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Disk Type
SD Series

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SD Series

Go to SD Series(Index)

Double Disk Type Coupling_High Strength Aluminum Alloy Body

  • SD – 2D (.dwg)
  • SD – 3D (.step)

Set-Screw

Drawing of Cylinder-shaped(General Type) and Flange-shaped(General Type)
Dimensions / Performance (General Type)
Model CAD Shape Size (±0.3mm) Screw Rated
Torque
(N·m)
Max.
Torque
(N·m)
Max.
rpm
(min-1)
Moment
of
Inertia
(kg·m2)
Static
Torsional
Stiffness
(N·m/rad)
Mass
(g)
Permissible Misalignment
D D1 D2 L L1 F Size Fastening
Torque
(N·m)
Angular
(˚)
Parallel
(mm)
End-
play
(mm)
SDWA-16 Cylinder-shaped 16 6.3 - 15.8 5.1 2.5 M2.5 0.5 0.5 1 16,000 2.2×10-7 200 6 1 0.05 ±0.2
SDWB-16 Cylinder-shaped 16 6.3 - 17.8 5.1 2.5 M2.5 0.5 0.5 1 16,000 2.6×10-7 200 7 1 0.05 ±0.2
SDWA-19 Cylinder-shaped 19 8.4 - 18.1 6.1 3 M3 0.7 0.9 1.8 16,000 5.3×10-7 300 10 1 0.05 ±0.2
SDWB-19 Cylinder-shaped 19 8.4 - 21.1 6.1 3 M3 0.7 0.9 1.8 16,000 5.8×10-7 300 11 1 0.05 ±0.2
SDWA-22 Cylinder-shaped 22.2 9 - 20.1 6.3 3 M3 0.7 1.1 2.2 12,000 1.0×10-6 400 16 1.5 0.12 ±0.2
SDWB-22 Cylinder-shaped 22.2 9 - 22.3 6.3 3 M3 0.7 1.1 2.2 12,000 1.1×10-6 400 17 1.5 0.12 ±0.2
SDWA-26 Cylinder-shaped 26.6 12.2 - 26 7.4 3.6 M4 1.7 1.5 3 12,000 2.3×10-6 600 28 1.5 0.15 ±0.3
SDWA-31 Cylinder-shaped 31.8 14.4 - 24.7 7.2 3.6 M4 1.7 3 6 10,000 4.3×10-6 1,300 30 1.5 0.15 ±0.4
SDWB-31 Cylinder-shaped 31.8 14.4 - 29.7 7.2 3.6 M4 1.7 3 6 10,000 5.5×10-6 1,300 38 1.5 0.15 ±0.4
SDWA-42 Flange-shaped 42.5 18 29.3 39.7 13.4 4.6 M4 1.7 7 14 8,000 2.1×10-5 2,000 84 1.5 0.18 ±0.5
SDWB-42 Flange-shaped 42.5 18 29.3 44.2 13.4 4.6 M4 1.7 7 14 8,000 2.4×10-5 2,000 94 1.5 0.18 ±0.5
SDWA-47 Flange-shaped 47 20.4 33 39.9 13.9 4.5 M5 4 12 24 8,000 3.4×10-5 4,000 115 1.5 0.2 ±0.5
SDWB-47 Flange-shaped 47 20.4 33 45.7 13.9 4.5 M5 4 12 24 8,000 3.6×10-5 4,000 120 1.5 0.2 ±0.5
SDWA-54 Flange-shaped 54 25 38.5 55.8 19 5.8 M5 4 22 44 7,500 6.7×10-5 7,000 177 1.5 0.2 ±0.5
SDWA-64 Flange-shaped 64 25.8 48 74.4 26 8 M8 15 31 62 7,000 2.2×10-4 11,000 373 1.5 0.3 ±0.5
Drawing of Cylinder-shaped(Lengthy Middle Body Type) and Flange-shaped(Lengthy Middle Body Type)
Dimensions / Performance (Lengthy Middle Body Type)
Model CAD Shape Size (±0.3mm) Screw Rated
Torque
(N·m)
Max.
Torque
(N·m)
Max.
rpm
(min-1)
Moment
of
Inertia
