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CRS/CRR17-18

Product catalog summary

Orbray DC Coreless Motor Series for RC and Robotics (CRS/CRR17-18)

Overview

This document provides technical specifications and mechanical data for the Orbray CRS/CRR17-18 series of coreless DC motors designed for remote control (RC) and robotic applications. The motors feature precious metal brushes and sintered sleeve bearings, optimized for high efficiency and performance.

Mechanical Specifications

Dimensions: Maximum diameter 18.1 mm
Shaft axial play: 0.03 to 0.3 mm
Bearing type: Sintered sleeve bearing
Number of commutator segments: 5
Weight: Approximately 22 grams
Operating temperature range: -20°C to +60°C
Note: Reduction gears cannot be attached to this motor model.

Electrical and Performance Specifications

Parameter	Unit	CRS17-1801 (7.4V)	CRR17-1802 (7.4V)
Nominal Voltage	V	7.4	7.4
No Load Speed	rpm	25500	24600
No Load Current	mA	60	51
Stall Torque	mNm	15.08	11.06
Stall Current	A	5.5	3.9
Maximum Output Power	W	10.1	7.1
Maximum Efficiency	%	80.4	78.5
Terminal Resistance	Ω	1.3	1.9
Friction Torque	mNm	0.164	0.145
Back-EMF Constant	mV/rpm	0.288	0.297
Torque Constant	mNm/A	2.75	2.84
Slope of Speed-Torque Curve	rpm/mNm	1687	2221
Mechanical Time Constant	ms	14.3	11.6

Additional Notes

Users are requested to provide corresponding pinion gear specifications or supply the pinion to facilitate sample production.
Specifications are subject to change without prior notice.

Contact 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]

Catalog excerpts

NOWONOOUIN! SSINISNG SMA NHIOAHHW DC CORELESS MOTOR SERIES FOR RC AND ROBOT Precious metal brush, Sleeve bearings Please provide corresponding pinion gear or specify pinion parameters for sample making. 試作寺にはシャフト径に合うピニオンを提供頂くかピニオン請元を事前にお知らせ願います。 5 Stall current 6 Output power 7 Max. efficiency 8 Terminal resistance 9 Friction torque 11 Torque constant 12 Slope of N-T curve 13 Mechanical time constant Specifications 1 Nominal voltage Mechanical data Shaft axial play 14 出力軸遊び ( 軸方向 ) Other spec SLONOOUd WGHdS hich) myHNYd Specifications are subject to change without notice. Orbray Co., Ltd. 3-8-22 Shinden, Adachi-ku, Tokyo 123-8511 Japan

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