ERNTEC

AM3248 Stepper Drives

With its speed and torque, the new AM3248 stepper motor from FAULHABER raises the bar in terms of performance and dimensions. Offering up to 10,000 rpm, it can achieve five times the speed of comparable stepper motors. Combined with a gearhead reduction of 100:1, it supplies a torque of 5 Nm. The motor delivers these values with a diameter of just 32 mm. This makes it ideally suited for a wide range of applications in areas such as aerospace, laboratory automation, large optical systems, the semiconductor industry, robotics and 3D printing.

How it works

The multi-pole, two-phase AM3248 stepper motor performs 48 steps per revolution and offers a very high holding torque of 85mNm. The motor starts with a high speed from the very first step; thanks to its low inertia, it can be used in applications that require very fast acceleration and fast changes of direction. Newly developed large ball bearings further extend the already long service life of this motor type. For its size class, the performance values that it achieves in combination with a 32 GPT gearhead are unrivalled on the market. The motor can also be combined with an IE3 magnetic encoder.

Typical Applications

The AM3248 is suited for a variety of demanding applications that require dynamic operation in limited space.

• Laboratory automation
• Large optoelectronic systems
• Solar panels
• Antennas
• Biological imaging instruments
• Semiconductor
• Automation & Robotics
• 3D printers (high speed)

In the example of aligning the solar panels of satellites, for example. The motors move the booms so that the panels are always directly facing the sun. In addition to working precisely and reliably over many years, the motors must also be able to withstand the extreme temperatures in outer space. In the semiconductor industry, very high dynamics and speed are required when positioning the wafers in very confined installation conditions in the machines. This is another application in which the highest level of precision and reliability are essential.

Advantages

• High torque to volume ratio (thanks to optimized copper volume and tight tolerances)
• Higher dynamic range compared to hybrid technology
• Stepper technology advantages
  • High holding torque: no brake
  • Very good positioning capability in open loop
  • Limited power consumption for low to medium duty cycles