Pivot bearing — contact pressure and friction torque
Contact pressure (Hertz, with interpolation to a plastic/Brinell regime at high loads) and friction torque/power for a pivot bearing ("boltaats").
Reduced modulus, E'316.42186468940895 GPa
Reduced radius, R'3 mm
Contact radius, r0.06576457350320215 mm
Approach, d0.7208298546763464 µm
Mean contact pressure, pₘ0.7359801672076791 GPa
Max contact pressure, pₘₐₓ1.1039702508115188 GPa
Friction torque, M0.0387385314345236 Nmm
Friction power, q2.434013715311132 mW
Method & references
- Pivot bearing contact pressure (Hertz) and friction torque; interpolates to a plastic (Brinell) regime for pₘ > H/3.
The computation is a literal port of the original client-side JavaScript from /calculators/e3_10.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.