WOLFRAM SYSTEM MODELER
FAG_N_1914_KSPRoller bearing parameterized with values corresponding to FAG N1914KSP |
 |
Diagram
Wolfram Language
In[1]:=
SystemModel["RotatingMachinery.RollingBearings.RollerBearings.FAG_N_1914_KSP"]
Out[1]:=
Information
FAG N1914 KSP
By following this procedure, it is possible to parametrize around 100 KSP cylindrical roller bearings. This specific example is parameterized to model FAG N1914 KSP.
Catalog Parameters
This example is taken from the FAG Catalog [1], called N1914K.M1.SP (Super Precision).
Figure 1: FAG N1914 KSP bearing catalog parameters.
As seen in the catalog above, it is not possible to find all corresponding parameters. The parameters that are not listed in the catalog can be found in the CAD file FAG Drawing.
Figure 2: FAG N1914 KSP CAD, diameter measurements.
Bearing inner ring wall outer diameter, d1, and outer diameter for roller can be measured from the CAD file, as seen above.
System Parameters
In the same catalog [2], the radial clearance limits are listed,
Figure 3: Radial internal clearance of FAG N1914 KSP.
The axial clearance in the FAG N1914 KSP has been set it to 0, since there is no clearance between the outer ring and rollers. This is simply an implementation decision. However, it is recommended to set the radial clearance to -0.001mm to make the simulations more robust. Without this setting, the simulations may generate numerous events as they try to determine whether or not contact is occurring.
Note that if you have a system where the bearing-related vibrations are not desired, these values can be set as even larger negative values. This type of adjustment enables you to have preloaded bearings. The axial clearance in FAG N1914 KSP has been set to 0, since its outer ring and rollers have no clearance in between.
Other Parameters
At the last, for the other parameters, you can look at the CAD file given on FAG Drawing.
Figure 4: FAG N1914 KSP CAD, roller measurements.
The roller diameter (7.1mm), roller length (7.3mm), roller number (32) and wall width (4 mm) can be measured from this CAD file.
References for Roller Bearing Parameter Values
[1] FAG. Super Precision Bearings. "Super Precision Cylindrical Roller Bearings." 2002: 86. https://www.fagbearing.cc/PDF-bearings/FAG-Bearings-PDF.pdf.
[2] FAG. Super Precision Bearings. "Super Precision Cylindrical Roller Bearings." 2002: 35. https://www.fagbearing.cc/PDF-bearings/FAG-Bearings-PDF.pdf.
Parameters (30)
| useOuterRingFlangeSupport |
Value: false Type: Boolean Description: Use the build in Fixed or connect to an external flange support |
|---|---|
| useShaftFlangeSupport |
Value: true Type: Boolean Description: Use if the rotating shaft (inner ring) is connected to an external component |
| d |
Value: 0.075 Type: Diameter (m) Description: Bearing inner (bore) diameter |
| D |
Value: 0.1 Type: Diameter (m) Description: Bearing outer diameter |
| B |
Value: 0.016 Type: Distance (m) Description: Bearing width |
| d1 |
Value: 0.0804 Type: Diameter (m) Description: Bearing innerring wall outer diamter |
| D1 |
Value: 0.0922 Type: Diameter (m) Description: Outer diameter for roller |
| F |
Value: 0.07751 Type: Diameter (m) Description: Inner diameter for roller |
| s |
Value: 0.0023 Type: Length (m) Description: Cage clearance |
| clearance_z |
Value: 0 Type: Length (m) Description: Clearance in z direction |
| clearance_dr |
Value: -1e-06 Type: Length (m) Description: clearence in radial direction |
| dRoller |
Value: 0.0071 Type: Diameter (m) Description: Roller diameter |
| dLength |
Value: 0.0073 Type: Distance (m) Description: Roller length |
| wallWidth |
Value: 0.004 Type: Distance (m) Description: Wall thickness of outer ring |
| numberOfRollers |
Value: 32 Type: Integer Description: Number of rollers |
| useShaftInitiated |
Value: false Type: Boolean Description: true = Shaft will be initiated. Set this to true at left side if no powersource is used |
| torsionalDampingConstant |
Value: 10 Type: RotationalDampingConstant (N⋅m⋅s/rad) Description: Damping constant |
| verticalDampingConstant |
Value: 10 Type: TranslationalDampingConstant (N⋅s/m) Description: Damping constant |
| horisontalDampingConstant |
Value: 10 Type: TranslationalDampingConstant (N⋅s/m) Description: Damping constant |
| outerRingDefect |
Value: false Type: Boolean Description: If an outer ring defect exists |
| addForceOuterRingDefectAmplitude |
Value: 0 Type: Force (N) Description: Size of outer ring defect. Used if outerRingDefect = true |
| axialPosition |
Value: 0 Type: Length (m) Description: Axial position in z direction (used if useOuterRingFlangeSupport = false) |
| horisontalPosition |
Value: 0 Type: Length (m) Description: Horisontal position in x direction (used if useOuterRingFlangeSupport = false) |
| verticalPosition |
Value: 0 Type: Length (m) Description: Vertical position in y direction (used if useOuterRingFlangeSupport = false) |
| animateOuterRing |
Value: false Type: Boolean Description: Animate outer ring |
| animateInnerRing |
Value: true Type: Boolean Description: Animate inner ring |
| animateCage |
Value: true Type: Boolean Description: Animate cage |
| animateRollers |
Value: true Type: Boolean Description: Animate rollers |
| animateRollerForce |
Value: true Type: Boolean Description: Animate roller forces |
| animateOuterRingForce |
Value: false Type: Boolean Description: Animate outer ring forces |
Connectors (3)
 |
frame_outer |
Type: Frame_a Description: Coordinate system fixed to the component with one cut-force and cut-torque (filled rectangular icon) |
|---|---|---|
 |
frame_b |
Type: Frame_b Description: Coordinate system fixed to the component with one cut-force and cut-torque (non-filled rectangular icon) |
|
frame_a |
Type: Frame_a Description: Coordinate system fixed to the component with one cut-force and cut-torque (filled rectangular icon) |
Components (7)
 |
rollerAssembly |
Type: RollerAssembly Description: Model of an assembly of rollers, containing RollerPart components |
|---|---|---|
 |
outerRing |
Type: OuterRing Description: Model of the outer ring of an SKF roller bearing |
 |
innerRing |
Type: InnerRing Description: Model of an inner ring of an SKF roller bearing |
 |
fixedRotation |
Type: FixedRotation Description: Fixed translation followed by a fixed rotation of frame_b with respect to frame_a |
 |
shaftInitiated |
Type: ShaftInitiated Description: The main purpose for this component is to initiate a shaft supported with rolling bearings |
 |
fixedOuter |
Type: Fixed Description: Frame fixed in the world frame at a given position |
 |
cage |
Type: Cage Description: Model of a cage to be used in roller bearings |
Used in Examples (1)
 |
RotatingMachinery.Examples.BearingAnalysis Study of individual roller forces |