Draft Research: Lifting Magnet Types Comparison

Date: 2026-06-23

Candidate Topics Evaluated

1. ASME B30.20 & EN 13155 Compliance Audit Guide: Focuses on safety standards. Too theoretical for direct RFQ conversion, but good for trust.
2. Permanent vs. Electro-Permanent vs. Electromagnetic Lifters: TCO Comparison: Highly relevant for procurement and engineering deciding on plant upgrades. Strong ROI and TCO focus. (Selected)
3. Electro-Permanent Magnets for Automated Plate Handling: Automation focus. Excellent for integrators, but may miss standard distributors.
4. Lifting Magnet Derating Curves: Very engineering-heavy. Partially overlaps with our existing breakaway force checklist.
5. Battery Backup Safety in Electromagnets vs Passive Safety in EPMs: Great safety angle, but narrower scope.

Selected Topic

Permanent vs. Electro-Permanent vs. Electromagnetic Lifters: A Procurement & TCO Guide

• Why it matters: Buyers often look only at capital expenditure (CapEx) instead of Total Cost of Ownership (TCO) and safety risk (battery backups vs passive holding). EPM is a rising standard that bridges the gap.
• Slug: lifting-magnet-types-comparison-tco
• Target Audience: Buyers, procurement teams, distributors, and engineers.

Information Gap (Incremental Value)

Existing pages usually just say "EPM uses electricity only to switch state." This post will quantify the 95% energy savings, compare the maintenance costs (battery replacements, cable wear), define the application boundaries (when to still use permanent or electromagnetic), and provide an 8+ row structured TCO comparison table.

Sources to Cite

1. Holloway Houston Lifting - "Lifting Magnets: Permanent vs Electromagnetic" (https://www.hhilifting.com/en/news/post/lifting-magnets-permanent-vs-electromagnetic-capacity-and-safety-guide)
2. Lenoir-Mec - "Electropermanent Lifting Magnet: Complete Guide 2025" (https://www.lenoir-mec.com/en/2025/09/22/electropermanent-lifting-magnet-complete-guide-2025)
3. Eclipse Magnetics - "The Difference Between Electromagnets & Permanent Magnets" (https://www.eclipsemagnetics.com/resources/guides/difference-between-electromagnet-permanent-magnet)
4. SGM Magnetics - "Electro Permanent Lifting Magnets" (https://www.sgmmagnetics.com/en/products/electro-permanent-lifting-magnets)
5. BSI Knowledge - "BS EN 13155:2020 Crane safety" (https://knowledge.bsigroup.com/products/crane-safety-non-fixed-load-lifting-attachments)

Draft Outline

1. Introduction: The CapEx vs TCO trap in magnetic lifting procurement.
2. Core Technologies Explained (Permanent, Electromagnetic, Electro-Permanent).
3. The TCO & Performance Comparison (8+ row structured table).
4. Application Boundaries (Where each technology wins or fails).
5. Procurement & Engineering Checklist.
6. FAQ.
7. CTA.
8. Sources.