E21NRFA-JNN-NS-00 by Kollmorgen

The Kollmorgen E21NRFA-JNN-NS-00 stepper motor is a precision-driven device from the renowned Kollmorgen E Hybrid Stepper Motors series, designed for precise motion control in industrial automation. Featuring a robust Frame Size: NEMA 34, a substantial Torque Holding: 349 oz-in, and a low Thermal Resistance: 3.9 °C/W, this motor excels at sustaining high torque at standstill while efficiently dissipating heat. Its double shaft configuration and splash proof option make it ideal for demanding manufacturing and assembly applications, where reliability and continuous operation are paramount.

Incorporating an 8 lead winding configuration, the E21NRFA-JNN-NS-00 offers versatile wiring options to match a range of control systems and drive technologies. The motor delivers an Axial Force: 35 N and Radial Force: 180 N, ensuring the shaft resists both thrust and side loads in heavy-duty installations. With a Phase Resistance: 5.8 Ohms and Rotor Inertia: 0.0083 kg·m2 × 10^-3, it provides predictable and stable stepping performance. The standard NEMA front end bell and available encoder mounting option enable easy integration with feedback devices for closed-loop control, while the available splash proof configuration protects internal components from moisture and contaminants.

Built with a Regular Construction with Lead wire Hookup and a standard NEMA front end bell, this motor is engineered for durability and straightforward installation. The precise L1 Max: 193.6 mm and L2: 174.24 mm dimensions ensure compatibility with existing NEMA 34 mounting kits, reducing system redesign time. The double shaft configuration facilitates dual-ended couplings and accessory attachments. Its robust construction and coating options support operation in temperatures from –20 to 40 °C, enhancing its operational lifespan in harsh environments. Conforming to NEMA standards and offering flexibility for encoder integration, the E21NRFA-JNN-NS-00 enhances productivity, reduces downtime, and delivers reliable performance in complex industrial automation systems.