Brushless Rotary Servomotors

BM Series

Browse Rotary Motors

Description

Specifications

Dimensions

Order Information

Motor Model	Units	BM22	BM75	BM130	BM200
Performance Specifications^(1,5)
Stall Torque, Continuous^(2,8)	N-m	0.16	0.55	1.00	1.20
Stall Torque, Continuous^(2,8)	oz-in	22.5	78.3	141.5	170.0
Peak Torque⁽³⁾	N-m	0.48	1.4	2.5	3.0
Peak Torque⁽³⁾	oz-in	68	196	354	425
Rated Speed	rpm	3,000	4,000	4,000	4,000
Rated Power Output, Continuous	watts	50	207	323	460
Electrical Specifications⁽⁵⁾
BEMF Constant (Line-Line, Max)	Volts_pk/krpm	3.9	9	19	18
Continuous Current, Stall^(2,8)	Amp_pk	4.9	10.0	7.5	10.0
Continuous Current, Stall^(2,8)	Amp_rms	3.5	7.1	5.3	7.1
Peak Current, Stall⁽³⁾	Amp_pk	14.7	25.0	18.9	25.0
Peak Current, Stall⁽³⁾	Amp_rms	10.4	17.7	13.3	17.7
Torque Constant^(4,9)	N-m/Amp_pk	0.032	0.06	0.13	0.12
	oz-in/Amp_pk	4.5	7.8	18.8	17.0
	N-m/Amp_rms	0.045	0.08	0.19	0.17
	oz-in/Amp_rms	6.4	11.1	26.5	24.0
Motor Constant^(2,4)	N-m/√W	0.038	0.052	0.088	0.107
Motor Constant^(2,4)	oz-in/√W	5.37	7.33	12.43	15.18
Resistance, 25°C (Line-Line)	ohms	0.67	1.0	2.0	1.1
Inductance (Line-Line)	mH	0.73	0.80	1.80	1.10
Maximum Bus Voltage	VDC	80	340	340	340
Thermal Resistance	C/W	6.26	1.14	1.00	1.04
Number of Poles	P	8	8	8	8
Encoder Options	Quadrature or Amplified Sine
Mechanical Specifications
Motor Weight	kg	0.4	1.1	1.5	2.0
Motor Weight	lb	0.88	2.42	3.30	4.40
Rotor Moment of Inertia	kg-m²	2.00x10^-6	5.20x10^-6	9.20x10^-6	1.30x10^-5
Rotor Moment of Inertia	oz-in-s²	0.00028	0.0007	0.0013	0.0018
Max Radial Load	N	78	89	89	89
Max Radial Load	lb	18	20	20	20
Max Axial Load	N	39	89	89	89
Max Axial Load	lb	9	20	20	20

Note:
1. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.
2. Values shown @ 130°C rise above a 25°C ambient temperature, with 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 155°C.
7. Ambient operating temperature range 0°C - 25°C; consult Aerotech for performance in elevated ambient temperatures.
8. De-rate continuous torque and continuous current by 10% when using an encoder (does not apply to BM22).
9. All Aerotech amplifiers are rated A_pk; use torque constant in N-m/A_pk when sizing.

Motor Model	Units	BM250	BM500
Performance Specifications^(1,5)
Stall Torque, Continuous^(2,8)	N-m	2.0	3.6
Stall Torque, Continuous^(2,8)	oz-in	285	506
Peak Torque⁽³⁾	N-m	5.0	8.9
Peak Torque⁽³⁾	oz-in	712	1,264
Rated Speed	rpm	4,000	4,000
Rated Power Output, Continuous	watts	671	1029
Electrical Specifications⁽⁵⁾
BEMF Constant (Line-Line, Max)	Volts_pk/krpm	28	29
Continuous Current, Stall^(2,8)	Amp_pk	10.5	17.5
Continuous Current, Stall^(2,8)	Amp_rms	7.4	12.4
Peak Current, Stall⁽³⁾	Amp_pk	26.3	43.8
Peak Current, Stall⁽³⁾	Amp_rms	18.6	30.9
Torque Constant^(4,9)	N-m/Amp_pk	0.19	0.20
	oz-in/Amp_pk	27.1	28.9
	N-m/Amp_rms	0.27	0.29
	oz-in/Amp_rms	38.4	40.9
Motor Constant^(2,4)	N-m/√W	0.171	0.270
Motor Constant^(2,4)	oz-in/√W	24.24	38.28
Resistance, 25°C (Line-Line)	ohms	1.1	0.5
Inductance (Line-Line)	mH	1.30	2.80
Maximum Bus Voltage	VDC	340	340
Thermal Resistance	C/W	0.94	0.74
Number of Poles	P	8	8
Encoder Options	Quadrature or Amplified Sine
Mechanical Specifications
Motor Weight	kg	3.6	5.0
Motor Weight	lb	7.92	11.0
Rotor Moment of Inertia	kg-m²	7.85x10^-5	1.39x10^-4
Rotor Moment of Inertia	oz-in-s²	0.0111	0.0197
Max Radial Load	N	178	178
Max Radial Load	lb	40	40
Max Axial Load	N	89	89
Max Axial Load	lb	20	20

Note:
1. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.
2. Values shown @ 130°C rise above a 25°C ambient temperature, with 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 155°C.
7. Ambient operating temperature range 0°C - 25°C; consult Aerotech for performance in elevated ambient temperatures.
8. De-rate continuous torque and continuous current by 10% when using an encoder.
9. All Aerotech amplifiers are rated A_pk; use torque constant in N-m/A_pk when sizing.

