QB Series Framless Brushless Motors - Emoteq

Quantum (QB) series of frameless brushless servo motors are specifically designed for direct axis integration in machine applications where a housed motor is undesirable.

The QB series are brushless kit motors (rotor & stator sets) designed to deliver high performance and servo precision at minimal cost. They can be easily customized to the exact specs required, and high speed QS versions are available with improved efficiency at high speeds.

The QB series are 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 housed versions in standard NEMA sizes for use as traditional servo motors in typical servo applications.

Common applications of the frameless QB series include high speed pumps and fans, laboratory automation, cash counter/handling devices, and semiconductor manufacturing.

Features & Benefits

Frameless brushless servo motors designed to be compact and cost-effective
Rated stall torque from 11.5 oz-in (0.08 Nm) up to 10.40 ft-lb (14.10 Nm)
Standard winding voltage ratings of 24, 40, 130, and 300 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

Custom winding options to provide higher operating ranges of speed and voltage (up to 300 VDC)
Alternate rotor through-bore size
Thermistor or other temperature-sensing options

Model No.		QB01700			QB01701			QB01702
Motor Constants
Stall Torque (continuous)	oz-in	11.5			21.6			33.5
	Nm	0.08			0.15			0.23
Demag Torque (±25%)	oz-in	92			169			264
	Nm	0.65			1.19			1.87
Motor Constant	oz-in/√W	3.20			4.99			6.85
	Nm/√W	0.023			0.035			0.048
Elect. Time Constant	ms	0.380			0.520			0.590
Mech. Time Constant	ms	2.030			1.670			1.330
Thermal Resistance	°C/W	4.7			3.29			2.58
Viscous Damping	oz-in/RPM	7.5E-5			1.5E-4			2.3E-4
	Nm/RPM	5.3E-5			1.1E-6			1.6E-6
Cogging Torque (max.)	oz-in	1.0			1.5			1.8
	Nm	7.0E-3			1.1E-2			1.3E-2
Mechanical Constants
Motor Inertia	oz-in-s²	1.4E-4			2.9E-4			4.4E-4
	kg-m²	1.0E-7			2.0E-6			3.1E-6
Motor Weight	oz	2.5			5.0			7.4
	kg	0.07			0.14			0.21
Max Rotor ID	in	0.4720
	mm	12.0
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	92	92	92	163	169	169	219	264	264
	Nm	0.65	0.65	0.65	1.15	1.19	1.19	1.55	1.87	1.87
Peak Current	A	36	24	15	44	35	14	42	41	16
Torque Constant (±10%)	oz-in/A	2.54	3.84	6.04	3.65	4.79	11.35	5.13	6.32	16.20
	Nm/A	0.018	0.027	0.043	0.026	0.034	0.080	0.036	0.045	0.114
No Load Speed	RPM	12775	14068	29095	8874	11287	15488	6318	8555	10851
	rad/s	1337	1473	3046	829	1182	1621	661	895	1136
BEMF Constant (±10%)	V/kRPM	1.88	2.84	4.46	2.70	3.54	8.39	3.79	4.67	11.98
	V/rad/s	0.018	0.027	0.043	0.026	0.034	0.080	0.036	0.045	0.114
Terminal Resistance (±12%)	Ohms	0.63	1.51	3.76	0.530	1.050	6.440	0.56	0.86	5.62
Terminal Inductance (±30%)	mH	0.24	0.55	1.36	0.28	0.48	2.68	0.330	0.5	3.29

Model No.		QB01703
Motor Constants
Stall Torque (continuous)	oz-in	43.5
	Nm	0.30
Demag Torque (±25%)	oz-in	341
	Nm	2.41
Motor Constant	oz-in/√W	8.11
	Nm/√W	0.057
Elect. Time Constant	ms	0.65
Mech. Time Constant	ms	1.26
Thermal Resistance	°C/W	2.14
Viscous Damping	oz-in/RPM	3.1E-4
	Nm/RPM	2.2E-6
Cogging Torque (max.)	oz-in	2.2
	Nm	1.6E-2
Mechanical Constants
Motor Inertia	oz-in-s²	5.8E-4
	kg-m²	4.1E-6
Motor Weight	oz	9.7
	kg	0.27
Max Rotor ID	in	0.4720
	mm	12.0
Poles	-	6
Winding Constants
Winding	-	A	B	C
Design Voltage	V	24	40	130
Peak Torque	oz-in	258	341	341
	Nm	1.82	2.41	2.41
Peak Current	A	42	49	20
Torque Constant (±10%)	oz-in/A	6.21	6.88	16.83
	Nm/A	0.043	0.049	0.119
No Load Speed	RPM	5302	7855	10444
	rad/s	555	822	1093
BEMF Constant (±10%)	V/kRPM	4.52	5.09	12.44
	V/rad/s	0.043	0.049	0.119
Terminal Resistance (±12%)	Ohms	0.56	0.72	4.43
Terminal Inductance (±30%)	mH	0.37	0.47	2.81