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U38 Series Frameless Torque Motor
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back view of the u6836 series frameless bldc motor

u68 series frameless bldc motors 3d rendering

U68 Series Frameless Rotary MotorsOuter diameter ( OD ) : 68mm

This frameless rotary motors, with a 68mm outer diameter and 37mm aperture, mounts on a 37mm shaft to directly drive robot joints. Available torques: 0.63Nm, 0.86Nm, 1.54Nm, and highly customizable options.

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Specification

Main Parameters		U6818	U6822	U6836
Voltage(VDC)		48	48	48
Rated Output(W)		198	270	484
Rated torque(Nm)		0.63	0.86	1.54
Instant Max Torque(Nm)		1.54	2.14	4
Rated Current(Arms)		4.5	7	13
Instant Max Current(Arms)		13.5	21	40
Rated Speed(rpm)		3000	3000	3000
MaxSpeed(rpm)		6000	6000	5000
Torque Parameter(Nm/Arms)		0.14	0.12	0.12
Rotor inertia 10^-4kg.m²		0.24	0.31	0.52
Back EMF coefficient(Vrims/rad/s)		7	7	9
Resistance(Ω)		1.4	0.5	0.2
Inductance(mH)		1.26	0.46	0.3
Pole-pairs number(2P)		10	10	10
Weight(kg)		0.197	0.266	0.474
Motor height(mm)	L1	11	15.5	28.5
	L2	10	14.5	27.5
	L3	18.3	22.8	36.4

Drawing

Download

U6818 Torque Motor Catalog.pdf
OD: 68mm|Height: 18.3mm
U6822 Torque Motor Catalog.pdf
OD: 68mm|Height: 22.8mm
U6836 Torque Motor Catalog.pdf
OD: 68mm|Height: 36.4mm
U68 Series Frameless Rotary Motors Catalog.pdf
OD: 68mm|Height: 18.3~22.8~36.4mm optional
U6818 Torque Motor 3D Model.stp
OD: 68mm|Height: 18.3mm
U6822 Torque Motor 3D Model.stp
OD: 68mm|Height: 22.8mm
U6836 Torque Motor 3D Model.stp
OD: 68mm|Height: 36.4mm

Application case

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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