Introduction to 25 Kg Gross Weighing Machine (Bagging Scale)
The 25 Kg Gross Weighing Machine is an industrial bagging scale that weighs product directly in the bag fixed on the filling spout. Optimized for free-flowing and semi-free-flowing powders and granules, it delivers fast cycles, consistent accuracy, and dust-controlled operation for fertilizer, food grains, minerals, and chemical packaging lines. With rugged construction, microprocessor/PLC-based control, and seamless integration with conveyors, sealers, and stitchers, the gross weigher is a proven solution for dependable 25 kg bag filling in high-throughput plants.
Working Principle and Process Flow of 25 Kg Gross Weigher
In a gross weighing system, the empty bag is clamped on the filling spout and the material is dispensed directly into the bag. High-precision load cells continuously measure in-bag weight while the controller regulates two-speed feeding—coarse (fast) and fine (slow)—to reach the target. Once 25 kg is achieved, feeding stops, the clamp releases, and the bag is transferred to stitching or sealing via a take-away conveyor. This simple, compact flow minimizes product giveaway, boosts bagging speed, and ensures repeatable accuracy shift after shift.
Types of 25 Kg Gross Weighing Machines
- Gravity Feed — For free-flowing grains, seeds, sugar, and salt; highest speed with low maintenance.
- Belt Feed — For slightly cohesive or friable granules like fertilizer prills and pellets.
- Screw Feed — For powders such as flour, minerals, and fine chemicals requiring controlled dosing.
- Dual/Hybrid Feed — Combines gravity + screw/belt for wide product range with better accuracy.
- Dust-Tight Designs — Enclosed spout with aspiration ports for clean, low-dust bagging.
Key Features and Specifications
- Target Capacity: 25 kg per bag with ±0.1–0.2% typical accuracy (product dependent).
- Two-speed coarse/fine feeding with auto cut-off and in-flight compensation.
- High-resolution load cells, PLC/microprocessor control, and touch-panel HMI options.
- Quick-change product recipes; adjustable spout for paper, PP woven, or PE bags.
- Interfaces for conveyor, bag stitching/sealing, metal detector, and printer (batch/date).
- Rugged MS/SS contact parts; optional liners, anti-bridging devices, and de-aeration.
Applications of 25 Kg Gross Weighing Machine
- Food & Agro — Rice, wheat, pulses, flour, sugar, seeds, spices blends, and animal feed.
- Chemicals — Detergent powders, soda ash, polymers, and specialty chemical granules.
- Fertilizers — Urea, DAP, NPK blends, micronutrients, and soil conditioners.
- Minerals & Construction — Cement additives, limestone powder, silica, sand, and bentonite.
Benefits of Using a 25 Kg Gross Weigher
- High Throughput — Compact in-bag weighing delivers fast cycle times and continuous productivity.
- Consistent Accuracy — Load-cell feedback with fine feed control reduces product giveaway.
- Lower Dust & Spillage — Clamped spout and aspiration options keep the packing area cleaner.
- Operational Economy — Minimal manual intervention, lower maintenance, and fewer changeovers.
Top Manufacturers and Suppliers in India
Indian industry offers a robust ecosystem for gross weighing bagging machines, from standard gravity-feed units to advanced PLC-based systems with recipe storage and printer/SCADA connectivity. Vendors supply complete lines with bag placers, conveyors, sealers/stitchers, check-weighers, and palletizing aids—tailored for agro, fertilizer, minerals, and chemical sectors. Choose partners with proven installations, easy-to-source spares, and responsive service networks for maximum uptime.
Maintenance and Safety Tips
- Calibrate load cells at defined intervals; verify with certified test weights.
- Inspect spout clamps, gaskets, and bag sensors routinely to prevent leaks and misreads.
- Clean feeders (gravity gate/belt/screw) to avoid build-up and inconsistent flow.
- Lubricate moving parts per OEM schedule and monitor fasteners for loosening.
- Train operators on E-stop, jam clearing, and safe lock-out/tag-out procedures.
FAQs — 25 Kg Gross Weighing Machine
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