The tables below describes the symbol nomenclature you can use when calculating your own equations/variables. Please note:.


  • All labels are case sensitive
  • Values returned are in metric units
  • There are many other available



Length

FreeLength

Free length

SolidLength

Solid length

MinimumLengthStatic

Minimum permissible working length (static)

MinimumLengthDynamic

Minimum permissible working length (dynamic)


Load

SolidLoad

Solid load


Stress

SolidStress

Solid stress (either uncorrected or corrected static stress, depending on the current design standard)

SolidStressUncorrected

Solid stress (specified as uncorrected)

SolidStressCorrected

Solid stress (specified as corrected)

StressCorrectionFactor

Stress correction factor


Dimensions

WireDiameter

Wire diameter

CoilDiameter

Specified coil diameter - outside, inside or mean, whichever was used as the input

InsideDiameter

Inside coil diameter

OutsideDiameter

Outside coil diameter

MeanCoilDiameter

Mean coil diameter

SpringPitch

Pitch


Other factors

TotalCoils

Total coils

ActiveCoils

Active coils

DeadCoils

Dead coils

SpringIndex

Spring index

SpringRate

Spring rate

WireLength

Wire length

SpringWeight

Mass of single spring

SpringWeight100

Mass of 100 springs

SpringWeight1000

Mass of 1000 springs


Material properties

MaterialName

Material specification

MaterialNameAndGrade

Material specification including currently selected grade

RigidityModulus

Rigidity modulus

YoungsModulus

Young's modulus

Density

Density


Working positions

WorkingLength1

WorkingLength2


or


OperatingLength,X

Length at position 1

Length at position 2


or


Length at position X

WorkingLoad1

WorkingLoad2


or


OperatingLength,X

Load at position 1

Load at position 2


or


Load at position X

OperatingDeflection,X

Deflection at position X

OperatingStressUncorrected,X

Uncorrected stress at position X

OperatingStressCorrected

Corrected stress at position X

OperatingODExpansion

OD expansion (increase in diameter) at position X


Tolerances


Note: the required tolerance grade must be specified as the number X. If this is zero, the currently selected tolerance grade will be used (if there is one). Values 1, 2 or 3 will be that grade (if available), and 4 means Specified tolerance. For load tolerances, you must also specify the operating position number Y, separated by a semi-colon.

OperatingLoadToleranceByGrade,X;Y

Load tolerance at position Y, for tolerance grade X

FreeLengthToleranceByGrade,X

Free length tolerance for grade X

ODToleranceByGrade,X

Coil diameter tolerance for grade X

RateToleranceByGrade,X

Spring rate tolerance for grade X

SquarenessToleranceByGrade,X

Squareness tolerance for grade X

ParallelismToleranceByGrade,X

Parallelism tolerance for grade X

CurrentToleranceGradeNum

The grade number of the currently selected tolerance, typically 1-3, or 4 for Specified