Pro Series

Automatic Belt / Spindle Screw Capping Machine

A high-speed inline belt / spindle screw capping machine for round bottles and larger production lines. Guided side belts stabilise containers while the spindle system applies repeatable torque. It can be configured with a cap elevator or vibratory bowl feeder.

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Automatic Belt / Spindle Screw Capping Machine

Machine overview

Specification route

Higher-speed inline belt capper for round plastic bottles and production screw-cap lines.

Speed

3000–5000 bottles/hour

Cap range

Screw caps by trial

Bottle range

35–120 mm bottle diameter

Key features

✓

Guiding conveyor

Clamps bottles for stable and accurate torque application.

✓

Touchscreen HMI

Intuitive parameter setup and recipe storage.

✓

High-speed drive

Continuous-motion style capping for higher throughput.

✓

Cap feeding options

Choose cap elevator or vibratory bowl depending on closure and line layout.

Technical specifications

Model	LU-XG440B class
Voltage	110/220 V, 50–60 Hz
Power	Approx. 2 kW
Capacity	3000–5000 BPH, material dependent
Bottle diameter	35–120 mm
Bottle height	60–200 mm
Machine size	Approx. 2000 × 900 × 1600 mm for capper
With cap elevator	Approx. 3453 × 1393 × 2243 mm
Controls	PLC + touchscreen
Integration	Upstream fillers / downstream inspection and labelling

Final configuration, speed and tooling should be confirmed against real bottle and cap samples. Trial results may affect the exact quote, footprint and lead time.

Typical applications

Round plastic bottle capping
High-output cosmetic and household lines
Liquid filling, capping and labelling lines

What is normally included

Automatic spindle/belt capper base
Guiding conveyor and side belts
Touchscreen control
Cap elevator or vibratory bowl as ordered
Operation and maintenance manual

Gallery

Alternative machine images

Only different machine visuals are shown here so the page does not repeat the same product photograph.

Inline compact screw capping machine — Compact inline capping route

Semi automatic screw capper — Semi automatic capping option

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Screw capper torque guide

Plan tightening torque and sample trials.

Technical selection

Specify the LU-XG440B-class spindle screw capper as part of a continuous line.

A spindle capper is not simply a faster chuck. The bottle is controlled by side belts while several rotating contacts progressively tighten a pre-placed threaded closure. Cap placement, bottle spacing, belt pressure and spindle contact must therefore work as one process.

Verified screening envelope

The supplied specification lists a capacity of 3,000–5,000 bottles per hour, material dependent, for bottles approximately 35–120 mm in diameter and 60–200 mm high. The capper is listed at approximately 2 kW with PLC and touchscreen control. The approximate capper footprint is 2000 × 900 × 1600 mm; the configured system with cap elevator is larger. These are screening figures and must be confirmed against the full line.

Cap feed, pre-placement and thread engagement

The cap has to reach the bottle in the correct orientation and sit squarely enough for the spindles to engage the thread. A feeder, chute and placement device should be tested with production caps, including difficult batches. Cap nesting, static, surface marking and inconsistent skirt geometry can all interrupt continuous running. Use Cap Feeders UK for feeder-specific selection.

Side belts, neck support and spindle contact

Side belts should stabilise the bottle without distorting it or changing its height through the machine. The spindle contact material, angle, speed and pressure must suit the cap surface. Check smooth and ribbed caps separately. A closure can slip under the discs, become cross-threaded or reach an incorrect height even when the line appears to run continuously.

Acceptance, changeover and integration

For each format, record rail width, side-belt position, spindle height and contact, speed and cap-feed settings. Agree cap height, torque or opening result, liner condition, thread engagement and closure integrity. The timed run should include normal cap replenishment, upstream bottle flow and downstream queue conditions. Define line controls, low-cap response, jam recovery, guarding and emergency-stop interfaces.

When another route may be better

A single-head or semi-automatic machine can be more appropriate for unstable containers, short batches, frequent unrelated closures or formats that cannot be fed and pre-placed reliably. Compare the semi-automatic and automatic routes and the specialist Spindle Cappers UK resource before the final trial.

Buyer FAQ

Spindle screw capper questions.

How does a belt/spindle screw capper tighten caps?

Side belts stabilise the bottle while successive rotating spindle contacts apply tightening force to a cap that has already been placed on the thread.

Is 3,000–5,000 bottles per hour guaranteed?

No. The published capacity is material dependent. The agreed output must be demonstrated with production bottles, caps, cap presentation and the intended surrounding line.

Why are round, stable bottles commonly used?

Continuous side-belt control is easier when the bottle presents consistent contact surfaces and remains upright. Irregular, tapered or flexible packs need specific testing and may require another route.

Can smooth caps run on spindle discs?

Possibly, but contact material and pressure must be selected to transmit torque without slipping or marking. Smooth, decorative and soft-touch surfaces require sample trials.

Does a spindle capper apply caps automatically?

