Slip Ring Motors
Felco slip ring motors are a specialized type of asynchronous motor, designed for heavy-duty applications that demand high starting torque, smooth acceleration, and precise load control. Unlike standard squirrel cage motors, these motors feature a wound rotor connected to external resistors via slip rings and brushes. This allows for variable rotor resistance during startup, enabling reduced starting current and optimized torque characteristics. Felco slip ring motors are ideally suited for demanding industries where reliable performance under high mechanical loads is essential — including cranes, elevators, conveyors, crushers, and mills.
Technical Information
Felco offers custom-built slip ring motors to meet specific industrial and project requirements. From design consultation and technical support to localized manufacturing and quality assurance, we ensure our motors deliver reliable, efficient performance across a wide range of demanding sectors.
Our Types of Motors
• Medium Size Series
Frame size: 355-630
Rated Out Put: 185 – 2500KW
Insulation Class: F
IP Class: IP54/ IP55/ IP 44
Voltage: 6Kv, 10 Kv
Enclosure: IC01, IC81W, IC611
Mounting: Horizontal
• Large Size Series
Frame size: 710 - 1000
Rated Out Put: 500 – 5600KW
Insulation Class: F
IP Class: IP54/ IP55/ IP 44
Voltage: 6Kv, 10 Kv
Enclosure: IC01, IC81W, IC611
Mounting: Horizontal
Key Features
High Starting Torque with Reduced Inrush Current: deal for starting under load without stressing the power supply system.
Adjustable Rotor Resistance: Allows tailored motor performance to match varying load conditions.
Robust Construction: Available in cast iron or steel enclosures, designed to withstand harsh industrial environments.
Smooth Acceleration & Controlled Start-Up: Ensures protection for mechanical components and longer equipment life.
Flexible Configuration Options: Customizable designs, cooling systems (IC411, IC611, IC81W), and mounting options to fit specific project needs
Applications
Cranes and hoists
Elevators and winches
Mills and crushers
Conveyor systems
Pumps and compressors with high inertia loads
Dive Into the Details
Our comprehensive catalogues and brochures provide in-depth technical data, performance charts, and application guides for our entire product range.
