4.5Nm Stepper Motor

The 4.5Nm Stepper Motor belongs to a special line of electric motors, utilizing permanent magnets and pure copper windings to generate high torque and reduce magnetic losses. The standard 1.8° step angle allows the motor to operate with high precision, especially when combined with a microstep driver. The stepper motor features an alloy steel shaft design, a powder-coated metal housing, and dual ball bearings, helping the motor run smoothly, handle heavy loads, and operate durably in industrial environments.

General design of the 4.5Nm Stepper Motor

The 4.5Nm Stepper Motor features a square-shaped body with dimensions of 86mm x 86mm (size 86). The outer housing is cast from thick aluminum alloy, finished with a matte black powder coating and deep heat dissipation fins. The front CNC-machined bright flange with 4 large-diameter bolt holes ensures secure mounting. The large-diameter motor shaft (typically 12.7mm or 14mm) is made of hardened steel with a keyway for locking the pulley, along with an insulated lead wire assembly safely positioned at the rear of the machine.

Structure of the 4.5Nm Stepper Motor

The structure of the 4.5Nm Stepper Motor is optimized for high torque, stable operation, and long service life, with detailed components as follows:

• Stator (Coil): Electrical steel core assembled with thin laminations to reduce iron loss, combined with 100% pure copper winding resistant to high temperatures. Large wire cross-section allows handling high current intensity without localized overheating.
• Rotor (Magnet): Rotor shaft mounted with ultra-high magnetic density rare-earth magnets. The rotor surface is precisely serrated to optimize magnetic flux and enhance holding torque.
• Bearing system: Uses large-sized bearings (typically 6000 series or larger) with excellent radial and axial load capacity, helping the shaft rotate smoothly and durably under belt or rack tension.
• Heat sink housing: Made of die-cast aluminum alloy, featuring deep-grooved heat dissipation fins along the body to quickly release heat when the motor operates at full capacity.

Technical specifications of the 4.5Nm Stepper Motor

The 4.5Nm Stepper Motor features NEMA 34 frame size (86mm x 86mm) and NEMA 24 frame size (60mm x 60mm)

Applications of the 4.5Nm Stepper Motor

The 4.5Nm Stepper Motor is a 2-phase, 4-wire stepper motor line with a powerful 4.5Nm torque suitable for many devices requiring high pulling force and high precision, applied in various types of equipment:

• Large-format CNC milling machines: Driving X and Y axes for 1325 wood carving machines, aluminum milling machines, and granite cutters. The 4.5Nm force is strong enough to overcome large cutting resistance, ensuring smooth tool paths without stuttering or breaking bits.
• Plasma and oxy-gas cutting machines: Moving heavy cutting heads along long-stroke rails. The motor helps the system accelerate/decelerate quickly (high acceleration) without step loss.
• Industrial automation machinery: Applied in heavy-load lifting mechanisms, industrial packaging machines, or automatic material feeding systems.
• Industrial robots: Used for load-bearing joints of robot arms, where high static holding force is needed to prevent the robot from sagging during power loss.
• Plastic extruders, component manufacturing machines, testing and sample measuring machines.
• Equipment in automation lines requiring continuous and stable torque.

The 4.5Nm Stepper Motor is widely chosen for its stability, durability, and optimized cost, featuring prominent advantages: large torque, high industrial durability, and easy integration with popular high-power driver lines on the market.

Don’t miss the stepper motor video and summary video if you want a close-up look at each model, reference parameters, and select the right product for your machinery system.