Heavy Duty Hook – Overview

For extreme holding requirements in steel fabrication, mining equipment, and heavy machinery assembly, our heavy duty hook delivers a verified pull force of 150 kg to 600 kg (330–1320 lb) using dual‑magnet or oversized single‑magnet circuits. Unlike consumer‑grade magnetic hooks, this heavy duty hook features a 5mm thick reinforced steel cup, a forged carbon steel hook with welded base, and either recessed M12 or protruding M16 threads. Designed for repeated shock loads and outdoor exposure, every heavy duty hook is certified under IATF16949, ISO9001, REACH, RoHS, and EN71/CE/CP65/CHCC standards. 30 years of magnetic lifting expertise, full‑chain manufacturing, and 100% pull‑force verification before shipping.

Product Details – Heavy Duty Hook

The heavy duty hook uses an optimized magnetic circuit: either a single large‑diameter N52 neodymium magnet (≥50mm dia.) or two stacked N50 magnets to increase total flux. The magnet is fully potted inside a deep‑drawn or machined steel cup (wall thickness 3.5–5mm) using high‑viscosity epoxy to resist shear forces up to 300% of rated pull. The hook itself is forged from 4140 alloy steel, heat‑treated to HRC 38–42, and coated with black oxide or zinc‑nickel plating. A rubber bumper is optional to prevent surface marring on painted equipment. Unlike light‑duty variants, this heavy duty hook maintains ≥90% pull after 50,000 attachment‑detachment cycles. It also offers an operating temperature option up to 150°C using SmCo magnets.

Technical Specifications (Heavy Duty Series)

Model	Pull Force (kg/lb)	Magnet Grade	Cup OD (mm)	Thread Size	Max Temp
HD‑150	150 kg / 330 lb	N50 (single)	75	M10 recessed	80°C
HD‑300	300 kg / 660 lb	N52 (single)	100	M12 recessed	80°C
HD‑450	450 kg / 990 lb	Dual N50	120	M16 protruding	100°C (150°C optional)
HD‑600	600 kg / 1320 lb	Dual N52SH	150	M20 protruding	150°C

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Key Features & Applications – Heavy Duty Hook

Safety factor 3:1 – each heavy duty hook is tested to 300% of rated pull before shipment, with certification report.

Impact‑resistant cup – 5mm thick steel with welded base, no thread stripping under vibration.

IP67 option – fully encapsulated with epoxy for underwater or dusty environments (cement plants, mines).

Typical uses – lifting jigs in welding lines, magnetic anchors for temporary guardrails, heavy pipe suspension, shipyard staging, and magnetic press dies.

Why Choose This Heavy Duty Hook?

Raw material to finished hook: 100% in‑house – magnet sintering, steel cup forging, hook forging, plating.
All heavy duty hooks undergo magnetic flux measurement (Hall probe) and pull test on a 50mm thick steel plate.
20% higher pull than standard magnetic hooks of same diameter due to optimized pole shape.
Customizable hook length (50–200mm), angle (0°, 90°), or replaceable sling ring.
ISO 9001:2015 certified facility, with EN1090 weld certification for the hook assembly.

Packaging & Shipping – Heavy Duty Hooks

Each heavy duty hook is wrapped in corrosion‑inhibiting VCI paper, then foam‑cradled in a plywood crate. Multiple crates are banded on a galvanized pallet. We provide magnetic field warning labels and handling instructions. Shipping: FOB Shanghai by sea, or air freight for urgent orders. All dangerous goods documentation (UN2807, MSDS) supplied.