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Double Disc Couplings
Ruland double disc couplings are comprised of two anodized aluminum hubs, two sets of stainless steel disc springs, and a center spacer. This design allows the sets of disc springs to bend independent of each other to accommodate all forms of misalignment, including parallel. Center spacers are available in anodized aluminum or acetal for electrical isolation. Ruland disc couplings are zero-backlash and have a balanced design for reduced vibration at speeds up to 10,000 RPM. They are a simple assembly with few moving parts, reducing the risk of backlash and premature failure. Clamp and set screw hubs are available in bore sizes from 1/8” to 1-1/4” and 3mm to 32mm.
Features High torque
Balanced design for high RPM
Low inertia
No maintenance
High torsional stiffness
Constant velocity
Long life
Zero backlash
RoHS3 and REACH Compliant
Maximum speed: 10,000 RPM
Temperature Range: -10°F to 200°F
How to Specify Part numbers are in the following format with numbers representing sixteenths of an inch or millimeters:
Products
Download CAD File:
DCD44-1 1/2\"-20MM-A
DCD44-1 1/2"-20MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-20MM-A, 1 1/2" x 20mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-22MM-A
DCD44-1 1/2"-22MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-22MM-A, 1 1/2" x 22mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-24MM-A
DCD44-1 1/2"-24MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-24MM-A, 1 1/2" x 24mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-25MM-A
DCD44-1 1/2"-25MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-25MM-A, 1 1/2" x 25mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-28MM-A
DCD44-1 1/2"-28MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-28MM-A, 1 1/2" x 28mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-30MM-A
DCD44-1 1/2"-30MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-30MM-A, 1 1/2" x 30mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-32MM-A
DCD44-1 1/2"-32MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-32MM-A, 1 1/2" x 32mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-35MM-A
DCD44-1 1/2"-35MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-35MM-A, 1 1/2" x 35mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-1 1/2\"-38MM-A
DCD44-1 1/2"-38MM-A
As low as
$178.18
$261.33
Ruland DCD44-1 1/2"-38MM-A, 1 1/2" x 38mm Double Disc Coupling, Aluminum, Clamp Style, 2.750" (69.9mm) OD, 3.531" (89.7mm) Length
Download CAD File:
DCD44-24-12-A
DCD44-24-12-A
As low as
$178.18
$261.33
Ruland DCD44-24-12-A, 1 1/2" x 3/4" Double Disc Coupling, Aluminum, Clamp Style, 2.750" OD, 3.531" Length
Download CAD File:
DCD44-24-14-A
DCD44-24-14-A
As low as
$178.18
$261.33
Ruland DCD44-24-14-A, 1 1/2" x 7/8" Double Disc Coupling, Aluminum, Clamp Style, 2.750" OD, 3.531" Length
Download CAD File:
DCD44-24-16-A
DCD44-24-16-A
As low as
$178.18
$261.33
Ruland DCD44-24-16-A, 1 1/2" x 1" Double Disc Coupling, Aluminum, Clamp Style, 2.750" OD, 3.531" Length
Download CAD File:
DCD44-24-18-A
DCD44-24-18-A
As low as
$178.18
$261.33
Ruland DCD44-24-18-A, 1 1/2" x 1 1/8" Double Disc Coupling, Aluminum, Clamp Style, 2.750" OD, 3.531" Length
Download CAD File:
DCD44-24-20-A
DCD44-24-20-A
As low as
$178.18
$261.33
Ruland DCD44-24-20-A, 1 1/2" x 1 1/4" Double Disc Coupling, Aluminum, Clamp Style, 2.750" OD, 3.531" Length
Download CAD File:
DCD44-24-22-A
DCD44-24-22-A
As low as
$178.18
$261.33
Ruland DCD44-24-22-A, 1 1/2" x 1 3/8" Double Disc Coupling, Aluminum, Clamp Style, 2.750" OD, 3.531" Length
Download CAD File:
DCD44-24-24-A
DCD44-24-24-A
As low as
$178.18
$261.33
Ruland DCD44-24-24-A, 1 1/2" x 1 1/2" Double Disc Coupling, Aluminum, Clamp Style, 2.750" OD, 3.531" Length
