Bunting General-Purpose Grate Magnets provide a properly configured, high-density magnetic field to trap and hold ferrous fines, fragments, and small metal objects. Stainless steel tubing and frames are welded into strong, integral units. They can be installed - or simply laid - inside hoppers, housings, and bins - and easily removed for cleaning.

Grates are built for low-abrasion applications and should measure at least twice the size of your outlet opening, so as not to restrict product flow.

General-Purpose Grate Magnets consist of multi-polarity 1-inch diameter cartridges arranged on 2-inch centers. They're available in round, square, and rectangular configurations from 4" through 36" in size.

Plain Style General-Purpose Grate Magnets are for use in choke or flood feed applications or for materials that have a tendency to bridge. Select rod or angular baffles for enhanced magnetic separation in free-flow applications.

Bunting HF Series Drawer Magnets effectively remove ferrous fines and fragments from free-flowing materials. They are designed especially for high-flow applications. Standard drawers intended for normal tramp iron collection typically consist of two to four removable trays made up of 1" diameter Bunting Magnetic Cartridges located on 2" centers and staggered from tray to tray for increased contact with the product flow. Standard Ceramic magnetic material offers the "reachout" and "wipe-off" resistance needed for most applications.

For even closer contact, we make HF Drawers with cartridges arrayed on 11/2" centers. This "close-cartridge" design provides a more concentrated magnetic field and increased contact between cartridges and product. Close-cartridge drawers offer excellent separation where bridging is not a problem but ferrous fines are.

For abrasive non-food applications, a hard-chrome tray option is available. Plate Housing Magnets should be used in place of drawer magnets for severely abrasive applications.

To meet high purity standards for products that tend to bridge easily, we offer "Waterfall" housings that have five rows of cartridges arrayed on wide 3" centers

Standard and Stainless Steel Housings
Standard drawer housings are constructed of heavy-duty mild steel. Stainless steel housings are also available. They're required for certain sanitary applications and whenever Rare Earth magnets are used. Stainless steel stands up to most corrosive environments, resists wear, and is the right choice when "clean room" standards must be met. Optional adapters permit easy installation of housings in most round, square, or rectangular spouting.

Manual and Self-Cleaning Models
You have three choices in cleaning options: manual, "manual" self-cleaning, and pneumatic self-cleaning.

On Manual Models, trays slide in and out from behind the access door for easy cleaning.

On Manual Self-Cleaning Drawers, hand-operated stainless steel collection sleeves slide out and away from stationary magnetic cartridges. As the sleeves clear the magnets, tramp metal falls off for easy collection. No manual wiping required.

Pneumatic Self-Cleaning Models
Bunting Pneumatic Self-Cleaning Drawers do all the work for you. The pneumatically powered cleaning mechanism releases ferrous contaminants into the discharge area automatically. We can provide timer or push-button controls. If you expect rapid contaminant accumulation or if your unit will be installed in a hard-to-reach location, you should consider the long-term savings in time and labor our Pneumatic Self-Cleaning Model offers.

Standard Hump Magnets
Bunting Hump Magnets remove large pieces of tramp iron as well as fine ferrous fragments from gravity-flow materials before they reach storage bins or processing equipment. The "hump" shape directs the product flow into the magnetic field and also breaks up clumps of material for maximum protection against entrapped contaminants. Materials that bridge easily with grate-type magnets flow smoothly through these units.

Easy Manual Cleaning
Hump Magnets have two Bunting Plate Magnets hinged and gasketed to the rugged steel housing. These plate magnets unlatch and swing open for quick manual cleaning.

Self-Cleaning Hump Magnets
Pneumatic control provides safe, easy operation. Cleaning takes only seconds to complete. With the product flow temporarily shut down, the magnets and a pneumatic discharge gate swing back to release the tramp iron collected through a special discharge chute. Magnets and gate then return to operating position so that processing can resume. Bunting can provide a complete pre-engineered control package for proper sequencing of the cleaning cycle. Contact a Bunting sales engineer to discuss this important option.

You can locate self-cleaning separation equipment where it will work most efficiently - where product velocity and depth of flow are lowest - without considering accessibility. Your operator needn't handle magnets in remote or awkward locations. Self-Cleaning Humps can save you operator time and downtime.

Magnetic Drum Separators and Drum Separator Housings
Bunting Standard Magnetic Drum Separators are manufactured of 302/304 stainless steel and have cleats to aid in pulling tramp metal through and out of the magnetic field. Drums are available with both Ceramic and Rare Earth magnets. Standard Ceramic Drums are effective in removing tramp metal such as chips, nuts, and bolts. Rare Earth models are recommended for applications involving extremely small metal fines or weakly magnetic materials.

The optional Drum Separator Housing is constructed of 11-gauge mild steel or stainless steel. Both models have 1/4" x 2" flanges. They are equipped with a flow controller at the infeed that protects the drum from direct impact and wear while it regulates and directs the product flow over the drum surface. The controller also prevents wash-back. An angular baffle at the discharge end diverts tramp metal from the flowing product. The location of the stationary magnet inside the rotating drum is user-adjustable for fine-tuning operation in the field. The units has precision sealed bearings that can be replaced with only partial disassembly. Standard unit drives can be provided in either single or three-phase voltage. Explosion-proof motors are available on request. Motor horsepower varies with the size of the unit.