MPI Permanent Lifting Magnets

Overview

MPI Permanent Lifting Magnets hang from a hoist or crane and lift flat and round steel with no power supply. High-energy neodymium magnets are switched on and off with a one-hand lever. Six models carry working load limits from 330 to 4,409 lb on flat material and 143 to 2,204 lb on round material, at a 3:1 safety factor.

Key Features

• No power required
  • Permanent neodymium magnets hold the load with no electricity or batteries, so the lifter keeps holding if power is lost.
• One-hand Easy-Switch
  • The Easy-Switch lever turns the magnet on and off with one hand. A safety latch keeps it from being switched off by accident during a lift.
• 3:1 safety factor, tested
  • Every lifter is individually tested to its load specification, and the results are recorded by serial number. The tear-off test uses an air gap to simulate real operating conditions.
• Flat and round stock
  • Each model has separate working load limits for flat plate and for round bar, pipe and tube, with a stated diameter range.
• Welded construction
  • A stainless steel lifting eye is welded to the body. The only fasteners are two recessed handle screws, and none of them carry the load.
• Five-year warranty
  • MPI covers the magnetic system for five years. The lifters meet ANSI/ASME B30.20, and MPI offers an annual re-certification service.

Product Line / Models

MPI Permanent Lifting Magnet models (W x L x H, lifter weight, working load limit on flat and round material):

• LM-0150-REN – 2.4 x 3.7 x 4.7 in., 6.6 lb. Flat 330 lb, round 143 lb (2–4 in. diameter). Tested to 992 lb.
• LM-0300-REN – 3.9 x 6 x 7.1 in., 22.1 lb. Flat 661 lb, round 330 lb (2.4–7.8 in. diameter). Tested to 1,984 lb.
• LM-0600-REN – 4.7 x 9.7 x 7.1 in., 46.3 lb. Flat 1,322 lb, round 661 lb (2.5–10.6 in. diameter). Tested to 3,968 lb.
• LM-1000-REN – 5.8 x 12.1 x 9.3 in., 88.2 lb. Flat 2,204 lb, round 1,102 lb (4–11.8 in. diameter). Tested to 7,054 lb.
• LM-1500-REN – 6.5 x 14.7 x 10.8 in., 152.1 lb. Flat 3,306 lb, round 1,653 lb (6–13.7 in. diameter). Tested to 10,361 lb.
• LM-2000-REN – 6.5 x 18.8 x 10.8 in., 198.4 lb. Flat 4,409 lb, round 2,204 lb (6–13.7 in. diameter). Tested to 13,668 lb.
• PCM-GP250 Permanent Crane Magnet – for sheet and plate. 7.8 x 11.3 x 1.6 in., 21.5 lb. Horizontal limit 551 lb, vertical limit 176 lb, 4:1 safety factor. Handles single sheets from 0.12 in. thick and tilts them between horizontal and vertical.

Applications & Benefits

• Plate and sheet: Lifts flat plate, sheet and blanks in fabrication shops, weld booths and steel service centers.
• Round bar, pipe and tube: Each model is rated for round material within its stated diameter range.
• Tool room die handling: Used with a hoist for die handling and die separation, and for moving steel workpieces and tools.
• Profiles and structural sections: Handles profiled sections, beams and semi-finished steel in warehouses and on job sites.
• Tilting sheets: The PCM-GP250 turns sheets and plates from horizontal to vertical and back.

How to Choose the Right MPI Permanent Lifting Magnet

1. Find the heaviest load you will lift and pick a model whose working load limit covers it. The limits already include the 3:1 safety factor.
2. For round bar, pipe or tube, use the round rating (about half the flat rating) and check that the diameter falls within the model's range.
3. Check material thickness and surface finish. MPI rates capacity by size and surface finish, and thin or rough material holds less.
4. Keep the working temperature at or below 176°F (80°C).
5. For single sheets or tilting plates between horizontal and vertical, look at the PCM-GP250 Permanent Crane Magnet.
6. Ask about options: adjustable pole shoes, safety lock handles, custom lifting eyes, carrying cases and test certificates.

Why MPI Permanent Lifting Magnets Are Trusted

• Tested one by one: Each lifter is load tested with an air gap, and the result is recorded by serial number.
• Built to the standard: The lifters meet ANSI/ASME B30.20 for below-the-hook lifting devices.
• Backed by MPI: A five-year warranty on the magnetic system, plus annual re-certification service from MPI.

Contact & Ordering

Need help picking the right model or getting a quote? Provide these details:

• Material and shape (plate, sheet, round bar, pipe, profile)
• Heaviest load weight
• Load dimensions: thickness, or diameter for round stock
• Surface condition (machined, mill scale, rough, coated)
• Working temperature
• Number of lifters and whether test certificates are needed
• Contact PRI to discuss specs, lead times, and installation support.