Product Information

Options of SFC Models

Tapered shaft supported Allows coupling clamping hub when a taper adapter is mounted on the tapered shaft of a servo motor.

SFC SA2

Specifications

ModelRated torque [N·m]MisalignmentMax. rotation speed [min-1]Torsional stiffness [N·m/rad]Axial stiffness [N/mm]TypeMoment of inertia[kg·m2]Mass [kg]
Parallel [mm]Angular [°]Axial [mm]
SFC-040SA2-□B-11BC120.021±0.3100002000080B26.58×10-60.131
C33.28×10-60.146
SFC-050SA2-□B-11BC250.021±0.4100003200048B82.91×10-60.240
C103.5×10-60.258
SFC-050SA2-□B-14BC250.021±0.4100003200048B88.72×10-60.271
C111.5×10-60.301
SFC-050SA2-□B-16BC250.021±0.4100003200048B95.44×10-60.309
C118.2×10-60.338
SFC-055SA2-□B-14BC400.021±0.42100005000043C201.1×10-60.409
SFC-055SA2-□B-16BC400.021±0.42100005000043C207.8×10-60.446
SFC-060SA2-□B-16BC600.021±0.45100007000076.4B228.7×10-60.475
C287.8×10-60.517

* Types B / C are automatically specified by Miki Pulley according to the bore diameter you select, and cannot be specified by the customer.

* Check the "Standard Bore Diameters" as rated torque may be restricted by the holding power of the shaft connection component.

* Max. rotation speed does not take into account dynamic balance.

* Torsional stiffness values given are measured values for the element alone.

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

Dimensions

 

Unit [mm]
Modeld2WTWALAdADALLDLLFCA1A2M
SFC-040SA2-□B-11BC11412.21816172244443415.54.511171-M4
SFC-050SA2-□B-11BC11412.21816172248.45643.420.5614.5221-M5
SFC-050SA2-□B-14BC14415.12419222853.45643.420.5614.5221-M5
SFC-050SA2-□B-16BC16517.32429263063.45643.420.5614.5221-M5
SFC-055SA2-□B-14BC14415.12419222856.66350.6247.75-231-M6
SFC-055SA2-□B-16BC16517.32429263066.66350.6247.75-231-M6
SFC-060SA2-□B-16BC16517.32429263069.66853.625.27.7517.526.51-M6

* For other dimensions, see dimensions for single element type SFC SA2.

SFC DA2

Specifications

ModelRated torque [N·m]MisalignmentMax. rotation speed [min-1]Torsional stiffness [N·m/rad]Axial stiffness [N/mm]TypeMoment of inertia[kg·m2]Mass [kg]
Parallel [mm]Angular [°]Axial [mm]
SFC-040DA2-□B-11BC120.241(On one side)±0.6100001000040B39.42×10-60.180
C46.12×10-60.195
SFC-050DA2-□B-11BC250.281 (On one side)±0.8100001600024B125.5×10-60.331
C146.1×10-60.349
SFC-050DA2-□B-14BC250.281 (On one side)±0.8100001600024B131.1×10-60.362
C154.1×10-60.392
SFC-050DA2-□B-16BC250.281 (On one side)±0.8100001600024B138.1×10-60.400
C160.8×10-60.430
SFC-055DA2-□B-14BC400.311 (On one side)±0.84100002500021.5C274.0×10-60.530
SFC-055DA2-□B-16BC400.311 (On one side)±0.84100002500021.5C280.5×10-60.567
SFC-060DA2-□B-16BC600.341 (On one side)±0.9100003500038.2B339.4×10-60.638
C398.5×10-60.681

* Types B / C are automatically specified by Miki Pulley according to the bore diameter you select, and cannot be specified by the customer.

* Check the "Standard Bore Diameters" as rated torque may be restricted by the holding power of the shaft connection component.

* Max. rotation speed does not take into account dynamic balance.

* Torsional stiffness values given are measured values for the element alone.

