Wire Rod Coil Compacting Press: the Cycle Before Strapping

Executive summary A wire rod coil compactor presses a hot-rolled coil down along its axis so the loose rings close up before the binding wires or straps go on. In this clip our press runs two compaction cycles, about 30 s and about 24 s from the start of the ram stroke to the ram back at the top. Our wire rod compactor is specified for 1,000 to 1,800 mm OD coils of 500 to 2,000 kg, with 60 to 400 kN compacting force and a 30 to 40 s cycle, configured per project.

Table of Contents

• What the clip shows, in order
• Why wire rod coils are compacted
• Compaction cycle time on the clip
• Wire rod compactor specifications
• Takt check
• Selection checklist for a wire rod coil compactor
• Controls and safety
• Engineering FAQ
• Next step
• Related reading
• Sources

What the clip shows, in order

The press is a grey steel gantry with yellow hydraulic cylinders, a moving crosshead with a round press head, a yellow base platform and yellow side arms. A silver wire rod coil stands on the platform with its axis vertical. One operator stands at the lower left of the picture.

First cycle

1. 0 to about 9 s. The press head is up and the coil rests on the platform.
2. About 12 to 18 s. The head moves down and starts to compress the top of the coil.
3. About 21 to 27 s. The head keeps pressing and the coil height drops visibly.
4. About 30 s. The head reaches its lowest point and holds.
5. About 33 to 42 s. The head rises again and the coil stays in its compacted shape.

Second cycle

6. About 45 to 51 s. A coil rests on the base with the machine at rest.
7. About 54 to 60 s. The head comes down, and the side arms close in on the coil. This coil already carries green straps, so the cycle presses a coil that has been strapped before.
8. About 63 to 66 s. The head and side arms hold the pressure and the coil is visibly shorter.
9. About 69 to 78 s. The head rises and the arms open. At about 69 to 72 s a hand is seen at the equipment on the right while the head is still moving. By about 78 s the head is fully up.

Why wire rod coils are compacted

A coil laid down from the rolling mill is loose: the rings sit apart and the coil is tall and springy. Pressing it along its axis closes the rings up, so the binding wires or straps hold a compact, stable package that stacks and ships well. The binding goes on while the press holds the coil down; once the head lifts, the bindings carry the spring-back.

Our compactor binds each coil with 4 wires from 4 wire strapping heads, which feed 6.3 to 8 mm wire rod as the binding, with the press force set by the hydraulic system.

Compaction cycle time on the clip

The first cycle matches the 30 to 40 s compactor cycle on our product page, and the second is a little shorter. In the second cycle the side arms close on the coil while the head presses, keeping it centred.

Wire rod compactor specifications

Takt check

For an illustrative target of 90 coils per hour, the takt is 3,600 ÷ 90 = 40 s. A 30 to 40 s compactor cycle uses all of that, so a single press station leaves no margin for coil transfer at that rate. We would plan it with transfer and binding sized together at the layout stage, or lower the target. At 60 coils per hour, a 60 s takt leaves 20 to 30 s for transfer.

Selection checklist for a wire rod coil compactor

• Coil OD, height before compaction and weight, within 1,000 to 1,800 mm OD and 2,000 kg.
• Binding: wire or strap, number of bindings per coil.
• Compacting force needed for your rod grade.
• Coil transfer: C-hook, conveyor or crane.
• Output target per hour, against the 30 to 40 s cycle.
• Hydraulic and air supply at the site.

Controls and safety

The press head, the side arms and the space between head and platform are crush zones. The hand at the right-hand equipment while the head is still rising, at about 69 to 72 s, is the kind of reach we design out. Guarding and the operator position keep hands away until the head is at the top and the arms are open.

Stop, isolate and lock out the press, and release the stored hydraulic pressure, before anyone works on the coil, the bindings or the press head. Never reach under a raised head that is held only by hydraulics.

The standards that apply depend on the destination market. For CE markets, ISO 12100 sets the risk-assessment method and EN 415-10 covers general requirements for packaging machines, which fixes guarding and the emergency-stop arrangement.

Engineering FAQ

Q: How long does one compaction cycle take? A: On the clip, about 30 s and about 24 s from the start of the ram stroke to the ram back at the top. Our compactor is specified for a 30 to 40 s cycle.

Q: What coil sizes does the compactor take? A: Coils of 1,000 to 1,800 mm OD and 500 to 2,000 kg, with compacting force adjustable from 60 to 400 kN.

Q: How many bindings go on each coil? A: 4 binding wires from 4 wire strapping heads, using 6.3 to 8 mm wire rod as the binding.

Next step

We size a wire rod coil compactor in three steps:

1. Submit your layout drawing with the coil OD, height, weight, binding type and output target, to info@fhopepack.com.
2. Receive a proposal within 48 hours, including the press arrangement, the binding heads and the cycle check against your takt.
3. Book a site survey so we confirm coil transfer, the foundation and the hydraulic and air supply.

Related reading

• Wire rod compactor with steel wire strapping
• Wire coil compacting and strapping machine
• Razor wire packing machine
• Coil tilter and upender for palletised coils

Sources

• Compactor specifications: Wire rod compactor product page
• Clip timing: frame timings taken from the clip, 3 s between frames
• Machine in action: our video on YouTube
• Standards scope: ISO 12100:2010, EN 415-10:2014

Last reviewed: 2026-10-05