Notice of Corporate Name Change - 

Adamant Namiki Precision Jewel Co., Ltd. will change its name on Jan. 1, 2023.

A special website is available.

Brushless Motor B4S12-21XXDC Coreless

with Hall sensors Brushless Motor.

B4S12-21XX Specifications

    Brushless Motor B4S12-2108 Brushless Motor B4S12-2109
1 Nomal voltage 12.0 15.0 V
2 No load speed 15320 19300 rpm
3 No load current 55 56 mA
4 Stall torque 11.1 11.6 mNm
5 Stall current 1.59 1.68 mA
6 Output power 4.5 5.9 W
7 Max efficiency 66.3 66.8 %
8 Terminal resistance 7.54 8.94 Ω
9 Rated torque 1.6 1.6 mNm
10 Rated speed 13111 16646 rpm
11 Rated current 277 279 mA
12 Friction torque 0.40 0.40 mNm
13 Back-EMF constant 0.76 0.75 mV/rpm
14 Torque constant 7.22 7.17 mNm/A
15 Slope of N-T curve 1381 1659 rpm/mNm
16 Mechanical time constant 3.5 4.2 ms
17 Rotor inertia 0.23 0.23 gcm2
18 Max torque 3.6 3.6 mNm

Mechanical data

19 Shaft raddial play 0.015 mm
20 Shaft axial play 0.23 mm
21 Max shaft radial load 5(3.4mm*) N
22 Max shaft axial load 1 N
23 Max shaft axial load at standstill 10 N
24 Operating temperature -20~80
25 Max coil temperature 90
26 Weight 18 g

*measured at () mm from flange

Environmental data

#1

Coil U

Motor winding U
#2 Coil V Motor winding V
#3 Coil W Motor winding W
#4 Hall Vcc Input voltage 3∼5V
#5 Hall GND GND
#6 Hall u Hall sensor output U
#7 Hall v Hall sensor output V
#8 Hall w Hall sensor output W

Available only with hall sensor.

B4S12-21XX

Contact



*Click here for detailed inquiries.
*If you cannot find the contact form, please click here.
☎

Mon-Fri 9:00-17:00 JST+81-3-5390-7620

✉

Online Contact

>> Sales Offices