Shaft Coupling

Coupling is a core component that transmits power and motion
from the driving shaft to the driven part while absorbing misalignment
and any possible factors that could reduce efficiency of machines
(e.g. vibration, noise, electric current, etc.)

SCD Series Go to SCD Series(Index)

Concentricity Disk Type Coupling [SCDW]

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

Side-clamp

Dimensions / Performance
Model CAD d1, d2 Size (±0.3mm) Screw Permissible
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)
SCDW-68C 18~25 68 47 69.8 25 7 M6 14 90/100 14,000 0.54X10-3 4.9X104 820 2 0.25 ±1.0
28~35 56
SCDW-78C 22~25 78 52 85.4 30 8.5 M8 34 200 13,000 1.5X10-3 1.0X105 1,700 2 0.3 ±1.0
28~35 70
38 74
SCDW-88C 25~32 88 66 86.6 30 8.5 M8 34 250/300 12,000 2.1X10-3 1.2X105 1,910 2 0.3 ±1.2
35~42 74
  • The Moment of Inertia and Mass values are based on products with max.Inner diameter.
  • The permissible torque is determined by its inner diameter size. Please refer to the bottom of the page for more details.
Standard Inner Diameter (ID)
Model Permissible
Torque
(N·m)		 Standard Inner Diameter (d1, d2) (mm)
18 19 20 22 24 25 26 28 30 32 35 38 40 42
SCDW-68C 90 ● ●
100 ● ● ● ● ● ● ● ● ●
SCDW-78C 200 ● ● ● ● ● ● ● ● ●
SCDW-88C 250 ● ● ●
300 ● ● ● ● ● ●
  • 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.
  • The permissible torque of a complete SCD coupling should be considered according to the smaller inner diameter’s value.
  • Keyway is NOT available for all sized SCD series.