(kg·m2)
Static
Torsional
Stiffness
(N·m/rad)
Mass
(g)
Permissible Misalignment
D D1 D2 L L1 F Size Fastening
Torque
(N·m)
Angular
(˚)
Parallel
(mm)
End-
play
(mm)
SDA-22 Cylinder-shaped 22.2 8.3 - 28.3 6.3 3 M3 0.7 1.1 2.2 12,000 1.3×10-6 400 18 1.5 0.12 ±0.2
SDA-26 Cylinder-shaped 26.6 10.5 - 31.7 7.4 3.6 M4 1.7 1.5 3 12,000 3.2×10-6 600 32 1.5 0.15 ±0.3
SDA-31 Cylinder-shaped 31.8 12.7 - 36.1 7.2 3.6 M4 1.7 3 6 10,000 5.5×10-6 1,300 38 1.5 0.15 ±0.4
SDAA-42 Flange-shaped 42.5 18 29.3 50 13.4 4.6 M4 1.7 7 14 8,000 2.7×10-5 2,000 105 1.5 0.18 ±0.5
SDAB-42 Flange-shaped 42.5 18 29.3 57.9 13.4 4.6 M4 1.7 7 14 8,000 2.8×10-5 2,000 110 1.5 0.18 ±0.5
SDAC-42 Flange-shaped 42.5 18 29.3 67.3 13.4 4.6 M4 1.7 7 14 8,000 2.9×10-5 2,000 115 1.5 0.18 ±0.5
SDAA-47 Flange-shaped 47 20 33 58.1 13.9 4.5 M5 4 12 24 8,000 4.2×10-5 4,000 140 1.5 0.2 ±0.5
SDAB-47 Flange-shaped 47 20 33 85 13.9 4.5 M5 4 12 24 8,000 4.7×10-5 4,000 160 1.5 0.2 ±0.5
SDAA-54 Flange-shaped 54 24.3 38.5 71.2 19 5.8 M5 4 22 44 7,500 9.0×10-5 7,000 230 1.5 0.2 ±0.5
SDAB-54 Flange-shaped 54 24.3 38.5 85.1 19 5.8 M5 4 22 44 7,500 1.1×10-4 7,000 250 1.5 0.2 ±0.5
SDA-64 Flange-shaped 64 25.8 48 89.9 26 8 M8 15 31 62 7,000 2.7×10-4 11,000 450 1.5 0.3 ±0.5
  • The Moment of Inertia and Mass values are based on products with max. Inner diameter.
  • Non-standard lengthy middle body type can be customized.
  • Max. torque/rated torque is the value regarding to a coupling’s self-durability and is not related to slip-torque between the coupling bore and the shaft. (In general, the clamping force on set-screw type is weaker, therefore it is recommended that an additional keyway is processed for the enhanced clamping force.)
Standard Inner Diameter (ID)
Model Standard Inner Diameter (d1, d2) (mm)
3 4 4.5 5 6 6.35 7 8 9 9.525 10 11 12 12.7 14 15 15.875 16 17 18 19 20 21 22 24 25 26 28 30
SD□□-16
SD□□-19
SD□□-22 ●★ ●★
SD□□-26
SD□□-31 ●★ ●★
SD□□-42
SD□□-47
SD□□-54
SD□□-64 ●★ ●★ ●★ ●★
  • The recommended shaft tolerance is h7.
  • Custom process (e.g. non-standard Inner diameter, special tolerance etc.) is also available upon a special request in prior to order placement.
  • Keyway is available. (Optional)
  • Due to interference of the middle parts, make sure the shaft is only inserted into L1 depth for IDs with ★ mark. Consult us first if you're concerned about misalignment.