RC4WD Z-E0137

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Technical Specifications

Last Updated: 2026-10-26

Identity
Brand
Product Number	Z-E0137
Category	Hobby
Performance
Torque	6.0V 81.95 oz-in 4.8V 74.03 oz-in Top 10%
Speed	6.0V 0.12 sec/60° 4.8V 0.14 sec/60° Average
Stall Current	1–1.2 AAverage
Physical
Weight	0.37 ozTop 10%
Dimensions	L 1.27 in W 0.46 in H 1.22 in
Drivetrain
Gears	Metal
Gear Spline/Teeth	21 T
Rotation/Support	Bushing
Control & Signal
Modulation	Analog
Pulse Width	500-2500 µs
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Water Rating	None
Origin
Country of Origin	USA

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Top 10% Stronger than 96% of 75 Analog Mini servos at 4.8V
Speed	Average Faster than 35% of 75 Analog Mini servos at 4.8V
Weight	Top 10% Lighter than 91% of 155 Analog Mini servos
Stall Current	Average Lower draw than 38% of 27 Analog Mini servos

Performance Analysis

Shaft Power	0.98–1.26 W
Power Density	1.772 W/in³ More power-dense than 95% of 153 Analog Mini servos
Torque Density	7.0505 oz-in/g 1st-highest torque density of 75 Analog Mini servos
Torque-to-Volume Ratio	103.87 oz-in/in³ 5th-highest torque-to-volume ratio of 75 Analog Mini servos
Speed-to-Weight	0.68027 (1/sec·g) Faster than 81% of 75 Analog Mini servos
Speed-Torque Trade-off	10.36 Better balanced than 93% of 75 Analog Mini servos
Current-per-Torque Ratio	0.0162 A/oz-in More efficient than 92% of 72 Mini servos
Torque Gain per Volt	8.92%/V More voltage-responsive (torque) than 17% of 55 Analog Mini servos
Speed Gain per Volt	13.88%/V More voltage-responsive (speed) than 22% of 55 Analog Mini servos
Voltage Range Width	1.2 V Wider voltage range than 4% of 85 Analog Mini servos