MKD071B-035-KG0-KN

MPN: R911272414

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The MKD071B-035-KG0-KN synchronous motor features a peak current of 28.3 A and a voltage constant of 125 V/1000rpm. Its rotor inertia of 8.7 x 10-4 kgm^2 enables smooth, responsive operation.

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Product Description:

The MKD071B-035-KG0-KN is a synchronous motor designed for high performance industrial applications. This model is designed and manufactured by Bosch Rexroth. It offers reliability, precision and efficiency. This motor is well suited for tasks requiring dynamic motion and accurate positioning.

The MKD71 series synchronous motor features a rated speed of 2500 rpm and a rated torque of 5.2 Nm (natural cooling 60 K) or 7.5 Nm (natural cooling 100 K). It operates with a rated power of 1.6 kW (60 K) or 2.5 kW (100 K) and the rated current is 2.9 A for 60 K cooling and 4.4 A for 100 K cooling. The peak current of the motor reaches 28.3 A with a continuous torque at a standstill of 8.0 Nm (60 K) or 9.0 Nm (100 K). Its voltage constant is 125 V/1000rpm and the winding resistance at 20 degrees C is 4.57 Ohm. It features a maximum speed of 4500 rpm and the rotor inertia is 8.7 x 10^-4 kgm^2. The protection class of the motor is rated at IP65 that makes it suitable for environments with dust and water exposure.

The MKD071B-035-KG0-KN synchronous motor incorporates resolver feedback with an integrated multiturn absolute encoder for precise positioning. The motor's maximum permissible ambient temperature is between 0 and 40 degrees C and it can handle transportation and storage temperatures between - 20 and + 80 degrees C. Its thermal time constant is 45 minutes. The thermal time constant is the time taken by the motor to cool itself down after an operation. This motor is designed to meet insulation standards according to DIN VDE 0530 Part 1 and comes with a robust housing coat compliant with RAL 9005 standards.

Characteristic Motor Speed
2500 rpm
Continous Current at Standstill (60K)
6.3 A
Continous Torque at Standstill (60K)
8 Nm
Maximum Speed
4500 rpm
Motor Mass
8.8 kg
Rotor Moment of Inertia
8.7 x 10-4 kgm2
Theoretical Maximum Torque
32 Nm
Voltage Constant
125 V/1000min-1
Winding Inductivity
23 mH
Winding Resistance
4.57 ohms
  • MKD071B035KG0KN
  • MKD071B 035 KG0 KN
  • mkd071b-035-kg0-kn
  • MKD71B-035-KG0-KN
Fault/Error Description Corrective Action
Motor Does Not Start No response from motor at power-up Check drive enable signal and motor power connections
Erratic Motor Movement Unstable or inconsistent motor rotation Inspect encoder feedback cable and shielding for interference
Overtemperature Fault Motor temperature exceeds safe level Verify cooling conditions and reduce duty cycle if necessary
Motor Stalls Stops or hesitates during movement Check for mechanical jamming or overload; verify load inertia
Excessive Vibration Unusual noise or motion during operation Check motor mounting and shaft alignment
Encoder Error Drive reports feedback error Inspect encoder cable and connections; replace encoder if needed
Regenerative Overvoltage DC bus voltage too high during deceleration Adjust deceleration ramp or add braking resistor
Drive Does Not Recognize Motor Motor parameters not detected Check motor ID and wiring to the drive
Continuous Overcurrent Drive trips on overcurrent repeatedly Check motor load, wiring short circuits, or parameter mismatch
Abnormal Noise Grinding or whining from motor Check bearing condition and verify proper commutation
Part Number Continuous Torque (Nm) Max Speed (rpm) Motor Mass (kg) Voltage Constant / Nominal Voltage
MKD071B-035-KG0-KN 8 4500 8.8 125 V/1000 rpm
MKD071B-035-GP0-KN 8 3000 13.5 53.8 V/1000 rpm
MKD071B-061-KG0-KN 8 4500 n/a 70 V/1000 rpm
MKD071B-024-GP0-KN 8 6000 13.9 Nom. 400 V
MKD071B-061-KG1-KN 8 6000 8.8 n/a
MKD071B-035-GG1-KN 8 3500 15.7 n/a
Error Code Description
F200 Overtemperature motor
F218 Encoder signal error
F219 Incorrect encoder type or cable fault
F210 Motor blocked or jammed
F213 Overload detected
F228 Motor phase fault
F220 Overvoltage in DC bus
F233 Incorrect motor parameter set
F255 No commutation signal detected
F203 Contactor control fault

Frequently Asked Questions about MKD071B-035-KG0-KN:

Q: What is the rated power of the MKD071B-035-KG0-KN motor?

A: The MKD071B-035-KG0-KN motor operates with a rated power of 1.6 kW at 60 K cooling. It delivers up to 2.5 kW at 100 K cooling for demanding tasks.

Q: What type of feedback system does the MKD071B-035-KG0-KN motor use?

A: This motor integrates resolver feedback with a multiturn absolute encoder. This ensures precise positioning for high-performance applications requiring dynamic motion and accuracy.

Q: What is the maximum speed of the MKD071B-035-KG0-KN motor?

A: The MKD071B-035-KG0-KN synchronous motor can reach a maximum speed of 4500 rpm. This makes it ideal for applications demanding high-speed operation and precision.

Q: What are the environmental temperature limits for the MKD071B-035-KG0-KN motor?

A: The motor operates in ambient temperatures ranging from 0 to 40 degrees C. It can withstand storage and transportation temperatures from -20 degrees C to +80 degrees C, ensuring durability in various conditions.

Q: What is the protection class of the MKD071B-035-KG0-KN motor?

A: This motor is rated with IP65 protection. It is suitable for environments with exposure to dust and water, ensuring reliable operation in harsh industrial settings.


Internal Product Review

  • ‘‘The synchronous motor MKD071B-035-KG0-KN by Bosch Rexroth stands out for its rated speed of 2500 rpm, multiturn absolute encoder, and 7.5 Nm torque under natural cooling. Its IP65-rated protection and DIN VDE 0530 compliance make it an excellent choice for precision-heavy, rugged industrial applications.’’

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