Jeffrey offers three models of industrial feeders: The EF models and HP Models are Electromagnetic Feeders. The NF models are Electromechanical Feeders.

EF and HP Electromagnetic Feeders operate through a controlled high frequency vibration. This is accomplished with electrical pulses and a machine that is tuned to a natural frequency that is higher than the electrical frequency of the power supply (sub-resonant tuning).

NF Electromechanical Vibrating Feeders are designed such that burden does not dampen vibration, but actually boosts performance. Our feeders are tuned near their own natural frequencies making them in tune with the materials they carry. 

Jeffrey Specialty Equipment supplies products to sawmills, planermills, plywood, OSB, LVL and MDF plants.