U25 Series Smallest Frameless Motors
The Mosrac U25 series frameless direct drive motors (robot joint motor) are designed to be directly embedded in your machine, providing the highest pe...
U38 Series Frameless Torque Motor
A frameless motor with a 38mm outer diameter and an 18mm aperture, designed for direct drive of robot joints, provides stable torque and precise speed...
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A frameless torque motor (Frameless torque servo motor) with a 28mm aperture and a 50mm outer diameter directly drives robot joints. Rated torque opti...
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A 60mm OD frameless torque motor can directly drive robot joints with optional rated torque. Highly customizable with various options to meet your spe...

u2515 series frameless brushless torque motor

u2523 series frameless brushless torque motor with hall

u25 series frameless brushless torque motor 3d rendering

U25 Series Smallest Frameless Motors Outer diameter ( OD ) : 25mm

The Mosrac U25 series frameless direct drive motors (robot joint motor) are designed to be directly embedded in your machine, providing the highest performance in the most compact spaces. Contact us today to learn more.

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Specification

Main Parameters		U2510	U2515	U2523
Voltage(VDC)		24	24	24
Rated Output(W)		10.5	21	31.5
Rated torque(Nm)		0.025	0.05	0.075
Instant Max Torque(Nm)		0.08	0.16	0.24
Rated Current(Arms)		2.5	2.50	2.50
Instant Max Current(Arms)		8	8	8
Rated Speed(rpm)		4000	4000	4000
Max Speed(rpm)		6000	6000	6000
Torque Parameter(Nm/Arms)		0.01	0.02	0.03
Rotor inertia10^-4kg.m²		0.003	0.005	0.008
Back EMF coefficient(Vrims/rad/s)		1.6	3.20	4.80
Resistance(Ω)		1.2	2.13	2.60
Inductance(mH)		0.60	1.90	2.30
Pole-pairs number(2P)		7	7	7
Weight(kg)		0.024	0.036	0.052
Motor height(mm)	L1	7.3	11.5	19.5
	L2	6.3	10.5	18.5
	L3	10.8	15.2	23.4

Drawing

Download

U2510 Torque Motor Catalog.pdf
OD: 25mm|Height: 10.8mm
U2515 Torque Motor Catalog.pdf
OD: 25mm|Height: 15.2mm
U2523 Torque Motor Catalog.pdf
OD: 25mm|Height: 23.4mm
U25 Series Smallest Frameless Motors Catalog.pdf
OD: 25mm|Height: 10.8~15.2~23.4mm optional
U2510 Torque Motor 3D Model.stp
OD: 25mm|Height: 10.8mm
U2515 Torque Motor 3D Model.stp
OD: 25mm|Height: 15.2mm
U2523 Torque Motor 3D Model.stp
OD: 25mm|Height: 23.4mm

Application case

Torque motors for robotics applications

Torque motors for consumer electronics application

Torque Motors for industrial automation application

Torque motors for medical devices application

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U38 Series Frameless Torque Mo

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Model	OD(mm)	ID(mm)	Height(mm)	Rated Torque(Nm)	Rated Power(W)	Rated Speed(rpm)
U25 Series	25	11.6	10.8~23.4	0.025~0.075	10.48~31.44	4000
U38 Series	38	18	15.3~34.3	0.1~0.35	31.4~110.0	3000
U50 Series	50	28	19.8~37.9	0.27~0.7	84.89~220.08	3000
U60 Series	60	33	17.7~35.8	0.45~0.96	141.48~301.82	3000
U68 Series	68	37	18.3~36.4	0.63~1.54	198.07~484.18	3000
U76 Series	76	42	18.6~36.7	0.89~2.06	279.82~647.66	3000
U85 Series	85	47	19.3~37.4	1.21~2.69	380.42~845.74	3000
U94 Series	94	51	19.7~37.8	1.58~3.67	496.75~576.92	1500~3000
U115 Series	115	65	26.3~44.4	3~6.1	943.2~958.92	1500~3000
U130 Series	130	84	25.9~60.9	5~18	419.2~754.56	400~800
U160 Series	160	106	25.9~60.9	9~32	471.6~670.72	200~500
U200 Series	200	140	25.9~60.9	13~50	408.72~524	100~300

Mode	OD(mm)	ID(mm)	Height(mm)	Rated Torque(Nm)	Rated Power(W)	Rated Speed(rpm)	Voltage(V)
FI-40 Series	40	6.5	48~65	0.25	7.9	300	220
FI-60 Series	60	15	60~80	0.5	15.7	300	220
FE-80 Series	80	15	47~67	1	21	200	220
FI-80 Series	80	12	50	0.9	28.3	300	220
FE-112 Series	112	19	65~95	3	62.9	200	220
FI-120 Series	120	42	64	2.4	37.7	150	220
FE-140 Series	140	30	50~80	6	188.6	300	220
FI-140 Series	140	28	85~188	10.5	220.1	200	220
FE-170 Series	170	42	50~155	4.5	117.9	250	220
FI-170 Series	170	50	50~100	5.4	141.5	250	220
FI-180 Series	180	50	55~125	14	220.1	150	220
FI-220 Series	220	30	123~208	50.6	530.3	100	220
FE-224 Series	224	50	42~62	14.1	295.5	200	220
FI-224 Series	224	50	42	9.9	155.6	150	220
FE-263 Series	263	88	113~188	95	796.5	80	220
FI-280 Series	280	60	95~145	45	565.9	120	220
FI-300 Series	300	150	75	35	330.1	90	220
FI-375 Series	375	88	150~200	200	1257.6	60	220

Series	Types	RotorID	StatorOD	Stator installation pitch circle	Stator shieldOD	Overall thickness
10	Standard Compact	8/10 8/10	36 27	25 23	20	7
15	Standard Compact	12/13/15 12/13/15	40 32	30 28	25	7
20	Standard Standard Compact	6/8/10 15/18/20 18/20	45 45 37	36 36 33	30	7
25	Standard Compact	23/25	50 42	40 38	35	7
30	Standard Compact	28/30	55 47	45 43	40	7
35	Standard Compact	33/35	60 52	50 48	45	7
40	Standard Compact	38/40	65 57	55 53	50	7
45	Standard Compact	43/45	70 62	60 58	55	7
50	Standard Compact	48/50	75 67	65 63	60	7
55	Standard Compact	53/55	80 72	70 68	65	7

Series	Model	Inner rotorThread	Inner rotorMatch ID (H7)	Outer rotor Thread	Outer rotorMatch ID (H7)	StatorMatch ID (H7)
10-15-25	T-10-15-25	M10x0.4mm	9	M15x0.4mm	14	25
15-20-30	T-15-20-30	M15x0.4mm	14	M20x0.4mm	19	30
20-25-35	T-20-25-35	M20x0.4mm	19	M25x0.4mm	24	35
25-30-40	T-25-30-40	M25x0.4mm	24	M30x0.4mm	29	40
30-35-45	T-30-35-45	M30x0.4mm	29	M35x0.4mm	34	45