Cymotorix manufactures hybrid stepper motors across the full NEMA 8 (20mm) to NEMA 51 (130mm) range, in 2-phase, 3-phase, and closed-loop configurations. Step angles cover 1.8°, 0.9°, and 1.2°, with holding torque from 0.01 N·m on the smallest frame up to 28 N·m. Every motor holds step accuracy within ±5%, insulation resistance of 100MΩ minimum at 500VDC, and an 80°C maximum temperature rise. We wind, assemble, and test in our own Changzhou plant, and customize shaft, winding, encoder, and connector to your drawing. The sections below break the range down by type and NEMA frame so you can match motor to load.
Full NEMA 8 to NEMA 51 range across 2-phase, 3-phase, and closed-loop hybrid stepper motors, holding torque from 0.01 N·m to 28 N·m.
Shaft, winding, lead wire, connector, encoder, gearbox, and brand logo built to your drawing. Over 70% of our orders carry a custom change.
Matched stepper motor drivers supplied with the motor, so the motor-driver pair is sorted before it ships.
Standard samples ship in 3–5 days. Custom prototypes in 10–15 working days. Selection questions answered within 24 hours.
We build three main types of stepper motors — 2-phase, 3-phase, and closed loop. The 2-phase hybrid is our highest-volume product, covering NEMA 8 through NEMA 42. If your application needs lower vibration at higher speeds, go with 3-phase. If you need position feedback and anti-lost-step protection, the closed loop series is the right fit.
| 2 Phase | 3 Phase | Closed Loop | |
|---|---|---|---|
| STEP ANGLE | 1.8° / 0.9° | 1.2° | 1.8° |
| FRAME SIZE | NEMA 8–42 | NEMA 23–51 | NEMA 23–42 |
| HOLDING TORQUE | 0.01–28 N·m | 0.6–25 N·m | 0.3–12 N·m |
| FEEDBACK | Open loop | Open loop | Encoder |
| BEST FOR | General positioning | Low vibration, high speed | Anti-lost-step, variable load |
· 1.8° and 0.9° step angles (2-phase), 1.2° (3-phase)
· Holding torque from 0.01 N·m to 28 N·m across the range
· NEMA 8, 11, 14, 17, 23, 24, 34, 42, and 51 frame sizes
· CE and RoHS certified, 80°C max temperature rise
· 2-phase stepper motor: the standard, NEMA 8–42, lowest cost, widest driver choice
· 3-phase stepper motor: lower vibration and better high-speed torque, NEMA 23–51
· closed loop stepper motor: encoder feedback, no lost steps, NEMA 23–42
· Matched stepper motor drivers supplied with the motor
· Mechanical: shaft diameter and length, flange, mounting holes, lead exit direction
· Electrical: winding voltage and current, insulation class, connector type
· Integration: encoder, gearbox or brake mounted and tested as one unit
· Branding: your logo on the motor body, custom labels and packaging
· Stator: laminated silicon steel core, precision-wound copper
· Rotor: permanent magnet plus toothed iron caps (hybrid type)
· Bearings: ball bearings rated past 20,000 hours
· Housing: anodized aluminum or painted steel end caps
Stepper motor and servo motor manufacturer in Changzhou, China since 2004. We run 5 production lines with annual output over 1,000,000 motors, serving OEM customers in 30+ countries.
About Us facility Solutions CertificationsA stepper motor is a brushless motor that divides one full rotation into a fixed number of equal steps. The driver sends current pulses to the stator windings in sequence, and the rotor advances one step per pulse — 1.8° on a 200-step motor, 0.9° on a 400-step motor. Because each pulse equals a known angle, the controller tracks position by counting pulses, with no feedback sensor needed in a basic system. That open-loop simplicity makes steppers a low-cost choice for accurate positioning in 3D printers, CNC machines, medical pumps, and packaging lines.
We build hybrid stepper motors in three lines. The 2-phase stepper motor is the standard for general positioning and uses the most common, lowest-cost drivers. The 3-phase stepper motor runs at a 1.2° step angle with lower vibration and better high-speed torque. The closed loop stepper motor adds an encoder so it never loses a step under varying load. All three are hybrid type — permanent magnet plus toothed iron rotor.
Frame sizes run NEMA 8 (20mm), NEMA 11 (28mm), NEMA 14 (35mm), NEMA 17 (42mm), NEMA 23 (57mm), NEMA 24 (60mm), NEMA 34 (86mm), NEMA 42 (110mm), and NEMA 51 (130mm) on the 3-phase line. Holding torque spans 0.01 N·m on the smallest 2-phase frame up to 28 N·m on the largest. Each NEMA size has its own page with the full model-by-model spec table.
Four numbers settle most selections: frame size (NEMA, set by torque and available space), holding torque (leave roughly 50% headroom over your worst-case load), rated current (match it to your driver's output), and step angle (1.8° standard, 0.9° or 1.2° for finer resolution). If lost steps can't be tolerated, move to a closed loop motor. Send us the load, speed, and accuracy target and our engineers confirm the motor before you order.
Yes. We supply matched stepper motor drivers with the motor, so commutation and current are set up before shipping and you don't have to pair them yourself. Driver options cover microstepping for smoother low-speed motion, plus closed-loop drivers for the encoder-equipped line.
Yes. Shaft, winding, lead length, connector, encoder, gearbox, and brake are all made to your drawing — over 70% of our orders involve some change. We also offer private labeling: your logo on the motor body, custom packaging, and documentation for distributors and system integrators.
A practical reference for engineers and procurement teams evaluating stepper motors for OEM equipment. It covers how a stepper works, the main types, the specs that matter, and how to match a motor to your application.
A stepper motor is a brushless DC motor that splits a full rotation into a fixed number of equal steps — typically 1.8° for a 200-step motor or 0.9° for a 400-step one. The stator carries sets of coil windings. When the driver energizes them in sequence, the magnetic field steps around in discrete increments and pulls the toothed rotor along one step at a time. Since each pulse produces a fixed angular move, the controller knows the rotor position by counting pulses — no feedback sensor required. That open-loop control is what makes steppers an accurate, low-cost choice for positioning, which is why they run 3D printers, CNC machines, medical pumps, packaging lines, and thousands of other machines.
The main stepper motor types split by rotor construction and by control method. By rotor, there are three classic types:
By how they're wired and driven, the practical split is the one that drives a buying decision:
| 2 Phase | 3 Phase | Closed Loop | |
|---|---|---|---|
| Step angle | 1.8° / 0.9° | 1.2° | 1.8° |
| Vibration | Moderate | Lower | Moderate |
| Lost steps | Possible | Possible | Corrected |
| Cost | Lowest | Higher | Middle |
| Frame range | NEMA 8–42 | NEMA 23–51 | NEMA 23–42 |
NEMA is the flange dimension, not the motor type. The number is the faceplate size: NEMA 17 is 42mm square, NEMA 23 is 57mm, NEMA 34 is 86mm, and so on. A bigger frame generally means more torque and more room, so frame size is the first thing to fix when you size a motor. Within one frame, a longer body gives higher holding torque. Our range:
Most selections come down to four numbers and one control decision:
Send us the load, speed target, frame constraint, and accuracy you need, and our engineers confirm the motor and driver before you order.
More than 70% of our orders involve a custom change. We adjust shaft (diameter, length, D-cut, keyed, gear, hollow, double-shaft), winding (voltage, current, insulation class), lead length and connector, and we mount encoders, gearboxes, or brakes and test the assembly as one unit. As a China-based stepper motor manufacturer and supplier, we run private labeling too: your logo on the motor body with custom packaging — built for distributors and system integrators who need a clean, branded supply.
