Product Information

STF Models Specifications

STF Models

[Specifications]

ModelTorqueMisalignmentMax. rotation speed [min-1Torsional stiffness [N・m/rad]Moment of inertia [kg・m2Mass [kg]
Nominal [N・m]Max. [mm]Parallel [mm]Angular [°]Axial [mm]
STF-013SA10.510.151.5±0.210000150.11×10-60.004
STF-016SA1120.151.5±0.210000270.31×10-60.009
STF-019SA11.530.151.5±0.210000380.70×10-60.013
STF-024SA12.550.151.5±0.2100001271.89×10-60.023
STF-029SA1480.21.5±0.3100002014.40×10-60.034
STF-034SA16120.21.5±0.3100003719.77×10-60.056
STF-039SA18.5170.21.5±0.31000048521.13×10-60.091
STF-044SA115300.21.5±0.31000099637.34×10-60.12
STF-056SA130600.21.5±0.3100002075125.5×10-60.251

*Check the Max. Torque for the Shaft Diameter list as there may be limitations on the standard and maximum torque caused by the holding power of the coupling shaft section.

*The max. rotation speed values do not take into account dynamic balance.

*The static torsional stiff ness values are analysis values for the element taken at a temperature of 20°C at maximum bore diameter.

*The moment of inertia and mass are measured for the maximum bore diameter.

[Dimensions]

Modeld1, d2[mm]D[mm]L[mm]LF[mm]S[mm]A[mm]C[mm]M
Quantity-Nominal dia.
Tightening torque
[N・m]
Min.Max.
STF-013SA1351318663.921-M1.60.23~0.28
STF-016SA13616227.574.82.51-M20.4~0.5
STF-019SA1381925975.8(6)3.151-M2.5(M2)1.0~1.1(0.4~0.5)
STF-024SA15102427998.73.151-M2.51.0~1.1
STF-029SA151429301010113.31-M2.51.0~1.1
STF-034SA15163434121012.53.751-M31.5~1.9
STF-039SA1619394115.510144.51-M43.4~4.1
STF-044SA1824444815.517174.51-M43.4~4.1
STF-056SA1830566020.5192261-M57.0~8.5

*The nominal diameter for the clamp bolt M is equal to the quantity - the nominal diameter of the screw, where the quantity is for a hub on one side.

*The values in ( ) of the STF-019, d1 or d2 is the value in the case of ø8mm.

*The escape in the internal diameter of the element is equal to dimension d2 (large diameter) plus ø0.9 mm.

* The rated dimension tolerance for countershafts is h7 class.

[Standard bore diameter]

ModelStandard bore diameter d1, d2 [mm]
34566.357899.52510111213141516171819202224252830
STF-013SA1
STF-016SA1
STF-019SA1
STF-024SA1
STF-029SA1
STF-034SA1
STF-039SA1
STF-044SA1
STF-056SA1

*The bore diameters in the boxes marked by [●] are used as standard bore diameters.

*Check the table for information on max. torque for the shaft diameter as there may be limitations on the standard and maximum torque determined by the holding power of the coupling shaft section depending on the bore diameter used.

[Max. torque for the shaft diameter]

ModelStandard bore diameter[mm] and max. torque for the shaft diameter[N・m]
34566.357899.52510111213141516171819202224252830
STF-013SA10.100.250.40
STF-016SA10.50.60.70.8
STF-019SA10.81.21.61.91.92.30.8
STF-024SA11.62.12.12.63.34.04.04.7
STF-029SA11.82.22.22.73.44.14.14.85.56.37.88.0
STF-034SA12.73.03.03.34.04.84.85.66.57.89.010.712.012.0
STF-039SA13.43.44.05.06.16.17.18.29.310.411.512.814.015.316.617.0
STF-044SA16.08.38.39.811.312.814.316.017.318.820.321.823.524.827.830.0
STF-056SA110.711.911.913.414.916.317.818.720.822.223.725.227.032.041.952.056.360.060.0

*Check the this list as there may be limitations on the standard and maximum torque caused by the holding power of the coupling shaft section.

*The Max. limit-received torque is a torque value of the small diameter side (d1). However, only in the case that STF-019SA1's d1 or d2 is φ8mm does the clamp bolt size down, so the limiting value is 0.8N・m. Please keep this in mind.

[STF-019SA1 Standard bore diameter and Max. torque]

d1-d2max. torque
[N・m]
d1-d2max. torque
[N・m]
d1-d2max. torque
[N・m]
d1-d2max. torque
[N・m]
d1-d2max. torque
[N・m]
d1-d2max. torque
[N・m]
d1-d2max. torque
[N・m]
3B-3B0.83B-4B0.83B-5B0.83B-6B0.83B-6.35B0.83B-7B0.83B-8B0.8
4B-4B1.24B-5B1.24B-6B1.24B-6.35B1.24B-7B1.24B-8B0.8
5B-5B1.65B-6B1.65B-6.35B1.65B-7B1.65B-8B0.8
6B-6B1.96B-6.35B1.96B-7B1.96B-8B0.8
6.35B-6.35B1.96.35B-7B1.96.35B-8B0.8
7B-7B2.37B-8B0.8
8B-8B0.8

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