A magnetic lifter should be operated only after the device, load, lifting machine, route, and landing area have been checked as one lifting task. The nameplate capacity alone does not prove that a lift is suitable. Material, thickness, shape, surface condition, contact area, temperature, load stiffness, center of gravity, and movement can all change the available holding performance.
This guide focuses on practical checks for manually switched permanent lifting magnets. For the operating principle and capacity factors, see how a permanent magnetic lifter works. Relevant Liftool product context: permanent magnetic lifters.
Quick Answer
Before operating a magnetic lifter, verify its identity, rated conditions, inspection status, lifting eye, body, pole face, handle, and lock. Confirm the load is a suitable ferromagnetic material and that its weight, thickness, shape, temperature, surface, stiffness, and center of gravity fit the manufacturer's load chart. Clean the intended contact area, place the magnet for stable balance, engage and lock it exactly as instructed, and make a controlled low test lift when the instructions and lifting plan permit. Keep people outside the fall zone, avoid side pull, shock, and swinging, land the load on stable support, and release the magnet only after the load is fully supported.
1. Confirm the Task Before Touching the Load
Start with the lifting plan, not the operating handle. Identify the load, destination, and travel path. The crane or hoist, hook connection, magnetic lifter, load, and any lifting beam must all be suitable for the planned movement.
| Task input | What to verify before lifting |
|---|---|
| Load | Material, weight, dimensions, thickness, shape, stiffness, surface, temperature, and center of gravity |
| Magnetic lifter | Identifiable model, rated capacity, applicable load chart, approved orientation, and current inspection status |
| Lifting machine | Adequate capacity, compatible hook or connector, controlled motion, and sufficient headroom |
| Travel path | Clear route, no people in the fall zone, no side pulling, and controlled acceleration |
| Landing area | Stable support, room to remove the magnet, and no trapped-hand position during release |
If the material is unknown, the load weight cannot be established, or the required load chart is missing, stop and obtain competent confirmation. A small hand magnet, a pull by hand, or the ability to switch the handle does not establish lifting capacity.
2. Inspect the Magnetic Lifter
Follow the pre-use inspection specified for the particular model and workplace. A practical visual and functional check normally includes:
- a legible identification plate, capacity marking, and operating labels;
- a lifting eye or suspension point without visible distortion, cracks, excessive wear, or unauthorized repair;
- a sound body, fasteners, handle, latch, and release mechanism;
- a clean pole face without serious damage, raised burrs, heavy corrosion, or embedded debris;
- free handle movement through the manufacturer's sequence and positive engagement of the lock;
- current examination, inspection, or test status where required by the workplace and local law.
Do not improvise a functional test with nails, loose scrap, or an unverified test piece. Such checks do not reproduce the material, thickness, contact, geometry, or forces of the planned lift. Use only the inspection and test method stated by the manufacturer or the employer's competent lifting-equipment program.
Remove the device from service if its identity is uncertain, the lifting eye or body is damaged, the pole face cannot make proper contact, the handle or lock is unreliable, or the inspection status is not acceptable. Do not compensate for a defect by lifting a lighter load unless a competent technical decision and documented procedure specifically authorize that action.
3. Check the Load and Contact Surface
Permanent lifting magnets need a suitable magnetic path through the load. Carbon and mild steels are common applications, but steel grade, alloy, heat treatment, thickness, and geometry can change magnetic response. Aluminium, copper, brass, wood, and plastic are not suitable. Stainless steel must not be accepted by name alone because grades vary in magnetic behavior.
Check the actual load against the model's instructions and load chart:
- Thickness: thin material may not carry the magnetic flux assumed by the nominal rating.
- Surface: rust scale, paint, oil, dirt, coatings, weld spatter, and roughness can create an air gap.
- Shape: round bar and pipe require an approved pole shape, diameter range, and separate round-load rating.
- Contact area: the pole face must sit on the area and orientation required by the manufacturer.
