A Field Tester's Take on the Permanent Lifting Magnet (YS Series, 100–5000 kg)

If you spend time around plate yards or machine shops, you already know the quiet power of a good magnet lifter. The YS series out of Donglv Industrial Park, Qingyuan District, Baoding (Hebei, China 071100) has been popping up in docks and fabrication bays I visit. To be honest, the first time I tried one, I expected fiddly setup; instead, it was click, lift, done.

What’s trending in magnetic lifting

Three themes are shaping the category: safer manual switching (positive mechanical locks), better N45–N52 NdFeB cores for higher energy product, and honest load ratings anchored to EN/ASME standards. Many customers say they prefer a simple lever with a safety latch over anything electronic—easier to trust during shifts and less to maintain.

YS series snapshot

Dawei’s YS line covers rated loads from 100 to 5000 kg for plates and cylindrical ferromagnetic workpieces. Light structure, strong magnetic circuit, lever lock, and, surprisingly, very smooth release. In factories, docks, warehouses, and transport ops, a Permanent Lifting Magnet like this trims slinging time and reduces damage versus clamps or chains.

Indicative specifications (real-world use may vary)

Notes: data are indicative; surface condition, temperature, material grade, gaps and paint reduce capacity. Always follow the rated load and standards in your region.

How it’s made and tested

• Materials: high-energy NdFeB core, low-carbon steel yoke, 40Cr shaft, machined pole shoes.
• Methods: finite element magnetic circuit design, CNC grinding for pole flatness, demag-resistant circuit.
• Testing: breakaway pull per EN 13155/ASME B30.20, 100% functional on/off lever test, dye-penetrant on critical welds, cycle test ≈ 10,000 lever actuations.
• Service life: around 8–10 years with annual inspection; keep poles clean and oiled lightly, avoid heat >80°C.
• Certifications: ISO 9001 QA; CE conformity available; material magnetic properties verified to IEC/ASTM methods.

Applications and field notes

Typical use: plate cutting lines, CNC loading, dockside plate transfer, pipe handling (with V-groove poles), small fab shops. One steel service center told me a single Permanent Lifting Magnet on a jib saved them ≈30% in changeover time versus chains—and fewer chip marks on finished sheet.

Vendor snapshot (what buyers actually compare)

Customization and safe use

• Custom pole shoes for thin plate or round bar; low-temp versions; stainless wear plates.
• Lever with dual-action safety; optional tag plates with QR for inspection logs.
• Use on clean, flat ferromagnetic surfaces only; keep air gaps near zero; never exceed rated load.

Test data from one batch I saw: YS-100 breakaway measured 345 kg; YS-1000 at 3,780 kg on dry S235 plate, 25 mm thick. That’s within the expected ≥3× margin noted in the standards language.

Mini case studies

Fabrication shop (EU): swapped chain slings for a Permanent Lifting Magnet on a gantry; changeover down by ~28%, floor damage claims fell to near zero. “Operators actually fight over who gets the magnet crane,” the supervisor joked.

Port maintenance (APAC): paired two YS-2000 units with a spreader beam for long plate; reported smoother picks in wind because of lower swing compared to hooks.

Bottom line

If you need fast, repeatable picks with fewer consumables, a Permanent Lifting Magnet like the YS series is hard to ignore—especially given the broad 100–5000 kg coverage and straightforward maintenance. As always, match the magnet to your thinnest plate, inspect annually, and train operators.

1. EN 13155:2020+A2, Cranes – Non-fixed load lifting attachments.
2. ASME B30.20, Below-the-Hook Lifting Devices.
3. IEC 60404-8-1, Specifications for magnetically hard materials.
4. ISO 12100:2010, Safety of machinery – General principles for design.