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BMS12-2102/BMS12-2104

DC Brushless Motor BMS Series

With hall sensors,
Sleeve bearing Brushless Motor.

Specifications

  BMS12-2102 BMS12-2104
Rated voltage[V] 7.4 12
No load speed[rpm] 22,800 24,300
No load current[mA] 100 70
Stall torque[mNm] 11.60 12.09
Stall current[mA] 3,941 2,703
Output power[W] 6.9 7.7
Max efficiency[%] 71 70
Terminal resistance[Ω] 1.88 4.44
Rated torque[mNm] 1.59 1.68
Rated speed[rpm] 19,667 20,931
Rated current[mA] 628 435
Friction torque[mNm] 0.30 0.32
Back-EMF constant[mV/rpm] 0.316 0.481
Torque constant[mNm/A] 3.02 4.59
Slope of N-T curve[rpm/mNm] 1,965 2,009
Mechanical time constant[ms] 2.71 2.77
Rotor inertia[gcm2] 0.12 0.12
Max torque[mNm] 3.87 4.03
Inductance[mH] @1kHz 0.046 0.133
Thermal resistance Rth1(coil-housing)[K/W] TBD TBD
Thermal resistance Rth2(housing-ambient)[K/W] TBD TBD
Shaft radial play[mm] 0.05
Shaft axial play[mm] 0.02‐0.2
Max shaft radial load[N] 0.5(3.9mm ※1)
Max shaft axial load[N] 0.15
Max shaft axial load at standstill[N] 7.8
Operating temperature[℃] -20‐+80
Max coil temperature[℃] 90
Weight[g] 13.4

※1 measured at ( )mm point from flange

Electrical connections

BMS12-2102 / BMS12-2104
#1 U Motor winding U
#2 V Motor winding V
#3 W Motor winding W
#4 Vdd Input voltage 3.0V(1.6‐5.5V)
#5 Gnd GND
#6 Hu Hall sensor output U
#7 Hv Hall sensor output V
#8 Hw Hall sensor output W

Specification charts

特性図 BMS12-21

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