- 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 · 1MB375 series
Bosch Rexroth 1MB375 frameless spindle motors
1MB375 is the largest documented 1MB frame, with B and D lengths, 6B or 6D windings and ratings reaching 875 Nm.
Product identification1MB375
Match the complete nameplate, including every suffix. Ask Litco for current photos of the unit being quoted.
Models
Known 1MB375 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 1MB375 identifies
The manufacturer table documents 1MB375 B- and D-length configurations with distinct torque, speed and power values. The rotor chart also restricts some bore and rotor-design combinations, so the two complete component codes must be checked before mechanical integration.
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 1MB375 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 lengths
- B · D
- Documented winding codes
- 6B · 6D, depending on frame length
- Rated torque
- 636 · 875 Nm
- Rated speed range
- 300–600 rpm across documented configurations
- Rated power range
- 27.5–55 kW across documented configurations
- Maximum-speed range
- 1200–2400 rpm across documented configurations
- Rotor bores shown
- 125 · 170 mm, with rotor-design and length restrictions
- Construction / cooling
- 1MS stator and 1MR rotor · liquid-cooled stator · IP00 component data
Configuration checklist
Identification guide
Match the whole 1MB375 configuration
- Direct-drive machine-tool spindles
- Turning, milling and grinding machines
- Transfer lines and processing centers
- Special-purpose production machines
Series questions
1MB375 questions
Before Litco pulls a unit
Is 1MB375 enough information to order a replacement?+
No. 1MB375 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 1MB375 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 1MB375 equipment commonly used?+
1MB375 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 1MB375 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.