R60 KV115 vs R100 KV90

The R60 KV115 draws less current at its rating (9 A against 35 A), and is lighter (248 g against 731 g) and narrower (69 mm against 106.8 mm). The R100 KV90 has more continuous torque (3.7 N·m against 0.75 N·m), more peak torque (11 N·m against 2.3 N·m) and a higher torque constant (0.106 N·m/A against 0.083 N·m/A).

The R60 KV115 is US$200 and the R100 KV90 is US$478. That is US$266.67 per rated N·m for the R60 KV115 and US$129.19 per rated N·m for the R100 KV90.

Which to buy

Every published specification

R60 KV115R100 KV90
Reduction Ratio1:11:1
Rated Torque (N·m)0.753.7
Peak Torque (N·m)2.311
OD (mm)69106.8
Weight (g)248731
Rated Voltage (V)4848
Continuous Torque Max Speed (RPM)41503800
Rated Current (A)935
Peak Current (A)28104
Kv (RPM/V)11590
Kt (N·m/A)0.0830.106
Hall SensorYesYes
Rotor TypeOuter rotorOuter rotor
Driving WayFOCFOC
ApplicationAGV, AMRLegged Robot
Hall Electrical Angle—120±20°

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