AK10-9 V3.0 KV60 vs AK10-9 V2.0 KV60

The AK10-9 V3.0 KV60 has more peak torque (53 N·m against 48 N·m), is lighter (940 g against 960 g), and turns faster at the output (235 RPM against 109/228 RPM). The AK10-9 V2.0 KV60 has a higher torque constant (0.198 N·m/A against 0.16 N·m/A), and draws less current at its rating (10.6 A against 10.7 A). They match on continuous torque, diameter and depth.

The AK10-9 V3.0 KV60 is US$895 and the AK10-9 V2.0 KV60 is US$895. That is US$49.72 per rated N·m for the AK10-9 V3.0 KV60 and US$49.72 per rated N·m for the AK10-9 V2.0 KV60.

Which to buy

Every published specification

AK10-9 V3.0 KV60AK10-9 V2.0 KV60
Reduction Ratio9:19:1
Rated Torque (N·m)1818
OD (mm)9898
Weight (g)940960
Peak Torque (N·m)5348
Motor Constant Km (N·m/√W)0.320.45
Rated Voltage (V)4824/48
Rated Speed (RPM)235109/228
Rated Current (A)10.710.6
Peak Current (A)31.929.8
Maximum Torque Weight Ratio (N·m/kg)8650
Height (mm)61.761.7
Back Drive (N·m)0.80.8
Kv (RPM/V)6060
Kt (N·m/A)0.160.198
Ke (V/kRPM)16.717.2
Phase to Phase Resistance (mΩ)248195
Phase to Phase Inductance (μH)213181
Inertia (g·cm²)10021002
Mechanical Time Constant (ms)0.50.50
Electrical Time Constant (ms)0.930.93
Pole Pairs2121
Winding TypeStar Backlash (°) 0.33Star Backlash (°) 0.33
Number of Encoder22
Inner Ring Encoder Resolution21bit14bit
Outer Ring Encoder TypeMagnetic EncoderMagnetic Encoder
Outer Ring Encoder Resolution15bit15bit
CAN ConnectorXT30PW(2+2)-MA1257WR-S-4P
UART ConnectorA1257WR-S-3PA1257WR-S-4P
Power ConnectorMagnetic EncoderXT30PW-M
Temperature SensorNTC MF51B 103F3950NTC MF51B 103F3950
Operation Ambient Temperature-20℃~50℃-20℃~50℃
Driving WayFOCFOC
ApplicationLegged Robot, Exoskeleton, AGVLegged Robot, Exoskeleton, AGV
Inner Loop Encoder Type—Magnetic Encoder

Rows the two disagree on are marked; the figures are CubeMars'. To put any other two parts side by side, build your own comparison.