Model 520 Bulk Bag (FIBC) Filler

Gravity Style IBC filler for packaging 1,000-4,400 pounds (454-2,000kg) bulk bags (super sacks) and gaylord boxes with free-flowing powders, granular or pelleted materials, at a rate of up to 25 bags per hour (depending on machine options). Note: this filler is capable of bagging both flowing and non-free-flowing materials. Additional specialized product feeding devices may be required. The standard design is designed to handle materials that are dry. Free-flowing and of low humidity content.

model 520 professor
model 520 professor

Examples of Proper Application Include:


Salt, Sugar


Fertilizer, corn, soybeans,
limestone, refractory materials, plastic pellets


The Model 520 Gravity Style IBC filler uses gravity to move product from the supply hopper to the product feed inlet at the top of the machine. The product flows through a side gate into a spout, and into the bag. The Model 520 is an automatic gross weighing filler that simultaneously fills and weighs product directly into the bag.

Clean Operation:

The Model 520 IBC filler has a totally enclosed product flow path from the supply hopper bin to the bag. It can also be equipped with an optional air operated dust tight bag fill spout, making the Model 520 the cleanest filling IBC filler available.

Note: This machine does not close or seal bags. Bulk bags and liners are typically tied closed by hand upon completion of the bag fill.

Technical Specifications:

Proper application – free flowing powders & granular products

Weight range – 1,000-4,400 pound(454-2,000KG) open mouth bags

Process air – 80 PSI @ 1 CFM per bag fill cycle

Fill rate – 1-25 bags per hour (depending on product characteristics, bag sizing & equipment options selected)

Typical scale weight accuracy – +/- .5% of target weight

Standard Features:

Carbon steel contacting surfaces

Tubular steel framework

Air operated bag strap release

10' Gravity bulk bag accumulator conveyor

Bag straps--assuming 10" (25 cm) long bag strap loops)

Powder coated fabricated components

Digital load cell weighing scale

8" Diameter fill head assembly (M/S; non dust tight)

5' Powered bulk bag discharge conveyor

Designed to handle bag sizes up to 45" (122 cm) Long x 45" (122 cm) wide x 54" 137 cm) tall (maximum size not including

NEMA 12 electrical enclosures

1 Year limited warranty

Standard Features:

501-700 Powered fill head adjustment

Bulk only (single stage) slide gate material flow cutoff assembly (304 S/S)

503-400 Bulk & dribble (two stage) slide gate material flow cutoff (304 S/S)

513-300 "Pop-Up" grid deck vibratory densifier

502-300 8" ID x 12" OD dust tight fill head assembly w/ inflatable bag seal cuff (304 S/S)

Bulk only (single stage) slide gate material flow cutoff assembly (M/S)

503-300 Bulk & dribble (two stage) slide gate material flow cutoff (M/S)

511-100 Pre-fill bag inflation assembly

514-100 5' powered bulk bag accumulator conveyor

Operation Sequence:

An empty pallet will automatically index onto the filling station from the pallet dispenser.  An operator will manually hang an empty bulk bag on the filler and secure the inlet sleeve to the filling spout. Then the operator will depress the start button. The weighing scale will automatically “zero” and immediately after activate the designated feeding device (slide gate, auger, rotary air lock, etc.) and initiate the start of the bag fill.  The product is filled and weighed simultaneously.  When the target weight is reached, the flow of product will stop automatically. Removal of filled bags from the machine is a semi-automatic process.  When the fill cycle is completed, the bag strap holding arms will automatically release the filled bag, the system attendant will ensure that the filling neck of the bag is completely off the spout and push a button that will activate a discharge conveyor to automatically transfer the filled bag from the filler to a sections of either powered roller or gravity roller accumulation positioned directly after the discharge of the filling station.

CBE 510 and 520 Bulk Bag Fillers can be equipped with:

Slide Gate Material Flow Cutoff Assembly

Variable 3-position (2-Speed) slide gate material valve assembly

Air Operated Bag Strap Detensioner (Model 510 Only)

The Air Operated Bag Strap Detensioner raises and lowers the bag strap arms to release the bag straps that support the bulk bags during and after the filling process.

Rear Pivoting Air Operated Bag Clamp Arm

Air Operated Pivoting Bag Clamp arms that bring the rear two arms of the bag strap release forward to the location of the system operator so that he can more easily reach and secure the bag straps to the holding arms.  The arms will automatically pivot toward the operator station at the end of each fill cycle after the last bag has been released.  Once the new bag has been secured, the operator will push a button to return the arms to the filling position.  Includes all mechanics, controls and Integration.

Powered fill head height adjustment

Pneumatically operated adjustment of bag holding arms and fill head.  Allows operator to quickly and easily adjust filler (within literal seconds) the fill head and bag strap height for multiple bag heights to a precise preset location without the use of a forklift.  Through the operator controls, it automatically raises and lowers the fill head and holder arms with a selector switch to set the fill height position.  The lift can also be used to lower the fill head and arms between bag fills so that an operator can mount an empty bag from floor level without having to climb stairs or mount a mezzanine.

Pre-Fill Bag Inflation Assembly (for general purpose applications)

Low pressure / high volume regenerative blower bag inflation assembly designed to fully inflate and expand empty bags with on the filler before they are filled to ensure that the bag has fully opened.  Greatly improves visual appearance and stability of the filled bags.

Vibratory Bag Densifier Assemblies

Heavy duty vibratory bag densifying table designed to settle and densify contents inside the bag as it is filling.  The settler has a programmed routine that cycles the settler on and off automatically during the bag filling cycle.  The routine is fully adjustable through the operator control panel.  The amplitude of the vibrators is also fully adjustable depending on the level of settling desired by the user.

Automatic Pallet Dispenser (Model 520 Only)

Pallet Dispenser designed to dispense single pallets from a stack, onto a conveyor, into a palletizer or other type of system. This design lifts and suspends the pallet stack while a pallet pusher squares and indexes the bottom pallet as it feeds it to the next operation.

Automatic Slip Sheet Dispenser (Model 520 Only)

Automatically picks up slip sheets from a storage tray and positions them onto incoming pallets being cycles into the system by the pallet dispenser.  Includes PLC control system, All electrical, pneumatic and vacuum controls including all conduit and wiring).

Operator’s Mezzanines

Heavy duty operator’s mezzanine to elevate operators to the level of the conveying deck of the Model 520 Bulk Bag Filler.  Constructed of heavy structural tubing with integrated stairway, bar grating operator’s deck, OSHA Approved guardrails, toe guards and kick plates.


4804 N Main St,
Taylor, TX 76574


Monday-Friday 8am-5pm
Saturday & Sunday: Closed

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