Index Table

Required torque, angular acceleration and inertia ratio for an indexing table.

Table diameter (m)

Table thickness (m)

Table/work density (kg/m3)

Workpiece diameter (m)

Workpiece thickness (m)

Workpiece count

Workpiece offset radius (m)

Index angle (deg)

Positioning time (s)

Accel/decel ratio

Reduction ratio

Reducer efficiency

Safety factor

Motor rotor inertia (kg.m2)

β = 2θ / t_acc²  (output angular accel)
J_table = (π/32)·ρ·LT·DT⁴ + n·m_w·l²
T_S = (J_L / i²)·β·i ;  T_M = T_S·S
Inertia ratio = J_L / JM

If inertia ratio > 5, use a reducer to improve matching.