Orbray BMS Brushless Motor Series - BMS10-10

Overview

This document provides detailed technical specifications and mechanical data for the Orbray BMS10-10 brushless motor series equipped with Hall sensors and sleeve bearings.

Electrical Specifications

• Nominal Voltage: 4.0V (BMS10-1003), 6.0V (BMS10-1008)
• No Load Speed: Approximately 33,800 to 40,000 rpm depending on model
• No Load Current: 103 to 185 mA
• Stall Torque: 0.75 to 0.86 mNm
• Stall Current: 630 to 1190 mA
• Output Power: 0.8 to 0.9 W
• Maximum Efficiency: 36% to 37%
• Terminal Resistance: 2.90 to 8.17 Ω
• Rated Torque: 0.15 to 0.17 mNm
• Rated Speed: 27,100 to 30,400 rpm
• Rated Current: 208 to 384 mA
• Friction Torque: 0.15 to 0.16 mNm
• Back-EMF Constant: 0.089 to 0.149 mV/rpm
• Torque Constant: 0.85 to 1.42 mNm/A
• Slope of N-T Curve: Approximately 38,000 rpm/mNm
• Mechanical Time Constant: Around 11 ms
• Rotor Inertia: 0.03 g·cm²
• Maximum Torque: 0.38 to 0.43 mNm

Mechanical Data

• Shaft Radial Play: 0.015 mm
• Shaft Axial Play: 0.23 mm
• Maximum Shaft Radial Load: 0.5 N (measured at 3.9 mm from flange)
• Maximum Shaft Axial Load: 0.15 N
• Maximum Shaft Axial Load at Standstill: 7.8 N
• Operating Temperature Range: -20°C to +80°C
• Maximum Coil Temperature: 90°C
• Weight: 4.5 g

Electrical Connections

The motor includes Hall sensor outputs and motor winding leads with the following connections:

• Motor winding U, V, W
• Hall sensor outputs U, V, W
• Ground (GND)
• Input voltage range: 1.6V to 5.5V (nominal 3.0V)

Additional Notes

• Specifications are subject to change without notice.
• Dimensions are provided in millimeters.
• Refer to pages 63 and 64 for gear, encoder, and driver connection specifications.

Manufacturer Information

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]