Allied Motion's Quantum (QB) series of housed brushless servo motors are designed for use in precision servo applications that require a standard NEMA 17, 23, or 34 frame size motor. The QB034 series are standard NEMA 34 interface motors electromechanically optimized for high output power, high torque density, and low cogging torque. Their high power density ratio allows a smaller size motor to be used in many applications, saving space and weight. Quantum motors are also available as frameless versions for direct machine integration. Features & Benefits Standard NEMA 34 frame size with three stack lengths each covers a wide range of servo applications Rated stall torque from 115 oz-in (0.81 Nm) up to 328 oz-in (2.32 Nm) Standard winding voltage ratings of 24, 40, and 130 VDC High strength NdFeB magnets maximize torque production Integrated Hall sensors for commutation Computer optimized design for maximum power and torque density ensures the most compact and efficient design possible Options Encoder and resolver feedback options for compatibility with virtually all servo drives and motion controllers Sealed versions up to IP65 for operation in harsh environments Custom winding options to provide higher operating ranges of speed and voltage (up to 300 VDC)

Standard NEMA 34 frame size high performance brushless DC servo motor Continuous power rated up to 700 W, and stall torque rated from 0.81 up to 2.32 Nm cont. Standard winding voltages of 24, 40, and 130 VDC

Model No.		QB03400			QB03401			QB03402
Motor Constants
Stall Torque (continuous)	oz-in	115			222			328
	Nm	0.81			1.57			2.32
Demag Torque (±25%)	oz-in	761			1538			2307
	Nm	5.38			10.8			16.2
Motor Constant	oz-in/√W	20.1			34.7			44.7
	Nm/√W	0.142			0.245			0.316
Elect. Time Constant	ms	1.89			2.57			2.78
Mech. Time Constant	ms	2.59			1.74			1.57
Thermal Resistance	°C/W	1.87			1.51			1.15
Viscous Damping	oz-in/RPM	7.3E-4			1.5E-3			2.3E-3
	Nm/RPM	5.1E-6			1.0E-5			1.6E-5
Cogging Torque (max.)	oz-in	3.5			5.0			6.5
	Nm	0.025			0.035			0.046
Mechanical Constants
Motor Inertia	oz-in-s2	7.5E-3			1.5E-2			2.2E-2
	kg-m2	5.3E-5			1.0E-4			1.5E-4
Motor Weight	oz	54.6			78.1			103.3
	kg	1.55			2.24			2.92
Poles	-	6
Winding Constants
Winding	-	A	B	C	A	B	C	A	B	C
Design Voltage	V	24	40	130	24	40	130	24	40	130
Peak Torque	oz-in	708	761	761	1535	1538	1538	2090	2307	2307
	Nm	5.00	5.38	5.38	10.8	10.8	10.8	14.7	16.2	16.2
Peak Current	A	51	49	34	81	65	40	91	81	51
Torque Constant (±10%)	oz-in/A	13.7	15.4	21.8	18.8	23.5	37.6	22.9	28.2	45.0
	Nm/A	0.098	0.109	0.154	0.133	0.166	0.266	0.162	0.200	0.318
No Load Speed	RPM	2367	3499	8037	1722	2286	4665	1413	1913	3802
	rad/s	247	366	841	180	240	488	148	200	408
BEMF Constant (±10%)	V/kRPM	10.1	11.4	16.1	13.9	17.4	27.8	16.9	20.9	33.3
	V/rad/s	0.097	0.109	0.154	0.133	0.166	0.266	0.162	0.200	0.318
Terminal Resistance (±12%)	Ohms	0.46	0.58	1.17	0.29	0.46	1.24	0.26	0.40	1.03
Terminal Inductance (±30%)	mH	0.88	1.11	2.24	0.75	1.18	3.03	0.73	1.11	2.82

Model No.		QB03403
Motor Constants
Stall Torque (continuous)	oz-in	429
	Nm	3.03
Demag Torque (±25%)	oz-in	2961
	Nm	20.9
Motor Constant	oz-in/√W	52.8
	Nm/√W	0.369
Elect. Time Constant	ms	2.37
Mech. Time Constant	ms	1.53
Thermal Resistance	°C/W	0.92
Viscous Damping	oz-in/RPM	3.2E-3
	Nm/RPM	2.2E-5
Cogging Torque (max.)	oz-in	8.0
	Nm	0.056
Mechanical Constants
Motor Inertia	oz-in-s2	3.0E-2
	kg-m2	2.1E-4
Motor Weight	oz	127.3
	kg	3.6
Poles	-	6
Winding Constants
Winding	-	A	B	C
Design Voltage	V	24	40	130
Peak Torque	oz-in	2516	2961	2961
	Nm	17.7	21.1	21.1
Peak Current	A	96	100	74
Torque Constant (±10%)	oz-in/A	26.0	29.4	39.6
	Nm/A	0.184	0.208	0.280
No Load Speed	RPM	1244	1835	4430
	rad/s	130	192	464
BEMF Constant (±10%)	V/kRPM	19.2	21.7	29.3
	V/rad/s	0.184	0.208	0.280
Terminal Resistance (±12%)	Ohms	0.24	0.31	0.56
Terminal Inductance (±30%)	mH	0.59	0.75	1.36

in (mm)

Options
B	=	Holding brake
C	=	Connector
E	=	Encoder
G	=	Gearbox
I	=	IP65 rating (IP44 is std.)
R	=	Resolver
I	=	IP65 protection level
Z	=	RoHS compliant

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Item No.	Description	Type	Size
N/A	Quantum Series Brushless Housed Servo Motor Specifications Brochure	PDF	733 kB
QB03400	Quantum Series Brushless Servo Motor Dimension Drawing	DXF	78 kB
TO-QB202	Technology Overview: Quantum Gen II Brushless Servo Motors	PDF	192 kB