Oct . 03, 2025 11:50 Back to list

Permanent Lifting Magnet: Power-Free Safety up to 1000kg?

Field Notes: The YS Series That’s Quietly Redefining Plate Handling

If you spend time on shop floors or in yards, you know the feel when a good rigging tool just…works. The permanent lifting magnet from Dawei (YS series) has that vibe—energy-free, lever-on, lift done. Built in Donglv Industrial Park, Qingyuan District, Baoding, Hebei 071100, it’s designed for plates and cylindrical workpieces in steel service centers, docks, and fabrication shops. And, to be honest, the timing aligns with where the industry is heading.

Industry pulse

Trends I keep hearing from maintenance managers: fewer slings and clamps, more magnets; tighter safety audits (ASME/EN) and shorter changeovers. In fact, energy-free magnets are winning because they cut cables, batteries, and the “did we charge that?” anxiety. The YS spans 100–5000 kg rated loads, so one family covers the bulk of daily lifts.

What’s inside (short version)

YS lifters use a permanent magnet circuit (commonly NdFeB), a machined steel housing, V-grooved pole shoes for flats and rounds, and a positive locking handle. No power required; the magnetic field is “switched” mechanically. Temperature limits and pull performance depend on steel grade, thickness, and surface condition—real-world use may vary, obviously.

Model	Rated Load (kg)	Typical Safety Factor	Min Plate Thickness for Full Load (≈)
YS-100	100	≥3:1	8–10 mm
YS-200	200	≥3:1	10–12 mm
YS-400	400	≥3:1	12–16 mm
YS-600	600	≥3:1	16–20 mm
YS-1000	1000	≥3:1	20–25 mm
YS-2000	2000	≥3:1	30–40 mm
YS-3000	3000	≥3:1	40–50 mm
YS-5000	5000	≥3:1	≥50 mm

Notes: Thickness assumptions on clean, low-carbon steel; confirm with your workpiece. Factory data indicates pull-off tests at ≥3× WLL under controlled conditions.

Applications and advantages

Plates in cutting bays, flame/plasma tables, round bar via the V-groove, warehouse staging, truck loading—this is the daily bread. Operators like the one-hand handle and the tactile lock. Many customers say changeover time drops noticeably; I’ve seen fewer pinch-point injuries compared to chains and C-clamps. And yes, a permanent lifting magnet works even during a power outage.

How it’s built and tested

Materials: NdFeB magnet array, low-carbon steel body, precision-ground pole shoes, mechanical lock.
Process: CNC machining → magnet circuit assembly → demag check → pull test (≥3× WLL) → visual/functional audit.
Standards: Designed with ASME B30.20 and EN 13155 principles; factory QMS to ISO 9001.
Service life: around 5–10 years with proper storage, clean pole faces, and routine inspection.

Real-world snapshots

Dockyard case: two YS-1000s on a spreader lifted 1.2 t plates; cycle time improved ≈28% versus chain-and-hook, per the supervisor. Job shop anecdote: swapping to a permanent lifting magnet reduced rework from clamp marks on finished sheets—small win, big morale boost.

Vendor comparison (quick glance)

Vendor	Range (kg)	Cert/Standards	Notes
Dawei YS	100–5000	ISO 9001; ASME/EN design basis	Strong value; broad availability in APAC.
EuroBrand L-Series	125–3000	CE; EN 13155	Higher price; polished fit/finish.
ValueMag PML	100–1000	Factory QA varies	Budget option; check pull-test certificates.

Customization and usage tips

Custom pole shoes (deep V, wide face) for tubes or wide plates.
High-temp variants for preheat zones (ask first; magnets don’t love heat).
Use clean, flat contact surfaces; verify thickness; never exceed WLL.
For long/deflecting plates, use multiple permanent lifting magnet units on a spreader.

Final thought: the YS series feels like a practical, safety-forward lift tool that pays for itself in fewer rigging steps. Not flashy—just solid.

References

4000 lb Adjustable Gantry Crane - Hebei Dawei|Heavy-Duty Steel, Quick Assembly