing Solutions
A disciplined selection process for mounted bearing solutions ensures the chosen unit meets load, speed, environmental, and maintenance requirements with maximum cost-effectiveness. SKF’s methodology guides engineers through evaluating performance requirements, choosing the bearing arrangement and product type (pillow block, flange, take-up), sizing the unit, determining the lubrication approach, selecting the housing design and shaft locking method, and finalizing sealing and mounting procedures. This systematic approach is essential for both new machine designs and retrofits, preventing failures caused by mismatched locking, inadequate housing strength, or insufficient contamination protection. By following the process, engineers arrive at a specification that balances capital cost with maintenance burden and service life, ultimately lowering the total cost of ownership. SKF provides selection tools and experienced application engineers to support each step.
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Structured Decision Path
Covers all critical parameters from loads to bill of materials.
Application-Matched Housing Strength
Select cast iron, spheroidal graphite, composite, or steel for required loads.
Lubrication-Life Integration
Grease and regreasing options selected concurrently with bearing type.
Optimal Shaft Locking Method
Grub screw, eccentric collar, or adapter sleeve matched to load and vibration.
Sealing Portfolio Selection
Contact, labyrinth, or specialized seals defined by contamination and speed.
Complete Bill of Materials Output
All components documented for procurement and replacement.
How to Specify the Right Shaft Locking for Mounted Units
The locking method must prevent relative shaft rotation. For steady unidirectional loads, grub screws suffice. For reversing or shock loads, an eccentric locking collar provides a tighter grip. Tapered bore and adapter sleeve mountings are best for heavy radial loads and easy removal. SKF guidelines match the method to application severity.
The Importance of Housing Design in Load Transmission
Housing materials and ribbing affect strength, vibration damping, and corrosion resistance. SKF’s split housings allow bearing replacement without removing the shaft. Non-split pillow blocks offer maximum rigidity. Composite housings provide corrosion protection for wet environments. Choosing the right design directly impacts unit life.