Strap dust build-up (rollers lose grip and strap starts slipping)
Strapping Machine Not Feeding Strap
If your strapping machine won’t feed strap (or only feeds part-way), the cause is normally within the feed roller grip/pressure, strap path/track condition, or a sensor/sequence check that stops the machine because it can’t confirm strap position. The checks below help you identify whether it’s a simple strap/load issue, contamination causing slip, or a mechanical snag point inside the chute/track.
Common things we see on site
Incorrect strap type / contaminated strap (debris causes drag and misfeeds)
Small burr/snag point in the chute (minor damage, repeated feeding faults)
Worn/glazed feed rollers or incorrect pressure (motor runs, strap doesn’t move)
Does This Look Familiar?
Common symptoms when the machine won’t feed strap:
- Feed motor runs but strap doesn’t move (slip at feed rollers or incorrect roller pressure)
- Strap feeds part-way then stops (track obstruction or position confirmation missing)
- Repeated strap jams in the chute/track/arch (strap path misalignment or debris build-up)
- Strap “birds-nests” inside the machine (strap return issue or incorrect strap size)
- Works for a few cycles, then stops feeding (rollers warming up, contamination, or sensor drift)
Typical Causes Behind This Fault
- Strap loaded incorrectly (wrong path through guides/rollers, missed strap channel)
- Worn or contaminated feed rollers (dust/polish reduces grip; rollers slip under load)
- Incorrect roller pressure (too light = slip, too heavy = drag and jams)
- Track/arch obstruction or damage (debris, burrs, misaligned joints, damaged guide sections)
- Strap specification mismatch (strap too wide/thick/thin for guides or feed setup)
- Feed/position sensor issue (strap end/position not detected, cycle aborts mid-feed)
- Feed motor/drive problem (weak torque, clutch wear, gearbox wear, intermittent drive)
Quick sanity check: If the motor runs but the strap doesn’t move, suspect roller grip/pressure.
If it feeds part-way then stops, suspect a track obstruction or sensor confirmation issue.
When It Needs An Engineer
If the strapping machine won’t feed strap after basic checks (strap loaded correctly, guides clear, correct strap size), it’s usually quicker to have it diagnosed properly rather than repeatedly re-threading and cycling the machine.
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Feed motor runs but strap won’t advance (slip / worn feed rollers)
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Repeated strap jams inside the track or arch
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Machine won’t complete a feed cycle (sensor/position fault)
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Intermittent feeding issues stopping production
At this stage, structured fault-finding is usually more effective than continued resets — especially on older or heavily used machines. Most “not feeding” faults are caused by worn feed rollers, strap track obstruction/misalignment, or a sensor/actuator problem preventing the machine completing the feed sequence. Our engineers work across all major strapping machine brands and control systems.
Service context
Part of our wider Packaging Machine Repair support
This strapping machine fault page sits within our engineer-led, multi-brand Packaging Machine Repair & Breakdown Support.
Request Strapping Machine Support
Send us the machine make/model (if known) and the symptoms you’re seeing. A quick photo of the display or fault helps speed things up.
You’ll get the quickest response by including the fault symptoms and any error message.