Abstract: To investigate real-time measurement methods for forging force during radial forging, a coupled dynamic model of the forging system was established, incorporating the forging motor, tire-type coupling, and forging mechanism. An inversion model correlating real-time forging force with motion states of the eccentric shaft and motor was derived, converting the difficult-to-measure forging force into measurable motor speed signals. Based on this, a dynamic model-based forging force measurement method for radial forging machines was proposed. Validation was performed using IN625 superalloy processing as a test case. Comparative experiments were conducted via Simufact numerical simulation and a 1.6 MN radial forging machine platform. Peak forging forces over a designated period were statistically analyzed. Results demonstrate that the average error between peak forging forces calculated by the inversion model and those simulated by Simufact does not exceed 8.7%. This outcome confirms the feasibility and effectiveness of indirect forging force measurement based on dynamic models.