Disk Type
SD Series

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SD Series

Go to SD Series(Index)

Single Disk Type Coupling_Stainless Steel Body

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

Side-clamp

Dimensions / Performance
Model CAD 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 Side-
clamp
Hub
Split
D D1 L L1 L3 F Size Fastening
Torque
(N·m)
Angular
(˚)
Parallel
(mm)
End-
play
(mm)
SDSS-19C 19 8.5 19.3 8.7 - 2.9 M2.6 1 0.9 1.8 14,000 1.0 x 10-6 600 21 1 0.02 ±0.1 X
SDSS-22C 22.2 10 19.7 8.7 - 2.8 M2.6 1 1.1 2.2 10,000 2.5 x 10-6 600 42 1 0.02 ±0.1 X
SDSS-26C 26.6 12.2 24.1 10.7 - 3.4 M3 1.5 1.5 3 10,000 6.0 x 10-6 900 70 1 0.02 ±0.15 X
SDSS-31C 31.8 14.4 26.4 11.6 - 3.7 M3 1.5 3 6 9,000 1.5 x 10-5 1,700 112 1 0.02 ±0.2 X
SDSS-35C 35 16.2 28 12.7 - 4.4 M4 2.5 4 8 8,500 2.5 x 10-5 2,000 135 1 0.02 ±0.2 X
SDSS-39C 39 17 31.3 13.7 - 4.3 M4 2.5 5 10 8,000 4.0 x 10-5 2,300 196 1 0.02 ±0.2 X
SDSS-42C 42.5 18 31.4 13.7 - 4.3 M4 2.5 7 14 8,000 8.5 x 10-5 2,800 266 1 0.02 ±0.25 X
SDSS-47C 47 20.4 36 16 - 5.2 M4 2.5 12 24 8,000 1.4 x 10-4 6,000 392 1 0.02 ±0.25 X
SDSS-54C 54 25 42 19 13 6.3 M5 4 22 44 8,000 2.5 x 10-4 11,000 560 1 0.02 ±0.25
SDSS-64C 64 25.8 57.5 26 15.2 7.5 M6 8 31 62 7,000 6.5 x 10-4 20,000 950 1 0.02 ±0.25
SDSS-80C 80 35.8 66.1 29.7 19 9.4 M8 20 75 150 7,000 1.6 x10-3 40,000 1,800 1 0.02 ±0.4
SDSS-90C 94.5 41.6 68.9 30.4 19 9.3 M8 20 150 300 6,000 3.2 x10-3 60,000 2,400 1 0.02 ±0.5
  • The Moment of Inertia and Mass values are based on products with max. Inner diameter.
  • 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.
Standard Inner Diameter (ID) (19C ~ 47C)
Model Standard Inner Diameter (d1, d2) (mm)
4 4.5 5 6 6.35 7 8 9 9.525 10 11 12 12.7 14 15 15.88 16 17 18 19 20
SDSS-19C
SDSS-22C ●★ ●★
SDSS-26C
SDSS-31C ●★
SDSS-35C
SDSS-39C
SDSS-42C ●★ ●★
SDSS-47C
  • 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.
Standard Inner Diameter (ID) (54C ~ 90C)
Model Standard Inner Diameter (d1, d2) (mm)
10 11 12 12.7 14 15 15.875 16 17 18 19 20 22 24 25 26 28 30 32 35 40 45 50
SDSS-54C
SDSS-64C ●★ ●★ ●★
SDSS-80C ● 
SDSS-90C ●★
  • 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.
  • Side-clamp Hub Split is available (Optional)
Slip Torque
  • The below table shows the actual permissible torque values when the slip torque value is lower than the coupling’s max. torque value.
  • If the slip torque value is lower than the coupling’s max. torque value, please check and compare between the slip torque in the below table and the operating torque value of the connected motor. It is safer to size up the coupling or use a key/keyway when the slip torque value is lower than the motor’s operating torque.
  • The below slip torque values may be subject to change according to different testing conditions. (e.g. shaft tolerance, Surface roughness, or acceleration/deceleration of driving shafts). On the other hand, the values could be affected when different kind of fastening screw is used. Therefore, we recommend you test under the same conditions before mounting.
Model Max. Torque
(N·m)
Slip Torque (N.m) by Inner Diameter (d1, d2)
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
SDSS-19C 1.8 0.8 1.2 1.2
SDSS-22C 2.2 0.8 1.2 1.2 1.5 1.8
SDSS-26C 3 1.6 1.6 2 2 2.5 2.5 2.8
SDSS-31C 6 1.3 1.4 2.5 2.7 3 3 3.5 4 5 5 6
SDSS-35C 8 1 1 1.6 2.2 3 3 4 5 5.4 6 7.5
SDSS-39C 10 3 3.5 3.5 3.8 4.2 5.5 6.4 8 9
SDSS-42C 14 3.2 4 4.2 3 4.8 6 7 9.5 10 10 11 12 13
SDSS-47C 24 3 4.9 6 6 8 8 9 9 9 14 14 15
Model Max. Torque
(N·m)
Slip Torque (N.m) by Inner Diameter (d1, d2)
10 11 12 12.7 14 15 15.875 16 17 18 19 20 22 24 25 26 28 30 32 35 40 45
SDSS-54C 44 8 9.4 11 11 13 15 15 17 17 18 20 23 25 26 27
SDSS-64C 62 10 14 15 16 17 18 19.5 22 24 34 36 40 42 45 46 50
SDSS-80C 150 52 53 57 60 68 70 75 84 92 98 101 110 114 118 122
SDSS-90C 300 78 88 101 103 105 111 117 130 137 137 150