BrandIndramatBosch Rexroth · Indramat

MDD112 Series · A-length model

MDD112A Indramat Digital AC servo motor

MDD112A is the A-length package within the MDD112 digital ac servo motor range. The model prefix fixes the 112 frame and A motor length, but the winding, cooling, feedback, centering, shaft, connector and brake fields still determine the complete replacement.

The planning manual’s MDD112A-N-015 row documents 10.5 Nm continuous torque at standstill and 8.3 A continuous current at a nominal 1,500 rpm winding. Those values describe that published operating row—not every complete MDD112A part number.

Call to check stockSend the complete type code so Litco can check the exact shelf configuration and condition

Call 210-680-9570 Quick Quote

Product identificationMDD112A

Match the complete nameplate, including every suffix. Ask Litco for current photos of the unit being quoted.

Known exact part-number variations

MDD112A exact part numbers

Call to check stock for an exact part.

Send the complete type code and a clear nameplate photo. Litco can check the exact configuration, current availability and repair options.

MDD112A overview

MDD112A is the A-length MDD112 servo motor. Baseline dimension A is 312 mm. The complete suffix determines winding, cooling, feedback, shaft and brake choices.

Model-specific technical data

MDD112A-N-015 manual snapshot

Source: MDD project planning manual, Fig. 10.1, page 96. Nominal winding speed is not a universal maximum usable speed. Match the drive, load, cooling arrangement and complete suffix.

Continuous ratings use the manual’s 60 K housing-temperature-rise basis. Published motor mass excludes the holding brake and external cooling hardware.

Model: MDD112A
Motor platform: Digital AC servo motor
Motor length: A designation
Baseline dimension A: 312 mm
Reference winding row: MDD112A-N-015
Reference nominal speed: 1,500 rpm
Continuous torque at standstill: 10.5 Nm natural convection / 13 Nm surface cooled
Continuous current at standstill: 8.3 A natural convection / 10.3 A surface cooled
Theoretical maximum torque: 31.4 Nm · drive dependent
Maximum current: 26.7 A
Rotor inertia: 61 × 10⁻⁴ kg·m²
Thermal time constant: 100 min natural · 75 min surface cooled
Published motor mass: 25 kg
Published nominal speeds: 1,500 rpm · 2,000 rpm · 3,000 rpm · 4,000 rpm
Centering diameter: 130 mm standard · 180 mm optional
Output shaft diameter: 32 mm (k6)
Shaft styles: Plain shaft · Keyed shaft

Dimensions, winding and cooling

Mechanical interface and speed

Shaft, flange, centering and winding choices

Shaft & flange

32 mm (k6) output shaft

Plain shaft and Keyed shaft are documented at series level. Match the flange drawing, shaft seal and hub connection before installation.

Centering diameter

130 mm standard · 180 mm optional

The centering choice is encoded in the complete part number and must match the machine flange or adapter.

Available speeds

1,500 rpm · 2,000 rpm · 3,000 rpm · 4,000 rpm

These are published nominal-speed choices for this model. The winding code and selected drive determine the actual configuration.

Feedback, shaft and brake choices

Configuration choices

Cooling, feedback and holding brake

Cooling

Manage continuous load and machine clearance

Natural convection
Surface cooling on published configurations

External or surface-cooling arrangements can change the installed envelope and are not interchangeable from the model name alone.

Feedback

Keep the drive’s position and speed signal compatible

Digital servo feedback
Digital servo feedback with integrated multiturn absolute encoder

Photograph the feedback connector and every suffix after the core model.

Holding brake

Match the installed holding requirement

Without holding brake
14 Nm holding brake
40 Nm or 60 Nm options not published for MDD112A

A blocking or holding brake is not a dynamic service brake. Check the published exclusion notes for the exact motor length.

Full type-code guide

Full part-number decoder

Read the tag from left to right

The decoder identifies what each field controls; it does not generate valid combinations. Use the factory type code and option exclusions as one record.

MDD

Motor for digital drive controllers

112

Motor frame / size

A

Motor-length and torque package

Housing design

Natural-convection or supported surface-cooling housing

Nominal-speed code

1,500 rpm or 2,000 rpm or 3,000 rpm or 4,000 rpm

Balance / side-B fields

Balance class and standard design without a side-B shaft extension

Feedback field

Digital servo feedback or Digital servo feedback with integrated multiturn absolute encoder

Centering field

130 mm standard or 180 mm optional

Shaft / connector / brake

Mechanical interface, connection direction and holding option

Get a replacement or repair quote.

Call to check stock, condition and lead time. Your part number carries into the form.

Quick Quote Call 210-680-9570 Add photos or repair details →

Keep browsing

Other MDD112 motor lengths

A-length · 312 mmMDD112A10.5 Nm reference torque · 25 kg B-length · 387 mmMDD112B17.5 Nm reference torque · 36 kg C-length · 462 mmMDD112C28 Nm reference torque · 48 kg D-length · 537 mmMDD112D38 Nm reference torque · 59 kg

← Return to all MDD series and models

Model-level planning-manual referenceFig. 10.1 · page 96

MDD 112 technical and dimensional data, manual pages 96–108. Published choices do not prove present inventory or that every option can be combined. Confirm the complete type code before replacement.

Open Original Manual ↗