BM Series Brushless Rotary Motors
The BM series consists of Aerotech’s high-performance brushless permanent magnet rotary servomotors, which feature rare-earth magnets for maximum torque and acceleration in a small package. A skewed stator design provides low torque ripple and smooth velocity. Unlike DC brush-type servomotors, the BM series are brushless and maintenance free, making them ideal for critical applications that cannot tolerate downtime.
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Description
Specifications
Dimensions
Ordering Info
Downloads
Description
Description
Specifications
Dimensions
Ordering Info
Downloads
Description
Design Features
- Standard NEMA frame sizes
- Rare-earth magnets maximize performance
- Skewed stator design minimizes torque ripple and cogging for smooth velocity control over a wide speed range
- Optional IP65-level construction allows use in harsh environments
- Optional brake, front shaft seal, and precision gear reducers
- CE approved, follows the EU 2015/863 RoHS 3 directive
Wide Torque Range
The BM motor series covers a wide range of torque and package sizes. Continuous output torque ranges from 0.16 N·m (22.5 oz·in) to 31.6 N·m (280 lb·in), with peak torques to 94.9 N·m (840 lb·in). Standard frame sizes include NEMA 17, 23, 34, 42 and 56. This makes it easy to mount any motor to Aerotech’s gearbox line with no adapter plates. These motors are well-suited to general purpose and high-end servo applications.
Application Flexibility
The standard motor has a 1000-line encoder (4000-line count after quadrature), RS-422 line driver output with Hall effect device outputs for commutation, and MS connectors. Options include increased encoder resolution, sealing for IP65 level protection, brakes, and gearboxes. Standard models can be delivered from stock and custom variations can be engineered to your requirements with minimal lead time.
Need help sizing your motor? Try Aerotech's Motor Sizer software to specify the ideal motor for your application.
Dimensions
NEMA 17 [BM22]
NEMA 23 [BM75, BM130, BM200]
NEMA 34 [BM250, BM500]
NEMA 42 [BM800, BM1400]
Ordering Information
NEMA Brushless Rotary Servomotors
| Option | Description |
| BM22 | NEMA 17 brushless rotary servomotor |
| BM75 | NEMA 23 brushless rotary servomotor |
| BM130 | NEMA 23 brushless rotary servomotor |
| BM200 | NEMA 23 brushless rotary servomotor |
| BM250 | NEMA 34 brushless rotary servomotor |
| BM500 | NEMA 34 brushless rotary servomotor |
| BM800 | NEMA 42 brushless rotary servomotor |
| BM1400 | NEMA 42 brushless rotary servomotor |
Connectors (Required)
| Option | Description |
| -MS | Integral cable w/MS connector for Fbk and Mtr (-MS); not available for BM22 |
| -D25 | Integral cable w/D25 Fbk and 4D Mtr (-D25); only available on BM22, BM75, BM130, and BM200 |
| -D25-9D | Integral cable w/D25 Fbk, 4D Mtr, and 9D Limit (-D25-9D); only available on BM75, BM130, and BM200 |
| -D25-FLB | Integral cable w/D25 Fbk, Fly Leads for Mtr, and 9D Limit (-D25-FLB); only available on BM75, BM130, and BM200 |
| -D25-5DU | Integral cable w/D25 Fbk, 5D Mtr, and 9D Limit (-D25-5DU); only available on BM75, BM130, and BM200 |
| -D25-9D-CMS | Integral cable w/D25 Fbk, 4D Mtr, and 9D Limit - CMS Only (-D25-9D-CMS); only available on BM75, BM130, and BM200 |
| -D25-4TS | Integral cable w/D25 Fbk, 4TS Mtr, and 9D Limit (-D25-4TS); only available on BM75, BM130, and BM200 |
Brake (Optional)
| Option | Description |
| -BK | Holding Brake |
- Brake not available with BM22.
Feedback (Required)
| Option | Description |
| -E1000H | 1000 lines/rev TTL incremental encoder w/Hall tracks (-E1000H); not available for BM22 |
| -E2000H | 2000 lines/rev TTL incremental encoder w/Hall tracks (-E2000H) |
| -E2500H | 2500 lines/rev TTL incremental encoder w/Hall tracks (-E2500H); not available for BM22 |
| -E5000H | 5000 lines/rev TTL incremental encoder w/Hall tracks (-E5000H); not available for BM22 |
| -E1000ASH | 1000 lines/rev 1 Vpp incremental encoder w/Hall tracks (-E1000ASH); not available for BM22 |
Cable Type (Optional)
| Option | Description |
| -HF | High flex cable; only available on BM75, BM130, and BM200 |
Cable Length (dm) (Optional)
| Option | Description |
| -xx | Cable length in decimeters (3.8 dm is default); only available on BM75, BM130, and BM200 |
Shaft Seal (Optional)
| Option | Description |
| -NS | Nitrile front shaft seal; only available on BM250, BM500, BM800 and BM1400 |
Vacuum Preparation (Optional)
| Option | Description |
| -VAC6 | Vacuum preparation to 10-6 Torr |
Accessories (Optional)
| Option | Description |
| MC-HPD25-M | Connector; HPD motor power mate |
| MC-DB25-F | Connector; DB25 motor feedback mate |
| MCM-3 | Connector; MS motor power mate (BM75, BM130, BM200, BM250, BM500, BM800, BM1400) |
| MCF-3 | Connector; MS motor feedback mate |
- Accessories are ordered as separate line items.