Product Information

Options of SFC Models

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

SFC-□SA2(BC)

[Specifications]

Model shape TYPE Rated torque
[N・m]		 Misalignment Max. rotation speed
[min-1]		 Torsional stiffness
[N・m/rad]		 Axial stiffness
[N/mm]		 Moment of inertia
[kg・m2]		 Mass
[kg]
Parallel
[mm]		 Angular
[°]		 Axial
[mm]
SFC-040SA2-□B-11BC B 12 0.02 1 ±0.3 10000 20000 80 26.58×10-6 0.131
C 12 0.02 1 ±0.3 10000 20000 80 33.28×10-6 0.146
SFC-050SA2-□B-11BC B 25 0.02 1 ±0.4 10000 32000 48 82.91×10-6 0.240
C 25 0.02 1 ±0.4 10000 32000 48 103.5×10-6 0.258
SFC-050SA2-□B-14BC B 25 0.02 1 ±0.4 10000 32000 48 88.72×10-6 0.271
C 25 0.02 1 ±0.4 10000 32000 48 111.5×10-6 0.301
SFC-050SA2-□B-16BC B 25 0.02 1 ±0.4 10000 32000 48 95.44×10-6 0.309
C 25 0.02 1 ±0.4 10000 32000 48 118.2×10-6 0.338
SFC-055SA2-□B-14BC C 40 0.02 1 ±0.42 10000 50000 43 201.1×10-6 0.409
SFC-055SA2-□B-16BC C 40 0.02 1 ±0.42 10000 50000 43 207.8×10-6 0.446
SFC-060SA2-□B-16BC B 60 0.02 1 ±0.45 10000 70000 76.4 228.7×10-6 0.475
C 60 0.02 1 ±0.45 10000 70000 76.4 287.8×10-6 0.517

* 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]
Model d2 W T WA LA dA DA LL D L LF C A1 A2 M
Qty - Nominal dia.
SFC-040SA2-□B-11BC 11 4 12.2 18 16 17 22 44 44 34 15.5 4.5 11 17 1-M4
SFC-050SA2-□B-11BC 11 4 12.2 18 16 17 22 48.4 56 43.4 20.5 6 14.5 22 1-M5
SFC-050SA2-□B-14BC 14 4 15.1 24 19 22 28 53.4 56 43.4 20.5 6 14.5 22 1-M5
SFC-050SA2-□B-16BC 16 5 17.3 24 29 26 30 63.4 56 43.4 20.5 6 14.5 22 1-M5
SFC-055SA2-□B-14BC 14 4 15.1 24 19 22 28 56.6 63 50.6 24 7.75 - 23 1-M6
SFC-055SA2-□B-16BC 16 5 17.3 24 29 26 30 66.6 63 50.6 24 7.75 - 23 1-M6
SFC-060SA2-□B-16BC 16 5 17.3 24 29 26 30 69.6 68 53.6 25.2 7.75 17.5 26.5 1-M6

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

[Standard bore diameter]

Standard (option) bore diameter, d1 [mm] and restricted rated torque [N・m]
Nominal bore diameter 8 9 9.525 10 11 12 13 14 15 16 17 18 19 20 22 24 25 28 30 32 35
Shaft tolerance h7(h6,g6) B ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Shaft tolerance j6(option) J ○ ○ ○ ○
Shaft tolerance k6(option) K ○ ○ ○ ○ ○ ○ ○ ○
SFC-040SA2-□B-11BC 9 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050SA2-□B-11BC 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050SA2-□B-14BC 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050SA2-□B-16BC 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-055SA2-□B-14BC 31 34 36 38 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-055SA2-□B-16BC 31 34 36 38 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-060SA2-□B-16BC 50 51 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

* 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].

