8MSA4M.R0-32
The 8MSA4M.R0-32 synchronous motor from B & R Automation is a precision-engineered component within the 8MS Three Phase Synchronous Motors series, optimized for high-performance motion control. Featuring a robust Curvic Coupling type and a module of 4 with 32 teeth, the design ensures reduced backlash (R0) and consistent torque transmission. Constructed from high-strength alloy steel with a surface hardness of 58-62 HRC, the coupling assembly maintains structural integrity under dynamic loading. The outer diameter measures approximately 136 mm, while the central bore (inner diameter) can be customized per application requirements. This bolt-on mounting system delivers a versatile face width that adapts to diverse industrial installations.
Performance characteristics include a 4.6 Nm rated torque with a 5.3 Nm stall torque capability, providing strong overload handling for rapid acceleration tasks. The motor operates at a 3000 RPM rated speed, scaling up to a 12000 RPM maximum speed for high-frequency cycles. Electrical dynamics are governed by a 25.1 A peak current rating, an electrical time constant of 5.71 ms, and a stator inductance of 24 mH, enabling efficient current response. With a maximum rotational acceleration of 80000 rad/s² and a rotor inertia of 2.65 kg·cm², this synchronous design minimizes cogging torque and maintains smooth performance across the entire speed range. A lightweight profile of 5.6 kg further enhances dynamic response and reduces mechanical loading on drive systems.
Designed for reliable integration into advanced automated systems, the 8MSA4M.R0-32 excels in robotics and indexing equipment where precision and repeatability are critical. The ground surface finish ensures consistent coupling engagement and long-term wear resistance. Operating across a wide temperature range of -20°C to 120°C, the motor sustains thermal stability under continuous-duty cycles. An integrated 8 Nm brake with an 18 W power rating at 24 V offers secure holding in vertical or safety-critical applications, with rapid response times for dynamic positioning. Adaptable bolt-on mounting and customizable inner diameter specifications facilitate seamless installation in modular industrial automation platforms.
