Description

Allen-Bradley 1326AB-B420E-21 (1326AB series brushless servo motor)
1326AB-B420E-21 is an inertia AC brushless servo motor in the Rockwell (Allen-Bradley) 1326AB series, with a 460V, 1.1kW, 3000RPM rating. It is compatible with 1394/1397 servo systems and is no longer in production. There are currently second-hand / refurbished spare parts available.

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Key Parameters
Brand/Series: Allen-Bradley
Model: 1326AB-B420E-21
Input Voltage: 380–460VAC, three-phase
Rated Power: 1.1kW (1.5HP)
Rated Speed: 3000 RPM (460V); 2500 RPM (380V)
Continuous Torque: 5.0 Nm (44 lb-in)
Peak Torque: 14.9 Nm (132 lb-in)
Continuous Current: 2.84 A; Peak Current: 6 A
Frame/Faceplate: B420, 108mm diameter faceplate (NEMA/IEC)
Encoder: Standard incremental (optional absolute)
Brake: No brake (optional brake model available)
Cooling: Natural air cooling
Weight: Approximately 6.4 kg
Status: The original factory has stopped production. Second-hand / refurbished products are available.

✅ Key Features
Medium inertia design: Fast response, good rigidity, suitable for high-speed and precise positioning.
Industrial-grade durability: Wide temperature range, shock resistance, strong EMI suppression, suitable for harsh working conditions.
Plug-and-play: Directly compatible with 1394C and 1397 servo drives, simplifying the debugging process.
High-performance cost-effective alternative: The discontinued model can be replaced with 1326AB-B420E-22 or MPL-B4530K.
?? Typical Applications
Machine Tools: CNC machining centers, lathes, milling machines (high speed and high precision)
Packaging / Printing: High-speed rolls, tension control, synchronous cutting
Plastic Machinery: Injection molding machines, extrusion machines, servo drives
Automation Equipment: Robots, gantry machines, multi-axis linkage systems