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  4. Wobbler Feeder
The Wobbler Feeder consists of a frame, trianguler bars and a chain drive system used to rotate the bars. The positive action of the rotating triangular bars causes material to tumble forward assuring separation of fines and a uniform feed rate, it is a sturdy machine suitable for heavy duty work.

MEKA Wobbler Feeder is used in aggregate and mining applications to sort the run-of-mine material before the primary crusher.
Especially in case of difficult to screen, wet, sticky bulk materials kind of feeding and scalping distinctly outclasses the traditional screening machines,
which frequently show baking and adhesions with these materials.

•    Increases final product quality without the need for washing
Recommended for pre-screening and cleaning of dirty material with a high content of clay and moisture.

•    Increases total output as it reduces the waste
Scalping the feed reduces the amount of material going into the primary crusher, it also reduces the required size and capacity of the crusher needed.

•    Scrapes off sticky material from rock surfaces
The square shafts with self-cleaning disc rotate synchronously to each other and fine materials, sludge fragments and waste materials that are not required to enter the main crusher fall down through the opening defined in the design by gravity.

•    Can cope with wet and sticky material without clogging
Excel where others fail in situations too wet and sticky for other feeders and scalpers.

•    Requires much less maintenance than a scalper
Self-cleaning and designed to resist clogging and reduce blinding.

•    Triangular Shaped Rolls Creates more wobbles per turn
•    Herringbone design induces lateral movement on the feeder
•    Solid shafts easily handle the shocks from boulders
•    Heavy Duty Chains and Sprockets for Syncronized Operation

What is a Wobbler Feeder?

Disk feeders, known also as “wobbler” feeders, contain a number of disks mounted side by side at an appropriate distance and that rotate to carry any materials placed on them. The disk cross-section may be in the form of an ellipse, triangle or circle.

By adjusting the clearances in a wobbler feeder, it is possible to separate fine materials of various sizes before reaching the crusher, and to filter aggregate of two or even three sizes. Fine materials of different sizes passing underneath the feeder can then be directed to separate belts. Thanks to this feature, wobbler feeders both feed the crusher as a primary operation, and also sort (screen) the materials.


What is the operating principle behind Wobbler Feeders?

The triangular, elliptical or circular disks rotate synchronously, carrying the material over the feeder and separating finer materials through the bottom. As a result, a more homogenous material is provided to the following phase.

Wobbler feeders, known also as disk feeders, can be produced in sizes of 1–2 meters wide and 3–8 meters long, as required. Two or three disk feeders can be set up in sequence for longer distances.

In wobbler feeders, the disks are rotated by a powerful gearbox-governed electric motor with a single gear, although it is also possible to rotate each disk from a separate motor. If necessary, the fine aggregate that passes through the disks can be fed to the belt to form a bed for the crushed rock exiting the crusher, thus slowing the wear and tear on the rubber band.


For what processes/applications are Wobbler Feeders used?

Wobbler feeders are the most appropriate type of feeder when working with moist and sticky materials. Handling and screening moist and muddy material can be difficult, and blockages to the system can be frequent. Wobbler feeders can easily feed materials with a high moisture content to crushers.

The synchronized rotation of self-cleaning elliptical disks on circular-section disks ensures the removal of moist and sticky materials from the coarse material through compression and friction forces. Material passing through the disks can be separated or mixed with material as it exits the crusher. These feeders can manage the requirements of demanding working conditions, will also producing successful results in high-capacity facilities.


Useful tips for the maintenance and operation of disk (Wobbler) feeders.

  • ·       The timely maintenance and lubrication of the motion system is important for wobbler feeders.
  • ·        In these feeders, each disks is supported on both sides. The operating environment of such feeders is likely to be dirty due their suitability for moist and muddy materials. Disk bearings should be kept as clean as possible.

  • ·        If each of the disks is to be rotated with a separate motor, malfunctioning disk bearings or drive systems can be replaced without stopping the feeder, although the necessary precautions should be taken to ensure occupational safety.

MWF 1035

MWF 1235

MWF 1440

MWF 1640

MWF 1660

MWF 1860

Available Settings (mm) Available Settings (inch) 40, 60, 80, 100, 150 1,5, 2,5, 3, 4, 6 40, 60, 80, 100, 150 1,5, 2,5, 3, 4, 6 40, 60, 80, 100, 150 1,5, 2,5, 3, 4, 6 40, 60, 80, 100, 150 1,5, 2,5, 3, 4, 6 40, 60, 80, 100, 150 1,5, 2,5, 3, 4, 6 40, 60, 80, 100, 150 1,5, 2,5, 3, 4, 6
Capacity (mtph) Capacity (stph) 200-300 220-330 300-400 330-440 350-450 385-496 400-600 440-661 400-650 440-716 650-1000 716-1102
Power (kW) Power (HP) 22 29,5 22 29,5 30 40,2 37 49,6 2X37 2x49,6 2X37 2x49,6
At specified inclination and for material weighing 1.6 t/m³ or 100 lbs/ft³. Capacity values are indicative only and depend not only on feeder size but also on feeder inclination, feed gradation, etc.


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