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

        
Model Type Rated torque [N·m] Moment of inertia[kg·m2] Mass [kg]
SFC-040SA2-□B-11BC B 12 26.58×10-6 0.131
C 12 33.28×10-6 0.146
SFC-050SA2-□B-11BC B 25 82.91×10-6 0.240
C25 103.5×10-6 0.258
SFC-050SA2-□B-14BCB25 88.72×10-6 0.271
C 25 111.5×10-6 0.301
SFC-050SA2-□B-16BC B 25 95.44×10-6 0.309
C 25 118.2×10-6 0.338
SFC-055SA2-□B-14BC C 40 201.1×10-6 0.409
SFC-055SA2-□B-16BC C 40 207.8×10-6 0.446
SFC-060SA2-□B-16BC B 60 228.7×10-6 0.475
C 60 287.8×10-6 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
j6(Option) J
k6(Option) K
Bore diameter 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.

* 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 ratedtorque [N•m].

SFC (DA2)

Specifications

Model Type Rated torque [N/mm] Moment of inertia[kg·m2] Mass [kg]
SFC-040DA2-□B-11BC B 12 39.42×10-6 0.180
C 12 46.12×10-6 0.195
SFC-050DA2-□B-11BC B 25 125.5×10-6 0.331
C 25 146.1×10-6 0.349
SFC-050DA2-□B-14BC B 25 131.1×10-6 0.362
C 25 154.1×10-6 0.392
SFC-050DA2-□B-16BC B 25 138.1×10-6 0.400
C 25 160.8×10-6 0.430
SFC-055DA2-□B-14BC C 40 274.0×10-6 0.530
SFC-055DA2-□B-16BC C 40 280.5×10-6 0.567
SFC-060DA2-□B-16BC B 60 339.4×10-6 0.638
C 60 398.5×10-6 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
Qty - 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
j6(Option) J
k6(Option) K
Bore diameter 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.

* 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 ratedtorque [N•m].

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

Model Type Rated torque
[N·m]
Misalignment Max. rotation speed
[min-1]
Moment of inertia
[kg·m2]
Mass
[kg]
Parallel
[mm]
Parallel
[mm]
Angular [°] Axial [mm]
Min. L Max. L Min. L Max. L
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 Type d1[mm] d2[mm] 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 0.4~0.5
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) 1.0~1.1(0.4~0.5)
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 1.0~1.1
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 1.0~1.1
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 1.5~1.9
B >10 16 12.5
C >10 14 -- --
SFC-035DA2 C 6 16 6 19 39 -- 48 43 65 15.5 3 -- 14 4.5 17 17 1-M4 3.4~4.1
SFC-040DA2 A 8 15 8 15 44 29.6 48 43 65 15.5 3 11 -- 4.5 20 19.5 1-M4 3.4~4.1
B >15 24 17
C >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 7.0~8.5
B >19 30 22
C >19 25 -- --
SFC-055DA2 C 10 30 10 30 63 -- 68.7 60 85 24 2.6 -- 23 7.75 31 31 1-M6 14~15
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 14~15
B >24 35 26.5
C >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.

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 widths Compatible with JS9 Class standard keyway widths
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]
Shaft diameter Shaft tolerance Shaft diameter Shaft tolerance Shaft diameter Shaft tolerance Shaft diameter 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±0.0125 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±0.0125 45.3+0.30
19 BH - 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±0.0125 48.8+0.30

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


Standard Bore Diameter

Standard (option) bore diameter, d1/d2 [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 38 40 42 45
Shaft tolerance h7(h6・g6) B
j6(Option) J  
k6(Option) K                              
Supported bore diameter for each model 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~+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 ratedtorque [N•m].

Related Product