35 Years of Hydraulic Expertise  ·  Old-School Communication.  New-School Service.

978-368-3325
Balers · Baler · B-1

Why Do My Bales Fall Apart After Ejection?

A bale that comes apart after ejection almost always failed at the ties — but the tie is rarely the root cause. Over-filling past the tie channels, a tie routed outside a channel, worn T-hooks, or the wrong tie gauge for the material will all produce the same result. The failed tie itself tells you which.
Get Ties and Hooks — 978-368-3325
All Baler Symptoms
Tier 1 to diagnose. Keep the failed tie — it is the evidence.
Step One

Read the Failed Tie

Do not throw it away. Thirty seconds looking at how it failed narrows this to one of four causes.

Find the failed tie in the debris.

It is the single most useful piece of evidence and it gets swept up within minutes.

Did it break, or did it slip?

A tie that snapped has a clean or necked failure point. A tie that slipped is intact and simply came undone at the hook.

Broken means overloaded or wrong gauge.

Either the bale was denser than the tie is rated for, or the tie is lighter than the machine needs.

Slipped means the hook or the routing.

Worn or bent T-hooks, or a tie that was not fully seated when the platen came down.

Count how many held.

If one of five let go, it is that tie or that channel. If all of them let go, it is the bale or the ties as a batch.

Keep one failed tie and one good tie

Bring both when you call, or photograph them side by side. It settles the gauge question immediately, and gauge is the answer more often than anything mechanical.
Narrowing It

Four Causes

  • Over-filling past the tie channels — The most common by a wide margin. Cardboard packed above the fill line covers the channels, so the tie cannot sit where it was designed to sit.
  • Tie routed outside a channel — An operator in a hurry, or channels packed with cardboard so the tie will not drop in. Looks correct from the front and fails on ejection.
  • Worn or bent T-hooks — The hooks take the load every bale. Worn ones let the tie slip rather than hold; bent ones will not seat in the channel.
  • Wrong tie gauge or material — Lighter tie than the machine and material need. Shows up as clean breaks rather than slips, and it gets worse as bales get denser.
Why It Matters

A Burst Bale Is Not Just Housekeeping

It is a hazard

A bale that bursts as it is moved or lifted throws its contents and can drop a load onto whoever is handling it. The heavier and denser the bale, the worse it is.

It costs the bale

A burst bale gets re-baled, which is labour, another set of ties and another cycle on the machine.

It is usually cheap to fix

Hooks, ties and a fill-line mark on the chamber. Of everything on this site, this is one of the least expensive problems to close out.
The Repair

What Actually Fixes It

  • Mark a fill line on the chamber and use it. Most burst bales are over-filled bales.
  • Clear and straighten the tie channels. Cardboard packed in a channel is why ties get routed wrong.
  • Replace worn or bent T-hooks. They are a wear part and they are inexpensive.
  • Match the tie to the machine and material, not to what was cheapest last time.
  • If bales are still bursting with all of that right, the chamber geometry needs looking at — bulged sides change how the tie sits.
Narrowing It

Three Causes

All three look identical from outside. Separating them is technician work.

Piston seal bypassing

Oil crosses inside the cylinder. The most common on a machine with hours on it, and usually arrives alongside lighter bales.

Valve spool leakage

The directional valve no longer blocks flow when centred — spool and bore wear, or contamination holding it off its seat.

Load-holding check failing

Where fitted, this is the part specifically there to stop the platen descending. Its failure shows up as drift and nothing else.
Before You Call

What Tells Us What You Have

A vertical baler is identified by make, model and serial off the plate, and that is usually enough for us to know the chamber size, the chain, the ties and the cylinder before we leave.
  • Make, model and serial — Off the data plate. A 3400HD and a V63HD are different machines and take different parts.
  • Bale size the machine makes — Nominal chamber width and depth, and typical bale weight.
  • Tie type and count — Wire, strapping or baling twine, how many per bale, and whether you supply them.
  • What it bales — Cardboard only, or mixed with film, shrink wrap or foam. It changes the wear pattern.
  • Bales per day — Duty is what decides whether a wear part is due or failing early.
  • Photos — The full machine, the chamber with the platen up, the data plate, and whatever is broken.

If the plate is unreadable

Retail balers spend years being pressure-washed and painted around. If the plate is gone, photograph the machine from the front and one side and we can usually identify it from the frame and the control layout.
Safety

Where Your Checking Stops

Tier 1 · Site check

Looking at a failed tie, checking channels and hooks with the machine off and locked out, marking a fill line.

Tier 3 · Service technician

Any work inside the chamber, chamber wall repair, and anything involving a loaded or partly ejected bale.

Do not crack a fitting to check for pressure

Stored hydraulic energy is the hazard that makes this Tier 3 no matter how simple the repair looks. Loosening a fitting “to see if there’s still pressure in it” is how people get injection injuries — which do not look serious for the first hour and are a surgical emergency. Pressure gets relieved deliberately and confirmed at the gauge.
Questions We Get

Tie Failures, Answered

Would heavier ties just solve it?
Sometimes, and it is worth testing — but if the bale is over-filled, heavier ties move the failure rather than stopping it. A bale dense enough to snap a correctly rated tie is a bale that is also hard on the chamber, the door and the ejection mechanism.
Usually it is the process rather than the person. If ties are being routed wrong or bales over-filled, the fill line is missing, the channels are packed, or the machine is being pushed because cardboard is stacking up. All three are fixable without blaming anybody.
No. A correctly set up baler with the right ties should not be losing bales at all. One in ten says something is marginal — usually fill level or hook wear — and marginal gets worse.
Yes, and matching the tie to the machine and the material is part of the point. Tell us the make and model and what you are baling.

Get It Running

Show Us the Problem. We'll Build the Fix.

Call us

978-368-3325

24 hours a day, 7 days a week. Response within 2 hours.
Call for Help

Find us

T&T Weber Hydraulic Inc.
184 Stone St, Unit 5
Clinton, MA 01510

Where we go

Onsite compactor and baler service throughout New England — Massachusetts, Connecticut, Rhode Island, New Hampshire, Vermont and Maine. Cylinder reseal and replacement, domestic replacement cylinders, hydraulic, electrical and controls, and full mechanical repair.