Bulk feed approaches the target.
Vibration moves product towards the weighing chamber. Product depth, hopper level and feeder amplitude affect how quickly and consistently the dose builds.
Verified Lancing model reference
Lancing LU-999 compact vibratory weigh filler.
A compact floor-standing weight filling machine for operator-presented bags, pouches, jars, pots and suitable containers, with every output and tolerance figure subject to the intended product and handling method.
Compact weight filling
Use the published figures as a trial starting point.
The LU-999 reference uses an upper product hopper, controlled vibration and an electronic weighing system. Product accumulates until the target is reached, then the measured dose is discharged into a suitable pack presented below the outlet.
The model is a practical starting point for smaller dry-product packs and flexible production, but it is not a universal powder filler. Product flow, particle size, dust, static, bulk density, pack-mouth clearance and operator cycle all influence the final result.
| Reference weighing range | 10–999 g. |
|---|---|
| Published output reference | 6–15 bags/minute, dependent on product, target weight and pack handling. |
| Published accuracy reference | Approximately ±2 g, dependent on material and confirmed only by a representative product trial. |
| Reference hopper | Approximately 280 × 280 × 270 mm. |
| Reference power | Approximately 260 W; the final UK electrical supply and machine build must match the quotation. |
| Product boundary | Free-flowing granular, powdered and small-piece dry products, subject to samples and trials; not a liquid or paste filler. |
How the cycle works
Separate product feeding, weighing and pack handling.
Testing each stage separately makes it easier to identify whether variation comes from the feeder, the weighing path, the discharge or the operator-presented pack.
Fine feed controls the final increment.
The machine reduces the flow as the target approaches. Material already travelling after the feeder slows or stops must be allowed for during tuning.
The complete dose enters the real pack.
The outlet, pack mouth, support height and operator timing must prevent retained product, bounce, spill or contact with the weighing system.
Product and pack suitability
Check volume and flow as well as weight.
A target within the 10–999 g reference range can still be unsuitable if the product is too bulky for the weighing chamber or the required pack opening does not clear the discharge. Low-density products, irregular pieces, static-prone materials and very fine powders need particular attention.
- Supply the normal product plus known batch variations, fines and broken pieces.
- Test the smallest, routine and largest target weights.
- Use the actual bag, pouch, jar or container rather than an open test vessel only.
- Observe hopper refill, low-level operation and retained product.
- Measure accepted finished packs, not only empty machine cycles.
When another route may be better.
A multihead weigher may be more appropriate when irregular pieces and higher output justify combination weighing. An auger route may control cohesive or poorly flowing powder more effectively. A larger single- or dual-head vibratory system may suit heavier target weights or a larger dose volume.
Acceptance test
Record a consecutive weight distribution at a real operating rate.
- Verify zero and physical isolation. Confirm that the weighing path is free from contact, trapped product and cable strain, then use suitable reference weights in accordance with the agreed procedure.
- Stabilise the product condition. Record batch, hopper level and any relevant moisture, dust or static behaviour before tuning.
- Run consecutive fills. Do not select only good results. Record net weights, stops, adjustments, spills and incomplete discharges.
- Calculate the distribution. Report mean, sample standard deviation, minimum, maximum, range and any result outside the agreed acceptance band.
- Include the operator cycle. Measure sustained accepted output with normal pack presentation, product refill and removal of the completed pack.
- Repeat after changeover. Confirm cleaning, correct reassembly, restored recipe settings and first-off verification before the next product is released.
Quotation information for the LU-999 route.
- Product name, photographs, particle size and representative sample.
- Smallest, normal and largest target weights.
- Required tolerance and the method used to judge acceptance.
- Actual pack dimensions, mouth opening and support method.
- Required accepted packs per minute and operator duties.
- Available floor space, hopper loading method and discharge height.
- Cleaning, allergen, cross-contamination or dust-control requirements.
- Downstream sealing, capping, coding, checkweighing or conveying scope.
Confirm the LU-999 on your product and pack.
Lancing can review the target range, pack interface, required output and trial evidence before the final configuration is quoted.
Buyer questions
LU-999 selection questions.
Is the published ±2 g figure guaranteed for every product?
No. It is a reference dependent on the material and operating conditions. A useful acceptance result needs consecutive fills using the intended product, target, pack and operator cycle.
Can the LU-999 fill powders?
Some free-flowing dry powders may be candidates, but cohesive, aerated, dusty or bridging powder may need an auger or another controlled-feed route. Product trials decide suitability.
Does a target below 999 g always fit?
No. The product volume must fit the weighing and discharge path. Low-density or bulky products can exceed the available volume before the target weight is reached.
How should output be quoted?
State whether the figure is machine discharges or accepted finished packs. The sustained figure should include normal pack presentation, product refill and removal of completed packs.
Can one machine run several products?
Potentially, but each materially different product needs its own flow assessment, settings, cleaning method and first-off verification.