Smooth, precise motion in strong magnetic fields
Low-Magnetic Permeability Linear Guide HSR-M3
With the new linear guide HSR-M3, THK introduces a special linear guide that ensures highly precise, stable linear motion over long periods—even in strong magnetic fields.
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Illustration 1 Low-magnetic permeability linear guideHSR3-M3
The linear guide HSR-M3 is based on the proven HSR model, featuring equal load ratings in all directions and mounting dimensions in accordance with the ISO standard for rolling bearings (ISO 12090-1:2011). By using components made of materials with low magnetic permeability, this new model achieves a relative magnetic permeability of 1.02, effectively resisting the effects of magnetic fields.
In addition, the material used for the HSR-M3 model has a hardness of at least 40 HRC, enabling it to support higher loads than the stainless steel alloy SUS316 according to the Japanese Industrial Standard (JIS), which is itself known for its low magnetic permeability.
Illustration 2 Comparison of magnetic permeability between stainless steel alloy SUS316 and the linear guide HSR-M3
Another advantage of the linear guide HSR-M3 is that, unlike carbon steel, the material is not magnetized and therefore has minimal impact on magnetic flux.
Illustration 3 Placement within a magnetic field
With these characteristics, the new HSR-M3 LM model is particularly well-suited for applications in environments with strong magnetic fields, such as MRI (Magnetic Resonance Imaging) machines or related testing equipment.
