Part Number:

AM8551-1E21-0000

Manufacturer: Beckhoff
Series: AM Servo Motor Series
  • Rated 4.4 (21 total ratings)
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The Beckhoff AM8551-1E21-0000 is part of the AM Servo Motor Series, known for its permanent magnet-excited three-phase synchronous motor construction. It features a rated torque of 4.60 Nm, peak torque of 17.2 Nm, and is cooled via convection. The motor operates efficiently at a nominal voltage range of 100 to 480 V AC.

Part Number:

AM8551-1E21-0000

Manufacturer: Beckhoff
Series: AM Servo Motor Series
  • Rated 4.4 (21 total ratings)
  • Straightforward Pricing: No Rush Fees, No Credit Card Fees
    In-Stock, Ships Fast
  • Call for Expedited Shipping and Product Condition Options
Free Ground Shipping
Worldwide Delivery
Repair Options Available

The Beckhoff AM8551-1E21-0000 is part of the AM Servo Motor Series, known for its permanent magnet-excited three-phase synchronous motor construction. It features a rated torque of 4.60 Nm, peak torque of 17.2 Nm, and is cooled via convection. The motor operates efficiently at a nominal voltage range of 100 to 480 V AC.

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Product Description

The AM8551-1E21-0000 is an industrial class three-phase salient pole permanent magnet energetic motor where required performance is repeatable and reliable. Sustaining a huge amount of torque at starting and rated torque of 4.60 Nm, this motor has a standstill torque of 4.80 Nm when powered by an AC electric nominal voltage of 100 to 480 Volts. A rated speed of 2500 min-1 is achieved with a peak motor torque reaching 17.2Nm at 1.20Kw of rated power output. C nominal current at standstill is 2.70A but it has a peak input current of 12.1A with torque constant 1.77Nm/A. The rotor moment of inertia being 8.75 kgcm2 ensures that cases where high precision control has to withstand high and sudden torques are catered for.

This motor is provided with additional advanced feedback tools such as rotor resolver, single turn absolute encoders OCT (One Cable Technology) 18 bits high resolution providing improvement in accuracy position control. It is designed, hence, for incorporation to complex automation system. The motor employs convection cooling and hence can work within highest ambient of 40c and lowest of 50c. M23 speedtec® plug connection technology is applicable in the motor due to its reliability and effectiveness in connection under harsh industrial conditions.

Most importantly, the installation, commissioning, production, troubleshooting, maintenance, and test assemblies must be understood in such a manner that safety is required at all times to avoid injury or damage. The AM8100 series servomotors which include this model does not stand and must be incorporated in a machine or a system. In this regard, it’s important that the machine and additional documentation and safety instructions provided are adhered to after installation.

AM8551-1E21-0000 Technical Specifications

Motor Type: Permanent magnet-excited three-phase synchronous motor
Torque Constant: 1.77 Nm/A
Rotor Moment Of Inertia: 8.75 kgcm²
Motor Feedback: Resolver, single-turn absolute encoder, OCT, 18 bit
Cooling: Convection
Connection Technology: M23 speedtec® plug
Ambient Temperature (operation): +5…+40°C
Nominal Voltage: 100…480 V AC
Standstill Torque: 4.80 Nm
Rated Torque: 4.60 Nm
Peak Torque: 17.2 Nm
Rated Speed: 2500 min^-1
Rated Power: 1.20 kW
Standstill Current: 2.70 A
Peak Current: 12.1 A

Frequently Asked Questions about AM8551-1E21-0000


Q: What type of motor is this?

A: This motor is a permanent magnet-excited three-phase synchronous motor.

Q: What is the nominal voltage range of the motor?

A: The nominal voltage range is 100 to 480 V AC.

Q: What is the standstill torque of the motor?

A: The standstill torque is 4.80 Nm.

Q: What is the rated torque for this motor?

A: The rated torque is 4.60 Nm.

Q: What is the rated speed of the motor?

A: The rated speed is 2500 min⁻¹.

Internal Product Review

  • ‘‘In the three-phase construction with a permanent magnet excitation, the AM8551-1E21-0000 servo motor has a peak torque of 17.2 Nm, and a standstill torque of 4.80 Nm. It operates well within convection cooling at 1.20 kW power output in the Beckhoff AM Servo Motor Series.’’

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