SKU: NXB-SRV-STP113-001 | Version: 1.0 | Brand: NexBot Robotics
The NexBot Robotics STP113-001 is a high-performance stepper motor designed for precision motion control applications within industrial robotic systems. This component provides reliable, open-loop positioning for a variety of tasks requiring high accuracy and repeatability without the complexity of a closed-loop servo system. Its robust construction ensures long operational life in demanding manufacturing environments. Engineered for high torque density, the STP113-001 stepper motor delivers a substantial holding torque of 3.2 Nm, enabling it to maintain static positions under load and resist external forces, which is critical for end-of-arm tooling and auxiliary axis stability. The motor features a standard 1.8-degree step angle (200 steps per revolution), providing fine resolution for smooth and precise movements. This level of control is essential for applications such as automated inspection, component assembly, and dispensing, where even minor positional errors can impact product quality. The motor's low-inertia rotor design facilitates rapid acceleration and deceleration, reducing cycle times and increasing overall system throughput. The motor housing is constructed from black anodized aluminum, which provides excellent thermal dissipation to maintain performance during continuous operation. This efficient heat management prevents overheating and ensures consistent torque output over extended periods. The STP113-001 operates on a standard 48VDC power supply, making it compatible with a wide range of industrial power systems and motor drivers. Its NEMA 34 frame size and standardized mounting face allow for straightforward integration into existing machine designs and NexBot Robotics systems. Installation is simplified with a pre-wired cable lead, ensuring secure and reliable electrical connections. Regular inspection of the motor's mounting and connections is recommended, but the unit itself is designed for minimal maintenance throughout its service life.
The NexBot Robotics STP113-001 is a NEMA 34 frame stepper motor designed for high-performance industrial automation. It features a holding torque of 3.2 Nm and is intended for use in open-loop positioning systems. Its 86 x 86 x 113 mm dimensions make it suitable for a wide range of machinery.
This motor requires a stepper driver compatible with its electrical characteristics and a stable 48VDC power supply. Ensure your selected driver can provide the necessary phase current to achieve the rated torque. Refer to the motor's speed-torque curve to match performance to your application.
After completing the installation, configure your controller for a simple, low-speed motion profile. Command a short move in one direction and then the other to verify correct wiring and system response. During this test, listen for any abnormal sounds and watch for excessive vibration.
The STP113-001 provides 3.2 Nm of holding torque when stationary. This torque value decreases as rotational speed increases. Always operate the motor within the limits shown on its speed-torque curve to prevent stalling and loss of position.
For improved resolution and smoother, quieter motion at low speeds, configure your driver to use microstepping. While settings like 1/16 or 1/32 step reduce vibration, they can also slightly reduce effective torque. Choose a setting that provides the best balance for your specific application's needs.
The motor is designed to dissipate heat through its aluminum body and mounting flange. Mounting the motor to a large, thermally conductive metal plate or machine frame is critical for effective cooling. If operating near the motor's maximum performance limits, monitor its case temperature to ensure it stays within the specified range.
Like all stepper motors, the STP113-001 may exhibit mechanical resonance at certain speeds, leading to increased noise and vibration. If this occurs, try changing the operating speed, adjusting driver current settings, or enabling any anti-resonance features available on your stepper driver.
| Interval | Task | Notes |
|---|---|---|
| Monthly | Visually inspect motor cable for signs of chafing, cracking, or damage, especially at flex points. Ensure cable is properly secured. | Critical for applications involving frequent motion, such as CNC machines or robotic arms. |
| Quarterly | Clean dust and debris from the motor's housing using a dry cloth or low-pressure compressed air. A clean housing dissipates heat more effectively. | Do not use liquid cleaners or solvents, as they can damage seals and compromise the IP54 rating. |
| Quarterly | Check the tightness of the motor's mounting bolts. Use a torque wrench to verify they are secured to the original specification. | Vibration can cause fasteners to loosen over time, leading to misalignment. |
| Annually | Inspect the shaft coupling for any signs of wear, fatigue, or backlash. Ensure its set screws are tight. | A worn coupling can degrade positioning accuracy and should be replaced. |
| Annually | Listen for any changes in the motor's operating sound. Grinding, squealing, or rumbling noises may indicate internal bearing wear. | The motor's bearings are sealed for life and are not user-serviceable. Contact support if bearing failure is suspected. |
| Symptom | Possible Cause | Solution |
|---|---|---|
| Motor hums but does not rotate. | One motor phase is disconnected or the load is jammed. | Power down. Check wiring for all four motor leads. Manually check if the connected mechanism can be moved. |
| Motor runs excessively hot. | Driver current is set too high or there is insufficient heat sinking. | Reduce the driver current setting to match the motor's rating. Ensure the motor is mounted securely to a large metal surface. |
| Motor rotates in the wrong direction. | The wires for one phase are reversed. | Power down. At the driver, swap the two wires for a single phase (e.g., reverse the B+ and B- connections). |
| Motor stalls or loses steps during a move. | Load exceeds motor torque capacity at the commanded speed, or acceleration is too aggressive. | Reduce the acceleration and velocity settings in the controller. Verify there is no binding in the mechanics. |
| Motor is very loud and vibrates at specific speeds. | Operation at a natural resonant frequency. | Adjust the operating speed to be higher or lower than the resonant point. If available, enable the anti-resonance feature on the driver. |
| Movement is jerky and not smooth. | Driver is set to full-step or half-step mode. | Configure the driver for a higher microstepping resolution (e.g., 1/8 or 1/16 step) to smooth out motion. |
| Motor has no holding torque and shaft spins freely. | No power to the driver, or the driver's 'enable' signal is inactive. | Check the 48VDC power supply to the driver. Verify the controller is sending the 'enable' signal to the driver. |
| Parameter | Value | Unit |
|---|---|---|
| Weight | 3.5 | kg |
| Material | Anodized Aluminum | |
| Voltage | 48VDC | |
| IP Rating | IP54 | |
| Country of Origin | KR | |
| Dimensions | 86 x 86 x 113 mm | |
| Torque | 3.2 Nm |