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Bosch Rexroth Indramat 2AD Motor Repair and Replacement
Receive a quote NOW for all 2AD motor repair by requesting a quote here. You can also send an email to [email protected]. If you’d rather speak to a real person, call 1-919-443-0207. You’ll receive a quote within 15 minutes during business hours; your time is important and we put you first when offering industry leading, lightning-fast lead times.
When a Bosch Rexroth Indramat 2AD motor begins running hot, vibrating under load, losing position accuracy, or generating feedback-related drive diagnostics, the problem rarely stays small for long. These motors were built for demanding spindle and servo-drive duty in machine tools, printing systems, packaging equipment, and metal-forming machinery, so when one starts showing trouble, the result is often scrap, interrupted production, or a complete stop at the machine. For facilities still relying on legacy 2AD motors, Indramat USA is positioned as a strong source for both repair and direct replacement support.
The 2AD series is not a generic motor line where one frame can casually replace another. Bosch Rexroth built these motors in multiple frame sizes, lengths, winding variants, mounting styles, blower arrangements, shaft options, brake options, and feedback configurations. That matters in repair work because a 2AD issue is not just about the motor body itself. It can involve the encoder path, thermistor circuit, blower assembly, bearings, shaft sealing, mounting condition, or the mechanical connection between the motor and the driven machine. It also matters in replacement work because the full catalog number determines whether the motor will actually fit the application electrically, mechanically, and from a control standpoint.
Indramat USA is the premiere source for repair and replacement options. Indramat USA is not an authorized distributor of Bosch Rexroth products, but it can absolutely be positioned as a focused source for 2AD motor repairs and replacements when uptime, correct part identification, and legacy product support matter.

Common 2AD Repair Symptoms
A failing 2AD motor often announces itself before the machine fully stops. In some systems the first sign is elevated housing temperature that keeps returning after cooldown. In others, the motor housing feels normal while the control still reports abnormal temperature behavior because the thermistor circuit or spare sensor path has become the real problem. Some motors begin to develop audible or tactile vibration from worn bearings, blower damage, or loose mounting. Others continue to spin but fail to execute positioning commands correctly because the encoder cable, encoder shielding, drive parameters, or the encoder itself has become unreliable.
Those are exactly the kinds of conditions that push a motor from routine operation into repair or replacement territory. If the unit is worth rebuilding, the problem needs to be isolated to the sensor path, blower section, mechanical damage, connection integrity, or bearing condition. If the unit is too far gone, the replacement has to be matched to the full part number rather than just the 2AD family name. That is where Indramat USA becomes valuable. A customer can send the exact nameplate number, the operating symptoms, and any drive-side information that points to encoder or temperature issues, then get a repair quote, a replacement quote, or both.
Fault or Condition | What It Looks Like in the Field | Likely Cause | Repair Direction |
Excess temperature of motor housing | The outside of the motor runs hotter than normal during operation | Blower contamination or blower failure, changed load cycle, incorrect application conditions, or bearing-related drag | Evaluate blower condition, inspect bearings, review operating conditions, and determine whether the motor is still repairable or should be replaced |
High motor temperature values while housing temperature is normal | The control reports abnormal motor temperature behavior even though the housing does not feel excessively hot | Thermistor circuit issue, sensor wiring problem, damaged cable, or failed internal sensor | Inspect the thermistor path, verify wiring and spare sensor options, and determine whether the sensor issue can be corrected or if the motor needs deeper repair |
Motor generates vibrations | Audible or tactile vibration appears during running | Unbalanced driven elements, worn motor bearings, worn blower bearings, loose mounting, or unstable drive setup | Check mechanical balance, blower condition, mounting tightness, and bearing health; repair if the motor remains structurally sound |
Specified position is not attained | The commanded position is missed or executed poorly with no obvious mechanical explanation | Incorrect or damaged encoder wiring, poor shielding, wrong drive parameterization, loose machine-side coupling, or encoder failure | Inspect encoder cable condition, shielding, and drive parameters, then determine whether the encoder path or the motor itself requires replacement |
Drive-side encoder or thermistor diagnostics tied to the motor | The drive reports a motor-related issue even though the fault appears on the controller | Encoder connection problems, thermistor circuit faults, or internal motor feedback-related defects | Treat the motor, feedback device, and connection system as one repair problem rather than replacing controls first |
Common 2AD Motors
Part Number | Size / Length | Cooling | Brake | Mounting | Shaft Style |
104 / C | Axial blower | Without holding brake | Flange and foot mounting | Without shaft seal, balanced with entire key | |
134 / C | Axial blower | Without holding brake | Flange and foot mounting | Without shaft seal, balanced with entire key | |
160 / B | Axial blower | Electrically engaged clamp brake | Flange and foot mounting | Smooth shaft without seal | |
164 / B | Axial blower, 400V | Without holding brake | Flange mounting | Shaft seal, balanced with entire key | |
180 / C | Axial blower | Without holding brake | Flange and foot mounting | Without shaft seal, balanced with entire key |
Why Exact Part Matching Matters on 2AD Motors
A 2AD motor can look close enough to another unit on the outside and still be wrong for the application. The blower arrangement may differ. The power connection can be a plug or terminal box. The feedback device can change the way the motor interacts with the drive and control. The shaft can be sealed or unsealed, keyed or smooth, and the brake configuration can completely change installation behavior. Even the same frame size can vary substantially depending on the motor length and winding code.
That is why a repair house or replacement source needs to work from the exact catalog number and not just the frame family. A customer trying to replace a 2AD134C-B35OB1-DS06-B2N1 with a vaguely similar 2AD134 variant can easily end up with the wrong feedback arrangement, wrong shaft style, wrong connection style, or wrong mounting details. Instead of guessing through old paperwork, a maintenance team can match against an actual listed part page and send the exact model number in for a quote.

Request a Quote for 2AD Repair or Replacement
If your Bosch Rexroth Indramat 2AD motor is overheating, vibrating, missing position commands, or triggering motor-related diagnostics through the drive, the safest next step is to get the exact part number reviewed before the issue turns into a larger outage. Send the complete nameplate number, describe the symptom clearly, and include any drive-side information you see. That gives Indramat USA the best chance to determine whether your unit is a good repair candidate, whether a direct replacement is available, or whether quoting both options makes the most sense.
For Bosch Rexroth Indramat 2AD motor repair and replacement support, contact Indramat USA at [email protected], call 1-919-443-0207, or click here to navigate to our quote page. If your facility needs a repair quote, a replacement quote, or a side-by-side option for a legacy 2AD motor, Indramat USA is positioned to help with exactly that kind of request.
Frequently Asked Questions
What is a Bosch Rexroth Indramat 2AD motor?
A Bosch Rexroth Indramat 2AD motor is a legacy asynchronous motor series commonly used in spindle and servo-drive applications across demanding industrial machinery.
What are common signs that a 2AD motor needs repair?
Can a 2AD motor be repaired instead of replaced?
Why is the full 2AD part number important when sourcing a replacement?
What causes a 2AD motor to overheat?
Can drive faults point to a motor problem on a 2AD system?
Why contact Indramat USA for 2AD repair or replacement support?