SFC-□DA2(BC)

[Specifications]

Model shape TYPE Rated torque
[N・m]		 Misalignment Max. rotation speed
[min-1]		 Torsional stiffness
[N・m/rad]		 Axial stiffness
[N/mm]		 Moment of inertia
[kg・m2]		 Mass
[kg]
Parallel
[mm]		 Angular
[°]		 Axial
[mm]
SFC-040DA2-□B-11BC B 12 0.24 1(On one side) ±0.6 10000 10000 40 39.42×10-6 0.180
C 12 0.24 1(On one side) ±0.6 10000 10000 40 46.12×10-6 0.195
SFC-050DA2-□B-11BC B 25 0.28 1(On one side) ±0.8 10000 16000 24 125.5×10-6 0.331
C 25 0.28 1(On one side) ±0.8 10000 16000 24 146.1×10-6 0.349
SFC-050DA2-□B-14BC B 25 0.28 1(On one side) ±0.8 10000 16000 24 131.1×10-6 0.362
C 25 0.28 1(On one side) ±0.8 10000 16000 24 154.1×10-6 0.392
SFC-050DA2-□B-16BC B 25 0.28 1(On one side) ±0.8 10000 16000 24 138.1×10-6 0.400
C 25 0.28 1(On one side) ±0.8 10000 16000 24 160.8×10-6 0.430
SFC-055DA2-□B-14BC C 40 0.31 1(On one side) ±0.84 10000 25000 21.5 274.0×10-6 0.530
SFC-055DA2-□B-16BC C 40 0.31 1(On one side) ±0.84 10000 25000 21.5 280.5×10-6 0.567
SFC-060DA2-□B-16BC B 60 0.34 1(On one side) ±0.9 10000 35000 38.2 339.4×10-6 0.638
C 60 0.34 1(On one side) ±0.9 10000 35000 38.2 398.5×10-6 0.681

* 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]
Model d2 W T WA LA dA DA LL D L LF C A1 A2 M
Quantity - Nominal dia.
SFC-040DA2-□B-11BC 11 4 12.2 18 16 17 22 58 44 48 15.5 4.5 11 17 1-M4
SFC-050DA2-□B-11BC 11 4 12.2 18 16 17 22 64.8 56 59.8 20.5 6 14.5 22 1-M5
SFC-050DA2-□B-14BC 14 4 15.1 24 19 22 28 69.8 56 59.8 20.5 6 14.5 22 1-M5
SFC-050DA2-□B-16BC 16 5 17.3 24 29 26 30 79.8 56 59.8 20.5 6 14.5 22 1-M5
SFC-055DA2-□B-14BC 14 4 15.1 24 19 22 28 74.4 63 68.7 24 7.75 ― 23 1-M6
SFC-055DA2-□B-16BC 16 5 17.3 24 29 26 30 84.7 63 68.7 24 7.75 ― 23 1-M6
SFC-060DA2-□B-16BC 16 5 17.3 24 29 26 30 89.3 68 73.3 25.2 7.75 17.5 26.5 1-M6

* For other dimensions, see dimensions for double element type SFC-□DA2.

[Standard bore diameter]

Standard (option) bore diameter, d1 [mm] and restricted rated torque [N・m]
Nominal bore diameter 8 9 9.525 10 11 12 13 14 15 16 17 18 19 20 22 24 25 28 30 32 35
Shaft tolerance h7(h6,g6) B ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Shaft tolerance j6(option) J ○ ○ ○ ○
Shaft tolerance k6(option) K ○ ○ ○ ○ ○ ○ ○ ○
SFC-040DA2-□B-11BC 9 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050DA2-□B-11BC 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050DA2-□B-14BC 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050DA2-□B-16BC 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-055DA2-□B-14BC 31 34 36 38 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-055DA2-□B-16BC 31 34 36 38 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-060DA2-□B-16BC 50 51 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

* 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].

For length-specified special order partsSFC-□DA2 type spacer length can be changed to attain the necessary distance between shafts. Specify the length in 1 mm units.

SFC-□DA2(L)

[Specifications]

