Description
⚙️ Product Overview
The BALDOR BSM80A-375BA is a brushless AC servo motor designed for industrial motion-control systems requiring accurate positioning, fast response, and controlled torque output. It belongs to the BSM A-Series low-inertia servo motor family and is commonly used with compatible servo drives in automated machinery.
The BSM80A-375BA is rated for a 300 VDC bus system and has a rated speed of 4000 RPM. Its continuous stall torque is 40 lb-in, equivalent to approximately 4.52 Nm, making it suitable for precision machinery and dynamic motion applications.
🔹 Brand: BALDOR
🔹 Model: BSM80A-375BA
🔹 Product Type: Brushless AC Servo Motor
🔹 Series: BSM A-Series
🔹 Motor Design: Low Inertia
🔹 Rated Speed: 4000 RPM
🔧 Key Features
🔹 Brushless AC servo motor design
🔹 BSM A-Series low-inertia construction
🔹 4000 RPM rated operating speed
🔹 300 VDC rated bus voltage
🔹 40 lb-in continuous stall torque
🔹 Approximately 4.52 Nm continuous stall torque
🔹 5.73 A RMS continuous stall current
🔹 21.78 A peak current
🔹 4-pole motor construction
🔹 Low rotor inertia for responsive acceleration and deceleration
🔹 Designed for precision positioning and industrial motion systems
BALDOR BSM servo motors are designed for demanding applications where accurate positioning, responsive torque control, and smooth motion are important.
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | BALDOR-Reliance |
| Model | BSM80A-375BA |
| Series | BSM A-Series |
| Product Name | Brushless AC Servo Motor |
| Product Type | Low-Inertia Servo Motor |
| Motor Technology | Brushless AC |
| Frame Reference | BSM80 |
| Rated Speed | 4000 RPM |
| Rated Bus Voltage | 300 VDC |
| Continuous Stall Torque | 40 lb-in / Approx. 4.52 Nm |
| Peak Torque | Approx. 160 lb-in / 18.08 Nm |
| Continuous Stall Current | 5.73 A RMS |
| Peak Current | 21.78 A RMS |
| Motor Poles | 4 |
| Voltage Constant | 50.2 V |
| Rotor Inertia | 0.00235 lb-in-s² |
| Weight | Approx. 8.5 lb / 3.86 kg |
| Motor Design | Low Inertia |
| Primary Application | Industrial Motion Control |
| Mounting | Machine / Equipment Dependent |
| Country of Origin | Verify Actual Nameplate |
| Product Condition | Verify Actual Unit Condition |
The model-specific specifications above, including speed, bus voltage, torque, current, inertia, pole count, voltage constant, and weight, are listed for the BSM80A-375BA product configuration.
⚡ Operating Function
The BSM80A-375BA operates as part of a closed-loop servo system.
A typical configuration is:
Machine Controller → Servo Drive → BSM80A-375BA Servo Motor → Mechanical Load
The servo drive supplies controlled electrical power to the motor according to commands from the machine controller. Motor feedback allows the system to monitor actual motion and continuously correct the motor output.
This operating principle makes the motor suitable for applications requiring:
- Accurate positioning
- Rapid acceleration
- Controlled speed
- Repeatable movement
- Responsive torque control
- Precise machine synchronization
ABB identifies BSM servo motors as suitable for industrial automation, packaging equipment, CNC and machine systems, material handling, and robotics.
🧰 Installation & Configuration
🔹 Verify the Complete Motor Model
Before replacement, confirm:
- BSM80A-375BA model number
- Complete nameplate information
- Shaft configuration
- Feedback configuration
- Connector type
- Servo drive compatibility
- Mechanical mounting dimensions
- Machine parameter settings
A motor with a similar BSM80 designation should not automatically be treated as a direct replacement.
🔹 Check Servo Drive Compatibility
The replacement motor should be electrically compatible with the installed servo drive.
Check:
- Rated bus voltage
- Continuous current
- Peak current
- Motor feedback type
- Motor winding characteristics
- Speed requirements
- Existing servo-drive parameters
Incorrect motor matching can result in unstable motion, feedback faults, overcurrent alarms, or poor positioning performance.
