Part comparison

ROBOTIS AX-18A vs ROBOTIS MX-12W

A side-by-side comparison of source-backed specifications within the same subcategory.

13 shared specs3 scored

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ROBOTISROBOTIS AX-18AAX-18A

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ROBOTISROBOTIS MX-12WMX-12W

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Directional spec summary

Counts across 3 numeric specifications with a clear higher-or-lower direction.

Part A leads

Tied

Part B leads

These are metric-by-metric differences, not an overall performance score. Check the values below.

Specifications

13 specifications compared side by side.

ROBOTIS AX-18A / ROBOTIS MX-12W
Compare bySpecification	AROBOTISROBOTIS AX-18A	BROBOTISROBOTIS MX-12W
Physical1
Weight	-18 g73 g lower	55 g
Performance2
Stall torque	1.8 Nm1.6 Nm higher	0.2 Nm
Maximum speed	97 rpm	470 rpm373 rpm higher
Electrical3
Nominal voltageUse-dependent	11.1 V	12 V
Minimum voltageUse-dependent	9 V	10 V
Maximum voltageUse-dependent	12 V	14.8 V
Mechanical & integration4
Motor kind	Smart servo	Smart servo
Drive principle	servo actuator	servo actuator
Architecture	Integrated motor controller reducer network	Integrated motor controller reducer network
Gear ratioUse-dependent	254:1	32:1
Control & communication3
Encoder	integrated position sensor	integrated position sensor
Communication interfaces	TTL	TTL
Control modes	position;velocity;current/PWM;feedback	position;velocity;current/PWM;feedback

AROBOTISROBOTIS AX-18A

BROBOTISROBOTIS MX-12W

Physical1

Weight

Part A-18 g73 g lower

Part B55 g

Performance2

Stall torque

Part A1.8 Nm1.6 Nm higher

Part B0.2 Nm

Maximum speed

Part A97 rpm

Part B470 rpm373 rpm higher

Electrical3

Nominal voltageUse-dependent

Part A11.1 V

Part B12 V

Minimum voltageUse-dependent

Part A9 V

Part B10 V

Maximum voltageUse-dependent

Part A12 V

Part B14.8 V

Mechanical & integration4

Motor kind

Part ASmart servo

Part BSmart servo

Drive principle

Part Aservo actuator

Part Bservo actuator

Architecture

Part AIntegrated motor controller reducer network

Part BIntegrated motor controller reducer network

Gear ratioUse-dependent

Part A254:1

Part B32:1

Control & communication3

Encoder

Part Aintegrated position sensor

Part Bintegrated position sensor

Communication interfaces

Part ATTL

Part BTTL

Control modes

Part Aposition;velocity;current/PWM;feedback

Part Bposition;velocity;current/PWM;feedback

Product sources

Product sources used by this comparison

ROBOTIS AX-18AOpen source ↗

ROBOTIS MX-12WOpen source ↗