Model shape TYPE Rated torque
[N・m]		 Misalignment Max. rotation speed
[min-1]		 Moment of inertia
[kg・m2]		 Mass
[kg]
Parallel[mm] Angular
[°]		 Axial
[mm]
LMin. LMax. LMin. LMax. LMin. LMax.
SFC-005DA2 C 0.6 0.03 0.20 0.5(On one side) ±0.1 10000 0.33×10-6 0.62×10-6 0.009 0.017
SFC-010DA2 C 1 0.08 0.44 1(On one side) ±0.2 10000 0.72×10-6 1.38×10-6 0.014 0.026
SFC-020DA2 C 2 0.10 0.46 1(On one side) ±0.33 10000 3.02×10-6 5.30×10-6 0.031 0.054
SFC-025DA2 C 4 0.09 0.46 1(On one side) ±0.38 10000 4.55×10-6 7.95×10-6 0.036 0.061
SFC-030DA2 A 5 0.11 0.48 1(On one side) ±0.4 10000 6.09×10-6 12.80×10-6 0.046 0.085
B 8.11×10-6 14.82×10-6 0.053 0.091
C 10.22×10-6 16.93×10-6 0.061 0.099
SFC-035DA2 C 10 0.15 0.54 1(On one side) ±0.5 10000 23.85×10-6 35.97×10-6 0.108 0.161
SFC-040DA2 A 12 0.15 0.54 1(On one side) ±0.6 10000 25.06×10-6 44.76×10-6 0.107 0.174
B 30.89×10-6 50.62×10-6 0.116 0.182
C 37.58×10-6 57.31×10-6 0.130 0.197
SFC-050DA2 A 25 0.16 0.63 1(On one side) ±0.8 10000 77.42×10-6 144.3×10-6 0.205 0.347
B 97.97×10-6 164.8×10-6 0.225 0.365
C 120.8×10-6 187.6×10-6 0.252 0.394
SFC-055DA2 C 40 0.16 0.60 1(On one side) ±0.84 10000 226.8×10-6 325.0×10-6 0.378 0.538
SFC-060DA2 A 60 0.19 0.63 1(On one side) ±0.9 10000 210.8×10-6 340.1×10-6 0.382 0.567
B 269.9×10-6 399.2×10-6 0.424 0.609
C 333.5×10-6 462.8×10-6 0.484 0.669

* 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]
Model shape TYPE d1 d2 D N L LF S A1 A2 C d3 K M Tightening torque
[N・m]
Min. Max. Min. Max. Std. Min. Max.
SFC-005DA2 C 3 6 3 6 16 - 23.2 21 40 7.85 1 - 4.8 2.5 6.5 6.5 1-M2 0.4 to 0.5
SFC-010DA2 C 3 8 3 8 19 - 25.9 24 45 9.15 1.05 - 5.8(6) 3.15 8.5 8.5 1-M2.5(M2) 1.0 to 1.1(0.4 to 0.5)
SFC-020DA2 C 4 10 4 11 26 - 32.3 29 50 10.75 1.65 - 9.5 3.3 10.6 10.6 1-M2.5 1.0 to 1.1
SFC-025DA2 C 5 14 5 14 29 - 32.8 29 50 10.75 1.9 - 11 3.3 15 14.5 1-M2.5 1.0 to 1.1
SFC-030DA2 A 5 10 5 10 34 21.6 37.8 34 55 12.4 2.5 8 - 3.75 15 14.5 1-M3 1.5 to 1.9
B Over 10 16 12.5
C Over 10 14 - -
SFC-035DA2 C 6 16 6 19 39 - 48 43 65 15.5 3 - 14 4.5 17 17 1-M4 3.4 to 4.1
SFC-040DA2 A 8 15 8 15 44 29.6 48 43 65 15.5 3 11 - 4.5 20 19.5 1-M4 3.4 to 4.1
B Over 15 24 17
C Over 15 19 - -
SFC-050DA2 A 8 19 8 19 56 38 59.8 53 80 20.5 2.4 14.5 - 6 26 26 1-M5 7.0 to 8.5
B Over 19 30 22
C Over 19 25 - -
SFC-055DA2 C 10 30 10 30 63 - 68.7 60 85 24 2.6 - 23 7.75 31 31 1-M6 14 to 15
SFC-060DA2 A 11 24 11 24 68 46 73.3 65 90 25.2 3.2 17.5 - 7.75 31 31 1-M6 14 to 15
B Over 24 35 26.5
C Over 24 30 - -

* 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.

