RDS3218 20kg 3-Pole High-Torque Digital Servo – Double Bearing – 180 Degree – Red
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RDS3218 20kg 3-Pole High-Torque Digital Servo – Double Bearing – 180 Degree – Red

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  • Product SKU: LGSV019
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₹ 787 ₹ 1,699
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Highlights
  • Original, High Quality
  • KitsGuru Warranty
  • 180 Degree Rotation Control
  • 3-Pole Motor Design
  • 4.8-6.8V Voltage Range
  • PWM Position Control
  • Double Bearing Support
  • 342 Gear Ratio
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  • Video Support to be purchased separately
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Specification

Description

RDS3218 20kg Robot Digital Servo - 180 Degree

The RDS3218 is a 6V robot digital servo designed for controlled angular positioning in robotics and mechanical motion systems. It operates from 4.8V to 6.8V and delivers up to 25 kg-cm stall torque at 6.8V. The servo uses a 342 gear ratio, double-bearing construction, and a 3-pole motor, providing a compact motion-control solution for servo-driven mechanisms.

At 5V, the servo provides a no-load speed of 0.2 sec/60° with 21.5 kg-cm stall torque, while at 6.8V it reaches 0.17 sec/60° with 25 kg-cm stall torque. Position control uses a standard PWM interface with a 500-2500 µsec pulse-width range, 1500 µsec neutral position, 3 µsec dead-band width, and 50-330 Hz operating-frequency range.

Technical Details

  • Model: RDS3218 Red
  • Product Type: 6V 20kg Robot Digital Servo
  • Angle Variant: 180 Degree
  • Operating Voltage Range: 4.8-6.8V
  • Gear Ratio: 342
  • Bearing: Double Bearing
  • Motor: 3-Pole
  • Connector Wire: 300 ± 5 mm
  • Waterproof Performance: No
  • Control System: PWM (Pulse width modification)
  • Pulse-Width Range: 500-2500 µsec
  • Neutral Position: 1500 µsec
  • Running Degree: 180°
  • Dead-Band Width: 3 µsec
  • Operating Frequency: 50-330 Hz
  • Rotating Direction: Counterclockwise when pulse width increases from 500 to 2500 µsec

Features

  • Up to 25 kg-cm stall torque at 6.8V
  • 0.17 sec/60° no-load speed at 6.8V
  • 4.8-6.8V operating-voltage range
  • Digital PWM position control
  • 500-2500 µsec control pulse range
  • 180° running-angle variant
  • Double-bearing mechanical construction
  • 342 gear-ratio specification
  • 3 µsec dead-band width
  • 50-330 Hz operating-frequency range
  • 300 ± 5 mm three-wire connection lead

Dimension Drawing

Environmental Conditions

  • Storage Temperature Range: -30°C to 80°C
  • Operating Temperature Range: -15°C to 70°C
  • Operating Voltage Range: 4.8-6.8V

Electrical Specifications

  • At 5V - Idle Current (at stopped): 4 mA
  • At 5V - Operating Speed (at no load): 0.2 sec/60°
  • At 5V - Stall Torque (at locked): 21.5 kg-cm
  • At 5V - Stall Current (at locked): 1.6 A
  • At 6.8V - Idle Current (at stopped): 5 mA
  • At 6.8V - Operating Speed (at no load): 0.17 sec/60°
  • At 6.8V - Stall Torque (at locked): 25 kg-cm
  • At 6.8V - Stall Current (at locked): 2.5 A

Control Specifications

  • Control System: PWM (Pulse width modification)
  • Pulse-Width Range: 500-2500 µsec
  • Neutral Position: 1500 µsec
  • Running Degree: 180°
  • Dead-Band Width: 3 µsec
  • Operating Frequency: 50-330 Hz
  • Rotating Direction: Counterclockwise when pulse width increases from 500 to 2500 µsec

Connector and PWM Wiring

  • Connector Type Shown: JR 3-Pin, 2.54 mm Pitch
  • Wire-Color Option 1: Brown = Negative (-), Red = Positive (+), Orange = Signal (S)
  • Wire-Color Option 2: Black = Negative (-), Red = Positive (+), White = Signal (S)
  • Control Interface: PWM
  • Control-Signal Level in Illustration: 3.3-5V
  • PWM Period Illustration: 3.0-30 ms, Default 20 ms

Connector and PWM Wiring

PWM Position Reference

  • Pulse-Width Control Range: 0.5-2.5 ms (500-2500 µsec)
  • Neutral Pulse: 1.5 ms (1500 µsec)
  • 180° Control Reference: 0.5 ms = 0°, 1.5 ms = 90°, 2.5 ms = 180°

Applications :

  • Robot servo positioning systems
  • 180° angular positioning mechanisms
  • PWM-controlled robotics projects
  • Mechanical linkage positioning
  • Educational robotics systems
  • DIY automation mechanisms

Physical Attributes

  • Size: 40 x 20 x 40 mm
  • Weight: 99 g
  • Gear Ratio: 342
  • Bearing: Double Bearing
  • Connector Wire Length: 300 ± 5 mm
  • Motor: 3-Pole
  • Waterproof Performance: No

Package Includes

  • 1 x Servo Motor
  • 1 x Large U-Shaped Metal Mounting Bracket
  • 1 x Small U-Shaped Metal Mounting Bracket
  • 2 x Round Metal Servo Adapter Discs
  • 1 x Mounting Hardware Set (screws/bolts)