Download CAD File:
DCD50-1 1/2\"-25MM-A
DCD50-1 1/2"-25MM-A
As low as
$204.90
$300.52
Ruland DCD50-1 1/2"-25MM-A, 1 1/2" x 25mm Double Disc Coupling, Aluminum, Clamp Style, 3.125" (79.4mm) OD, 3.938" (100.0mm) Length
Download CAD File:
DCD50-1 1/2\"-28MM-A
DCD50-1 1/2"-28MM-A
As low as
$204.90
$300.52
Ruland DCD50-1 1/2"-28MM-A, 1 1/2" x 28mm Double Disc Coupling, Aluminum, Clamp Style, 3.125" (79.4mm) OD, 3.938" (100.0mm) Length
Download CAD File:
DCD50-1 1/2\"-30MM-A
DCD50-1 1/2"-30MM-A
As low as
$204.90
$300.52
Ruland DCD50-1 1/2"-30MM-A, 1 1/2" x 30mm Double Disc Coupling, Aluminum, Clamp Style, 3.125" (79.4mm) OD, 3.938" (100.0mm) Length
Download CAD File:
DCD50-1 1/2\"-32MM-A
DCD50-1 1/2"-32MM-A
As low as
$204.90
$300.52
Ruland DCD50-1 1/2"-32MM-A, 1 1/2" x 32mm Double Disc Coupling, Aluminum, Clamp Style, 3.125" (79.4mm) OD, 3.938" (100.0mm) Length
Download CAD File:
DCD50-1 1/2\"-35MM-A
DCD50-1 1/2"-35MM-A
As low as
$204.90
$300.52
Ruland DCD50-1 1/2"-35MM-A, 1 1/2" x 35mm Double Disc Coupling, Aluminum, Clamp Style, 3.125" (79.4mm) OD, 3.938" (100.0mm) Length
Download CAD File:
DCD50-1 1/2\"-38MM-A
DCD50-1 1/2"-38MM-A
As low as
$204.90
$300.52
Ruland DCD50-1 1/2"-38MM-A, 1 1/2" x 38mm Double Disc Coupling, Aluminum, Clamp Style, 3.125" (79.4mm) OD, 3.938" (100.0mm) Length
Download CAD File:
DCD50-24-16-A
DCD50-24-16-A
As low as
$204.90
$300.52
Ruland DCD50-24-16-A, 1 1/2" x 1" Double Disc Coupling, Aluminum, Clamp Style, 3.125" OD, 3.938" Length
Download CAD File:
DCD50-24-18-A
DCD50-24-18-A
As low as
$204.90
$300.52
Ruland DCD50-24-18-A, 1 1/2" x 1 1/8" Double Disc Coupling, Aluminum, Clamp Style, 3.125" OD, 3.938" Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
DCD44-1 1/2"-20MM-A
1.5000 in
20 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-22MM-A
1.5000 in
22 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-24MM-A
1.5000 in
24 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-25MM-A
1.5000 in
25 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-28MM-A
1.5000 in
28 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-30MM-A
1.5000 in
30 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-32MM-A
1.5000 in
32 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-35MM-A
1.5000 in
35 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-1 1/2"-38MM-A
1.5000 in
38 mm
3.531 in (89.7 mm)
Aluminum
2.750 in (69.9 mm)
10,000 RPM
DCD44-24-12-A
1.5000 in
0.7500 in
3.531 in
Aluminum
2.750 in
10,000 RPM
DCD44-24-14-A
1.5000 in
0.8750 in
3.531 in
Aluminum
2.750 in
10,000 RPM
DCD44-24-16-A
1.5000 in
1.0000 in
3.531 in
Aluminum
2.750 in
10,000 RPM
DCD44-24-18-A
1.5000 in
1.1250 in
3.531 in
Aluminum
2.750 in
10,000 RPM
DCD44-24-20-A
1.5000 in
1.2500 in
3.531 in
Aluminum
2.750 in
10,000 RPM
DCD44-24-22-A
1.5000 in
1.3750 in
3.531 in
Aluminum
2.750 in
10,000 RPM
DCD44-24-24-A
1.5000 in
1.5000 in
3.531 in
Aluminum
2.750 in
10,000 RPM
DCD50-1 1/2"-25MM-A
1.5000 in
25 mm
3.938 in (100.0 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
DCD50-1 1/2"-28MM-A
1.5000 in
28 mm
3.938 in (100.0 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
DCD50-1 1/2"-30MM-A
1.5000 in
30 mm
3.938 in (100.0 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
DCD50-1 1/2"-32MM-A
1.5000 in
32 mm
3.938 in (100.0 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
DCD50-1 1/2"-35MM-A
1.5000 in
35 mm
3.938 in (100.0 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
DCD50-1 1/2"-38MM-A
1.5000 in
38 mm
3.938 in (100.0 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
DCD50-24-16-A
1.5000 in
1.0000 in
3.938 in
Aluminum
3.125 in
10,000 RPM
DCD50-24-18-A
1.5000 in
1.1250 in
3.938 in
Aluminum
3.125 in
10,000 RPM
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Bore (B1)
1.5000 in
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