Motor Power (Torque × RPM)
Compute a motor's mechanical power from torque and rotation, P = τ·ω = τ·2π·n/60, where τ is the torque (N·m), n the rotation (rpm) and P the power (W). It is the fundamental relation linking the three quantities of a rotating motor: the same motor delivers high torque at low speed or high speed at low torque, but the power is the product of the two. The basis of drive sizing. Enter the torque and the rotation.
Resultado
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Potência de motor (torque × RPM)
Torque, rotação e potência são as três grandezas que definem um motor — e estão ligadas por P = τ·ω = τ·2π·n/60. O torque (N·m) é a força de giro; a rotação (rpm) é a velocidade; a potência (W) é o que realmente realiza trabalho por unidade de tempo. A relação revela um princípio fundamental: um mesmo nível de potência pode ser entregue como muito torque em baixa rotação (um guincho) ou muita rotação com pouco torque (uma furadeira) — e é exatamente isso que uma caixa de redução faz, trocando rotação por torque sem mudar a potência (idealmente). Por isso dimensionar um acionamento exige conhecer as três: escolher o motor pela potência e a redução pelo torque na rotação de trabalho. Informe o torque e a rotação.
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Calculate the static torque a servomotor needs to hold a horizontal arm, T = m·g·L, from the tip mass m, gravity g (9.81 m/s²) and the arm length L. The result, in N·m, is the minimum torque the servo must provide to keep the arm horizontal against the load weight — the most unfavorable position. It is essential in designing robotic arms, grippers and servo-driven mechanisms, sizing the motor with a safety margin over this value. For arms with their own mass, the center of mass is used. Enter the mass and the arm length.
Motor Torque from Current
Calculate the torque produced by a DC motor, T = K_t·I, from the torque constant K_t (N·m/A) and the armature current I. The result, in N·m, shows a DC motor's torque is directly proportional to current — which is why measuring current is the simplest way to estimate (and limit) torque and detect overloads. The torque constant K_t is a motor characteristic (numerically equal to the back-EMF constant K_e in SI units). It is the basis of torque control in servomotors and robotics. Enter the torque constant and the current.
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.