TowerPro MG958 Digital High Torque Metal Gear Servo Motor
TowerPro MG958 Digital High Torque Metal Gear Servo Motor
TowerPro MG958 Digital High Torque Metal Gear Servo Motor
The TowerPro MG958 is a professional-grade digital servo motor engineered for high-torque applications requiring precise angular positioning and rapid response times. This metal gear servo is widely used by robotics engineers, automation technicians, and hobbyists building complex mechanical systems that demand reliability and consistent performance. The MG958 solves the critical challenge of delivering sustained torque output while maintaining digital feedback accuracy in demanding industrial and educational robotics projects.
Product Overview
The TowerPro MG958 operates on a brushless DC motor architecture with integrated metal gear reduction system, delivering exceptional torque multiplication while minimizing backlash and mechanical wear. The servo utilizes a closed-loop control system with digital feedback from an onboard potentiometer, enabling precise angle control within 0.09 degrees of resolution. This architecture ensures smooth operation across the full 180-degree range with minimal jitter, making it ideal for applications requiring repeatable positioning accuracy.
What distinguishes the MG958 from standard servos is its reinforced metal gear train constructed from hardened steel alloys, providing superior durability compared to plastic gear alternatives. The servo features dual ball bearings at the output shaft, reducing friction and extending operational lifespan even under continuous load conditions. The digital control circuitry processes PWM signals at standard servo frequencies, making it compatible with all major microcontroller platforms including Arduino, Raspberry Pi, and PLC systems.
Key Specifications
| Specification | Details |
| Product Type | Digital High Torque Metal Gear Servo Motor |
| Brand | TowerPro |
| Model | MG958 |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Operating Voltage | 4.8V to 7.2V DC |
| Stall Torque | 55 kg-cm at 6V, 65 kg-cm at 7.2V |
| Operating Speed | 0.23 sec/60 degrees at 6V |
| Gear Type | Metal Gear with Ball Bearings |
| Control Signal | PWM 1000-2000 microseconds |
| Dimensions | 40.7 x 20.2 x 36.2 mm |
| Weight | 55 grams |
Key Features
- High Torque Output: 55 kg-cm stall torque at 6V with capability to reach 65 kg-cm at 7.2V, enabling heavy lifting and load-bearing applications
- Metal Gear Construction: Hardened steel gear train with dual ball bearing support reduces backlash to under 1 degree and extends operational lifespan beyond 1000 hours
- Digital Feedback System: Integrated potentiometer provides real-time angle feedback with 0.09-degree resolution for closed-loop position verification
- Fast Response Time: 0.23 seconds per 60-degree rotation at 6V supply ensures rapid servo repositioning for time-critical robotic movements
- Wide Operating Range: Full 180-degree range with standard PWM control compatibility across Arduino, PLC, and embedded systems
- Thermal Management: Aluminum housing with optimized internal cooling channels maintains stable performance during extended operation
Applications and Use Cases
- Robotic Arm Joints: Primary servo motor for multi-axis robotic manipulators requiring sustained torque for object manipulation and assembly tasks
- Automated Pan-Tilt Camera Systems: Precision positioning servo for surveillance and photography equipment needing smooth, accurate angular control
- Industrial Automation: Heavy-duty positioning actuator for manufacturing conveyor systems, valve controls, and mechanical gate operations
- Humanoid Robot Development: Joint actuator for bipedal walking robots and humanoid platforms requiring synchronized multi-servo coordination
- Educational Robotics Projects: Reliable servo motor for university-level robotics competitions and STEM learning platforms
- Mechanical Prototype Development: Rapid prototyping servo for testing mechanical designs requiring high torque and repeatable positioning accuracy
How to Use
To implement the TowerPro MG958 in your project, connect the three-wire servo cable to your microcontroller: the red wire to positive power supply (4.8V-7.2V), black wire to ground, and yellow/orange signal wire to a PWM-capable digital pin. Configure your microcontroller to generate PWM signals with 50Hz frequency and pulse width between 1000-2000 microseconds, where 1500 microseconds corresponds to the neutral 90-degree position. Use a dedicated servo power supply rated for at least 2 amperes to prevent voltage sag when multiple servos operate simultaneously, as insufficient power delivery degrades response accuracy and can damage the servo electronics.
For optimal performance, mount the servo securely using the four mounting holes on the servo flange, ensuring the output shaft rotates freely without binding. Implement mechanical load limits to prevent stalling the servo continuously, as sustained stall current exceeding 1.5 amperes generates excessive heat and reduces gear lifespan. When controlling multiple servos, use a servo multiplexer or microcontroller with sufficient PWM channels to maintain independent control of each axis while distributing power draw evenly across your supply circuit.
Frequently Asked Questions
What is the maximum continuous torque rating of the MG958 servo?
The MG958 delivers 55 kg-cm stall torque at 6V and 65 kg-cm at 7.2V. However, continuous operation should be limited to 60-70 percent of stall torque to prevent thermal damage. For sustained loads exceeding 35 kg-cm, implement duty cycle management or use active cooling to maintain operating temperature below 70 degrees Celsius.
How do I calibrate the servo for precise center position?
Send a 1500-microsecond PWM pulse to center the servo at 90 degrees. If the servo does not center precisely, use your microcontroller software to apply trim offsets in 10-microsecond increments until the output shaft aligns with your mechanical reference point. Document the trim value for consistent repositioning across power cycles.
Can the MG958 operate continuously without overheating?
Yes, the MG958 features aluminum housing with internal cooling channels enabling continuous operation under moderate loads. Monitor case temperature during initial testing, as sustained loads above 40 kg-cm may require forced air cooling. The servo includes thermal protection circuitry that reduces power output if internal temperature exceeds 80 degrees Celsius.
Is the MG958 compatible with Arduino and Raspberry Pi?
Yes, the MG958 accepts standard PWM servo signals compatible with Arduino digital pins and Raspberry Pi GPIO pins configured for PWM output. Use the Arduino Servo library or RPi.GPIO PWM functions to generate the required 50Hz frequency with 1000-2000 microsecond pulse width variation.
What is the backlash specification of the metal gear train?
The MG958 metal gear train exhibits less than 1 degree of backlash due to precision manufacturing and dual ball bearing support. This makes it suitable for applications requiring repeatable positioning accuracy, though applications needing sub-degree precision should implement closed-loop feedback verification using the servo potentiometer output.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
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- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy TowerPro MG958 Digital High Torque Metal Gear Servo Motor Online in India
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