Indramat, founded in Neuwied in 1958, became Bosch Rexroth’s electric drives and controls business when Bosch bought Mannesmann’s industrial arm in 2001, as Wikipedia’s article on Indramat records. The Indramat name was dropped, but Bosch Rexroth kept supporting the products sold under it, and its current families (IndraDrive, IndraDyn and IndraControl) carry the name in theirs. On a machine from the 1990s or early 2000s the rating plates may say Indramat, Rexroth Indramat or Bosch Rexroth; the part numbers are the same system.
The families, by the letters on the plate
Motors
- MAC: the older servo motors.
- MKD and MHD: the servo motors of the ECODRIVE and DIAX era.
- MDD: servo motors of the same period.
- MSK: IndraDyn S, the current-generation servo motors.
Drives
- DKC: ECODRIVE compact drives.
- DDS and HDS: DIAX drives.
- KDS, KDV, TVD, TDM: older drives and supply modules.
- HCS, HMS, HMV: IndraDrive C and M, the current generation, with CSB and CSH control sections.
EKB, a Dutch distributor, published a 2023 list of obsolete Bosch Rexroth components that includes MKD, MHD, DKC, DIAX04 and ECODRIVE03. For the status of one exact part, ask Bosch Rexroth with its full number.
The -FW suffix
Many Rexroth drive numbers end in -FW, for example DKC03.3-040-7-FW. The suffix means the drive is ordered without firmware: the firmware is a separate item, and the drive only runs the axis with the firmware the machine expects. When you buy a used or surplus drive, ask which firmware it carries, and have the machine’s firmware number and parameter backup at hand. A drive that powers up with the wrong firmware is not yet a working spare.
When a like-for-like spare is the fix
Migrating from DKC or DIAX to IndraDrive is a project: drives, often motors and cables, parameters and in some cases the control. For one failed drive on a machine that otherwise runs, a spare of the same type with the right firmware is the shorter way back, and the migration can be planned. Finding a replacement part explains what to compare when you do change generation.
Searching Sparehawk for Rexroth and Indramat parts
Search by the full type code, or by the family letters from the lists above when you want to see a whole range: MAC, MKD, MHD, MDD and MSK for motors, DKC, DDS, HDS and the IndraDrive HCS, HMS and HMV for drives. Each offer shows its condition (New / OEM, new surplus, refurbished or used), the supplier’s country and the lead time. Search MKD, DKC or browse all Rexroth parts.
Before you order
- Copy the full type code from the rating plate, every block: in MKD071B-061-KP1-KN every block after the frame size is an option, and a motor that differs in one block is a different motor.
- For a drive, add the firmware number and the plug-in modules fitted to the old unit.
- Back up the parameters if the old drive still communicates.
- Ask what “refurbished” covered. Refurbished, surplus and used explains the conditions, and warranty on surplus parts lists the questions to ask about cover.
No matching offer? Send a request with the rating-plate photo: how requests work.