HEAD-TO-HEAD · ACTUATORS & JOINT MODULES

MyActuator RMD-X8-P6-20-C-N vs CubeMars AK80-9 KV100 (classic)

MyActuator RMD-X8-P6-20-C-N (MyActuator) and CubeMars AK80-9 KV100 (classic) (CubeMars) are both listed in actuators & joint modules. The table shows only figures stated in each manufacturer's document; where one document is silent, request the value with your quotation.

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Key differences

Rated speed: AK80-9 KV100 (classic) lists 390 rpm, RMD-X8-P6-20-C-N (V3) lists 190 rpm (2.1× the documented value).
Weight: RMD-X8-P6-20-C-N (V3) lists 0.78 kg, AK80-9 KV100 (classic) lists 0.485 kg (1.6× the documented value).
Peak torque: RMD-X8-P6-20-C-N (V3) lists 20 N·m, AK80-9 KV100 (classic) lists 18 N·m (1.1× the documented value).
Rated torque: RMD-X8-P6-20-C-N (V3) lists 10 N·m, AK80-9 KV100 (classic) lists 9 N·m (1.1× the documented value).
Gear ratio: AK80-9 KV100 (classic) documents 9:1; request this figure for RMD-X8-P6-20-C-N (V3).

Specifications side by side

Values as stated in each manufacturer's cited document.
Specification	MyActuator RMD-X8-P6-20-C-N	CubeMars AK80-9 KV100 (classic)
Peak torque (N·m)	20	18
Rated torque (N·m)	10	9
Gear ratio	Request specification	9:1
Weight (kg)	0.78	0.485
Rated speed (rpm)	190	390
Supply voltage (V)	48	48
Encoder	Request specification	Single magnetic encoder; 14-bit motor-side resolution
Source review	Source review: 2026-10	Source review: 2026-10

Where each model fits

MyActuator RMD-X8-P6-20-C-N

Six-to-one planetary actuator with dual encoders and a 48 V supply. This CAN, no-brake configuration provides 10 N·m rated torque and 20 N·m peak torque; the complete order code separates it from higher-ratio X8 variants.

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CubeMars AK80-9 KV100 (classic)

Compact joint designs already dimensioned around the classic AK80-9 KV100 and its 9:1 planetary transmission.
Projects comparing continuous torque, speed and thermal mounting requirements rather than selecting by peak torque alone.

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