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Single Disc Couplings
Ruland single disc couplings are comprised of two anodized aluminum hubs and one set of stainless steel disc springs. This design allows them to be used in confined spaces where other styles of coupling may not be able to fit. The single set of disc springs does not allow for any parallel misalignment. 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:
DCS16-12MM-1/4\"-A
DCS16-12MM-1/4"-A
As low as
$62.13
$91.12
Ruland DCS16-12MM-1/4"-A, 12mm x 1/4" Single Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.031" (26.2mm) Length
Download CAD File:
DCS16-12MM-3/8\"-A
DCS16-12MM-3/8"-A
As low as
$62.13
$91.12
Ruland DCS16-12MM-3/8"-A, 12mm x 3/8" Single Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.031" (26.2mm) Length
Download CAD File:
DCS16-12MM-5/16\"-A
DCS16-12MM-5/16"-A
As low as
$62.13
$91.12
Ruland DCS16-12MM-5/16"-A, 12mm x 5/16" Single Disc Coupling, Aluminum, Clamp Style, 1.000" (25.4mm) OD, 1.031" (26.2mm) Length
Download CAD File:
DCS21-12MM-3/8\"-A
DCS21-12MM-3/8"-A
As low as
$67.07
$98.37
Ruland DCS21-12MM-3/8"-A, 12mm x 3/8" Single Disc Coupling, Aluminum, Clamp Style, 1.313" (33.3mm) OD, 1.313" (33.3mm) Length
Download CAD File:
DCS21-12MM-5/16\"-A
DCS21-12MM-5/16"-A
As low as
$67.07
$98.37
Ruland DCS21-12MM-5/16"-A, 12mm x 5/16" Single Disc Coupling, Aluminum, Clamp Style, 1.313" (33.3mm) OD, 1.313" (33.3mm) Length
Download CAD File:
DCS26-12MM-3/8\"-A
DCS26-12MM-3/8"-A
As low as
$75.87
$111.27
Ruland DCS26-12MM-3/8"-A, 12mm x 3/8" Single Disc Coupling, Aluminum, Clamp Style, 1.625" (41.3mm) OD, 1.563" (39.7mm) Length
Download CAD File:
DCSK16-12MM-1/4\"-A
DCSK16-12MM-1/4"-A
As low as
$73.98
$108.50
Ruland DCSK16-12MM-1/4"-A, 12mm x 1/4" Single Disc Coupling, Aluminum, Clamp Style With Keyway, 1.000" (25.4mm) OD, 1.031" (26.2mm) Length
Download CAD File:
DCSK16-12MM-3/8\"-A
DCSK16-12MM-3/8"-A
As low as
$73.98
$108.50
Ruland DCSK16-12MM-3/8"-A, 12mm x 3/8" Single Disc Coupling, Aluminum, Clamp Style With Keyway, 1.000" (25.4mm) OD, 1.031" (26.2mm) Length
Download CAD File:
DCSK16-12MM-5/16\"-A
DCSK16-12MM-5/16"-A
As low as
$73.98
$108.50
Ruland DCSK16-12MM-5/16"-A, 12mm x 5/16" Single Disc Coupling, Aluminum, Clamp Style With Keyway, 1.000" (25.4mm) OD, 1.031" (26.2mm) Length
Download CAD File:
DCSK21-12MM-3/8\"-A
DCSK21-12MM-3/8"-A
As low as
$80.91
$118.67
Ruland DCSK21-12MM-3/8"-A, 12mm x 3/8" Single Disc Coupling, Aluminum, Clamp Style With Keyway, 1.313" (33.3mm) OD, 1.313" (33.3mm) Length
Download CAD File:
DCSK21-12MM-5/16\"-A
DCSK21-12MM-5/16"-A
As low as
$80.91
$118.67
Ruland DCSK21-12MM-5/16"-A, 12mm x 5/16" Single Disc Coupling, Aluminum, Clamp Style With Keyway, 1.313" (33.3mm) OD, 1.313" (33.3mm) Length
Download CAD File:
DCSK26-12MM-3/8\"-A
DCSK26-12MM-3/8"-A
As low as
$93.35
$136.92
Ruland DCSK26-12MM-3/8"-A, 12mm x 3/8" Single Disc Coupling, Aluminum, Clamp Style With Keyway, 1.625" (41.3mm) OD, 1.563" (39.7mm) Length
Download CAD File:
MDCS25-12-10-A
MDCS25-12-10-A
As low as
$62.13
$91.12
Ruland MDCS25-12-10-A, 12mm x 10mm Single Disc Coupling, Aluminum, Clamp Style, 25.4mm OD, 26.2mm Length
Download CAD File:
MDCS25-12-11-A
MDCS25-12-11-A
As low as
$62.13
$91.12
Ruland MDCS25-12-11-A, 12mm x 11mm Single Disc Coupling, Aluminum, Clamp Style, 25.4mm OD, 26.2mm Length
Download CAD File:
MDCS25-12-12-A
MDCS25-12-12-A
As low as
$62.13
$91.12
Ruland MDCS25-12-12-A, 12mm x 12mm Single Disc Coupling, Aluminum, Clamp Style, 25.4mm OD, 26.2mm Length
