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.