Checkweighers
Checkweighers weigh every pack as it moves along the line and reject any that fall outside the target range, controlling giveaway while keeping fills legal. As part of the inspection and quality control stage on a food processing line, they sit downstream of filling and packing to catch underweight and overweight packs before they reach the case. Belt speed, weighing accuracy at that speed and the reject method decide whether a machine suits your product and rate. A gentle reject matters for fragile or unstable packs. New and used checkweighers appear here from verified sellers, with speed, weight range and condition stated on each listing.
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£800
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Global Marketplace
Checkweigher Types
Checkweighers vary in weight range, line speed and how they reject failing packs. The main types are below.
High speed checkweighers
These machines weigh packs at fast line rates for high volume production. Accurate weighing at speed is what separates them from slower units.
Heavy duty checkweighers
Built for larger cases and bulk packs, these units handle higher weight ranges. Robust construction and stronger reject mechanisms suit heavier products.
Combination checkweighers
Some units pair weighing with metal detection or other checks in one frame. This saves line space and simplifies a combined weight and contamination check.
Gentle reject checkweighers
For fragile or unstable packs, gentle reject methods remove failing product without damage or spillage. Match the reject type to the pack format to avoid line disruption.
Brands on Machinery Masters
The manufacturers featured here build the checkweighing systems that verify pack weight in line. Their equipment holds accuracy at speed and integrates with rejection and reporting routines. The names below are drawn from live Checkweighers listings and refresh as sellers add and sell equipment.
Latest Checkweighers Listings
Sparc Systems 8-lane linear weighing combination system
Fortress Stealth / Driver Southall DS3000 Combi Metal Detector Checkweigher
USED - 14 Head Yamato Multihead Weigher
Multi-Head Weigher
Ohlson - Multiweigher
Cintex CS4000 Checkweigher
Why Choose Machinery Masters
Verified Sellers Only
Every seller is verified before a single listing goes live. Machinery Masters also reviews listings for accuracy, so buyers can commit to high value machinery with confidence.
Global Reach
Listings come from sellers across Europe, North America, and beyond. That reach widens the options past any regional dealer network, and it is often the only way to find discontinued models in good condition.
Flexible Financing Options
Qualifying listings carry financing through partner providers. Terms are shown directly on eligible product pages, spreading the cost instead of draining working capital in one hit.
Direct Seller Contact
No broker sits between the buyer and the seller. Ask about service history, arrange inspections, and negotiate directly with the person who actually knows the machine.
Applications and Uses
These machines guard fill accuracy across food, beverage and consumer goods lines. The main settings follow.
Giveaway control
Catching overfilled packs stops product going out as free giveaway. Trimming that loss protects margin on every pack that runs.
Underfill and compliance checks
Rejecting underweight packs keeps fills within legal average weight rules. This protects the producer from compliance failures and customer complaints.
Missing component detection
A weight outside the target can flag a missing item or component in a pack. Catching these faults protects product quality and completeness.
Statistical process feedback
Weight data feeds back to filling equipment to keep the process centred. This tightens fill control and reduces variation over a run.
Benefits from Machinery Masters
The marketplace lists these units alongside the rest of the inspection and quality control line.
Speeds and weight classes side by side
High speed, heavy duty and combination units are grouped, so matching a machine to your rate and pack weight takes one search.
Second hand weighing, full margin protection
A serviced used checkweigher controls giveaway to the same standard as a new machine for far less outlay. Weight range, belt speed and condition sit on the listing so the saving is plain.
Watch the reject fire before buying
You deal with the seller directly, so ask to see the machine reject a failing pack at your line rate. That conversation also settles condition, service history and spares before you commit.
Frequently Asked Questions About Checkweighers
Ask for evidence it weighs accurately at your line speed using known check weights. Confirm the reject mechanism fires cleanly and the load cell and belt are in good order. A machine that drifts or misses rejects will not protect either your margin or your compliance.
The machine must weigh your pack accurately at your production rate in packs per minute. Confirm the weight range covers your product and the belt handles your pack size. A unit rated for a slower or lighter line will limit throughput and accuracy.
Reject methods range from air jets and pushers to drop and belt diverts, and the right one depends on pack weight and stability. Fragile or tall packs need a gentle reject to avoid damage or spillage. Match the reject type to your pack format before buying.
Combination units house a checkweigher and metal detector in one frame to save line space. This gives a single stage for both weight and contamination checks. If space is tight, a combined machine can be more practical than two separate units.
Listings come direct from the machine's owner, and you contact them to confirm accuracy, speed and condition. There is no intermediary in the conversation. That direct line lets you settle the technical detail before committing to the purchase.