R911257320 (MDD065A-N-040-N2M-095GA0)

Name: R911257320 (MDD065A-N-040-N2M-095GA0)
Brand: Indramat Motors
SKU: MDD065A-N-040-N2M-095GA0
Price: 950.00 USD
Availability: InStock
Rating: 4.8 (13 reviews)

MDD Synchronous Motors

Rated 4.8 stars (13 total reviews)

In-Stock, Ships 3-5 Days

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The Bosch Rexroth R911257320 (MDD065A-N-040-N2M-095GA0) is a digital AC servomotor featuring a size 065 frame and a 95 mm centering diameter. Designed for use with digital drive controllers, it supports a nominal speed of 4000 min⁻¹ and delivers 0.8 Nm continuous torque at standstill. The motor includes an integrated multiturn absolute encoder for precise feedback and employs a digital servo feedback system. The construction incorporates a standard housing with an IP65 rating, a plain shaft with a shaft seal, and side A connector orientation. Surface cooling is provided for handling higher load demands, while a temperature sensor within the windings protects against thermal overload. Only the shaft is balanced to standard specifications; mounted components are not included. The motor is not compatible with Design B14 mounting and is delivered without a blocking brake.

Technical Specifications

Protection Rating
IP 65

Sensor
Integrated temperature sensor

Size Code
065

Maximum Operating Temperature Plus Installation Elevation
Should not exceed limits

Protection Degree With Blower Fitted
IP 44

Deliverability
Worldwide

Shaft Shift Due To Thermal Deformations
0.6mm

Cooling
Radial-type surface cooling

Coating
Black prime (prone to peeling)

Balance Class
Applies to only the moto

Frequently Asked Questions

How does the plain shaft with shaft seal affect coupling to other equipment?

The shaft seal protects against ingress of dirt and fluids, so mating components need to respect sealing surfaces and tolerances. Also, alignment precision matters more since there is no keyway to absorb minor misalignments.

In what situations would the lack of a blocking brake be problematic?

Without a holding brake, the motor cannot resist load torque when unpowered, which is risky in vertical or inclined loads. An external brake or mechanical lock would be required for safe holding in such applications.

How does the 95 mm centering diameter influence mounting precision?

It enforces exact centering on the mounting hub or flange, minimizing radial run-out and vibration under high speed. Poor matching leads to imbalance and shortened bearing life.

How does the digital servo feedback (DSF) shape control loop design?

DSF provides fast, precise digital feedback, allowing high bandwidth control and tighter error tolerances. Controllers must be compatible with the feedback format and ensure low latency to make full use of it.

How important is inertia matching for this motor’s application?

Matching the motor’s inertia to the load inertia (aiming for ratios like 1:1 to ~10:1) reduces overshoot and improves dynamic response. If the load inertia is far higher, acceleration will suffer and stability in motion control degrades.

Common Misspellings

MDD-065A-N-040-N2M-095GA0

MDD065A N 040 N2M 095GA0

MDD065A-N-040-N2M-095-GA0

MDD065A-N-040-N2M-095-GAO

MDD065A-N-040-N2M-095GAO

MDD065AN040N2M095GA0

MDD65A-N-040-N2M-095GA0

MDDO65A-N-040-N2M-095GA0

MDDO65A-N-O4O-N2M-O95GAO

mdd065a-n-040-n2m-095ga0

Internal Product Review

The Bosch Rexroth Indramat MDD065A-N-040-N2M-095GA0 is a servo motor that delivers 0.8 Nm continuous torque at standstill. It features plain shaft with shaft seal, and an integrated multiturn absolute encoder for DSF feedback. It fits well in robotics, packaging machines, printing presses, and CNC tool-drives.