MHD115C-058-PG1-AA Bosch Rexroth Indramat

MPN: R911287222

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The Bosch Rexroth Indramat MHD115C-058-PG1-AA is a servo motor from the MHD Synchronous Motors series, featuring a continuous torque at standstill and holding brake torque of 70.0 Nm. It has a plain shaft with seal, a centering diameter of 180 mm, and uses natural convection for cooling. The motor is equipped with digital servo feedback with an integrated encoder that supports absolute position detection over more than 4096 revolutions.

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Product Description:

The MHD115C-058-PG1-AA is a servo motor produced by Bosch Rexroth Indramat within the MHD Synchronous Motors series. With motor size 115 and length code C, the unit provides closed-loop torque and speed control for automated axes, material-handling stations, and packaging equipment. It converts electrical power into controlled rotary motion and pairs with compatible digital drives for positioning, speed regulation, and repeatable cycle control. Integrated digital servo feedback reports rotor position to the controller, which helps the drive maintain stable response during acceleration, deceleration, and synchronized motion across linked machine axes. The motor is intended for applications that need repeatable motion with continuous feedback instead of open-loop operation.

Mechanical mounting uses a centering diameter of 180 mm, which aligns the stator housing with the adjoining machine frame and helps keep the motor concentric with the driven load. A flange size of 192 mm sets the mounting face dimensions for installation on matching equipment. The motor delivers a continuous standstill torque of 70.0 Nm, allowing it to support demanding loads during low-speed or stationary operation without forced cooling. Cooling is handled by natural convection, and the motor uses a plain shaft for direct coupling without a keyway or spline. This shaft arrangement works well with clamping hubs and other friction-locking connections.

Feedback is provided through absolute (>4096 revolutions) measurement, so the motor can retain position information across multiple turns and does not require homing after shutdown. Electrical power enters through an output connector positioned on side A, which can simplify cable routing in compact machine layouts. The motor also has a shaft seal to help limit lubricant leakage and reduce the entry of contaminants at the shaft exit. Winding code 058 sets the electrical characteristics expected by compatible drives, and an integrated holding brake secures the shaft when power is removed. This brake function is useful on parked or vertical axes that must remain in place after control power is switched off.

Centering diameter
180 mm
Continuous Torque at Standstill
70.0 Nm
Encoder Type
Digital servo feedback w/ integrated encoder
Flange size
192 mm
Holding Brake Torque
70.0 Nm
Housing Cooling Type
Natural convection
Motor Length
C
Motor Size
115
Power Connection Direction
to side A
Power Connection Type
Output Connector
Product Type
Servo Motor
Shaft Design
Plain shaft
Shaft Seal
Yes
Type of Position Detection
Absolute (>4096 revolutions)
Winding Code
058
  • MHD115C058PG1AA
  • MHD115C 058 PG1 AA
  • mhd115c-058-pg1-aa
Fault Code What it means Corrective actions
F218 – Amplifier-heatsink over-temperature DKC/EcoDrive heatsink exceeded its thermal limit and shut the power stage down  Let the drive cool, blow out dust, restore cabinet airflow, replace/repair defective fan or blower
F219 – Motor over-temperature shutdown Internal PTC/NTC in the MHD stator tripped at ≈ 155 °C  Reduce mechanical load, check ambient ≤ 40 °C, verify liquid/air cooling path, inspect temp-sensor wiring
F220 – Bleeder-resistor overload Regenerated energy overheated the braking resistor; drive shut down to protect it  Lengthen decel ramps, add / up-size external bleeder, check resistor wiring and mounting surfaces
F221 – Motor-temperature surveillance defective Open/short in MT+ / MT– monitor circuit or bad sensor  Megger temperature leads, repair cable breaks, replace sensor if resistance is out-of-range
F226 – DC-bus undervoltage Link voltage dropped below minimum; drive aborted motion  Check mains fuses, look for brown-outs, test DC-link capacitors, stabilise supply
F230 – Encoder-1 max-frequency exceeded Motor encoder signal frequency above interface limit (overspeed or noise) Verify speed parameters, check for runaway axis, re-route / replace noisy feedback cable
F234 – Emergency-stop activated +24 V removed at drive-E-Stop input; controlled stop executed Inspect E-Stop chain, reset safety relay, restore 24 V control voltage
F236 – Excessive position-feedback difference Two feedback channels deviate beyond S-0-0391 window  Re-reference axis, tighten couplings, correct encoder resolution and backlash
F242 – Encoder-2 signal too small External sin/cos amplitude < 1 V; data invalid  Replace / re-route cable, improve shielding, verify 5 V/12 V encoder supply
F401 – Double MST SERCOS loss Two consecutive master-sync telegrams missing; drive halted  Clean fibre-optic links, keep total attenuation < 12.5 dB, reseat or swap SERCOS transceivers
Model Continuous torque (Nm) Max rated speed (rpm) Holding brake Feedback class Cooling
MHD115C-058-PG1-AA (baseline) 70 6 000 Yes PG1 — multiturn absolute (> 4096 rev)  Natural convection 
MHD115C-058-PP1-AA 70 6 000  Yes  PP1 — multiturn absolute + parameter memory  Natural convection 
MHD115C-058-NP0-AA 70 6 000 No NP0 — digital relative HSF feedback Natural convection
MHD115C-058-NG1-AA 105 6 000 Yes NG1 — digital relative HSF + brake Natural convection
MHD115B-058-PG0-AA 50 1 500  No  PG0 — multiturn absolute (no brake)  Natural convection 
Error code What it means
F218 Amplifier heat-sink over-temperature shutdown 
F219 Motor over-temperature shutdown (PTC/NTC tripped) 
F220 Bleeder (braking-resistor) overload shutdown 
F221 Motor-temperature surveillance circuit defective (open/short) 
F226 DC-bus undervoltage in the power section 
F230 Encoder 1 signal frequency exceeded (overspeed / noise) 
F234 Emergency-stop activated (+24 V lost at E-Stop input) 
F236 Excessive position-feedback difference between channels 
F242 Encoder 2 failure – signal amplitude too small 
F401 “Double MST” – two missed SERCOS master-sync telegrams 

Frequently Asked Questions about MHD115C-058-PG1-AA:

Q: What is the shaft design of the MHD115C-058-PG1-AA motor?

A: The MHD115C-058-PG1-AA features a plain shaft design for straightforward coupling to loads.

Q: What type of encoder is used in the MHD115C-058-PG1-AA?

A: A digital servo feedback system with an integrated encoder provides position detection for this motor.

Q: What is the continuous torque at standstill of the MHD115C-058-PG1-AA?

A: This motor provides a continuous torque at standstill of 70.0 Nm for demanding applications.

Q: What type of housing cooling is used in the MHD115C-058-PG1-AA motor?

A: Natural convection is utilized to cool the housing of the MHD115C-058-PG1-AA.

Q: Does the MHD115C-058-PG1-AA motor include a shaft seal?

A: A shaft seal is included on the MHD115C-058-PG1-AA for added protection against contaminants.


Internal Product Review

  • ‘‘The MHD115C-058-PG1-AA is a servo motor that stands out in precision motion systems with natural convection cooling. Digital servo feedback with an integrated encoder and absolute position detection beyond 4096 revolutions support excellent feedback quality in demanding axis control. Continuous standstill torque of 70.0 Nm matched with a 70.0 Nm holding brake makes torque retention a clear strength.’’

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