A coffee packaging machine, also called a coffee bagging machine, automatically weighs and fills whole bean or ground coffee into bags, pouches, or containers, replacing manual scooping and hand-weighing. The Model S4 is an affordable, entry-level coffee packaging machine built for roasters and business owners filling bags and pouches from a couple of ounces up to 10 pounds. It’s built by a manufacturer with a proven track record producing American-made, high-quality bulk weighing and packaging machines since 1994.
This machine has one of the simplest setups available. With the press of a button, you can quickly change bag weight and fill sizes. It’s built for packaging whole coffee beans or coffee grounds, and can also bag teas, snack foods, candy, nuts, spices, powders, and other free-flowing dry bulk products.
Parts of the Model S4 Semi-automatic Scale Machine
How do you package coffee with the S4?
The steps outlined below are for filling a 16 oz (1 lb) bag with roasted whole coffee beans.
1. Coffee beans are loaded into the supply hopper at the top of the S4 and the target fill weight is set to 1 lb on the controller.
2. The operator places a 1 lb bag on the fill spout.
3. The first fill cycle is started by depressing the foot pedal. At this point, the machine and controller switches into “learn mode” for the first cycle. The controller tests the flow characteristics of the coffee beans and decides the best speeds and duration for the vibration of the feeder.
4. The controller will start a bulk flow (fast flow) of the coffee beans from the hopper, through the vibrating feeder, and into the weigh hopper below. Once the target set weight of 1 lb nears completion, the controller will automatically switch to a dribble flow (slow flow) of the coffee beans into the weigh hopper. Once the set target weight of 1 lb has been reached, the feeder stops.
5. The weigh hopper releases the 1 lb of coffee beans into the bag that is placed on the spout.
6. Each bag after the first fill cycle is now filled automatically with the perfect amount of coffee beans by placing it under the spout and depressing the foot pedal.
7. After filling each bag, the operator sends it through a vacuum bag sealer or band sealer to lock in freshness with a flush of nitrogen, print date codes, trim bag tops, and more.
Watch a Video Demonstration
The standard setup for bagging coffee with the S4 can realistically achieve up to 500 bag fills per hour, depending on flow characteristics and packaging line setup (or up to 800/hour in continuous operation). With the S7 Dual Filling System, output can reach up to 1,500 fills per hour.
Standard Features of the Model S4:
- Arrives fully assembled, ready to start packaging coffee immediately
- Auto SMART controller with self-adjusting fast and slow fill speed control and automatic tare adjustment
- Weight indicator displays down to 1 gram (.001 lb)
- Fills bags up to 10 lb precisely; can also fill rigid containers
- 3.5 cubic foot supply hopper (different hopper sizes available)
- 304 stainless steel on all product-contact surfaces
- Powder-coated chassis with locking casters (optional stainless steel chassis available)
- Standard footprint: 67 in. high, approximately 4.6 sq ft (23 in x 30 in)
- Power requirements: 2 amps, 110V/60Hz AC (240V-120V transformer available)
- Air requirements: less than 0.25 CFM at 30 PSI
Learn more about Small Bag Filling Machines »
Tabletop version of the Model S4. (Table not included)
Coffee Packaging Machine FAQs
What size bags can the S4 coffee packaging machine fill?
The S4 fills bags, pouches, and containers from a couple of ounces up to 10 pounds, covering the range most small and mid-sized coffee roasters need for retail and wholesale bags.
Is the S4 a good fit for ground coffee, or just whole bean?
The S4 is built primarily for whole bean coffee, which flows freely through the hopper and feeder without issue. Ground coffee is sticky and can clog a standard setup, so it typically needs the optional heavy-duty electromagnetic vibrator to keep product flowing consistently. If you’re mainly packaging ground coffee, talk with our team first so we can spec the right configuration.
How fast is a coffee bagging machine like the S4?
A single S4 realistically fills up to 500 bags per hour, or up to 800 per hour in continuous operation. Pairing two units in the S7 Dual Filling System increases output to up to 1,500 fills per hour.
Do I need compressed air to run this machine?
Yes, but not much: less than 0.25 CFM at 30 PSI, which a small pancake air compressor can supply.
What happens after the bag is filled?
Filled bags are typically sent through a vacuum bag sealer or band sealer to lock in freshness, flush nitrogen, print date codes, and trim bag tops.
Learn more about Bag and Pouch Sealers »
Vacuum sealing and flushing 6 bags of coffee at a time
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