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BMS17-1821

Product catalog summary

Orbray BMS Brushless Motor Series - BMS17-1821

Overview

The BMS17-1821 is a brushless motor equipped with Hall sensors and ball bearings on both the front and back of the shaft to ensure superior durability and mechanical strength. This motor is currently under development, and detailed inquiries are encouraged.

Mechanical Features

Ball bearings applied as standard on both shaft ends for enhanced durability.
Dimensions are provided in millimeters (exact dimensions not specified in the summary).
Maximum shaft radial and axial loads are specified but exact values are not clearly extracted.
Operating temperature range: 0°C to 80°C.
Rotor inertia: 0.64 g·cm².

Electrical Specifications

Parameter	Value	Unit
Nominal Voltage	24.0	V
No Load Speed	20,000	rpm
No Load Current	72	mA
Stall Torque	11.8	mNm
Stall Current	1170	mA
Output Power	6.2	W
Maximum Efficiency	57	%
Terminal Resistance	20.5	Ω
Rated Torque	2.36	mNm
Rated Speed	16,005	rpm
Rated Current	291	mA
Friction Torque	0.77	mNm
Back-EMF Constant	1.13	mV/rpm
Torque Constant	10.75	mNm/A
Slope of N-T Curve	1693	rpm/mNm
Mechanical Time Constant	16.3	ms
Maximum Torque	5.40	mNm

Electrical Connections and Inputs

Motor winding phases: U, V, W.
Input voltage range for Hall sensors: 1.6 V to 5.5 V, nominal 3.0 V.
Ground and Hall sensor outputs for U, V, W phases are provided.

Additional Notes

Gear, encoder, and driver are not applicable or not installed for this motor model.
Specifications are subject to change without notice.
Product is available only with Hall sensors.
Manufacturer contact details: Orbray Co., Ltd., Tokyo, Japan. Website: https://orbray.com/en/

Performance Graph Summary

The motor speed decreases linearly with increasing torque, with a no-load speed of 20,000 rpm and rated speed of approximately 16,000 rpm at rated torque. Current consumption increases with torque, reaching stall current at maximum torque.

Catalog excerpts

NOWINOOUNI SSHNSIHH BMS BRUSHLESS MOTOR SERIES With Hall sensors, ball bearing Ball bearing applied as standard for front and back of the shaft for superior durability. Gear (ギヤや ): Not applicable 6 Output power 7 Max efficiency Terminal resistance Rated torque Rated speed Rated current 30I0HOAHS 1090/28 MOLOW ONOAIE SLONGOUd TEMS: WWH9dlMS we JHNWd 2 No load speed 3 No load current Torque constant Slope of N-T curve Mechanical time constant Rotor inertia Mechanical data Shaft radial play 遇方電遊び ( 径方向 ) Shaft axial play 出力四用び ( 軸方向 ) Max shaft radial load AHRCED A) Max shaft axial load ti aA TEE (8475 FD Max shaft axial load at standstill 1 Heke KERR (TIE) Electrical connections モーター巻線 U Motor winding V =—5—S V Motor winding W 5 BH Input voltage 3.0V 入力電圧 GND グランド Hall sensor output U ャンサー U J *measured at ( )mm point from fiange. フランジから ( )mm で計測 BMS17-1821 25000 Hall sensor output W Available only with hall sensor This product is under development . Please inquire for details. NOLIWHRIOANI ANVHOI Specifications are subject to change without notice.

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