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

Dimensions

Unit [mm]
Modeld2WTWALAdADALLDLLFCA1A2M
SFC-040DA2-□B-11BC11412.21816172258444815.54.511171-M4
SFC-050DA2-□B-11BC11412.21816172264.85659.820.5614.5221-M5
SFC-050DA2-□B-14BC14415.12419222869.85659.820.5614.5221-M5
SFC-050DA2-□B-16BC16517.32429263079.85659.820.5614.5221-M5
SFC-055DA2-□B-14BC14415.12419222874.46368.7247.75-231-M6
SFC-055DA2-□B-16BC16517.32429263084.76368.7247.75-231-M6
SFC-060DA2-□B-16BC16517.32429263089.36873.325.27.7517.526.51-M6

* For other "Specifications" and "Dimensions", see "Specifications" and "Dimensions" for double element type SFC DA2.

For length-specifi ed special order parts SFC DA2 couplings can be made in specific lengths that match the distance between shafts by changing the length of the spacer. Specify the length in 1 mm units.

SFC DA2

Specifications

* The moment of inertia and mass are measured for the maximum bore diameter. * See "Specifications" for SFC DA2 for stiffness values.
ModelRated torque [N·m]MisalignmentMax. rotation speed [min-1]TypeMoment of inertia[kg·m2]Mass [kg]
Parallel [mm] Min. LParallel [mm] Max. LAngular [°]Axial [mm]
Min. LMax. LMin. LMax. L
SFC-005DA20.60.030.200.5 (On one side)±0.110000C0.33×10-60.62×10-60.0090.017
SFC-010DA210.080.441 (On one side)±0.210000C0.72×10-61.38×10-60.0140.026
SFC-020DA220.100.461 (On one side)±0.3310000C3.02×10-65.30×10-60.0310.054
SFC-025DA240.090.461 (On one side)±0.3810000C4.55×10-67.95×10-60.0360.061
SFC-030DA250.110.481 (On one side)±0.410000A6.09×10-612.80×10-60.0460.085
B8.11×10-614.82×10-60.0530.091
C10.22×10-616.93×10-60.0610.099
SFC-035DA2100.150.541 (On one side)±0.510000C23.85×10-635.97×10-60.1080.161
SFC-040DA2120.150.541 (On one side)±0.610000A25.06×10-644.76×10-60.1070.174
B30.89×10-650.62×10-60.1160.182
C37.58×10-657.31×10-60.1300.197
SFC-050DA2250.160.631 (On one side)±0.810000A77.42×10-6144.3×10-60.2050.347
B97.97×10-6164.8×10-60.2250.365
C120.8×10-6187.6×10-60.2520.394
SFC-055DA2400.160.601 (On one side)±0.8410000C226.8×10-6325.0×10-60.3780.538
SFC-060DA2600.190.631 (On one side)±0.910000A210.8×10-6340.1×10-60.3820.567
B269.9×10-6399.2×10-60.4240.609
C333.5×10-6462.8×10-60.4840.669

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

* Check the "Standard Bore Diameters" for SFC DA2 as there may be limitations on the rated torque caused by the holding power of the coupling shaft section.

* Max. rotation speed does not take into account dynamic balance.

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

* See "Specifications" for SFC DA2 for stiffness values.

Dimensions

Unit [mm]
Modeld1*1d2*1DNLLFSA1A2Cd3KMTightening torque [N·m]Type
Min.Max.Min.Max.Std.Min.Max.
SFC-005DA2363616--23.221407.851--4.82.56.56.51-M20.4 to 0.5C
SFC-010DA2383819--25.924459.151.05--5.8*23.158.58.51-M2.5*31.0 to 1.1*3C
SFC-020DA241041126--32.3295010.751.65--9.53.310.610.61-M2.51.0 to 1.1C
SFC-025DA251451429--32.8295010.751.9--113.31514.51-M2.51.0 to 1.1C
SFC-030DA25105103421.637.8345512.42.58--3.751514.51-M31.5 to 1.9A
>101612.5B
>1014----C
SFC-035DA261661939--48436515.53--144.517171-M43.4 to 4.1C
SFC-040DA28158154429.648436515.5311--4.52019.51-M43.4 to 4.1A
>152417B
>1519----C
SFC-050DA2819819563859.8538020.52.414.5--626261-M57.0 to 8.5A
>193022B
>1925----C
SFC-055DA21030103063--68.76085242.6--237.7531311-M614 to 15C
SFC-060DA211241124684673.3659025.23.217.5--7.7531311-M614 to 15A
>243526.5B
>2430----C

* Types A / B / C are automatically specified by Miki Pulley according to the combination of bore diameters you select, and cannot be specified by the customer.