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

SFC-□SA2/DA2

[Dimensions]

Unit [mm]
H9 keyway width standards JS9 keyway width standards
Nominal bore dia. bore dia.
d1/d2
[mm]		 Keyway width
W1/W2
[mm]		 Keyway height
T1/T2
[mm]		 Nominal bore dia. bore dia.
d1/d2
[mm]		 Keyway width
W1/W2
[mm]		 Keyway height
T1/T2
[mm]		 Nominal bore dia. bore dia.
d1/d2
[mm]		 Keyway width
W1/W2
[mm]		 Keyway height
T1/T2
[mm]		 Nominal bore dia. bore dia.
d1/d2
[mm]		 Keyway width
W1/W2
[mm]		 Keyway height
T1/T2
[mm]
bore
dia.		 Shaft
tolerance		 bore
dia.		 Shaft
tolerance		 bore
dia.		 Shaft
tolerance		 bore
dia.		 Shaft
tolerance
h7 j6 k6 h7 j6 k6 h7 j6 k6 h7 j6 k6
8 BH - KH 8 3+0.0250 9.4+0.30 20 BH - - 20 6+0.0300 22.8+0.30 8 BJ - KJ 8 3±0.0125 9.4+0.30 20 BJ - - 20 6±0.0150 22.8+0.30
9 BH - KH 9 3+0.0250 10.4+0.30 22 BH JH KH 22 6+0.0300 24.8+0.30 9 BJ - KJ 9 3±0.0125 10.4+0.30 22 BJ JJ KJ 22 6±0.0150 24.8+0.30
10 BH - - 10 3+0.0250 11.4+0.30 24 BH JH KH 24 8+0.0360 27.3+0.30 10 BJ - - 10 3±0.0125 11.4+0.30 24 BJ JJ KJ 24 8±0.0180 27.3+0.30
11 BH - - 11 4+0.0300 12.8+0.30 25 BH - - 25 8+0.0360 28.3+0.30 11 BJ - - 11 4±0.0150 12.8+0.30 25 BJ - - 25 8±0.0180 28.3+0.30
12 BH - - 12 4+0.0300 13.8+0.30 28 BH JH - 28 8+0.0360 31.3+0.30 12 BJ - - 12 4±0.0150 13.8+0.30 28 BJ JJ - 28 8±0.0180 31.3+0.30
13 BH - - 13 5+0.0300 15.3+0.30 30 BH - - 30 8+0.0360 33.3+0.30 13 BJ - - 13 5±0.0150 15.3+0.30 30 BJ - - 30 8±0.0180 33.3+0.30
14 BH - KH 14 5+0.0300 16.3+0.30 32 BH - KH 32 10+0.0360 35.3+0.30 14 BJ - KJ 14 5±0.0150 16.3+0.30 32 BJ - KJ 32 10±0.0180 35.3+0.30
15 BH - - 15 5+0.0300 17.3+0.30 35 BH - - 35 10+0.0360 38.3+0.30 15 BJ - - 15 5±0.0150 17.3+0.30 35 BJ - - 35 10±0.0180 38.3+0.30
16 BH - KH 16 5+0.0300 18.3+0.30 38 BH - KH 38 10+0.0360 41.3+0.30 16 BJ - KJ 16 5±0.0150 18.3+0.30 38 BJ - KJ 38 10±0.0180 41.3+0.30
17 BH - - 17 5+0.0300 19.3+0.30 40 BH - - 40 12+0.4300 43.3+0.30 17 BJ - - 17 5±0.0150 19.3+0.30 40 BJ - - 40 12±0.0215 43.3+0.30
18 BH - - 18 6+0.0300 20.8+0.30 42 BH - - 42 12+0.4300 45.3+0.30 18 BJ - - 18 6±0.0150 20.8+0.30 42 BJ - - 42 12±0.0215 45.3+0.30
19 BH JH KH 19 6+0.0300 21.8+0.30 45 BH - - 45 14+0.4300 48.8+0.30 19 BJ JJ KJ 19 6±0.0150 21.8+0.30 45 BJ - - 45 14±0.0215 48.8+0.30

* Bore diameter of φ35 (nominal diameter B), the shaft tolerance is -0.025 to +0.010 .

* We can also handle standards not listed above. Consult MIKI PULLEY.


