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R911251296 (MDD065A-N-040-N2M-095GB1)

MDD Synchronous Motors

Rated 4.4 stars (4 total reviews)
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1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
The R911251296 (MDD065A-N-040-N2M-095GB1) is a Bosch Rexroth digital AC servomotor designed for use with digital drive controllers. It features a size 065 housing with an 'A' length code, plain shaft with shaft seal, and a floating bearing on the A-side. The motor provides a continuous torque of 0.8 Nm at standstill and a nominal speed of 4000 min⁻¹. It includes an integrated multiturn absolute encoder for position feedback via digital servo feedback (DSF). The centering diameter is 95 mm. Motor balancing is standard, and a blocking brake delivers holding torque of 3.0 Nm. The unit is naturally cooled, uses side B power connectors, conforms to IP65 protection, and is compliant with DIN 42961. Operating temperature range is -30℃ to 80℃.

Technical Specifications

Length Code
A

Bearing Side
A-side

Startup Requirement
Qualified Electrician

Cooling Method
Natural Convection

Connectors
Circular for Power Connection

Maximum Coating on Housing
40µm

Power and Feedback Cables Maximum Length
75m

Cables Operating Temperature
-30°C to 80°C

Shock-response Spectrum
Type L in accordance with IEC 721-1

Water Protection
Covers and Housing

Peak Current Rating
8.1A

Maximum Tightening Torque
1Nm

Size
187mm with a Blocking Brake

Balancing Key
DIN 6885-A 5 x 5 x 22

What is the impact of having a blocking (holding) brake on MDD065A-N-040-N2M-095GB1 during power-off conditions?

The holding brake with 3.0 Nm torque prevents unwanted motion or backdriving when power is removed, improving safety. It also means mechanical load must be sized so brake can stop inertia without overheating.

How does the continuous torque at standstill influence system design for this motor?

With 0.8 Nm at zero speed, the motor can maintain position under load without rotating, which helps in vertical or static load situations. It reduces need for external rigid locking mechanisms in many installations.

What advantages does an integrated multiturn absolute encoder bring in harsh industrial applications?

The encoder retains full position information over multiple revolutions even after power loss, so systems don’t need homing cycles.

What are installation alignment concerns given the 95 mm centering diameter?

Proper matching of mounting interface to the 95 mm centering diameter is needed to minimize mechanical stress and run-out errors. Misalignment here can degrade encoder accuracy and increase bearing wear.

What is the practical difference between motor performance with vs without the holding brake engaged?

With the brake engaged, the motor can fully stop motion even under higher loads, whereas without the brake, the motor torque (0.8 Nm) is the only static resistance.

MDD-065A-N-040-N2M-095GB1

MDD065A N 040 N2M 095GB1

MDD065A-N-040-N2M-095-GB1

MDD065AN040N2M095GB1

MDD65A-N-040-N2M-095GB1

MDDO65A-N-040-N2M-095GB1

MDDO65A-N-O4O-N2M-O95GB1

mdd065a-n-040-n2m-095gb1

Internal Product Review

The Bosch Rexroth Indramat MDD065A-N-040-N2M-095GB1 is a synchronous AC motor for digital drive controllers. It equips blocking (holding) brake and an integrated multiturn absolute encoder for digital servo feedback. It is used in tool machines, robotics axes, packaging systems, printing machines and textile machinery demanding precise position and speed control.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MDD065A-N-040-N2M-095GB1.
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