Part comparison

ROBOTIS AX-12A vs ROBOTIS AX-18A

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

13 shared specs3 scored

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ROBOTISROBOTIS AX-12AAX-12A

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ROBOTISROBOTIS AX-18AAX-18A

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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-12A / ROBOTIS AX-18A
Compare bySpecification	AROBOTISROBOTIS AX-12A	BROBOTISROBOTIS AX-18A
Physical1
Weight	-12 g	-18 g6 g lower
Performance2
Stall torque	1.5 Nm	1.8 Nm0.3 Nm higher
Maximum speed	59 rpm	97 rpm38 rpm higher
Electrical3
Nominal voltage	11.1 V	11.1 V
Minimum voltage	9 V	9 V
Maximum voltage	12 V	12 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 ratio	254:1	254:1
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-12A

BROBOTISROBOTIS AX-18A

Physical1

Weight

Part A-12 g

Part B-18 g6 g lower

Performance2

Stall torque

Part A1.5 Nm

Part B1.8 Nm0.3 Nm higher

Maximum speed

Part A59 rpm

Part B97 rpm38 rpm higher

Electrical3

Nominal voltage

Part A11.1 V

Part B11.1 V

Minimum voltage

Part A9 V

Part B9 V

Maximum voltage

Part A12 V

Part B12 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 ratio

Part A254:1

Part B254:1

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-12AOpen source ↗

ROBOTIS AX-18AOpen source ↗