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BMN07-12

Product catalog summary

Orbray BMS Brushless Motor Series BMNO7-12

Overview

The document provides detailed technical specifications and mechanical data for the Orbray BMNO7-12 series brushless motors, specifically models BMNO7-1207 and BMNO7-1218. These motors are sensorless and use sleeve bearings. Optional sensored versions are available.

Electrical Specifications

Nominal Voltage: 3.0 V (BMNO7-1207), 5.0 V (BMNO7-1218)
No Load Speed: 21,300 rpm (1207), 22,300 rpm (1218)
No Load Current: 120 mA (1207), 78 mA (1218)
Stall Torque: 0.30 mNm (both models)
Stall Current: 430 mA (1207), 280 mA (1218)
Output Power: 0.2 W (both models)
Maximum Efficiency: 22% (both models)
Terminal Resistance: 6.93 Ω (1207), 18.14 Ω (1218)
Rated Torque: 0.06 mNm (both models)
Rated Speed: 17,100 rpm (1207), 17,900 rpm (1218)
Rated Current: 182 mA (1207), 117 mA (1218)
Friction Torque: 0.12 mNm (both models)
Back-EMF Constant: 0.102 mV/rpm (1207), 0.161 mV/rpm (1218)
Torque Constant: 0.97 mNm/A (1207), 1.54 mNm/A (1218)
Slope of N-T Curve: 70,205 rpm/mNm (1207), 73,297 rpm/mNm (1218)
Mechanical Time Constant: 7.34 ms (1207), 7.66 ms (1218)
Rotor Inertia: 0.01 g·cm² (both models)
Maximum Torque: 0.15 mNm (both models)

Mechanical Data

Shaft Radial Play: Not explicitly specified
Shaft Axial Play: Not explicitly specified
Maximum Shaft Radial Load: 0.27 N measured at 3.7 mm from flange
Maximum Shaft Axial Load: 4.9 N at standstill (sensor attached version)
Operating Temperature Range: -20°C to 80°C
Weight: Approximately 3.8 g

Additional Information

Motors use U, V, W winding configuration.
Electrical connections are via FPC (Flexible Printed Circuit).
Gear, encoder, and driver options are referenced (SPG07, EHM07, ISSD06-R5A, SHSD24-01A), with connection specifications available on page 62 (not included).
Performance graphs illustrate speed and current versus torque for both models, showing expected operational characteristics.
Specifications are subject to change without notice.

Contact and Manufacturer Details

Orbray Co. Ltd.
3-8-22 Shinden, Adachi-ku, Tokyo 123-8511, Japan
Tel: +81-3-5390-7620
Website: https://orbray.com/en/
Email: [email protected], [email protected]

Catalog excerpts

NOLINOCHINI SSINISNE BMS BRUSHLESS MOTOR SERIES BMNO7-12 Sensorless, Sleeve bearing Refer to P.62 for connection spec. 1 Nominal voltage 2 No load speed 3 No load current 4 Stall torque 7 Max efficiency 8 Terminal resistance 16 Mechanical time constant 18 Max torque Mechanical data Shaft radial play indeed CREATED) Shaft axial play bs aie (hc) Max shaft radial load 放電最大共生 ( 径方向 ) Max shaft axial load ahi KA (8H) at standstill 23 Max 出力電shaft 最大axlal 内荷重load(朝方向) Operating temperature i i i Sensored version available as option *measured at ( )mm point from fiange. フランジから ( )mm で計測

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