TPM Permanent Lifting Magnets

50 - 1000kg

Lifting magnets made from ferro-magnetic material

PRODUCT APPLICATIONS

  • TPM permanent lifting magnets are ideal tools for easy, quick and economical transport of heavy objects made from ferro-magnetic material. Typical operating areas are workshops and warehouses, loading and unloading of machines as well as construction of jigs and fixtures.

Factors that reduce the magnetic clamping force:

Air gap: High magnetic forces created by the TPM allow the magnet to clamp components through the air gap, however, air gaps will reduce the magnetic performance as they provide a barrier between the contact surfaces. Air gaps occur in a number of different ways such as paint, dust and heavy mill scale. Poorly machined surfaces also constitute an air gap. Please down rate the magnet capacity in accordance with the adhesive force/air gap diagram below.

Material thickness: If the TPM is used to lift plates thinner than the recommended minimum thickness, the clamping forces will be significantly reduced. Performance curves can be identified in conjunction with the adhesive force/flat thickness diagram below:

Contact area: Full lifting capacity can only be achieved when the magnet has full contact area with the component being lifted. If the contact surface has holes in or is uneven then the performance will be affected accordingly. Always carry out a trial lift in these circumstances to establish correct lifting before transporting the load.

Material type: Certain materials have different abilities to carry magnetism. For materials other than mild steel a reduction factor must be applied in order to calculate the effective clamping force.

Typical values:
Ferrous alloy steels 0.8
High carbon steels 0.7
Cast iron 0.55

Examples of reduced WLL:
Mild steel 500g
Cast iron 500kg x 0.55 = 275kgs

Working Load Limits (WLL)

Model Flat material Round material Tear off
force
kg
Dimensions Weight
kg
Maximum capacity WLL
kg**
Minimum thickness to obtain max. WLL mm** Maximum
length
of material
mm
Maximum
capacity
WLL
kg**
Diameter
mm
Maximum
length
of material
mm
A
 
mm
B
 
mm
C
 
mm
D
 
mm
TPM 0.1 100 14 2000 50 40-300 2000 300 122 69 185 160 5.3
TPM 0.3 300 20 2500 150 60-300 2500 900 192 95 225 250 13.5
TPM 0.5 500 24 3000 250 60-400 3000 1500 232 120 270 250 27.5
TPM 0.8 800 34 3500 400 60-400 3500 2400 302 154 320 450 52
TPM 1.0 1000 40 3500 500 80-400 3500 3000 332 154 320 450 57
Made in Britain