Allied Motion's CL66 series of 66 mm dia., 25 W coreless DC motors provides maximized performance through the use of high performance permanent magnets and a uniquely wound and formed coreless rotor. CL motors are efficient, having zero iron loss, and being coreless, they have no preferred rotor position (cog-free), minimal torque ripple, and low rotor inertia. CL66 series motors are ideal for medical devices, small pumps, door opening, and automated test and instrumentation equipment among other applications. Features & Benefits Coreless rotor design for smooth, cog-free operation High-strength magnets for maximized performance Coreless design means no iron loss and higher efficiency compared to iron-core motors Low inertia rotor for rapid response Carbon brush commutation for long life Options Spur or planetary gearhead with ratios up to 900:1 Incremental or absolute encoder Integrated tachometer Custom winding for alternate voltages Custom lead and connector configurations Alternate shaft configurations

High performance 66 mm DC coreless motors Power rating of 25 W, and voltage ratings from 12 to 36 VDC Optimized performance from coreless winding and high strength magnets

Model	9904 120 +	13601	13602	13603	13604	13605	13606
Bearing System		Ball Bearing
Commutation System		Graphite / Copper
Max, Radial Shaft Load (10 mm (0.39") from front mount)	N (oz)	100 360
Max.Axial Shaft Load	N (oz)	15 54
Ambient Temp.-Operating	°C	-10 to 60
Ambient Temp.-Storage	°C	-40 to 70
Mass (Weight)	g (oz)	900 (31.7)
Nominal Voltage	V	12	15	18	24	30	36
Nominal Torque	mNm (oz-in)	100 (14.2)
Nominal Speed	RPM	1800	2090	2200	2170	2280	2540
Nominal Current	mA	2330	2060	1750	1300	1080	980
No-Load Speed	RPM	2560	2830	2890	2850	2960	3210
No-Load Current	mA	81	77	66	49	41	40
BEMF at 3000 RPM	V	13.9	15.7	18.5	25	30.1	33.3
Torque Constant	mNm/A (oz-in/A)	44.2 (6.26)	50 (7.1)	59 (8.36)	79.6 (11.3)	95.8 (13.6)	106 (15)
Terminal Resistance	Ohm	1.6	2	2.5	4.6	6.6	8
Starting Torque at Nom. Voltage	mNm (oz-in)	335 (47.5)	384 (54.4)	418 (59.2)		436 (61.8)	477 (67.6)
Starting Current at Nom. Voltage	A	7.6	7.7	7.1	5.3	4.6	4.5
Rotor Inductance	mH	0.59	0.75	1.04	1.9	2.75	3.37
Rotor Inertia	kgm² (oz-in-s²)	21E-6 (2.97E-3)
Mech. Time Constant	ms	17	16	15
Thermal Resistance Winding-Housing	°C/W	2.9
Thermal Resistance Housing-Ambient	°C/W	5
Compatible Gearboxes (option)		P52A, S64A

CL 66 25 Watt Coreless DC Motor

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Model	Type	Diameter mm (in)	Torque Nm (lb-in)	Ratio
P52A	Planetary	52 (2.05)	25 (221)	4:1 - 308:1
S64A	Spur	64 x 64 (2.25 x 2.52)	3 (26.5)	5:1 - 250:1

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Item No.	Description	Type	Size
N/A	CL Series Coreless DC Motor Specifications Brochure	PDF	753 kB
CL66 25 Watt	CL66 Coreless DC Motor Dimensions Drawing	DXF	76 kB
TO-CL03	Technology Overview: DynaMax Coreless DC Motors	PDF	162 kB
P52A	P52A Planetary Gearbox Specifications	PDF	60 kB
S64A	S64A Spur Gearbox Specifications	PDF	52 kB