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PTK 6820MG
Standard

PTK 6820MG

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-10-22
Identity
Brand PTK
Category Hobby
Performance
Torque
8.4V 374.96 oz-in
7.4V 305.52 oz-in
6.0V 249.97 oz-in
5.0V 208.31 oz-in Average
Speed
8.4V 0.09 sec/60°
7.4V 0.09 sec/60°
6.0V 0.10 sec/60°
5.0V 0.12 sec/60° Above Average
Physical
Weight 1.87 ozAbove Average
Dimensions L 1.43 in
W 0.80 in
H 1.61 in
Case Material Plastic
Drivetrain
Motor Type Cored
Gears Stainless Steel
Gear Spline/Teeth 25 T estimate
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Rotational Range 180°
Pulse Cycle 3.003 ms
Pulse Width 500-2500 µs
Neutral Position 1500 µs
Dead Band 2 µs
Refresh Rate 333 Hz
Angle Sensor Potentiometer
Control System PWM
Programmable Yes
Electrical & Environment
Operating Voltage 5–8.4 V
Temperature -15–60 °C
Water Rating IP65
Connectivity
Connector JR (Universal)
Wire Length 250 mm

Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Class Comparison

TorqueAverage
Stronger than 48% of 1055 Digital Standard servos at 5.0V
SpeedAbove Average
Faster than 69% of 1038 Digital Standard servos at 5.0V
WeightAbove Average
Lighter than 80% of 1872 Digital Standard servos

Performance Analysis

Shaft Power 3.29–7.97 W
Power Density4.327 W/in³
More power-dense than 73% of 1762 Digital Standard servos
Torque Density3.9304 oz-in/g
Stronger than 59% of 1048 Digital Standard servos
Torque-to-Volume Ratio113.10 oz-in/in³
Denser torque than 49% of 1053 Digital Standard servos
Speed-to-Weight0.16126 (1/sec·g)
Faster than 78% of 1031 Digital Standard servos
Speed-Torque Trade-off24.37
Better balanced than 43% of 1029 Digital Standard servos
Torque Gain per Volt23.53%/V
More voltage-responsive (torque) than 90% of 868 Digital Standard servos
Speed Gain per Volt10.15%/V
More voltage-responsive (speed) than 16% of 868 Digital Standard servos
Voltage Range Width3.4 V
Wider voltage range than 71% of 1552 Digital Standard servos
Dead-Band-to-Pulse-Width Ratio0.0010
Finer dead band than 76% of 501 Digital Standard servos

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Reviews (3)

Includes 3 reviews aggregated from around the web.

There are very few reviews for this servo on the web. A retailer listing shows 5 out of 5 from 3 reviews, but the written comments are mostly about delivery and general satisfaction rather than the servo's performance.

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