MSK071C-0300-NN-M2-UG1-RNNN

MSK IndraDyn S Synchronous Motors

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The MSK071C-0300-NN-M2-UG1-RNNN is an IndraDyn S Synchronous Servomotor by Bosch Rexroth Indramat in the MSK IndraDyn S Synchronous Motors series. It uses natural convection cooling, an optical multiturn absolute encoder with EnDat2.1 interface and 2048 signal periods resolution. Designed for increased concentricity, it supplies 14.0 Nm at 8.5 A standstill and 44.0 Nm peak torque at 32.9 A, featuring an electrically-released holding brake.

Technical Specifications

Cooling
Natural convection

Encoder Connector
Rotatable, 240°

Encoder Technology
Optical

Encoder Turn Type
Multiturn Absolute

Encoder Interface
EnDat2.1

Encoder Resolution
2048 signal periods

Motor Length
C

Motor Size
071

Holding Brake
With holding brake, electrically-released

Holding Brake Torque
23 Nm

Design
Increased concentricity

Product Type
IndraDyn S Synchronous Servomotor

Shaft Type
Plain shaft

Rated Speed Code
0300

Continuous Current at Standstill 100 K
8.5 A

Continuous Torque at Standstill 100 K
14.0 Nm

Maximum Current
32.9 A

Maximum Torque
44.0 Nm

Winding Inductivity
10,900 mH

Frequently Asked Questions

How does the optical EnDat 2.1 multiturn encoder (2048 periods) on MSK071C-0300-NN-M2-UG1-RNNN help servo loop accuracy and startup behavior?

It provides absolute multi-revolution position referencing for removing homing cycles and improving first-move repeatability. Its EnDat 2.1 and incremental 1 Vpp signals interpolates 2048 signal periods for fine commutation and low speed ripple.

What does natural-convection cooling imply for continuous torque and allowable ambient on MSK071C-0300 variants?

The convection housing dissipates heat without fans that allows a continuous torque 14.0 Nm at 8.5 A. Its typical ambient guidance for comparable MSK071C models is 0–40 °C at ≤1000 m elevation.

Why specify the “increased concentricity” design on MSK071C-0300-NN-M2-UG1-RNNN?

Its higher mechanical concentricity reduces runout-induced torque ripple and improves velocity uniformity to aid print registration, metrology moves and surface finish on precision axes. Its housing is explicitly offered with a high-concentricity option in the MSK071C family.

How is the electrically-released 23 Nm holding brake on MSK071C-0300-NN-M2-UG1-RNNN applied in vertical-axis safety?

The brake holds the load when the drive is disabled for supporting gravity-countering axes during E-stop or power loss. Its sizing uses 23 Nm static torque vs. reflected load torque with safety margin per the machine’s risk assessment.

What is the advantage of the 240° rotatable encoder connector specified on MSK071 size-071 motors?

The swivel connector simplifies cable exit orientation to minimize bend stress and easing routing in tight cabinets or moving carriages. It also streamlines maintenance by allowing access without re-terminating cables.

Common Misspellings

Internal Product Review

The Rexroth Indramat’s IndraDyn S MSK071C-0300-NN-M2-UG1-RNNN motor is presented with natural-convection cooling and an optical EnDat 2.1 multiturn encoder that supports 2048 signal periods. It delivers 14.0 Nm at 8.5 A (standstill) and 44.0 Nm peak torque. This motor has an electrically-released 23 Nm brake system that makes it well-suited for packaging, printing and assembly/handling axes.