The cap must be placed before tightening. Placement may be by chute, pick-and-place or another feeder system; that equipment is a separate part of the line specification.

What should be checked during a timed run?

Monitor cap placement, bottle stability, cross-threading, spindle slip, final cap height, torque or opening result, rejects, minor stops and the sustained line rate.

Continuous-line validation

Spindle capping is a controlled bottle-and-closure system, not only a bank of wheels.

The LU-XG440B-class route uses side support and successive spindle contact to tighten a pre-applied screw cap while the bottle continues along the conveyor. The published capacity is material dependent, so sustained output must be confirmed with the proposed cap-feed method, production bottle family, conveyor conditions and agreed finished-pack checks.

Stability before torque

Side belts and guide rails must hold the container without crushing flexible walls, scuffing labels or lifting the bottle. The cap must be seated sufficiently for the first spindle contact to continue the thread rather than force a tilted closure. Lightweight, tapered or top-heavy bottles may need additional support or a different machine route.

Confirm cap pre-placement height and angle before the first tightening wheel.
Set side-belt pressure around the filled bottle, not only an empty sample.
Check spindle contact does not polish ribs, mark decoration or deform the cap skirt.
Test the smallest and largest formats after normal stops and restarts.
Record final cap height, removal result, liner condition and any leakage or tamper check.

Variable	Typical failure signal	What to change or verify
Cap pre-placement	Cross-threading, high caps or the closure falling before spindle contact.	Feeder release, chute geometry, placement pressure, bottle timing and cap orientation.
Bottle support	Bottle rotation, leaning, label scuffing or inconsistent final height.	Side-belt height and pressure, rail position, conveyor condition and filled-pack stability.
Spindle setting	Loose caps, marked ribs, damaged skirts or variable removal result.	Wheel height, pressure, speed relationship, contact material and approved format settings.
Line balance	Frequent stops, uncontrolled queues or output below the headline figure.	Cap feeder capacity, infeed spacing, accumulation, downstream availability and control signals.

Keep specialist spindle intent with the correct owner

This page covers the Lancing LU-XG440B-class screw-cap route. For a broader comparison of spindle capping layouts, applications and automatic line options use the dedicated Spindle Cappers UK resource rather than duplicating that specialist coverage here.

Prepare an acceptance run

Provide production caps, filled bottles, intended conveyor speed, cap-feed method, upstream and downstream equipment and the quality checks used for release. The bottle-cap torque-test checklist and line-layout review help structure the evidence.

Test the feeder, pre-placement, support belts and spindle section as one line.

A successful isolated tightening test does not prove sustained automatic production.

Send bottle and cap samples

Continuous-line stability

Validate cap placement, side-belt support and spindle contact as one process.

For the LU-XG440B-class route, the cap must be placed consistently before the bottle enters the tightening zone, while the side belts hold the pack without distortion and the spindle stages complete the closure without marking.

Pre-placement

Confirm cap orientation, chute or handover pressure, placement height and thread-start condition before spindle contact.

Bottle support

Set guides and side belts for the least stable and least rigid format. Check for squeeze, spin, polish, lift and neck deflection.

Spindle progression

Observe contact at each stage, final cap position and release. The closure should not be accepted from final torque or opening feel alone.

Line balance

Test upstream spacing, downstream accumulation, cap replenishment and stop/restart so the capper is not judged only in an uninterrupted run.

Format change

Record belt, guide, spindle and feeder settings with identified change parts and first-off acceptance checks.

Good-pack run

Measure accepted output with rejects, interventions and cap-feed events visible in the run record.

Prepare a continuous-line trial with the capacity guide, changeover guide and acceptance guide.

Question-led guidance

Additional questions about belt and spindle capping

Continuous spindle capping depends on stable cap pre-placement, bottle control and coordinated motion.

What is pre-tightening on a spindle capper?

Pre-tightening is the early controlled contact that stabilises a pre-placed cap and encourages the correct thread start before later spindle contacts complete tightening. Its setup depends on the closure and bottle. Confirm the resulting cap level using the cap-height and thread-start guide.

Why must side-belt and conveyor speeds be coordinated?

The bottle must travel through the capping zone without slipping, rotating unexpectedly or being pulled off-axis. Poor speed coordination can change spindle contact time and cap position. Include the final conveyor and control interface in the line-interface plan.

How is the number of spindle contacts selected?

It depends on the closure, bottle stability, line speed, available machine length and how tightening is distributed through the process. Do not infer suitability from spindle count alone; prove thread start, cap condition and accepted closure performance during a representative run.

What causes caps to loosen after spindle capping?

Possible causes include incomplete thread start, liner or component behaviour, inconsistent cap pre-placement, bottle movement, contamination or an acceptance method that checks only immediate torque. Use the closure-integrity process before increasing spindle pressure.

Discuss the real bottle, cap and production duty.

Send representative samples, target output and the current acceptance method so Lancing can review the correct capping route.

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