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M22NRFA-LNN-NS-00 by Pacific Scientific

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The Pacific Scientific POWERMAX II M Series motors with SIGMAX technology represent some of the most powerful steppers available. These 2-phase NEMA 23 sized hybrid stepper motors offer high torque per motor size, ranging from 0.67 to 1.79 N-m (95 to 253 oz-in) nominal holding torque, and speeds up to 3,000 rpm. They feature a polymer encapsulated stator for excellent thermal dissipation and a polymer end bell with threaded inserts, enhancing cooling efficiency and providing flexibility for mounting encoders and brakes. Exposed laminations further improve thermal dissipation, contributing to longer motor life.

Technical Specifications

Connection Options
Available with lead wires, terminal board or MS connectors
Dimensions
L Max = 3.10 inches (78.7 mm)
Electrical Inductance
2.5 mH
Mounting Frame
NEMA 23
Operating Temperature Range
-40°C to +40°C without heat sink
Phase Resistance
0.018 ohms
Rated Current
4.5A
Rotor Configuration
2 rotor stack (SIGMAX)
Rotor Inertia
0.55 oz-in-s² (1.42 x 10?³ kgm²)
Shaft Diameter
0.250 +/- 0.005 inches (6.35 mm)
Shaft Length
1.625 +/- .02 inches (41.28 mm)
Thermal Resistance
1.13°C/watt
Torque
178-252 oz-in (1.26-1.78 Nm)
Weight
2.5 lbs (1.13 kg)
Winding Insulation
Class B (130°C max winding temperature)

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1620 Old Apex Road, Cary, NC 27513, USA

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