MACHINE PARTS .
MST-C
Flexible coupling - Slit - type - Clamping type
RoHS Compliant
Zero Backlash
Single-Piece Construction
Dimension DrawingDimensions/Specifications/CADMaterial/FinishCharacteristics
Dimension Drawing
MST-C/MSTS-C_Dimension Figure
Dimensions/Specifications/CAD
Unit : mm
Part Number A L W F G M Wrench
Torque
(N･m) Standard bore diameter
D1-D2 CAD RFQ
MST-12C 12 5 18.5 2.5 4 M2 0.5
MST-16C 16 6.5 23 3.25 5 M2.5 1
MST-20C 20 7.5 26 3.75 6.5 M2.5 1
MST-25C 25 8.5 31 4.25 9 M3 1.5
MST-32C 32 12 41 6 11 M4 2.5
MST-40C 40 17 56 8.5 14 M5 4
MST-50C 50 21 71 10.5 18 M6 8
MST-63C 63 26 90 13 24 M8 16
Part Number Max. Bore Diameter
(mm) Rated
Torque*
(N・m) Max.
Torque*
(N・m) Max.
Rotational
(min-1) Moment
of
Inertia**
(Kg・m2) Static
Torsional
Stiffness
(N・m/rad) Max. Lateral Misalignment
(mm) Max. Angular Misalignment
(°) Max. Axial Misalignment
(mm) Mass**
(g)
MST-12C 5 0.4 0.8 52000 7.8×10-8 45 0.1 2 ±0.3 3.6
MST-16C 6 0.5 1 39000 3.4×10-7 80 0.1 2 ±0.4 9.2
MST-20C 8 1 2 31000 9.1×10-7 170 0.1 2 ±0.4 16
MST-25C 10 2 4 25000 2.6×10-6 380 0.15 2 ±0.5 28
MST-32C 14 4 8 19000 9.7×10-6 500 0.15 2 ±0.5 64
MST-40C 18 8 16 15000 3.3×10-5 700 0.2 2 ±0.5 140
MST-50C 22 16 32 12000 1.0×10-4 1800 0.2 2 ±0.5 270
MST-63C 30 32 64 10000 3.2×10-4 3100 0.2 2 ±0.5 530
*Adjustment of rated and max. torque specifications for load fluctuations is not required.
For more detailed information, please refer to Selection Guidelines [PDF 171KB].
**Based on the max. shaft bores.
Part Number Stock Bores D1-D2
MST-12C 4-4 4-5 4.5-5 5-5
MST-16C 4.5-5 4.5-6 5-5 5-6 6-6
MST-20C 5-6 5-6.35 5-7 5-8 6-6
6-6.35 6-7 6-8 6.35-8 8-8
MST-25C 5-6 6-6 6-6.35 6-8 6-10
6.35-8 6.35-10 8-8 8-9.525 8-10
9.525-10 10-10
MST-32C 8-8 8-9.525 8-10 8-12 9.525-10
9.525-12 10-10 10-11 10-12 10-14
12-12 12-14 ><><