RDS3115 MG Digial Metal Gear Dual Shaft 15 kg 180º Servo Motor with Holders

The RDS3115 MG is a high-torque digital servo motor featuring metal gear construction with dual shaft output capability, delivering 15 kg/cm of torque across a 180-degree operating range. This servo is engineered for professional robotics, industrial automation, and precision control applications requiring simultaneous dual-axis actuation. It solves the critical challenge of synchronized dual-shaft positioning in compact spaces while maintaining exceptional holding strength and repeatability.

Product Overview

The RDS3115 MG operates on the principle of pulse-width modulation (PWM) control, where incoming servo signals are decoded by the integrated digital controller to position the output shafts with extreme precision. The metal gear train construction eliminates backlash common in plastic gear servos, ensuring accurate positioning within 1-2 degrees across the full 180-degree travel range. The dual shaft configuration allows simultaneous control of two independent mechanical loads from a single servo control signal, making it ideal for symmetrical motion requirements in robotics and automation systems.

This servo motor incorporates a high-speed brushless motor coupled with precision ball bearings on both output shafts, enabling smooth operation at 0.12-0.14 seconds per 60 degrees under no-load conditions. The metal gear assembly provides superior durability under continuous cyclic loading, with rated lifespan exceeding 10,000 hours of operational use. The included servo holders feature reinforced aluminum construction with multiple mounting points, allowing flexible integration into various mechanical frameworks while maintaining shaft alignment and reducing vibration transmission.

Key Specifications

Specification	Details
Product Type	Digital Metal Gear Servo Motor with Dual Shaft Output
Brand	RDS
Model Number	RDS3115 MG
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
Torque Output	15 kg/cm at 6V, 18 kg/cm at 7.4V
Operating Range	180 degrees continuous rotation
Speed	0.12 seconds per 60 degrees at 6V (no-load)
Control System	Digital PWM with programmable endpoints
Voltage Input	4.8V to 7.4V DC
Gear Material	Hardened metal alloy with self-lubricating properties
Shaft Configuration	Dual output shafts with synchronized positioning
Positioning Accuracy	±1-2 degrees repeatability

Key Features

• Dual Synchronized Shaft Output: Both output shafts receive identical control signals, enabling perfectly synchronized dual-load actuation without additional servo units or mechanical linkages
• Metal Gear Construction: Hardened alloy gears eliminate backlash and provide superior torque transmission compared to plastic alternatives, ensuring consistent performance under heavy continuous loads
• Digital Control System: Integrated microprocessor accepts standard servo PWM signals (1000-2000 microseconds) from any standard RC receiver, microcontroller, or servo controller
• Precision Ball Bearings: Both output shafts ride on precision ball bearings, reducing friction and enabling smooth operation with minimal vibration transmission to mechanical structures
• Included Servo Holders: Reinforced aluminum mounting brackets with multiple attachment points provide rigid mechanical coupling while allowing tool-free installation and removal
• Wide Voltage Operating Range: Functions reliably between 4.8V and 7.4V, accommodating various battery configurations and power supply specifications

Applications and Use Cases

• Humanoid Robotics: Dual shaft servos drive synchronized arm or leg movements, requiring precise simultaneous control of mirrored mechanical joints to achieve natural bipedal locomotion
• Industrial Automation: Gripper mechanisms and parallel-axis actuators utilize dual shafts for symmetrical clamping force distribution, improving gripping precision and load stability
• Aerial Drone Control: Quadcopter and hexacopter frame designs implement dual-shaft servos for coordinated control surface deflection on symmetrical aircraft configurations
• Precision Laboratory Equipment: Automated test fixtures and measurement apparatus employ dual-shaft servos for synchronized positioning of optical components, reducing measurement error from mechanical misalignment
• Mechanical Prosthetics: Dual-shaft configuration enables synchronized finger or limb movements in bionic devices, providing more natural motion patterns and improved user control

How to Use

Begin by connecting the servo to your control system using a three-wire cable: signal (typically yellow/white), power (red), and ground (black/brown). Apply 5-7.4V DC to the power and ground pins, ensuring your power supply can deliver at least 2 amps during peak torque demand. Connect the signal wire to your servo controller output, which must generate standard PWM pulses between 1000-2000 microseconds at 50 Hz frequency. Most Arduino boards, RC receivers, and servo controllers output this signal natively.

Mount the servo using the included aluminum holders, positioning the dual shafts to align with your mechanical load points. Ensure both shafts can rotate freely through the full 180-degree range without obstruction. Center the servo by sending a 1500 microsecond pulse, which positions both output shafts at the neutral 90-degree position. Program your control logic to sweep the pulse width between 1000-2000 microseconds to achieve full range motion. For applications requiring precise endpoint calibration, most digital servo controllers allow software adjustment of minimum and maximum pulse values. Test the servo under no-load conditions first, then gradually increase mechanical load while monitoring current draw to ensure it remains below your power supply's rated capacity.

Frequently Asked Questions

What is the difference between the RDS3115 MG and standard single-shaft servos?

The RDS3115 MG features two independent output shafts that receive identical control signals, enabling synchronized dual-load actuation from a single servo control input. Standard single-shaft servos require two separate units for synchronized motion. The dual-shaft design reduces component count, simplifies control logic, and saves weight in robotics and automation projects. Both shafts maintain perfect synchronization with less than 1 degree of phase difference under normal operating conditions.

Can I control each shaft independently with different positions?

No, the RDS3115 MG design maintains synchronized positioning of both shafts from a single control signal. Both shafts always receive identical PWM commands and move to the same angular position simultaneously. If your application requires independent shaft control, you would need two separate servo motors. However, the synchronized dual-shaft design is specifically optimized for applications requiring perfectly matched motion, such as parallel grippers or symmetrical robotic limbs.

What is the maximum continuous current draw at rated torque?

At 15 kg/cm rated torque output with 6V supply voltage, the RDS3115 MG draws approximately 1.8-2.2 amps during continuous operation. Peak current during rapid acceleration or stall conditions can reach 3.5-4 amps. Your power supply must be rated for at least 2 amps continuous capacity with sufficient headroom for peak transient currents. Using an undersized power supply will cause voltage sag, reducing available torque and potentially triggering servo protection circuits that limit performance.

Is the servo waterproof or sealed against dust and moisture?

The RDS3115 MG features standard servo construction with non-sealed gear compartments, making it unsuitable for direct water immersion or dusty environments. The servo case is plastic with metal gears, and while it can tolerate light moisture exposure, prolonged water contact or high-humidity environments will degrade performance and cause corrosion. For outdoor or wet applications, consider protective enclosures or conformal coating on the circuit board. The servo holders are aluminum and naturally resist corrosion better than the servo body itself.

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.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy RDS3115 MG Digial Metal Gear Dual Shaft 15 kg 180º Servo Motor with Holders Online in India

Purchase the RDS3115 MG Digial Metal Gear Dual Shaft 15 kg 180º Servo Motor with Holders online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on RDS3115 MG Digial Metal Gear Dual Shaft 15 kg 180º Servo Motor with Holders with fast shipping and expert support.

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