The 1326AB-B730E-21 is a three-phase brushless AC permanent magnet synchronous servo motor manufactured by Reliance, also marketed under Allen-Bradley and Rockwell Automation. It belongs to the 1326AB Torque Plus series, featuring high power output and large continuous torque for heavy-duty motion control. Designed with totally enclosed non-ventilated construction and standard IP65 protection, the motor runs steadily with strong resistance to dust and splashing water. This is a discontinued legacy model, and refurbished and surplus units are widely used for industrial equipment maintenance and replacement.

1326AB refers to the series of high-performance AC servo motors. B represents the motor frame size. 730 is the code for power rating and core stack length, standing for 9.6 kW rated power. E indicates the maximum speed grade, which reaches 3500 revolutions per minute at 460 VAC. 21 means the motor adopts standard IEC metric flange mounting and metric keyway shaft structure.

This servo motor operates with three-phase 380 VAC to 460 VAC power supply at 50 Hz and 60 Hz. The rated speed is 3000 revolutions per minute, and the maximum operating speed is 3500 revolutions per minute under 460 VAC input. The rated power is 9.6 kW. The continuous stall torque is 39 N·m, and the peak stall torque is 111 N·m. The rated working current is 22.8 amperes, and the rotor inertia is 0.022 kilogram square meter. It takes brushless resolver as the standard feedback component. The motor winding applies Class F insulation that can withstand up to 155 degrees Celsius. The protection grade is IP65 with totally enclosed non-ventilated aluminum housing. The applicable ambient temperature ranges from 0 degrees Celsius to 40 degrees Celsius. The overall weight of the motor is approximately 62 kilograms.

A junction box on the top is used for connecting three-phase power cables and protective grounding wire. A dedicated connector is equipped for the resolver to transmit position, commutation and speed feedback signals. The mechanical connection part adopts IEC metric flange and keyway shaft to connect with external loads. This motor is fully compatible with Allen-Bradley 1394, Ultra and Kinetix series servo drives. There is no independent external communication port. All control commands and data transmission are realized through the matched servo drive. Every wiring port is designed with anti-interference performance to adapt to complex industrial electromagnetic environments.

It provides high power and large continuous torque to meet the operation demands of heavy load and frequent start and stop. The optimized mechanical structure ensures stable running performance and low vibration. The brushless resolver delivers long-term accurate signal feedback with good vibration and temperature resistance. The IP65 protection and totally enclosed structure effectively block dust and water splashes to protect internal components. The built-in thermal protection device will activate automatically when overheating occurs to prevent winding damage. The internal winding design reduces torque ripple and guarantees smooth operation at low speed.

This motor is suitable for heavy-duty CNC machine tools including lathes, milling machines and grinders. It is widely applied on metal forming equipment such as stamping and bending machines. It also works for high-load automated production lines, material handling systems and packaging machinery. Moreover, it can be used in various production equipment of automobile manufacturing industry. It is an ideal replacement part for renovating and maintaining existing legacy servo systems, and can operate reliably in ordinary factory workshops with dust and slight vibration.

Cut off all power supply before installation. Mount the motor firmly on a rigid base, and reserve sufficient space around the unit for heat dissipation. Connect power cables and feedback cables strictly according to terminal definitions and complete reliable grounding. Use flexible coupling to connect the motor shaft and load to avoid shaft misalignment. Set relevant operating parameters on the supporting servo drive in accordance with motor specifications. After completing all inspections, power on the system, perform jog test to confirm the rotation direction, and then put the motor into formal operation.

Conduct regular inspection every three to six months to check the motor housing, flange, cables and connectors for damage and wear. Disconnect power before cleaning, and wipe the motor body and junction box with dry cloth. Retighten all wiring terminals every year to avoid faults caused by loose connection. Inspect the resolver connector and signal lines regularly to keep feedback signals stable. The motor is fitted with sealed bearings that need no regular lubrication. Replace the bearings timely if abnormal noise or excessive vibration appears. Store spare motors in cool, dry and dust-free environment. Do not disassemble the motor without permission, and all inspection and repair work must be carried out by professional technicians.