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CMS16-28

Product catalog summary

Orbray DC Coreless Motor Series CMS16-28 Overview

This document provides detailed technical specifications and characteristics of the Orbray CMS16-28 series coreless DC motors, featuring precious metal commutation and sintered sleeve bearings.

1. Motor Specifications

Parameter	Unit	CMS16-2805 (7.4V)	CMS16-2812 (12.0V)	CMS16-2852 (24.0V)
Nominal Voltage	V	7.4	12.0	24.0
No Load Speed	rpm	8900	9200	9600
No Load Current	mA	15	10	5
Stall Torque	mNm	11.05	12.14	10.85
Stall Current	mA	1420	992	465
Output Power (Max)	W	2.6	2.9	2.7
Max Efficiency	%	81	81	80
Terminal Resistance	Ω	5.21	12.10	51.63
Rated Torque	mNm	1.029	1.084	1.019
Rated Speed	rpm	8100	8400	8700
Rated Current	mA	146	97	48
Friction Torque	mNm	0.12	0.12	0.12
Back-EMF Constant	mV/rpm	0.824	1.294	2.471
Torque Constant	mNm/A	7.86	12.36	23.59
Slope of N-T Curve	rpm/mNm	804	756	886
Mechanical Time Constant	ms	5.9	6.0	6.1
Rotor Inertia	g·cm²	0.71	0.75	0.66
Max Torque	mNm	3.68	4.05	3.62

2. Mechanical and Environmental Data

Maximum shaft axial load at standstill: 9.8 N
Bearing type: Sintered sleeve bearing
Dimensions and weights: approximately 27.6 mm length, weight around 0.3 to 0.5 grams (specific values vary by model)

3. Additional Features and Options

Gear options: SPG16 or SSG15
Encoder option: ETD16
Precious metal brushes for commutation
Coreless rotor design for low inertia and high responsiveness

4. Notes and Recommendations

Specifications are subject to change without notice.
Performance data such as torque, speed, and current are nominal and measured under standard test conditions.
Refer to pages 44 and 45 of the original catalog for detailed gear and encoder specifications.

5. 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]

This motor series is designed for applications requiring compact size, high efficiency, and precise control, suitable for robotics, instrumentation, and other precision electromechanical systems.

Catalog excerpts

Precious metal commutation, Sleeve bearing DC CORELESS MOTOR SERIES 2 No load speed 3 No load current 4 Stall torque 15 Slope of N-T curve 16 Mechanical time constant 18 Max torque Specifications are subject to change without notice. E-mail: [email protected] E-mail: [email protected] 3-8-22 Shinden, Adachi-ku, Tokyo 123-8511 Japan

Open the catalog to page 1