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

* The figures in parentheses ( ) for the SFC-010 are the values when d1 or d2 is ø8 mm.

* Compatible lengths L range from the minimum L dimension to the maximum L dimension shown in the above table. Specify in 1 mm units.

* When the L dimension is shorter than the standard, the left/right clamping bolt phases will be off by 45°.

* Check "Standard Bore Diameters" for SFC DA2 for the standard bore diameters.

Keyway milling applications If you are using a keyed shaft, we can mill a keyway in the clamping hub to your specifications.

SFC SA2/DA2

Dimensions

Unit [mm]
Compatible with H9 Class standard keyway widthsCompatible with JS9 Class standard keyway widths
Nominal bore diameterBore diameter (d1, d2)Keyway width (W1, W2)Keyway height (T1, T2)Nominal bore diameterBore diameter (d1, d2)Keyway width (W1, W2)Keyway height (T1, T2)
8BH83+0.02509.4+0.308BJ83±0.01259.4+0.30
9BH93+0.025010.4+0.309BJ93±0.012510.4+0.30
10BH103+0.025011.4+0.3010BJ103±0.012511.4+0.30
11BH114+0.030012.8+0.3011BJ114±0.015012.8+0.30
12BH124+0.030013.8+0.3012BJ124±0.015013.8+0.30
13BH135+0.030015.3+0.3013BJ135±0.015015.3+0.30
14BH145+0.030016.3+0.3014BJ145±0.015016.3+0.30
15BH155+0.030017.3+0.3015BJ155±0.015017.3+0.30
16BH165+0.030018.3+0.3016BJ165±0.015018.3+0.30
17BH175+0.030019.3+0.3017BJ175±0.015019.3+0.30
18BH186+0.030020.8+0.3018BJ186±0.015020.8+0.30
19BH196+0.030021.8+0.3019BJ196±0.015021.8+0.30
20BH206+0.030022.8+0.3020BJ206±0.015022.8+0.30
22BH226+0.030024.8+0.3022BJ226±0.015024.8+0.30
24BH248+0.036027.3+0.3024BJ248±0.018027.3+0.30
25BH258+0.036028.3+0.3025BJ258±0.018028.3+0.30
28BH288+0.036031.3+0.3028BJ288±0.018031.3+0.30
30BH308+0.036033.3+0.3030BJ308±0.018033.3+0.30
32BH3210+0.036035.3+0.3032BJ3210±0.018035.3+0.30
35BH3510+0.036038.3+0.3035BJ3510±0.018038.3+0.30
38BH3810+0.036041.3+0.3038BJ3810±0.018041.3+0.30
40BH4012+0.043043.3+0.3040BJ4012±0.021543.3+0.30
42BH4212+0.043045.3+0.3042BJ4212±0.021545.3+0.30
45BH4514+0.043048.8+0.3045BJ4514±0.021548.8+0.30

*We can also handle standards not listed above. Consult Miki Pulley.


Standard Bore Diameter

ModelStandard bore diameter, d2 (mm)
8910111213141516171819202224252830323538404245
SFC-025SA2/DA2
SFC-030SA2/DA2
SFC-035SA2/DA2
SFC-040SA2/DA29
SFC-050SA2/DA2182022
SFC-055SA2/DA231343638
SFC-060SA2/DA25051
SFC-080SA2/DA2
SFC-090SA2/DA2
SFC-100SA2/DA2226

* The shaft tolerance for standard bore diameter is h7 (h6 or g6): designation B. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.

* Shaft tolerances j6/k6: designations J/K are optional, and are only supported for bore diameters marked with ○ .

* Bore diameters marked with ● or numbers are supported as the standard bore diameters. Consult Miki Pulley regarding special arrangements which may be possible for other bore diameters.

* Bore diameters whose fields contain numbers are restricted in their rated torque by the holding power of the shaft connection component because the bore diameter is small. The numbers indicate the rated torque [N•m].

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