ISO 1940 Rotor Permissible Unbalance Calculator
Rotordynamics & industrial machinery balancing: Calculate permissible residual unbalance ($U_{per}$), specific eccentricity ($e_{per}$), and two-plane dynamic tolerance allocation per ISO 1940-1 / ANSI S2.19.
Rotor Specifications & Balance Grade
Radius where balancing weights are attached
Percentage assigned to Plane 1
Permissible Unbalance Tolerance Limits
Total Permissible U_per:
--
g · mm (gram-millimeters)
Specific Eccentricity e_per:
--
μm (micrometers CG shift)
Plane 1 Limit U₁:
--
g · mm
Plane 2 Limit U₂:
--
g · mm
Max Trim Mass:
--
grams (at r_c)
Dynamic Centrifugal Residual Force
Angular Speed Ω:
-- rad/s
Residual Centrifugal Force F_unbal:
-- N
Balancing Tolerance Status:
--
Recommended Tools & Equipment
Tested hardware and components for high reliability
100% Free Tool
Zero Sign-Up