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KST FZ825
Standard

KST FZ825

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10
Identity
Brand KST
Product Number FZ825
Category Hobby
Performance
Torque
8.4V 416.40 oz-in
7.4V 347.00 oz-in
6.0V 277.60 oz-in Average
Speed
8.4V 0.12 sec/60°
7.4V 0.14 sec/60°
6.0V 0.15 sec/60° Average
Physical
Weight 2.47 ozBelow Average
Dimensions L 1.575 in
W 0.787 in
H 1.496 in
Case Material Aluminum
Drivetrain
Motor Type Coreless
Gears Steel
Gear Spline/Teeth 25 T
Rotation Mode Positional
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Rotational Range 100°
Pulse Cycle 3.003 ms
Pulse Width 1000-2000 µs
Neutral Position 1520 µs
Refresh Rate 333 Hz
Angle Sensor Potentiometer
Control System PWM
Signal Voltage 3-5V
Electrical & Environment
Operating Voltage 6–8.4 V
Temperature -20–65 °C
Connectivity
Connector JR (Universal) estimate
Origin
Country of Origin China

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 62% of 1043 Digital Standard servos at 6.0V
SpeedAverage
Faster than 40% of 1041 Digital Standard servos at 6.0V
WeightBelow Average
Lighter than 34% of 1902 Digital Standard servos

Performance Analysis

Shaft Power 3.42–6.42 W
Power Density3.458 W/in³
More power-dense than 65% of 1759 Digital Standard servos
Torque Density3.9657 oz-in/g
Stronger than 59% of 1036 Digital Standard servos
Torque-to-Volume Ratio149.64 oz-in/in³
Denser torque than 63% of 1042 Digital Standard servos
Speed-to-Weight0.09524 (1/sec·g)
Faster than 30% of 1033 Digital Standard servos
Speed-Torque Trade-off41.64
Better balanced than 67% of 1031 Digital Standard servos
Torque Gain per Volt20.83%/V
More voltage-responsive (torque) than 84% of 850 Digital Standard servos
Speed Gain per Volt10.42%/V
More voltage-responsive (speed) than 20% of 871 Digital Standard servos
Voltage Range Width2.4 V
Wider voltage range than 57% of 1539 Digital Standard servos

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