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DC Brushless Torque Motors

BMS Series

Browse Rotary Motors

Description

Specifications

Dimensions

Order Information

Motor Model	Units	BMS60	BMS100	BMS280	BMS465
Winding Designation		-A	-A	-A	-A
Performance Specifications^(1,5)
Stall Torque, Continuous⁽²⁾	N-m	0.33	0.56	1.60	2.86
Stall Torque, Continuous⁽²⁾	oz-in	46.2	80.0	227.0	404.8
Peak Torque⁽³⁾	N-m	1.31	2.26	6.41	11.43
Peak Torque⁽³⁾	oz-in	184.9	320.0	908.0	1619.2
Rated Speed	rpm	4,000	3,000	3,000	2,000
Rated Power Output, Continuous	watts	136.7	177.5	503.5	598.5
Electrical Specifications⁽⁵⁾
BEMF Constant (Line-Line, Max)	Volts_pk/k_rpm	17.2	32.6	51.1	70.6
Continuous Current, Stall ⁽²⁾	Amp_pk	2.3	2.1	3.8	4.9
Continuous Current, Stall ⁽²⁾	Amp_rms	1.6	1.5	2.7	3.5
Peak Current, Stall ⁽³⁾	Amp_pk	9.2	8.4	15.2	19.6
Peak Current, Stall ⁽³⁾	Amp_rms	6.5	5.9	10.7	13.9
Torque Constant^(4,8)	N-m/Amp_pk	0.14	0.27	0.42	0.58
	oz-in/Amp_pk	20.1	38.1	59.7	82.6
	N-m/Amp_rms	0.20	0.38	0.60	0.82
	oz-in/Amp_rms	28.4	53.9	84.5	116.8
Motor Constant^(2,4)	N-m/√W	0.050	0.076	0.179	0.280
Motor Constant^(2,4)	oz-in/√W	7.02	10.74	25.34	39.70
Resistance, 25°C (Line-Line)	ohms	8.4	12.9	5.7	4.4
Inductance (Line-Line)	mH	1.30	2.40	1.10	0.87
Maximum Bus Voltage	VDC	340	340	340	340
Thermal Resistance	C/W	1.73	1.35	0.93	0.72
Number of Poles	P	8	8	14	14
Mechanical Specifications
Motor Weight	kg	1.1	1.5	3.60	5.00
Motor Weight	lb	2.4	3.3	7.9	11.0
Rotor Moment of Inertia	kg-m²	1.96x10^-5	3.71x10^-5	4.66x10^-4	9.28x10^-4
Rotor Moment of Inertia	oz-in-s²	0.0028	0.0053	0.0660	0.1314
Max Radial Load	N	89		178
Max Radial Load	lb	20		40
Max Axial Load	N	89
Max Axial Load	lb	20

Notes:
1. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.
2. Values shown @ 75°C rise above a 25°C ambient temperature, with housed motor mounted to a 250 mm x 250 mm x 6 mm aluminum heat sink.
3. Peak torque assumes correct rms current; consult Aerotech.
4. Torque constant and motor constant specified at stall.
5. All performance and electrical specifications ±10%.
6. Maximum winding temperature is 100°C; thermistor trips at 100°C.
7. Ambient operating temperature range 0°C - 25°C. Consult Aerotech for performance in elevated ambient temperatures.
8. All Aerotech amplifiers are rated A_pk; use torque constant in N-m/A_pk when sizing.

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Aerotech is a motion controller and motion control systems manufacturer.