Nippon Bearing – Engineering Information

This guide compiles the engineering fundamentals required to size NB linear motion and rolling components with confidence. It presents bearing life and reliability concepts, contact stresses and permissible loads, together with temperature factors and contamination coefficients that adapt textbook formulas to the realities of factory environments.

The document clarifies preload and rigidity, showing how axial clearance and elastic deformation influence positional accuracy and vibration. Worked examples walk through the process from load spectra to equivalent radial loads, then to life estimation and safety factors appropriate for duty cycles and shock exposure.

Mounting tolerances, fits and surface roughness recommendations are consolidated so housing and shaft design is consistent with the target accuracy grade. Guidance is also provided for lubrication selection, interval planning and the effect of viscosity on friction power and heat generation.

Finally, the guide offers checklists for prototype validation—measurements to record, alignment steps to repeat and acceptance criteria—to ensure repeatable performance before ramping to production.