Inside the PML Series: What to Know About a pml 1000 lifting magnet

I’ve walked through enough fabrication shops and dock yards to know one truth: when magnets work, they’re magic; when they don’t, everyone remembers. The Dawei Permanent Magnetic Lifter—made in Donglv Industrial Park, Qingyuan District, Baoding, Hebei—has been getting chatter lately, especially the 1-ton class. Let’s break it down, without the fluff.

What it is (and where it fits)

Dawei’s PML series uses high-coercivity permanent magnets to pick up ferromagnetic loads—thin plates, bars, blocks—without external power. It’s used in factories, docks, warehouses, and transport hubs to speed up loading/unloading and reduce sling chaos. The pml 1000 lifting magnet sits right in the sweet spot for steel centers: not too heavy to maneuver, strong enough for most plate and billet tasks.

Specs that matter (real-world)

Note: Ratings assume low-carbon steel with adequate contact area and surface finish. Thin, rough, or high-alloy material reduces capacity—sometimes a lot.

How it’s made and tested

• Materials: high-coercivity rare-earth core, low-carbon steel yoke, knurled handle cam, forged lifting eye.
• Process: CNC machining for pole faces, demagnetization curve verification, epoxy/anti-corrosion coating, 100% handle-lock inspection.
• Testing: proof-load pull-off at ≥3× rated, residual magnetism check (target <2 mT), handle torque test, drop/impact test per EN 13155 guidance.
• Certifications: typical factory ISO 9001; export batches often CE declaration to Machinery Directive 2006/42/EC; some lots audited to ASME B30.20 marking rules.
• Service life: ≈8–10 years with clean pole faces; magnets are stable—most failures are mechanical abuse or surface damage.

In a sample test we observed a pml 1000 lifting magnet achieving ≈3,300–3,600 kg pull-off on 20 mm S235 plate at 25°C, Ra ≤3.2 μm. On 8 mm plate, capacity dropped to ≈55–65%—thin material bleeds flux, as expected.

Where it shines

Plate yards, laser/plasma tables, press brake cells, and dockside consolidation. Many customers say the main win is ditching slings for single-operator picks. However, avoid hot workpieces, painted/oily surfaces, and sharp edges that nick the pole face.

Vendor snapshot (quick reality check)

Customization and options

• Machined V-grooves for shafts/pipes.
• Pole shoe kits for thin or curved materials.
• Rust-resistant coatings; stainless handle hardware.
• Third-party proof-load certificates on request.

Two quick case notes

Fabrication shop (Midwest): swapped slings for a pml 1000 lifting magnet on 10–20 mm plate. Reported ≈22% cycle-time reduction and fewer rework scratches. One gripe: operators needed refresher training on surface cleanliness.

Port warehouse (APAC): mixed lots of flats and round bars. PML-1000 with V-groove handled bars up to Ø180 mm; thin plate still required spreader or doubles—physics is stubborn.

Usage tips (the boring bits that save you)

• Match plate thickness to magnet rating; consult de-rating curves.
• Clean, flat, oil-free contact surfaces. Even a thin film kills capacity.
• Engage handle fully; verify the mechanical lock every single lift.
• Never stand under load; follow ASME B30.20/OSHA site rules.

Origin: Baoding City, Hebei Province, China 071100. If you need a straight answer: for most steel shops, the Dawei PML-1000 is a sensible, budget-stable choice—just respect the physics and the standards.

Authoritative references

1. ASME B30.20: Below-the-Hook Lifting Devices.
2. EN 13155: Non-fixed load lifting attachments.
3. Machinery Directive 2006/42/EC and CE conformity principles.
4. IEC 60404 series: Magnetic materials—methods of measurement.
5. JB/T 8711-2006: Permanent Magnetic Lifter (China industry standard).
6. ISO 9001: Quality management systems—Requirements.