[Standard bore diameters]

Standard (option) bore diameter, d1/d2 [mm] and restricted rated torque [N·m]
Nominal bore dia. 8 9 9.525 10 11 12 13 14 15 16 17 18 19 20 22 24 25 28 30 32 35 38 40 42 45
Shaft tolerance h7(h6/g6) B ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Shaft tolerance j6(option) J ○ ○ ○ ○
Shaft tolerance k6(option) K ○ ○ ○ ○ ○ ○ ○ ○ ○
SFC-025 d1 ● ● ● ● ● ● ● ●
d2 ● ● ● ● ● ● ● ●
SFC-030 d1 ● ● ● ● ● ● ● ●
d2 ● ● ● ● ● ● ● ● ● ●
SFC-035 d1 ● ● ● ● ● ● ● ● ● ●
d2 ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-040 d1 9 ● ● ● ● ● ● ● ● ● ● ● ●
d2 9 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050 d1 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ●
d2 18 20 22 22 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-055 d1 31 34 36 38 ● ● ● ● ● ● ● ● ● ● ● ●
d2 31 34 36 38 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-060 d1 50 51 ● ● ● ● ● ● ● ● ● ● ● ● ●
d2 50 51 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-080 d1 ● ● ● ● ● ● ● ● ● ●
d2 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-090 d1 ● ● ● ● ● ● ●
d2 ● ● ● ● ● ● ● ● ●
SFC-100 d1 226 ● ● ● ● ●
d2 226 ● ● ● ● ●

* 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].

Clean room compatibleIt is a clean room compatible product that has been cleaned, assembled (ISO class 6) and packed in consideration of its use in clean rooms.

SFC-□SA2(CC/CF)

[Specifications]

Model shape TYPE Rated torque
[N・m]		 Misalignment Max. rotation speed
[min-1]		 Torsional stiffness
[N・m/rad]		 Axial stiffness
[N/mm]		 Moment of inertia
[kg・m2]		 Mass
[kg]
Parallel
[mm]		 Angular
[°]		 Axial
[mm]
SFC-020SA2 C 2 0.02 1 ±0.15 10000 3700 64 2.39×10-6 0.025
SFC-025SA2 C 4 0.02 1 ±0.19 10000 5600 60 3.67×10-6 0.029
SFC-030SA2 A 5 0.02 1 ±0.2 10000 8000 64 4.09×10-6 0.034
B 6.11×10-6 0.040
C 8.23×10-6 0.048
SFC-035SA2 C 10 0.02 1 ±0.25 10000 18000 112 18.50×10-6 0.083
SFC-040SA2 A 12 0.02 1 ±0.3 10000 20000 80 16.71×10-6 0.077
B 22.59×10-6 0.085
C 29.28×10-6 0.100
SFC-050SA2 A 25 0.02 1 ±0.4 10000 32000 48 56.26×10-6 0.160
B 76.71×10-6 0.178
C 99.38×10-6 0.207
SFC-055SA2 C 40 0.02 1 ±0.42 10000 50000 43 188.7×10-6 0.315
SFC-060SA2 A 60 0.02 1 ±0.45 10000 70000 76.4 147.0×10-6 0.285
B 206.3×10-6 0.328
C 270.0×10-6 0.387
SFC-080SA2 C 100 0.02 1 ±0.55 10000 140000 128 716.3×10-6 0.720

* 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 Diameter list 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]
Model shape TYPE d1 d2 D N L LF S A1 A2 C K M Tightening torque
[N・m]
Min. Max. Min. Max. CC Low dust CF Fluorine
SFC-020SA2 C 5 10 5 11 26 - 23.15 10.75 1.65 - 9.5 3.3 10.6 1-M2.5 0.5 0.9
SFC-025SA2 C 5 14 5 14 29 - 23.4 10.75 1.9 - 11 3.3 14.5 1-M2.5 0.5 0.9
SFC-030SA2 A 5 10 5 10 34 21.6 27.3 12.4 2.5 8 - 3.75 14.5 1-M3 1.5 3.2
B Over 10 16 12.5
C Over 10 14 - -
SFC-035SA2 C 6 16 6 19 39 - 34 15.5 3 - 14 4.5 17 1-M4 4 7.7
SFC-040SA2 A 8 15 8 15 44 29.6 34 15.5 3 11 - 4.5 19.5 1-M4 4 7.7
B Over 15 24 17
C Over 15 19 - -
SFC-050SA2 A 8 19 8 19 56 38 43.4 20.5 2.4 14.5 - 6 26 1-M5 7 12
B Over 19 30 22
C Over 19 25 - -
SFC-055SA2 C 10 30 10 30 63 - 50.6 24 2.6 - 23 7.75 31 1-M6 13 22.5
SFC-060SA2 A 11 24 11 24 68 46 53.6 25.2 3.2 17.5 - 7.75 31 1-M6 13 22.5
B Over 24 35 26.5
C Over 24 30 - -
SFC-080SA2 C 18 35 18 40 82 - 68 30 8 - 28 9 38 1-M8 27 45

* 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 K dimension is the inner diameter of the element. For d2 dimension exceeding this value, shaft can be inserted only up to LF dimension to the d2 side hub.

