Overview
The document provides detailed information on Electromechanical Vibrating Feeders, specifically the RF and MF models, which are designed for medium and heavy-duty bulk material handling. These feeders offer high feed capacities to enhance productivity, with models available to handle feed rate capacities from a few tons up to 6,000 T.P.H.

Operating Principle
The RF and MF models operate on a sub-resonant system of two elastically connected masses. The moving mass is the trough, while the fixed mass houses a shaft rotated by an electric motor. The RF model uses an eccentric shaft, while the MF model uses a concentric shaft with adjustable counterweights. This design allows for less installed power and smooth operation.

Controllers
Optional controllers can regulate feed rates by adjusting the motor's revolution rate. Additional regulation options include two-speed flow control and automatic flow rate control in response to external signals or motor current drain.

Hopper Design
Proper hopper design is crucial for optimal material flow. Key design parameters include rear and front wall angles, height between the hopper outlet and trough, and hopper opening width. These factors depend on material characteristics like particle size, density, and humidity.

Trough Models
Standard troughs are made of carbon steel with optional special steel or lined coatings. Various shapes are available, including flat bottom, tubular, and grizzly bar troughs.

Specifications and Dimensions
The feeders are versatile, with trough widths ranging from 250 to 3000 mm and lengths from 600 to 6000 mm. The document provides detailed specifications for each model, including maximum capacity, power, and weight.

Caution
Installation, operation, and maintenance must follow the provided service instructions to prevent harm to people or property.