VEXTA Stepping Motor Step PK243A1A-SG36 2-PHASE 0.95A 4.2 0.05 /step
( Brand: Vexta ), ( Manufacturer Part Number: PK243A1ASG36 ), ( Model: PK243A1A-SG36 ), ( Part Type: Motor ), ( Country Of Origin: United States )
Review VEXTA 2-phase Stepping Motor Dc 0.95a 4.2 0.05 /step
The **Vexta PK243A1ASG36** is a high-performance, two-phase stepping motor engineered for precision motion control applications where reliability, efficiency, and compact design are paramount. Part of Vexta s advanced PK series, this motor combines robust construction with cutting-edge technology to deliver seamless, repeatable movement with minimal vibration and noise. With a rated current of **0.95A per phase** and a holding torque of **4.2 Nm**, it excels in demanding environments such as CNC machining, industrial automation, 3D printing, and robotic systems where consistent torque and positional accuracy are critical. The motor s **0.05 per step** resolution ensures ultra-fine movement control, making it ideal for applications requiring high precision, such as micro-positioning, medical equipment, or high-speed indexing tasks. Built with a **hybrid stepping design**, it integrates permanent magnets with a variable reluctance rotor, optimizing torque density while reducing cogging effects and improving smoothness during operation. The **SG36** variant features a **36mm shaft diameter**, providing enhanced rigidity and load-bearing capacity, which is particularly advantageous for heavy-duty applications or when interfacing with high-inertia loads. The motor s compact yet sturdy housing, constructed from high-quality materials, ensures durability under continuous operation, while its low inductance and fast response time enable rapid acceleration and deceleration without sacrificing stability. Whether integrated into a custom automation system or deployed in a high-precision manufacturing setup, the PK243A1ASG36 delivers a perfect balance of power, precision, and efficiency, making it a versatile choice for engineers and designers seeking a dependable stepping motor solution.
### **Pros and Cons of buying a Vexta PK243A1ASG36 (or PK243A1A-SG36) 2-Phase Stepping Motor**
#### **Pros:**1. **High Precision and Resolution** The motor offers a fine step angle of **0.05 per step**, making it suitable for applications requiring high positional accuracy, such as CNC machines, 3D printers, or automated systems.
2. **Low Current Draw (0.95A)** The motor operates at a relatively low current, which can reduce power consumption and heat generation compared to higher-current alternatives.
3. **Compact and Lightweight Design** The PK243 series is designed for precision applications where space is limited, making it ideal for embedded systems or compact machinery.
4. **Reliable Performance** Vexta is a well-known brand in stepper motor manufacturing, known for durability and consistent performance in industrial and hobbyist applications.
5. **Compatibility with Common Drivers** The motor is designed to work with standard stepper motor drivers (e.g., DM542, DRV8825, or TB6600), making it easy to integrate into existing setups.
6. **Low Torque Ripple** The hybrid design helps reduce torque fluctuations, improving smoothness in motion control.
7. **Cost-Effective for High-Precision Needs** While not the cheapest option, its performance justifies the cost for applications requiring fine control.
#### **Cons:**1. **Higher Initial Cost** Compared to basic stepper motors, this model is more expensive due to its precision and low-step angle.
2. **Requires Proper Driver and Power Supply** A suitable stepper driver (with microstepping capability) and a stable power supply are necessary to avoid overheating or performance issues.
3. **Sensitivity to Overloading** If the motor is subjected to excessive torque or stalled conditions, it may overheat or fail prematurely if not properly cooled.
4. **Limited Continuous Torque at Low Speeds** While it excels in precision, its torque may drop significantly at very low speeds, requiring additional mechanical support in some applications.
5. **Noise and Vibration at High Speeds** Due to its fine step angle, the motor may produce more noise and vibration when operating at high speeds unless properly tuned with microstepping.
6. **Requires Maintenance** Like all stepper motors, it benefits from occasional lubrication of leadscrews or belts in mechanical systems to ensure longevity.
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### **Conclusion**
The **Vexta PK243A1ASG36 (or PK243A1A-SG36)** is an excellent choice for applications demanding **high precision, smooth motion, and reliability**, such as CNC machines, 3D printers, robotic arms, or automated positioning systems. Its **low-step angle (0.05 )** and **low current draw (0.95A)** make it well-suited for tasks where fine control is critical.
However, it is **not ideal for high-torque, low-cost applications** where a standard NEMA 17 or NEMA 23 motor would suffice. The **higher upfront cost** and **requirement for proper driver configuration** mean it is best suited for users who already have experience with stepper motors or are building precision systems.
If your project **requires extreme accuracy, minimal vibration, and smooth operation**, this motor is a strong recommendation. If you are working on a **budget-constrained or high-torque application**, a different motor (such as a NEMA 23 with higher current or a servo motor) may be more appropriate.
### **Final Recommendation:** **Buy this motor if:**- You need **sub-degree positioning accuracy** (e.g., for CNC, 3D printing, or automated inspection).
- Your system can accommodate **proper driver settings (microstepping, current limiting)**.
- You are willing to invest in a **high-performance, low-noise solution** for precision motion control.
**Avoid this motor if:**- You are working on a **low-budget project** where a standard NEMA 17/23 motor would suffice.
- Your application requires **extremely high torque at low speeds** without additional mechanical assistance.
- You lack experience with **stepper motor drivers and tuning**, as improper setup can lead to poor performance or failure.
For best results, pair this motor with a **high-quality driver (e.g., DM542 with microstepping) and a stable power supply** to maximize its potential.
Details:
The Vexta PK243A1A-SG36 2-Phase Stepping Motor is a reliable and efficient electric motor designed for industrial automation motion control applications. The Vexta brand is known for producing high-quality motors, making this model a suitable choice various business and industrial uses requiring precise controlled movement. With a DC rating of 0.95A and resistance 4.2, this motor offers precise accurate motion control with step angle 0.05. Has been lightly used and works fine.
part #: pk243a1asg36 prices
- $50.00-$219.99
specifications oelemot:
- brand: Vexta
- mpn: Pk243a1asg36
- model: Pk243a1a-sg36
- part type: Motor
- country of origin: United States
returns oelemot:
- policy: No Returns
seller oelemot:
- city: Corvallis, Oregon
- # reviews: 16
- rating: 100.0%
payments oelemot:
- other
- wallet: Apple-pay
- credit card: Discover
general oelemot:
- Industrial Automation Motion Controls > Electric Motors > General Purpose Motors
- condition: Used
offer oelemot:
- availability: In Stock
- sold: 0
- quantity: 1
- options: Ship-to-home
- started: May 14, 2026
shipping oelemot:
- cost: $9.52
- type: Calculated
- transit: 6-9 Days
- service: USPS Ground Advantage
- carrier: USPS
- class: Standard
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