RESIDUAL UNBALANCE ACCEPTANCE CRITERIA Standard ISO – 1940
Determind max residual unbalance on rotational parts depend on : 1. Weight of rotational part ( in kilograms ) 2. Diameter or rotational parts ( in milimeters )
3. Actual operating speed ( in rotation per minute ) Equation : ReU = Ub x W2r ReU Ub W R 2
: : : : :
Residual unbalance rotor ( gram ) Acceptance Residual Unbalance per unit rotor mass ( Kg ) Rotor weight ( Kg ) Radius Rotational parts Distribution area residual unvalance ( Pane A, Plane B )