Yale TPM Permanent Lifting Magnet

Permanent Lifting Magnet from Yale

The Yale TPM series of load lifting magnets is available in the following capacities: 100kg, 300kg, 500kg, 800kg, 1000kg & 2000kg.

Yale TPM load lifting magnets are ideal tools for easy, quick and thus economical transport of heavy objects made from ferromagnetic material.

Capacities and Reductions

The selection of the appropriate magnet model should be made under consideration of the varying conditions of the contact surface, kind of material alloy and plate thickness (see below and 'Capacity Reductions' Tab above).

Note: In order to achieve a maximum capacity, the contact surface should be bright and free from dirt, oil, grease, scale, corrosion and paint, etc.

Magnet Features

• Typical operating areas are workshops and warehouses, loading and unloading of machines, as well as the construction of jigs and fixtures.
• Small dimensions of the units provide a wide number of additional applications.
• The load is not affected mechanically, which allows lifting of flat as well as round material.
• The efficient magnet body provides a strong lifting capacity at low dead weight.
• The permanent magnets do not require electric energy and will present only minor residual magnetism after switching off.
• Switching ON and OFF operations are easily accomplished by turning a locking lever.
• In the activated condition, the hand lever will be safely locked and thus prevent unintended demagnetising.

Dimensions & Specifications

Model	Flat Material			Round Materials			Test Load (kg)	Dimensions (mm)				Weight (kg)
	Capacity Max **	Thickness min. (mm)	Length max. (mm)	Capacity Max **	dia. (mm)	Length max. (mm)		A	B	C	D
TPM 0.1	100	14	2000	50	40-300	2000	300	122	69	185	160	6.3
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
TPM 2.0	2000	55	3500	1000	100-400	3500	6000	392	196	420	450	125
TPM 3.0	3000	65	3500	1500	200-500	3500	9000	497	220	453	600	195

**Maximum lifting capacity is achieved by using mild steels with the noted minimum thickness.
Mild steel St37 - Fe 360 to BS EN 10 025 1990 (DIN 17100).

Capacity Reductions

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 SWL:
Mild steel 500g
Cast iron 500kg x 0.55 = 275kgs