- Complete 1MS stator and 1MR rotor codes
- Frame length, winding and rotor-bore combination
- Liquid-cooling circuit and thermal monitoring
- Machine-supplied housing, bearings and feedback device
- Connected main-spindle drive and operating duty
1MB family · 1MB242 series
Bosch Rexroth 1MB242 frameless spindle motors
1MB242 is a focused N-length, 4B-winding configuration documented at 185 Nm, 1700 rpm and 33 kW with a 71 mm rotor bore.
Product identification1MB242
Match the complete nameplate, including every suffix. Ask Litco for current photos of the unit being quoted.
Models
Known 1MB242 catalog pages
Don’t see your configuration?
Send the complete nameplate code so Litco can check availability, condition and compatibility.
Call 210-680-9570Series overview
What 1MB242 identifies
The 1MB242 planning data is narrower than neighboring 1MB frames, but the stator and rotor remain separately identified components within a machine-built spindle. Litco still needs both complete component codes plus cooling, feedback, housing and bearing information.
Ratings, connections, feedback, braking and mechanical options vary by complete type code. Send Litco Automation a clear nameplate photo so the exact configuration and compatible replacement can be confirmed.
Technical specifications
Documented 1MB242 order-code fields
These values come from the preserved type-code reference. They describe documented ordering fields, not a promise that every theoretical combination was produced or is currently in stock.
- Documented frame length
- N
- Documented winding code
- 4B
- Rated torque
- 185 Nm
- Rated speed / power
- 1700 rpm · 33 kW
- Maximum speed
- 6800 rpm
- Rotor bore shown
- 71 mm
- Cooling data
- Liquid-cooled stator · 4.3 l/min required flow at the documented rated-loss condition
- Component protection
- IP00 in the manufacturer technical table
Configuration checklist
Identification guide
Match the whole 1MB242 configuration
- Direct-drive machine-tool spindles
- Turning, milling and grinding machines
- Transfer lines and processing centers
- Special-purpose production machines
Series questions
1MB242 questions
Before Litco pulls a unit
Is 1MB242 enough information to order a replacement?+
No. 1MB242 identifies the series group, but the complete type code still carries the winding, cooling, feedback, mounting, shaft, brake and mechanical options that determine compatibility.
Which 1MB242 fields should I compare first?+
Start with complete 1ms stator and 1mr rotor codes; frame length, winding and rotor-bore combination; liquid-cooling circuit and thermal monitoring. Then preserve the remaining suffix, material number, revision and every installed option or firmware label.
Where is 1MB242 equipment commonly used?+
1MB242 is documented for direct-drive machine-tool spindles, turning, milling and grinding machines, transfer lines and processing centers, special-purpose production machines. The installed machine, axis and connected equipment still control the final replacement decision.
Can Litco evaluate a failed 1MB242 unit?+
Yes. Litco can discuss replacement, repair and exchange paths after reviewing the complete code, application and failure information.
Get a replacement or repair quote.
Call to check stock, condition and lead time. Your part number carries into the form.