Description
1. Product Description
The Mannesmann Demag KBS 100 B 12 is a continuous-duty torque motor designed for industrial drive applications requiring low-speed operation and controlled torque. It is part of the Demag KBS motor series, commonly used in winding drives, cable drum systems, and material-handling equipment.
Unlike conventional motors optimized primarily for high rotational speed, the KBS torque motor is designed to provide substantial torque at low speeds and can operate at standstill under specified conditions. Its torque characteristics support controlled winding and unwinding, as well as driving and braking applications. The motor is suitable for compatible Demag drive systems where precise torque behavior is required.
The KBS 100 B 12 has a nominal torque rating of approximately 3.6 Nm at 100% cyclic duration factor (CDF). Available product information identifies 220/380 V, 50 Hz operation and current ratings of approximately 2.2/1.25 A. Before installation, verify the nameplate, mounting arrangement, terminal configuration, and compatibility with the existing Demag drive equipment.

KBS 100 B 12
2. Product Parameters — Datasheet
Brand: Mannesmann Demag
Model: KBS 100 B 12
Product Number: 3831456, as listed for one unit; confirm the individual motor’s identification number
Series: Demag KBS Torque Motor Series
Product Name: Torque Motor / Standstill Motor
Motor Type: AC squirrel-cage torque motor
Nominal Torque: Approximately 3.6 Nm at 100% CDF
Rated Voltage: 220/380 V, delta/star connection, as specified for the listed configuration
Frequency: 50 Hz
Rated Current: Approximately 2.2 A / 1.25 A
Duty Rating: 100% CDF for the specified configuration
Application: Cable drum drives, winding systems, material handling, and low-speed torque control
Mounting: Confirm the exact mounting arrangement from the nameplate and mechanical drawing
Protection Rating: IP55 is specified for certain KBS 100 B 12 configurations; verify the individual motor
Insulation Class: Class F for the referenced configuration; confirm from the nameplate
Dimensions: Not confirmed for the exact unit
Weight: Approximately 28.2 kg for a listed used/refurbished configuration
Place of Manufacture: Not confirmed for the individual unit
Country of Origin: Verify from the nameplate and shipping documentation
Product Status: Legacy product; used and refurbished units may be available
Discontinued: Reported as discontinued by some industrial suppliers; confirm current manufacturer support
Installation Requirements: Verify voltage, connection method, grounding, mounting dimensions, duty cycle, and drive-system compatibility before commissioning.
3. Recommended Mannesmann Demag Models
The following are related Demag KBS torque motors and neighboring frame sizes for maintenance and sourcing. Their torque ratings and physical specifications differ, so they should not be considered direct replacements without checking the application requirements.
- Demag KBS 80 B 12 — Smaller torque motor with an approximate 1.7 Nm torque rating at 100% CDF.
- Demag KBS 90 B 12 — Related torque motor with an approximate 2.6 Nm rating at 100% CDF.
- Demag KBS 100 B 12 — Same model family for like-for-like replacement sourcing.
- Demag KBS 112 B 12 — Larger torque motor with an approximate 5.6 Nm rating at 100% CDF.
- Demag KBS 125 B 12 — Higher-torque model rated at approximately 7 Nm at 100% CDF.
- Demag KBS 140 B 12 — Larger KBS torque motor with an approximate 10 Nm rating at 100% CDF.
- Demag KBS 100 B 12 G — Related KBS 100 B 12 configuration; verify the full ordering code and mounting details.
- Demag KBS 100 B 12-B3-1 — Referenced mounting configuration; confirm flange, terminal-box position, and installation orientation.
- Demag KBA 100 B 4 — Related Demag motor family with a different speed and torque characteristic.
- Demag KBA 100 B 6 — Related motor configuration with different operating characteristics.
- Demag KBA 100 A 4 — Alternative Demag motor family; verify electrical and mechanical compatibility.
- Demag KBA 100 A 6 — Related motor configuration for compatible Demag equipment.
- Demag KBH 100 B 8/2 — Related Demag motor family with a different pole configuration.
- Demag SBA 100 B 4 — Related industrial motor family; confirm application and mounting requirements.
- Demag KBS 112 B 12 — Alternative KBS torque motor for applications requiring a higher nominal torque rating.
Before ordering, compare the full model code, torque rating, voltage, current, frequency, duty cycle, mounting configuration, protection rating, and the existing drive system’s requirements.
