103-7501-70G2
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The Sanyo Denki 103-7501-70G2 belongs to the StepSyn Stepping Motors series and is a controller module. It operates with a power supply of 100-240 VAC, consumes 14.5 Watts, and features two electrically isolated CAN interfaces. Additionally, it requires a separate TB712 terminal block for screw-in mounting.
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Product Description:
The 103-7501-70G2 StepSyn Stepping Motor is a high-precision 5-phase stepper motor manufactured by Sanyo Denki a company known for its dependable motion control and cooling solutions. This motor is designed for applications that require precise positioning and stable rotation under load. This motor is commonly used in CNC machines, 3D printers, robotics and automated systems where reliable performance and high positional accuracy are required.
The 103-7501-70G2 StepSyn Stepping Motoroperates at a rated current of 0.75 A per phase and must be driven using a compatible 5-phase stepper motor driver. The mounting interface adheres to the NEMA 23 standard featuring a 4-hole square flange. Each mounting hole has an approximate diameter of 4.2 to 4.5 mm that is suitable for M4 screws and the center-to-center distance between holes is approximately 47.14 mm. This ensures compatibility with a wide range of existing mounting systems. It has a step angle of 0.72 degrees per step and it completes 500 steps per full revolution that offers smooth and accurate motion control. Passive cooling with no fan or heatsink makes the motor suitable for environments where space and noise reduction are critical.
The 103-7501-70G2 StepSyn Stepping Motor front shaft is a smooth round type with a flat section for coupling alignment while the rear shaft is splined to support the encoder or knob attachment. This dual-shaft design increases the flexibility of integration into motion systems. The motor features a 6-wire configuration that supports both bipolar and unipolar driving methods. The included wire colors—red, yellow, orange, black, blue and white are terminated with a white JST/Molex-style connector for secure electrical connections.
Frequently Asked Questions about 103-7501-70G2:
Q: Why does the 103-7501-70G2 use a 5-phase design instead of 2 or 4?
A: The 5-phase configuration provides smoother motion with less resonance and smaller step size, which is ideal for high-precision applications like CNC or robotics.
Q: How does the 0.72° step angle benefit motion control systems?
A: Smaller step angles result in finer position resolution and smoother acceleration curves, enhancing accuracy in sensitive or high-detail applications.
Q: What’s the purpose of having both a flat and splined shaft on the 103-7501-70G2?
A: The flat front shaft aids in secure coupling alignment while the splined rear allows for easy encoder or manual knob attachment without slippage.
Q: Can the 103-7501-70G2 motor be used in closed-loop systems?
A: Yes, its rear splined shaft supports encoder integration, allowing feedback-based closed-loop motion control when paired with a compatible driver and controller.
Q: What are the benefits of the motor’s passive cooling system?
A: Passive cooling eliminates the need for fans or heatsinks, reducing mechanical noise and space requirements in tightly packed systems.