Motor Model	Units	BM800	BM1400
Electrical Specifications^(1,5)
Stall Torque, Continuous^(2,8)	N-m	5.6	9.4
Stall Torque, Continuous^(2,8)	oz-in	787	1336
Peak Torque⁽³⁾	N-m	13.9	23.6
Peak Torque⁽³⁾	oz-in	1966	3339
Rated Speed	rpm	3,000	3,000
Rated Power Output, Continuous	watts	1400	2330
Electrical Specifications⁽⁵⁾
BEMF Constant (Line-Line, Max)	Volts_pk/krpm	69	69
Continuous Current, Stall^(2,8)	Amp_pk	10.6	18.0
Continuous Current, Stall^(2,8)	Amp_rms	7.5	12.7
Peak Current, Stall⁽³⁾	Amp_pk	26.5	45.0
Peak Current, Stall⁽³⁾	Amp_rms	18.7	31.8
Torque Constant^(4,9)	N-m/Amp_pk	0.52	0.52
	oz-in/Amp_pk	74.2	74.2
	N-m/Amp_rms	0.74	0.74
	oz-in/Amp_rms	104.9	104.9
Motor Constant^(2,4)	N-m/√W	0.448	0.694
Motor Constant^(2,4)	oz-in/√W	63.44	98.28
Resistance, 25°C (Line-Line)	ohms	1.2	0.5
Inductance (Line-Line)	mH	3.80	1.70
Maximum Bus Voltage	VDC	340	340
Thermal Resistance	C/W	0.85	0.70
Number of Poles	P	8	8
Encoder Options	Quadrature or Amplified Sine
Mechanical Specifications
Motor Weight	kg	6.6	10.7
Motor Weight	lb	14.52	23.54
Rotor Moment of Inertia	kg-m²	3.00x10^-4	5.60x10^-4
Rotor Moment of Inertia	oz-in-s²	0.0425	0.0793
Max Radial Load	N	222	222
Max Radial Load	lb	50	50
Max Axial Load	N	89	89
Max Axial Load	lb	20	20

Note:
1. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.
2. Values shown @ 130°C rise above a 25°C ambient temperature, with motor mounted to a 300 mm x 300 mm x 13 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 155°C.
7. Ambient operating temperature range 0°C - 25°C; consult Aerotech for performance in elevated ambient temperatures.
8. De-rate continuous torque and continuous current by 10% when using an encoder.
9. All Aerotech amplifiers are rated A_pk; use torque constant in N-m/A_pk when sizing.

Motor Model	Units	BM2000	BM3400	BM4500
Performance Specifications^(1,5)
Stall Torque, Continuous⁽²⁾	N-m	14.7	23.7	31.6
Stall Torque, Continuous⁽²⁾	lb-in	130	210	280
Peak Torque⁽³⁾	N-m	44.1	71.2	94.9
Peak Torque⁽³⁾	lb-in	390	630	840
Rated Speed⁽⁶⁾	rpm	2,400	2,400	2,400
Rated Power Output, Continuous	watts	3282	5073	6789
Electrical Specifications⁽⁵⁾
BEMF Constant (Line-Line, Max)	Volts_pk/krpm	99.0	99.0	113.1
Continuous Current, Stall ⁽²⁾	Amp_pk	16.5	26.7	31.1
Continuous Current, Stall ⁽²⁾	Amp_rms	11.7	18.9	22.0
Peak Current, Stall⁽³⁾	Amp_pk	49.7	80.3	93.5
Peak Current, Stall⁽³⁾	Amp_rms	35.1	56.7	66.1
Torque Constant^(4,8)	N-m/Amp_pk	0.89	0.89	1.01
	lb-in/Amp_pk	7.9	7.9	9.0
	N-m/Amp_rms	1.25	1.25	1.43
	lb-in/Amp_rms	11.1	11.1	12.7
Motor Constant^(2,4)	N-m/√W lb-in/√W	1.13 10.0	1.86 16.5	2.31 20.5
Resistance, 25°C (Line-Line)	ohms	0.54	0.20	0.17
Inductance (Line-Line)	mH	3.50	1.60	1.50
Maximum Bus Voltage	VDC	340	340	340
Thermal Resistance	C/W	0.78	0.80	0.69
Number of Poles	P	6	6	6
Encoder Options	Quadrature or Amplified Sine
Mechanical Specifications
Motor Weight	kg	15	23	30
Motor Weight	lb	33.0	49.9	66.9
Rotor Moment of Inertia	kg-m²	1.25x10^-3	2.23x10^-3	3.24x10^-3
Rotor Moment of Inertia	lb-in-s²	0.0111	0.0197	0.0287
Max Radial Load	N	668	668	668
Max Radial Load	lb	150	150	150
Max Axial Load	N	223	223	223
Max Axial Load	lb	50	50	50

Note:
1. Performance is dependent upon heat sink configuration, system cooling conditions, and ambient temperature.
2. Values shown @ 130°C rise above a 25°C ambient temperature, with motor mounted to a 305 mm x 305 mm x 12.7 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 155°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.

Downloads

  PDF File
     CAD Download
      - Instructions
  Manual

Supporting Products

Motion Controllers

| | | | | | | |

Aerotech is a motion controller and motion control systems manufacturer.