Disk Type
SD Series

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SD Series

Go to SD Series(Index)

Double 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 (W)
D D1 L L1 L3 F Size Fastening
Torque
(N·m)
Angular
(˚)
Parallel
(mm)
End-
play
(mm)
SDWAS-19C 19 8.5 23.3 8.7 - 2.9 M2.6 1 0.9 1.8 14,000 1.6 x 10-6 300 37 1 0.05 ±0.2 X
SDWBS-19C 19 8.5 26.3 8.7 - 2.9 M2.6 1 0.9 1.8 14,000 2.0 x 10-6 300 39 1 0.05 ±0.2 X
SDWAS-22C 22.2 9 25 8.7 - 2.8 M2.6 1 1.1 2.2 10,000 3.3 x 10-6 400 47 1.5 0.12 ±0.2 X
SDWBS-22C 22.2 9 27.2 8.7 - 2.8 M2.6 1 1.1 2.2 10,000 3.5 x 10-6 400 50 1.5 0.12 ±0.2 X
SDWAS-26C 26.6 12.2 32.5 10.7 - 3.4 M3 1.5 1.5 3 10,000 8.5 x 10-6 600 92 1.5 0.15 ±0.3 X
SDWAS-31C 31.8 14.4 33.5 11.6 - 3.7 M3 1.5 3 6 8,000 1.9 x 10-5 1,300 140 1.5 0.15 ±0.4 X
SDWBS-31C 31.8 14.4 38.5 11.6 - 3.7 M3 1.5 3 6 8,000 2.2 x 10-5 1,300 162 1.5 0.15 ±0.4 X
SDWAS-35C 35 16.2 34.6 12.7 - 4.4 M4 2.5 4 8 8,000 3.0 x 10-5 1,500 165 1.5 0.16 ±0.4 X
SDWCS-35C 35 16.2 38.1 12.7 - 4.4 M4 2.5 4 8 8,000 3.4 x 10-5 1,500 198 1.5 0.16 ±0.4 X
SDWAS-39C 39 17 39.5 13.7 - 4.3 M4 2.5 5 10 8,000 5.3 x 10-5 1,800 257 1.5 0.18 ±0.4 X
SDWCS-39C 39 17 45 13.7 - 4.3 M4 2.5 5 10 8,000 6.0 x 10-5 1,800 297 1.5 0.18 ±0.4 X
SDWCS-42C 42.5 18 46.2 13.7 - 4.3 M4 2.5 7 14 8,000 8.3 x 10-5 2,000 324 1.5 0.18 ±0.5 X
SDWCS-47C 47 20.4 50.7 16 - 5.2 M4 2.5 12 24 7,500 1.4 x 10-4 4,000 432 1.5 0.2 ±0.5 X
SDWBS-54C 54 25 52 19 13 6.3 M5 4 22 44 7,500 2.8 x 10-4 7,000 675 1.5 0.2 ±0.5
SDWCS-54C 54 25 58 19 13 6.3 M5 4 22 44 7,500 3.0 x 10-4 7,000 756 1.5 0.2 ±0.5
SDWAS-64C 64 25.8 73 26 15.2 7.5 M6 8 31 62 6,500 6.8 x 10-4 11,000 1,200 1.5 0.3 ±0.5
SDWS-80C 80 35.8 81.8 29.7 19 9.4 M8 20 75 150 6,000 1.9 x 10-3 20,000 2,100 2 0.4 ±0.6
SDWCS-80C 80 32 98.3 29.7 19 9.4 M8 20 75 150 6,000 2.4 x 10-3 20,000 2,600 2 0.5 ±0.6
SDWS-90C 94.5 41.6 98.9 30.4 19 9.3 M8 20 150 300 6,000 4.2 x 10-3 35,000 3,100 2 0.4 ±0.8
  • 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
SDW□S-19C
SDW□S-22C ●★ ●★
SDW□S-26C
SDW□S-31C ●★
SDW□S-35C
SDW□S-39C
SDW□S-42C ●★ ●★
SDW□S-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
SDW□S-54C
SDW□S-64C ●★ ●★ ●★
SDW□S-80C
SDW□S-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 a different kind of fastening screw is used (body material or surface treatment). 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
SDW□S-19C 1.8 0.8 1.2 1.2
SDW□S-22C 2.2 0.8 1.2 1.2 1.5 1.8
SDW□S-26C 3 1.6 1.6 2 2 2.5 2.5 2.8
SDW□S-31C 6 1.3 1.4 2.5 2.7 3 3 3.5 4 5 5 6
SDW□S-35C 8 1 1 1.6 2.2 3 3 4 5 5.4 6 7.5
SDW□S-39C 10 3 3.5 3.5 3.8 4.2 5.5 6.4 8 9
SDW□S-42C 14 3.2 4 4.2 3 4.8 6 7 9.5 10 10 11 12 13
SDW□S-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
SDW□S-54C 44 8 9.4 11 11 13 15 15 17 17 18 20 23 25 26 27
SDW□S-64C 62 10 14 15 16 17 18 19.5 22 24 34 36 40 42 45 46 50
SDW□S-80C 150 52 53 57 60 68 70 75 84 92 98 101 110 114 118 122
SDW□S-90C 300 78 88 101 103 105 111 117 130 137 137 150