🔹 Inspect Mechanical Installation
Before startup, inspect:
- Motor mounting bolts
- Shaft coupling
- Gearhead connection
- Alignment
- Mechanical load
- Cable routing
Misalignment can increase bearing load and reduce system performance.
🔹 Follow Controlled Startup Procedures
After installation:
- Verify the motor mounting.
- Check the shaft coupling.
- Inspect motor power connections.
- Check the feedback connection.
- Confirm protective grounding.
- Verify servo-drive parameters.
- Apply power according to the machine procedure.
- Check for alarms.
- Perform low-speed motion testing.
- Confirm normal positioning accuracy.
🔩 Maintenance Recommendations
🌡️ Monitor Operating Temperature
Excessive temperature can affect servo motor insulation and bearing life.
Check the surrounding machine environment for:
- Poor ventilation
- High ambient temperature
- Mechanical overload
- Excessive duty cycle
🔌 Inspect Motor Cables
Check the motor power and feedback cables for:
- Damaged insulation
- Loose connectors
- Oil contamination
- Bent connector pins
- Cable strain
⚙️ Check Mechanical Components
Servo problems may originate from the mechanical system rather than the motor.
Inspect:
- Couplings
- Gearboxes
- Belts
- Ball screws
- Bearings
- Load alignment
🧾 Record Motor Information
For future maintenance, record:
- Complete motor model
- Servo-drive model
- Motor feedback configuration
- Machine application
- Serial number
- Parameter settings
- Previous fault history
❓ Frequently Asked Questions
Q: What is the BALDOR BSM80A-375BA?
A: It is a brushless AC servo motor from the BALDOR-Reliance BSM A-Series, designed for industrial precision motion-control applications.
Q: What is its rated speed?
A: The BSM80A-375BA has a rated speed of 4000 RPM.
Q: What is the rated bus voltage?
A: The listed bus voltage is 300 VDC.
Q: What is the continuous stall torque?
A: The continuous stall torque is 40 lb-in, approximately 4.52 Nm.
Q: What is the continuous stall current?
A: The listed continuous stall current is 5.73 A RMS.
Q: What is the peak current?
A: The listed peak current is 21.78 A RMS.
Q: Can another BSM80 motor replace this model?
A: Not automatically. The complete model number, winding, voltage rating, feedback configuration, shaft design, mechanical mounting, and servo-drive parameters should be matched before replacement.
Q: Can this motor be used with any servo drive?
A: No. The servo drive must be compatible with the motor’s electrical characteristics and feedback system.
🔄 Recommended Related BALDOR Models
- BALDOR BSM80A-375BA — Brushless Servo Motor
- BALDOR BSM80N-375BA — Brushless Servo Motor
- BALDOR BSM80N Series — Brushless AC Servo Motor
- BALDOR BSM90 Series — Brushless AC Servo Motor
- BALDOR BSM100 Series — Brushless AC Servo Motor
- BALDOR BSM50 Series — Compact Servo Motor
- BALDOR BSM63 Series — Brushless Servo Motor
- BALDOR BSM80 B-Series — Brushless Servo Motor
- BALDOR BSM90 B-Series — Brushless Servo Motor
- BALDOR BSM100 B-Series — Brushless Servo Motor
The BALDOR/ABB BSM platform includes different frame sizes and inertia options for applications ranging from fast-cycle automation to larger machine loads. Exact interchangeability should always be confirmed before replacement.
🏭 Application Summary
The BALDOR BSM80A-375BA is a low-inertia brushless AC servo motor designed for industrial systems requiring responsive and repeatable motion.
With a rated speed of 4000 RPM, a 300 VDC bus rating, 40 lb-in continuous stall torque, and 21.78 A RMS peak current, this motor is suitable for precision positioning and high-response automation applications.
Typical applications include material handling, X-Y positioning, textile machinery, packaging equipment, machine tools, and factory automation.
Product Identification: BALDOR BSM80A-375BA
Product Type: Brushless AC Servo Motor
Series: BSM A-Series
Rated Speed: 4000 RPM
Rated Bus Voltage: 300 VDC
Continuous Stall Torque: 40 lb-in / Approx. 4.52 Nm
Application: Industrial Motion Control
Condition: Verify Actual Unit Condition
