R911299110 Bosch Rexroth MSK071E Servo Motor 3000 RPM

R911299110 Bosch Rexroth: High-Torque Servo Motor

The R911299110 corresponds to the type code MSK071E-0300-NN-M1-UG1-NNNN. It is a synchronous servo motor from the powerful IndraDyn S series. The MSK motors are characterized by their high torque density and compact design. This specific model features a frame size of 071 and a length code «E» (High Torque), capable of reaching speeds up to 3000 RPM. It is equipped with an Optical Multiturn Absolute Encoder (M1), which allows for precise positioning without the need for homing procedures after a power cycle, a critical feature for reducing downtime in automated production lines.

Key Technical Characteristics

• Motor Type: MSK Synchronous Servo.
• Size: 071.
• Length: E (High Torque version).
• Winding Code: 0300 (Max speed 3000 1/min).
• Encoder: M1 (Hiperface, Optical, Multiturn Absolute, 128 periods).
• Shaft: Keyed shaft with sealing ring.
• Cooling: Natural convection.
• Holding Brake: None.

Field Engineering Notes

Lifecycle State: Active. Diagnosis: If the drive reports encoder errors (e.g., F2008), check the feedback cable connectivity. The M1 optical encoder is sensitive to shock; do not hammer the shaft during coupling installation. Maintenance: The bearings are greased for life (approx. 20,000 – 30,000 hours). If the motor becomes noisy, bearing replacement is required. Compatibility: This motor is designed to run with IndraDrive controllers. The electronic nameplate in the encoder allows the drive to automatically recognize motor parameters (plug & play), simplifying commissioning via IndraWorks software.

Pro-Tip

Ensure the grounding connection is robust. High-frequency noise from the PWM drive can cause EDM (Electrical Discharge Machining) in the bearings if the motor is not properly bonded to the machine earth.

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