* 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.

* You can choose from two types of grease for clamp bolts: low dust generation grease and fluorine grease.

[Standard bore diameters] (Low dust generation grease)

Model Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
d1/d2 5 6 6.35 7 8 9 9.525 10 11 12 13 14 15 16 17 18 19 20 22 24 25 28 30 32 35 38 40
SFC-020SA2 d1 0.5 0.6 0.6 0.6 1.0 1.3 1.3 ●
d2 0.5 0.6 0.6 0.6 1.0 1.3 1.3 ● ●
SFC-025SA2 d1 0.5 0.5 0.5 0.5 0.8 0.8 0.8 1.8 1.8 2.3 2.3 ●
d2 0.5 0.5 0.5 0.5 0.8 0.8 0.8 1.8 1.8 2.3 2.3 ●
SFC-030SA2 d1 0.8 1.6 2 2.6 3.4 4.4 4.9 ● ● ● ● ●
d2 0.8 1.6 2 2.6 3.4 4.4 4.9 ● ● ● ● ● ● ●
SFC-035SA2 d1 3.3 3.8 4.8 6.3 7.7 8.5 9.2 ● ● ● ● ● ●
d2 3.3 3.8 4.8 6.3 7.7 8.5 9.2 ● ● ● ● ● ● ● ● ●
SFC-040SA2 d1 9 9 9 9 9 ● ● ● ● ● ● ● ●
d2 9 9 9 9 9 ● ● ● ● ● ● ● ● ● ● ●
SFC-050SA2 d1 11 16 17 19 19 24 24 24 ● ● ● ● ● ● ● ● ●
d2 11 16 17 19 19 24 24 24 ● ● ● ● ● ● ● ● ● ● ●
SFC-055SA2 d1 20 24 29 33 37 ● ● ● ● ● ● ● ● ● ● ●
d2 20 24 29 33 37 ● ● ● ● ● ● ● ● ● ● ●
SFC-060SA2 d1 38 41 44 48 55 55 58 ● ● ● ● ● ● ● ●
d2 38 41 44 48 55 55 58 ● ● ● ● ● ● ● ● ● ●
SFC-080SA2 d1 54 60 65 75 85 90 ● ● ● ●
d2 54 60 65 75 85 90 ● ● ● ● ● ●

* 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.

* 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].

[Standard bore diameters] (Fluorine grease)

Model Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
d1/d2 5 6 6.35 7 8 9 9.525 10 11 12 13 14 15 16 17 18 19 20 22 24 25 28 30 32 35 38 40
SFC-020SA2 d1 0.7 0.7 0.7 0.8 ● ● ● ●
d2 0.7 0.7 0.7 0.8 ● ● ● ● ●
SFC-025SA2 d1 0.5 0.5 0.5 1.1 1.6 1.6 1.6 3.2 3.2 ● ● ●
d2 0.5 0.5 0.5 1.1 1.6 1.6 1.6 3.2 3.2 ● ● ●
SFC-030SA2 d1 0.8 2 2.4 3.1 4.3 ● ● ● ● ● ● ●
d2 0.8 2 2.4 3.1 4.3 ● ● ● ● ● ● ● ● ●
SFC-035SA2 d1 3.6 5.2 6.4 8.2 ● ● ● ● ● ● ● ● ●
d2 3.6 5.2 6.4 8.2 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-040SA2 d1 ● ● ● ● ● ● ● ● ● ● ● ● ●
d2 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050SA2 d1 11 17 19 20 22 ● ● ● ● ● ● ● ● ● ● ● ●
d2 11 17 19 20 22 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-055SA2 d1 28 37 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
d2 28 37 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-060SA2 d1 40 44 49 53 ● ● ● ● ● ● ● ● ● ● ●
d2 40 44 49 53 ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-080SA2 d1 60 66 71 81 90 95 ● ● ● ●
d2 60 66 71 81 90 95 ● ● ● ● ● ●

* 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.

* 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].

