MagSpring
MagSpring products can best be described as "magnetic springs." The term "spring", however, is to be understood to mean that MagSpring components generate a constant force over their entire working range, while the characteristic curve for a typical mechanical spring shows an increase in force with increasing displacement. The generation of force that is independent of the stroke makes MagSprings preferable for ba-lancing weight forces in vertical drive applica-tions.
Mode of Operation
The mode of operation is based on the attractive force of permanent magnets. Accordingly, no energy source (electricity, compressed air, etc.) is needed, so that safety-related applications can also be addressed.  The special design of the flow-guiding components and the magnets translates the strongly non-linear relationship between force and displacement in magnet-iron arrangements into a constant force curve. De-pending on the strength class of the MagSpring, the permanent magnets are either in the stator, in the slider, or in both components. The slider is guided by an integrated plain bearing, so that MagSprings can be used comparably to gas pressure springs in a design.
Linear motors and other direct drives must provide a constant force in vertical orienta-tions, in order to oppose the weight load.Using a MagSpring installed in parallel with the linear motor, this weight load can be passively balanced. The linear motor is then only used for the actual positioning operati-on and dynamic forces, and can therefore be correspondingly smaller in design.
Working Range
In the relaxed state, the slider is approximately centered in the stator, while the working end of the slider extends somewhat out of the end of the stator. Fundamentally, however, both ends of the slider can be used to mount loads. From this rest position, the slider can be pulled or pushed out of the stator in both directions. The force in
Combination with H-Guides
creases from zero to the nominal force within a short stroke length. The working stroke then con-tinues with a constant force. The start position (SP) describes the distance between the working end of the slider and the end of the stator at the beginning of the constant force range.
The above illustration shows a vertical ar-rangement of an H01 linear guide together with a MagSpring. The MagSpring presses upward with a constant force. The weight load is balanced by the MagSpring, and the linear motor thus bears less load.
If the electrical power supply is interrupted, the MagSpring supports the load, or moves it into a safe waiting position.
MagSpring
Constant force [N]Stator mass [g (lb)]
Slider mass [g (lb)]
M01-20x60/50-11      11 75 (0.16)75(0.16)M01-20x60/50-17      17 75 (0.16)75(0.16)M01-20x60/50-22
22
75 (0.16)
75(0.16)
The MagSpring has a constant force, as soon as the slider has been pulled out or pushed by the distance SP. The distance SP is measured between the unmarked slider end and the end of the stator (threaded end).
constant force
Dimensions in mm
MagSpring
Constant force [N]Stator mass [g (lb)]
Slider mass [g (lb)]M01-20x140/130-11      11 180 (0.39)155(0.34)M01-20x140/130-17      17 180 (0.39)155(0.34)M01-20x140/130-22
22
180 (0.39)
155(0.34)
MagSpring
Constant force [N]Stator mass [g (lb)]
Slider mass [g (lb)]M01-20x220/210-11      11 285 (0.62)220(0.49)M01-20x220/210-17      17 285 (0.62)220(0.49)M01-20x220/210-22
22
285 (0.62)
220(0.49)
The MagSpring has a constant force, as soon as the slider has been pulled out or pushed by the distance SP. The distance SP is measured between the unmarked slider end and the end of the stator (threaded end).
The MagSpring has a constant force, as soon as the slider has been pulled out or pushed by the distance SP. The distance SP is measured between the unmarked slider end and the end of the stator (threaded end).
Dimensions in mm
Dimensions in mm
Dimensions in mm The MagSpring has a constant force, as soon as the slider has been pulled out or pushed by the distance SP.
The distance SP is measured between the unmarked slider end and the end of the stator (threaded end).
MagSpring Constant force [N]Stator mass [g (lb)]Slider mass [g (lb)]
M01-20x300/290-11      11 388 (0.86)280(0.61)
M01-20x300/290-17      17 388 (0.86)280(0.61)
M01-20x300/290-22      22 388 (0.86)280(0.61)
Ordering Information
M01-20x60/50MagSpring M01-20 with 50mm stroke
Stator MS01-20x60MagSpring Stator 20x60mm0250-2200
Slider ML01-12x130/80-10Slider for MagSpring M01-20x60/50, Force 11N0250-2300pushed
ML01-12x130/80-15Slider for MagSpring M01-20x60/50, Force 17N0250-2308
ML01-12x130/80-20Slider for MagSpring M01-20x60/50, Force 22N0250-2301 M01-20x140/130MagSpring M01-20 with 130mm stroke
Stator MS01-20x140MagSpring Stator 20x140mm0250-2201
Slider ML01-12x210/160-10Slider for MagSpring M01-20x140/130, Force 11N0250-2302
ML01-12x210/160-15Slider for MagSpring M01-20x140/130, Force 17N0250-2309
ML01-12x210/160-20Slider for MagSpring M01-20x140/130, Force 22N0250-2303 M01-20x220/210MagSpring M01-20 with 210mm stroke
Stator MS01-20x220MagSpring Stator 20x220mm0250-2202
Slider ML01-12x290/240-10Slider for MagSpring M01-20x220/210, Force 11N0250-2304
ML01-12x290/240-15Slider for MagSpring M01-20x220/210, Force 17N0250-2310
ML01-12x290/240-20Slider for MagSpring M01-20x220/210, Force 22N0250-2305 M01-20x300/290MagSpring M01-20 with 290mm stroke
Stator MS01-20x300MagSpring Stator 20x300mm0250-2207
Slider ML01-12x370/320-10Slider for MagSpring M01-20x300/290, Force 11N0250-2311
ML01-12x370/320-15Slider for MagSpring M01-20x300/290, Force 17N0250-2312
ML01-12x370/320-20Slider for MagSpring M01-20x300/290, Force 22N0250-2313

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