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R911289946 (MDD090C-N-020-N2L-110PR1)

MDD Synchronous Motors

Rated 4.5 stars (13 total reviews)
  In-Stock, Ships 3-5 Days
Expedited Lead Times on Select Parts
1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
The R911289946 (MDD090C-N-020-N2L-110PR1) is an AC servo motor designed for automation applications, featuring a holding brake with a torque of 6.5 Nm and digital servo feedback for absolute position detection. It operates at a nominal speed of 2000 min⁻¹ and delivers a continuous stall torque of 10.4 Nm. The maximum theoretical torque is 58.6 Nm at a peak current of 72.9 A. The motor has a torque constant of 0.86 Nm/A at 20°C and a winding inductivity of 6.8 mH. Its construction includes a standard housing, a 110 mm centering diameter, shaft seal, and a keyed shaft. Connection is via a right-angle connector, and the unit supports both natural cooling and optional forced ventilation via a blower. Installation and operation must conform to the provided technical documentation and be performed by qualified personnel.

Technical Specifications

Product Type
Servo Motors

Holding Brake
6.5 Nm

Input Power
AC

Power Connector Location
Right-side

Operating Speed
2000 rpm

Theoretical Maximum Torque
58.6 Nm

Peak Current
72.9 A

Torque Constant (at 20°C)
0.86 Nm/A

Winding Inductivity
6.8 mH

Cooling Method
Natural or Forced with optional blower unit

Balance Class
Standard-R

Position Detection
Digital Servo Feedback

Supplied By
Indramat USA

Why is a holding brake of 6.5 Nm important in the MDD090C‑N‑020‑N2L‑110PR1 motor?

The brake secures the shaft when power is removed, preventing drift and ensuring safety on inclines or with gravity loads. In MDD090C‑N‑020‑N2L‑110PR1 its 6.5 Nm torque is sufficient to hold moderate loads without external braking systems.

What role does the centering diameter of 110 mm play for the MDD090C‑N‑020‑N2L‑110PR1 motor?

This dimension helps align the motor precisely on flanges or mounting plates, reducing misalignment-induced stresses. For MDD090C‑N‑020‑N2L‑110PR1, a 110 mm centering diameter helps ensure coupling repeatability and reduces bearing load.

Why include a shaft seal and keyway in the shaft design of MDD090C‑N‑020‑N2L‑110PR1 motor?

The shaft seal protects bearings and internal components from dust, moisture or particles, extending service life. The keyway ensures positive torque transmission from the shaft to load without slippage during high load or startup for MDD090C‑N‑020‑N2L‑110PR1.

What maintenance factors should be considered due to the keyway shaft when using MDD090C‑N‑020‑N2L‑110PR1?

The keyways can introduce stress risers; periodic inspection of shaft seating and coupling for wear or misalignment is necessary. The key fits correctly and torque transmission interfaces are tight in MDD090C‑N‑020‑N2L‑110PR1 to avoid fretting or fatigue at the shaft‑key interface.

How does the DSF (Digital Servo Feedback) improve motion control?

The DSF system provides high-resolution position and speed feedback, allowing tight loop control with minimal latency. This enhances accuracy during cyclic motions and reduces overshoot or settling times.

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Internal Product Review

The Bosch Rexroth Indramat MDD090C-N-020-N2L-110PR1 synchronous motor features a size 090 frame, length code C, and a shaft with keyway and seal for contamination protection. It is designed for use in packaging, material handling, and CNC machinery, it offers digital servo feedback and operates at a rated speed of 2000 min⁻¹. Its right-oriented connector and 110 mm centering diameter simplify integration into digital drive systems.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MDD090C-N-020-N2L-110PR1.
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