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AM8121-1F20-1001

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The AM8121-1F20-1001 is a compact servo motor with a flange code of F2 (58 mm) and shaft diameter of 9 k6. Manufactured by Beckhoff, part of their AM Servo Motor Series, it has a rated speed of 3000 min^-1 and employs One Cable Technology. It operates under 50 V DC and supports a SIL 3 safety integrity level.

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Product Description

The AM8121-1F20-1001 is small, low voltage servomotor, which has a strong focus on efficient and dynamic industrial uses. This can operate on less than 50V DC and still maintains a standstill torque of up to 1.5 N m at a rated speed of 3000 min-1. Such specifications are required where high precision and high efficiency are mandatory. The unit also features a 19-bit absolute encoder with the OCT (One Cable Technology) allowing power and feedback from the encoder to be sent through a single conductor. This technology does not only simplify wiring of models but also increases reliability of monitoring systems. A motor has a flange code F2 (58 mm) and diameter of shaft 9 k6 20 mm pig tail free end of the shaft, which implies good mechanical integration.

As per the specification sheet, the motor can be used at an ambient temperature of +5 to +40°C where the site altitude does not exceed 1000 m above sea level. Operation is possible in defined power derating above certain altitudes or temperatures. This would also suggest that it is applicable in an environment having relative humidity of up to 90% (non-condensing). They are estimated to have a minimum operational life span of 30,000 operating hours for the ball bearings.

The shaft end, A-side, uses friction-locked clutches or cylindrical shafts to eliminate backlash in terms of the drive connection and also makes provision for a form-locking connection via a feather key groove according to DIN 6885. If the motor is driven through pinions or toothed belts and subject to large radial or directional force this page recommends consulting the technical data or the online calculation tools of Beckhoff to ensure that the urges are within the allowable range.

AM8121-1F20-1001 Technical Specifications

Voltage Range: < 50 V DC
Resolution: 19 bit
Sil (safety Integrity Level): SIL 3-capable
Design: Compact
Cable Technology: One Cable Technology for power and feedback
CE: Approved
Ul : Approved
Standstill Torque: < 1.5 Nm
Feedback System: OCT (One Cable Technology), absolute encoder
Flange Code: F2 (58 mm)
Shaft Diameter: 9 k6
Free Shaft End: 20 mm
Standstill Current: 4.0 A
Rated Speed: 3000 min^-1
Torque: 0.50 Nm

Frequently Asked Questions about AM8121-1F20-1001


Q: What is the voltage range for this motor?

A: The voltage range is less than 50 V DC.

Q: What is the standstill torque of this motor?

A: The standstill torque is less than 1.5 Nm.

Q: What feedback system does this motor use?

A: The motor uses an OCT (One Cable Technology) feedback system with an absolute encoder.

Q: What is the flange code and shaft diameter for this motor?

A: The flange code is F2 (58 mm), and the shaft diameter is 9 k6.

Q: What is the length of the free shaft end?

A: The free shaft end is 20 mm.

Internal Product Review

  • ‘‘The AM8121-1F20-1001’s servo motor is of single cable type power and feedback configuration with a torque output less than 1.5 Nm at standstill. This number comes from the fact that this motor belongs to the range of AM Servo Motors (“Beckhoffs” - email from G. Keller) with the flange code F2 (58 mm) and a maximum speed of 3000 min^-1.’’

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