Indramat was a German manufacturer of industrial control equipment founded in 1958. The name Indramat is an abbreviation that comes from the words “INdustrialization, RAtionalization, and autoMATion.” Indramat manufactured and sold servo motor equipment through the Sixties and Seventies, offering AC servo motors as early as 1979. Over the years Indramat was acquired by Rexroth, then Mannesmann, and finally by Bosch in 2001. At that point the company became Bosch Rexroth and the Indramat brand was discontinued though many of the Indramat product lines continued under the Bosch or Rexroth names.
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The MAC designation at the beginning of each MAC series model number refers to “Motor for Analog drives.” The Indramat MAC Series of servo motors offers six different size options each available in three different lengths. Models in the series are capable of max speeds between 1500 RPM and 6000 RPM and continuous stall torques between 0.8 Nm and 57.0 Nm. The MAC series has either a tachometer or a tachometer paired with either an incremental or absolute encoder. Options for a holding break are also available.
The MDD designation at the beginning of each MDD series model number refers to “Motor for Digital drives.” The Indramat MDD Series of servo motors offers nine different size options each available in up to four different lengths with larger sized models have more length options. Models in the series are capable of max speeds between 1500 RPM and 10000 RPM and continuous stall torques between 0.15 Nm and 57.0 Nm. Some models in the MDD series have options for resolver or both resolver and absolute encoder variations. Other models feature digital servo feedbacks that may also pair with absolute encoders. Options for a holding break are also available.
The Indramat MHD Series of servo motors come in eight different sizes and four different lengths. Not all of the length options are available for every size motor in the series. The range of maximum speeds available cover 2000 RPM to 7500 RPM and the available continuous stall torques cover a range from 1.3 Nm to 160 Nm. Models in this series may come with a digital servo feedback paired with an absolute encoder or digital servo feedback alone. Optional holding brakes are also on offer.
The Indramat MKD Series of servo motors are available in five sizes and up to four lengths depending on which size motor you have. With maximum speeds between 3000 RPM and 9000 RPM and continuous stall torques between 0.4 Nm and 48 Nm the MKD Series offers a variety of options in those categories. Models in this series may come with a resolver or a resolver paired with an absolute encoder. Additionally, there are options to add a holding brake.
Sometimes having an Indramat AC servo motor repaired is not the best option.
Extensive motor damage or unacceptable lead times, may make replacement options a more intelligent and economical choice. Servo Repair International provides various replacement options for many Indramat products. The older AC servo motors may be crossed over to newer products from Indramat or other competing manufacturers. We can also provide our own direct replacement AC servo motors as replacements. Many times just a simple feedback device crossover may be needed to increase turnaround time and better performance.