AM8021-4BH0-0000
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The AM8021-4BH0-0000 servo motor is designed as a permanent magnet-excited three-phase synchronous motor with a nominal voltage range of 100 to 480 V AC, featuring a standstill torque of 0.50 Nm and a peak torque of 2.68 Nm. Part of the AM Servo Motor Series by Beckhoff, it includes resolver motor feedback and operates effectively with a peak current of 4.90 A.
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Product Description:
The AM8021-4BH0-0000 is a standard three-phase servomotor manufactured and released by Beckhoff under the AM motor series line. Having a flange length of 58 mm and a motor frame length of 111.5 mm, the AM8021-4BH0-0000 excels for compact applications requiring a high-power density servo motor. The AM8021-4BH0-0000 incorporates a radial shaft sealing ring on its drive side, along with a dedicated sealing air connection. The radial shaft sealing prevents intrusion of both foreign particulates and low-pressure liquid jets on the shaft side. The AM8021-4BH0-0000’s plain and smooth shaft offers versatility and convenient load attachment for various load types.
The AM8021-4BH0-0000’s multi-turn encoder incorporates Beckhoff’s one cable technology (OCT), allowing it to measure rotor position and revolution for lesser wiring costs. The AM8021-4BH0-0000 also uses a 24-bit SIL-2 motor encoder that is crucial for very precise applications. Since the AM8021-4BH0-0000 employs no blocking brake, its total mass is just one kilogram. During standstill motor operation, the AM8021-4BH0-0000 outputs an equivalent torque of 0.5 Nm at a current rating of 0.85 A. At most, the AM8021-4BH0-0000 can operate safely at a maximum voltage of 480 V and at a maximum mechanical speed of 12,000 rpm. Aside from its maximum speed and voltage rating, the AM8021-4BH0-0000 can also safely transmit a maximum torque and current of 2.68 Nm and 4.9 A, respectively.
Depending on the supply voltage, the AM8021-4BH0-0000 exhibits different operating parameters. At 480 V, the machine outputs a torque and power of 0.5 Nm and 0.47 kW at a nominal speed of 9000 rpm. As the supply voltage decreases, the machine’s working speed also decreases. For 400 V supply input, the corresponding speed, torque, and power are 8000 rpm, 0.5 Nm, and 0.42 kW, respectively.
Frequently Asked Questions about AM8021-4BH0-0000:
Q: What is the supported voltage supply range for the AM8021-4BH0-0000?
A: The AM8021-4BH0-0000 functions at a wide voltage supply range between 115 and 480 volts.
Q: What are the electrical characteristics of the AM8021-4BH0-0000 when operated at 230 volts?
A: When operated at a 230 volt system, the AM8021-4BH0-0000 transmits 0.5 Nm and 0.21 kW. At this system, the working speed is 4000 rpm.
Q: What is the AM8021-4BH0-0000’s torque and voltage constant?
A: The AM8021-4BH0-0000 has a torque and voltage constant of 0.59 Nm/A and 42 mVmin.
Q: What is the AM8021-4BH0-0000’s thermal time constant?
A: The AM8021-4BH0-0000, which uses natural convection for cooling, has a thermal time constant of 10 mins.
Q: What is the AM8021-4BH0-0000’s rotor moment of inertia?
A: The AM8021-4BH0-0000 has a rotor moment of inertia of 0.14 kg (cm^2).
