Use this engineering calculation for a transparent preliminary estimate or independent arithmetic check when geometry, materials, loads, operating conditions, and units are defined consistently.

Maximum Radius Millimeters (mm)

Required number input.

Minimum Radius Millimeters (mm)

Required number input.

Eccentricity of a disk cam from maximum and minimum measured radial distances to the rotation center. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Eccentricity Millimeters (mm)

The resulting eccentricity millimeters returned as a number.

• Simple cam motion defines displacement but not automatically acceptable velocity, acceleration, jerk, pressure angle, contact stress, undercutting, spring force, or dynamic response. Manufacturing geometry and follower type affect the realized motion.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check assumptions against drawings, measurements, current material data, and the applicable design code. Apply required load combinations and safety factors, then obtain qualified review and testing for consequential designs.

• Escape Velocity

  Ideal two-body escape speed √(2μ/r) at a specified center-to-center radius; ignores atmosphere and rotation.

• Flywheel Mass Inertia

  Mass moment of inertia of a uniform solid disk flywheel about its center axis: I=½mr².

• Illuminance Uniformity

  Lighting uniformity ratio of minimum measured illuminance to average illuminance on the same measurement grid.