SFC-□DA2(CC/CF)

[Specifications]

Model shape TYPE Rated torque
[N・m]		 Misalignment Max. rotation speed
[min-1]		 Torsional stiffness
[N・m/rad]		 Axial stiffness
[N/mm]		 Moment of inertia
[kg・m2]		 Mass
[kg]
Parallel
[mm]		 Angular
[°]		 Axial
[mm]
SFC-020DA2 C 2 0.15 1(On one side) ±0.33 10000 1850 32 3.43×10-6 0.035
SFC-025DA2 C 4 0.16 1(On one side) ±0.38 10000 2800 30 5.26×10-6 0.040
SFC-030DA2 A 5 0.18 1(On one side) ±0.4 10000 4000 32 7.46×10-6 0.054
B 9.49×10-6 0.060
C 11.60×10-6 0.069
SFC-035DA2 C 10 0.24 1(On one side) ±0.5 10000 9000 562 27.03×10-6 0.122
SFC-040DA2 A 12 0.24 1(On one side) ±0.6 10000 10000 40 30.03×10-6 0.124
B 35.81×10-6 0.132
C 42.60×10-6 0.147
SFC-050DA2 A 25 0.28 1(On one side) ±0.8 10000 16000 24 99.32×10-6 0.252
B 119.8×10-6 0.270
C 142.4×10-6 0.299
SFC-055DA2 C 40 0.31 1(On one side) ±0.84 10000 25000 21.5 262.3×10-6 0.436
SFC-060DA2 A 60 0.34 1(On one side) ±0.9 10000 35000 38.2 258.6×10-6 0.450
B 317.8×10-6 0.493
C 381.6×10-6 0.552
SFC-080DA2 C 100 0.52 1(On one side) ±1.10 10000 70000 64 1047×10-6 1.050

* 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 Diameter list 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]
Model shape TYPE d1 d2 D N L LF LP S A1 A2 C d3 K M Tightening torque
[N・m]
Min. Max. Min. Max. CC Low dust CF Fluorine
SFC-020DA2 C 5 10 5 11 26 - 32.3 10.75 7.5 1.65 - 9.5 3.3 10.6 10.6 1-M2.5 0.5 0.9
SFC-025DA2 C 5 14 5 14 29 - 32.8 10.75 7.5 1.9 - 11 3.3 15 14.5 1-M2.5 0.5 0.9
SFC-030DA2 A 5 10 5 10 34 21.6 37.8 12.4 8 2.5 8 - 3.75 15 14.5 1-M3 1.5 3.2
B Over 10 16 12.5
C Over 10 14 - -
SFC-035DA2 C 6 16 6 19 39 - 48 15.5 11 3 - 14 4.5 17 17 1-M4 4 7.7
SFC-040DA2 A 8 15 8 15 44 29.6 48 15.5 11 3 11 - 4.5 20 19.5 1-M4 4 7.7
B Over 15 24 17
C Over 15 24 - -
SFC-050DA2 A 8 19 8 19 56 38 59.8 20.5 14 2.4 14.5 - 6 26 26 1-M5 7 12
B Over 19 30 22
C Over 19 25 - -
SFC-055DA2 C 10 30 10 30 63 - 68.7 24 15.5 2.6 - 23 7.75 31 31 1-M6 13 22.5
SFC-060DA2 A 11 24 11 24 68 46 73.3 25.2 16.5 3.2 17.5 - 7.75 31 31 1-M6 13 22.5
B Over 24 35 26.5
C Over 24 30 - -
SFC-080DA2 C 18 35 18 40 82 - 98 30 22 8 - 28 9 40 38 1-M8 27 45

* 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 K dimension is the inner diameter of the element. For d2 dimension exceeding this value, shaft can be inserted only up to LF dimension to the d2 side hub.

* 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.

* You can choose from two types of grease for clamp bolts: low dust generation grease and fluorine grease.

