Servosteel

Press feeding systems

Mechanical Decoilers

Our mechanical decoilers carry coils from 500 kg to 4,000 kg. The hub is clamped by mandrel; speed control and a brake lining system are standard, and the unit can unwind in both directions.

Capacity, width and inner diameter

Coil weightMaterial widthCoil inner diameter
500 kg30 – 300 mm300 – 550 mm
750 kg30 – 300 mm350 – 550 mm
1,500 kg30 – 400 mm400 – 550 mm
2,500 kg30 – 500 mm450 – 550 mm
3,000 kg80 – 800 mm450 – 560 mm
4,000 kg100 – 1,200 mm450 – 560 mm

Model suffixes: A motor driven (hold-down arm optional) · LA motor driven, 1,600 mm coil outer diameter and hold-down arm standard · F brake type, hold-down arm standard. Coil outer diameter is 1,300 mm on A and F models. On the 3,000 and 4,000 kg models the coil outer diameter is 1,600 mm, inner diameter 450–560 mm (630 mm with adapter) and mandrel expansion is mechanical. Conical plunger decoilers of 3,000–4,000 kg run sheet thickness up to 5 mm.

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Key features

Mandrel hub clamping

On 500–2,500 kg models the hub is clamped with a handwheel; the 3,000 and 4,000 kg models have a conical mandrel.

Speed control and brake lining

Unwinding speed is adjustable and the brake lining system stops the coil from running loose. Both are standard.

Bidirectional unwinding

The shaft turns both ways, so the strip can be fed from the top or the bottom and coils wound in either direction run without changing the line layout.

Three types: A, LA, F

A is motor driven, hold-down arm optional. LA is motor driven with 1,600 mm coil outer diameter and hold-down arm as standard. F is brake type, hold-down arm standard.

Frequently asked

Common questions

What is a mechanical decoiler?

A machine that carries light and medium coils on a hub and unwinds them into the line; the hub is clamped mechanically. Servosteel's mechanical series carries coils from 500 to 4,000 kg.

What capacity and strip width does a mechanical decoiler handle?

Models are 500, 750, 1,500, 2,500, 3,000 and 4,000 kg. Material width is 30–300 mm on the 500 and 750 kg models, 30–400 mm on 1,500 kg, 30–500 mm on 2,500 kg, 80–800 mm on 3,000 kg and 100–1,200 mm on 4,000 kg.

What is the difference between the A, LA and F models?

A is motor driven with an optional hold-down arm. LA is motor driven, takes coils up to 1,600 mm outer diameter and has the hold-down arm as standard. F uses a brake instead of a motor, with the hold-down arm as standard. Coil outer diameter is 1,300 mm on A and F models.

Can a mechanical decoiler handle thick material?

The 3,000 and 4,000 kg conical mandrel models run sheet thickness up to 5 mm. For heavier coils or wider strip, move to the hydraulic series.

Which coil inner diameters does a mechanical decoiler accept?

300–550 mm on 500 kg, 350–550 mm on 750 kg, 400–550 mm on 1,500 kg, 450–550 mm on 2,500 kg; 450–560 mm on the 3,000 and 4,000 kg models, 630 mm with an adapter.

Get a quote for Mechanical Decoilers

Send us your profile drawing or capacity requirements — our engineering team will get back to you within 48 hours.