Shuttering Magnet

Shuttering Magnet
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Shuttering Magnet

Clamp a side form to the steel pallet in under three seconds, then lift it off by hand.

A shuttering magnet replaces the bolt and the weld. Nothing is drilled into the table, so one unit serves every panel layout the plant runs.

3,100 kgMax holding force
< 3 sClamp and release
N42Magnet grade
10 yrsService life

How a Shuttering Magnet Holds a Formwork Panel

Magnetic force replaces the bolt, so the table stays flat and the panel moves freely.

Shuttering magnet with switch lever clamped to a steel formwork table

A single lever rotates the internal magnet block.

A shuttering magnet is a switchable magnetic fixture for precast concrete element factories, used to fix the side formwork onto the steel pallet.

Inside the housing, a neodymium block rotates between two positions. Turned on, the flux is shorted through the steel table and the unit locks. Turned off, the flux stays inside the housing and the unit lifts away by hand.

Because nothing is welded or bolted, the same magnet serves any panel layout. That reusability is what makes the system pay back on a plant that changes moulds weekly.

Precast Concrete Magnet Range

Shuttering Magnet Models and Holding Force

Pick by panel height and pour pressure, then confirm the adapter matches your table thickness.

Model Holding force Length × Width Height Weight Suggested panel
HM-MF-0900 900 kg / 8,800 N 180 × 60 mm 60 mm 3.2 kg Side forms up to 200 mm
HM-MF-1200 1,200 kg / 11,800 N 200 × 60 mm 60 mm 3.8 kg Side forms up to 300 mm
HM-MF-1500 1,500 kg / 14,700 N 220 × 60 mm 60 mm 4.4 kg Most wall and beam moulds
HM-MF-1800 1,800 kg / 17,600 N 240 × 65 mm 65 mm 5.1 kg Tall walls, deep beams
HM-MF-2100 2,100 kg / 20,600 N 260 × 65 mm 65 mm 6.0 kg Heavy pours, high slump
HM-MF-2500 2,500 kg / 24,500 N 300 × 70 mm 70 mm 7.4 kg Large panels, tunnel forms
HM-MF-3100 3,100 kg / 30,400 N 330 × 75 mm 75 mm 9.2 kg Precast stairs, heavy sections

Holding force is measured on a 12 mm ground steel plate at room temperature. Design load should stay at or below one third of this value to cover vibration and release torque.

For thin panels or narrow ribs, a precast insert magnet or a magnetic chamfer often replaces the standard block.

 

Four Steps to Set a Precast Concrete Magnet

A clean table and a full lever stroke are the two things that decide holding force.

01

Clean the Table

Concrete residue and release agent film both cut holding force. Wipe the contact face before every set.

02

Position the Form

Set the side rail against the magnet adapter, then check the dimension against the panel drawing.

03

Switch On

Push the lever fully to the on position. A partial stroke leaves flux leaking and cuts force by up to 40 %.

04

Release After Stripping

Turn off before lifting. Pulling a live magnet off the table wears the housing and can chip the pallet.

Accessories for Precast Shuttering Magnets

The magnet is one part of the fixing. These are the fittings that complete it.

Magnetic steel chamfer strips for precast concrete edges

Magnetic Steel Chamfer

Clips to the formwork edge and holds a chamfer profile without nails.

Steel chamfer profile held by magnetic strip on formwork

Chamfer Profile Set

Standard 15, 20 and 25 mm profiles, cut to the panel length on site.

Precast inserted fixing magnet for lifting sockets and cast-in inserts

Insert Fixing Magnet

Holds lifting sockets and cast-in inserts square to the form face.

Why Precast Plants Switch to Horizon Shuttering Magnets

Gear icon representing machined housing quality

Machined Housing, Not Cast Only

The contact face is ground flat after casting, so the magnet sits on the table instead of rocking on burrs.

Drawing icon representing layout design support

Layout Support

Send a panel drawing and we mark magnet positions and quantities against pour pressure.

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Stocked Models, Short Lead Time

The four most-used models are held in stock, which keeps replacement units at days rather than weeks.

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Spares That Match

Adapters, levers and rubber pads are sold separately, so a worn part does not retire the whole unit.

Shuttering Magnet FAQ

How many shuttering magnets do I need per metre of formwork?
A common starting point is one HM-MF-1500 every 600 mm for a 300 mm wall. Increase density at corners and where the pour height exceeds 1.5 m.
Will the magnet work on an aluminium table?
No. Aluminium is not ferromagnetic, so there is no flux path. These units need a steel pallet, typically 8 mm or thicker.
What happens if the table has a thick paint layer?
A thin coating is fine. Build-up beyond about 1 mm starts to act as an air gap and reduces holding force noticeably.
Can the magnets be used on a tilting table?
Yes, but add a mechanical stop. Tilting puts shear load on the magnet, and the friction holding it is lower than the rated pull.

Send your panel drawing for a magnet layout

Tell us panel size, pour height and table thickness. We reply with model, quantity and spacing.

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sales@horizonmagnetics.com +86 574 2788 3742 +86 189 5741 3363
128# Buzheng East Road, Wangchun Industrial Park Zone, Ningbo, China

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