[Standard bore diameters] (Low dust generation grease)

Model Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
d1/d2 5 6 6.35 7 8 9 9.525 10 11 12 13 14 15 16 17 18 19 20 22 24 25 28 30 32 35 38 40
SFC-020DA2 d1 0.5 0.6 0.6 0.6 1.0 1.3 1.3 ●
d2 0.5 0.6 0.6 0.6 1.0 1.3 1.3 ● ●
SFC-025DA2 d1 0.5 0.5 0.5 0.5 0.8 0.8 0.8 1.8 1.8 2.3 2.3 ●
d2 0.5 0.5 0.5 0.5 0.8 0.8 0.8 1.8 1.8 2.3 2.3 ●
SFC-030DA2 d1 0.8 1.6 2 2.6 3.4 4.4 4.9 ● ● ● ● ●
d2 0.8 1.6 2 2.6 3.4 4.4 4.9 ● ● ● ● ● ● ●
SFC-035DA2 d1 3.3 3.8 4.8 6.3 7.7 8.5 9.2 ● ● ● ● ● ●
d2 3.3 3.8 4.8 6.3 7.7 8.5 9.2 ● ● ● ● ● ● ● ● ●
SFC-040DA2 d1 9 9 9 9 9 ● ● ● ● ● ● ● ●
d2 9 9 9 9 9 ● ● ● ● ● ● ● ● ● ● ●
SFC-050DA2 d1 11 16 17 19 19 24 24 24 ● ● ● ● ● ● ● ● ●
d2 11 16 17 19 19 24 24 24 ● ● ● ● ● ● ● ● ● ● ●
SFC-055DA2 d1 20 24 29 33 37 ● ● ● ● ● ● ● ● ● ● ●
d2 20 24 29 33 37 ● ● ● ● ● ● ● ● ● ● ●
SFC-060DA2 d1 38 41 44 48 55 55 58 ● ● ● ● ● ● ● ●
d2 38 41 44 48 55 55 58 ● ● ● ● ● ● ● ● ● ●
SFC-080DA2 d1 54 60 65 75 85 90 ● ● ● ●
d2 54 60 65 75 85 90 ● ● ● ● ● ●

* 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.

* 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].

[Standard bore diameters] (Fluorine grease)

Model Standard bore diameter, d1/d2 [mm] and restricted rated torque [N・m]
d1/d2 5 6 6.35 7 8 9 9.525 10 11 12 13 14 15 16 17 18 19 20 22 24 25 28 30 32 35 38 40
SFC-020DA2 d1 0.7 0.7 0.7 0.8 ● ● ● ●
d2 0.7 0.7 0.7 0.8 ● ● ● ● ●
SFC-025DA2 d1 0.5 0.5 0.5 1.1 1.6 1.6 1.6 3.2 3.2 ● ● ●
d2 0.5 0.5 0.5 1.1 1.6 1.6 1.6 3.2 3.2 ● ● ●
SFC-030DA2 d1 0.8 2 2.4 3.1 4.3 ● ● ● ● ● ● ●
d2 0.8 2 2.4 3.1 4.3 ● ● ● ● ● ● ● ● ●
SFC-035DA2 d1 3.6 5.2 6.4 8.2 ● ● ● ● ● ● ● ● ●
d2 3.6 5.2 6.4 8.2 ● ● ● ● ● ● ● ● ● ● ● ●
SFC-040DA2 d1 ● ● ● ● ● ● ● ● ● ● ● ● ●
d2 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-050DA2 d1 11 17 19 20 22 ● ● ● ● ● ● ● ● ● ● ● ●
d2 11 17 19 20 22 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-055DA2 d1 28 37 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
d2 28 37 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-060DA2 d1 40 44 49 53 ● ● ● ● ● ● ● ● ● ● ●
d2 40 44 49 53 ● ● ● ● ● ● ● ● ● ● ● ● ●
SFC-080DA2 d1 60 66 71 81 90 95 ● ● ● ●
d2 60 66 71 81 90 95 ● ● ● ● ● ●

* 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.

* 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].

Related Product

SFH Models
SFH Models
Basic Specifications
Max. rated torque 8000 N･m
Standard bore-drilling range 22 mm to 115 mm
Backlash Zero
SFR Models
SFR Models
Basic Specifications
Max. nominal torque 25N･m
Bore ranges 5 mm to 30 mm
Backlash Zero
ALS (B) Type
ALS (B) Type
Basic Specifications
Max. nominal torque 525 N･m
Bore ranges 6 mm to 60 mm
Operating temperature -30℃ to 80℃
AL Models
AL Models
Basic Specifications
Max. nominal torque 50 N･m
Pilot-bore additional processing range 4 mm to 48 mm
Operating temperature -20℃ to 80℃