- Length and stiffness: long or flexible plate can sag and peel away from a single magnet.
- Temperature: both the load and the environment must remain within the model's limits.
- Balance: the magnet must be positioned so the load stays stable without sliding or tilting.
Clean loose contamination from both the pole face and the selected contact area. Do not grind, flatten, or alter a customer's load merely to make an unsuitable lift appear workable unless that work is separately authorized and controlled.
4. Position, Engage, and Make a Low Test Lift
Lower the magnet onto the selected contact area without impact. Keep the suspension line as vertical as practicable and place the device relative to the verified center of gravity. For long, flexible, irregular, or off-center loads, one magnet may be unsuitable even when the total weight is below its nominal capacity; a lifting beam, multiple synchronized magnets, or another lifting method may be required.
Move the operating handle through the exact sequence in the model instructions. Confirm that it reaches the engaged position and that the safety lock or latch is fully seated. Never use a pipe extension, hammer, or other improvised force on the handle.
When the instructions and lifting plan permit, raise the load only a small distance and pause. Check that the load remains level and stable, the magnet does not shift, the contact is maintained, and the lifting machine and attachment behave normally. Lower the load immediately if it tilts, slips, flexes unexpectedly, makes abnormal noise, or cannot be controlled. A successful low test lift is one check; it does not replace load identification, capacity verification, inspection, or planning.
5. Travel, Land, and Release the Load
Move smoothly and keep the load as low as practicable. Avoid sudden acceleration, braking, impact, side pull, rotation, and uncontrolled swinging. No person should stand under the load or enter the area where the load could fall, slide, or overturn.
Before release:
- Stop motion and place the load fully on stable support.
- Confirm the load cannot roll, slide, tip, or trap hands when magnetic force is removed.
- Remove tension from the suspension without allowing the hook or magnet to strike the load.
- Operate the release control exactly as instructed while keeping hands clear of pinch and contact areas.
- Lift the magnet away carefully and confirm that no second sheet, loose part, or debris has attached to it.
After use, clean and inspect the pole face, record any defect or unusual event, and store the device where it is protected from impact, contamination, moisture, excessive heat, and unauthorized use. Storage requirements are model-specific; do not rely on unsupported claims about "magnetic fatigue."
When to Stop the Lift
Stop before or during the operation if any essential condition changes or cannot be verified. Examples include an unreadable rating plate, missing instructions, uncertain material or weight, an unsuitable surface, unexpected plate deflection, an off-center load, a handle that will not lock, a damaged suspension point, people entering the fall zone, or loss of controlled motion.
Do not continue because the load has already left the ground. Land it in the nearest controlled safe position, isolate the equipment if needed, and have the issue reviewed by a competent person.
Inspection and Legal Context
The UK Health and Safety Executive's guidance on magnetic lifting devices highlights material, thickness, shape, contact, flexibility, balance, exclusion zones, training, inspection, and manufacturer information. It also explains that magnetic lifting devices may be lifting equipment or lifting accessories under Great Britain's LOLER framework, depending on how they are installed.
These points are useful for risk review, but Great Britain-specific law is not a universal legal rule. Inspection, thorough-examination, testing, and recordkeeping requirements must be established for the country, workplace, device, and service conditions involved.
FAQ
Can I rely on the nameplate capacity for every steel load?
No. The rating applies under conditions defined by the manufacturer. Material, thickness, contact, shape, temperature, stiffness, balance, orientation, and motion can require a lower capacity or make the lift unsuitable.
Can a permanent magnetic lifter pick up round bar or pipe?
Only when the lifter is designed and rated for the actual round-load diameter and condition. Do not apply a flat-load rating to round stock.
Does a low test lift prove the load is secure?
No. It can reveal poor balance or attachment before travel, but it cannot replace load verification, the manufacturer's load chart, inspection, and a planned lifting operation.
When may the magnet be switched off?
Only after the load is fully supported and stable, motion has stopped, and the operator can use the release control without entering a pinch, crush, or fall hazard.