Download CAD File:
MDCS25-12-6-A
MDCS25-12-6-A
As low as
$62.13
$91.12
Ruland MDCS25-12-6-A, 12mm x 6mm Single Disc Coupling, Aluminum, Clamp Style, 25.4mm OD, 26.2mm Length
Download CAD File:
MDCS25-12-7-A
MDCS25-12-7-A
As low as
$62.13
$91.12
Ruland MDCS25-12-7-A, 12mm x 7mm Single Disc Coupling, Aluminum, Clamp Style, 25.4mm OD, 26.2mm Length
Download CAD File:
MDCS25-12-8-A
MDCS25-12-8-A
As low as
$62.13
$91.12
Ruland MDCS25-12-8-A, 12mm x 8mm Single Disc Coupling, Aluminum, Clamp Style, 25.4mm OD, 26.2mm Length
Download CAD File:
MDCS25-12-9-A
MDCS25-12-9-A
As low as
$62.13
$91.12
Ruland MDCS25-12-9-A, 12mm x 9mm Single Disc Coupling, Aluminum, Clamp Style, 25.4mm OD, 26.2mm Length
Download CAD File:
MDCS33-12-10-A
MDCS33-12-10-A
As low as
$67.07
$98.37
Ruland MDCS33-12-10-A, 12mm x 10mm Single Disc Coupling, Aluminum, Clamp Style, 33.3mm OD, 33.3mm Length
Download CAD File:
MDCS33-12-11-A
MDCS33-12-11-A
As low as
$67.07
$98.37
Ruland MDCS33-12-11-A, 12mm x 11mm Single Disc Coupling, Aluminum, Clamp Style, 33.3mm OD, 33.3mm Length
Download CAD File:
MDCS33-12-12-A
MDCS33-12-12-A
As low as
$67.07
$98.37
Ruland MDCS33-12-12-A, 12mm x 12mm Single Disc Coupling, Aluminum, Clamp Style, 33.3mm OD, 33.3mm Length
Download CAD File:
MDCS33-12-8-A
MDCS33-12-8-A
As low as
$67.07
$98.37
Ruland MDCS33-12-8-A, 12mm x 8mm Single Disc Coupling, Aluminum, Clamp Style, 33.3mm OD, 33.3mm Length
Download CAD File:
MDCS33-12-9-A
MDCS33-12-9-A
As low as
$67.07
$98.37
Ruland MDCS33-12-9-A, 12mm x 9mm Single Disc Coupling, Aluminum, Clamp Style, 33.3mm OD, 33.3mm Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
DCS16-12MM-1/4"-A
12 mm
0.2500 in
1.031 in (26.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
DCS16-12MM-3/8"-A
12 mm
0.3750 in
1.031 in (26.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
DCS16-12MM-5/16"-A
12 mm
0.3125 in
1.031 in (26.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
DCS21-12MM-3/8"-A
12 mm
0.3750 in
1.313 in (33.3 mm)
Aluminum
1.313 in (33.3 mm)
10,000 RPM
DCS21-12MM-5/16"-A
12 mm
0.3125 in
1.313 in (33.3 mm)
Aluminum
1.313 in (33.3 mm)
10,000 RPM
DCS26-12MM-3/8"-A
12 mm
0.3750 in
1.563 in (39.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
DCSK16-12MM-1/4"-A
12 mm
0.2500 in
1.031 in (26.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
DCSK16-12MM-3/8"-A
12 mm
0.3750 in
1.031 in (26.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
DCSK16-12MM-5/16"-A
12 mm
0.3125 in
1.031 in (26.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
DCSK21-12MM-3/8"-A
12 mm
0.3750 in
1.313 in (33.3 mm)
Aluminum
1.313 in (33.3 mm)
10,000 RPM
DCSK21-12MM-5/16"-A
12 mm
0.3125 in
1.313 in (33.3 mm)
Aluminum
1.313 in (33.3 mm)
10,000 RPM
DCSK26-12MM-3/8"-A
12 mm
0.3750 in
1.563 in (39.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
MDCS25-12-10-A
12 mm
10 mm
26.2 mm
Aluminum
25.4 mm
10,000 RPM
MDCS25-12-11-A
12 mm
11 mm
26.2 mm
Aluminum
25.4 mm
10,000 RPM
MDCS25-12-12-A
12 mm
12 mm
26.2 mm
Aluminum
25.4 mm
10,000 RPM
MDCS25-12-6-A
12 mm
6 mm
26.2 mm
Aluminum
25.4 mm
10,000 RPM
MDCS25-12-7-A
12 mm
7 mm
26.2 mm
Aluminum
25.4 mm
10,000 RPM
MDCS25-12-8-A
12 mm
8 mm
26.2 mm
Aluminum
25.4 mm
10,000 RPM
MDCS25-12-9-A
12 mm
9 mm
26.2 mm
Aluminum
25.4 mm
10,000 RPM
MDCS33-12-10-A
12 mm
10 mm
33.3 mm
Aluminum
33.3 mm
10,000 RPM
MDCS33-12-11-A
12 mm
11 mm
33.3 mm
Aluminum
33.3 mm
10,000 RPM
MDCS33-12-12-A
12 mm
12 mm
33.3 mm
Aluminum
33.3 mm
10,000 RPM
MDCS33-12-8-A
12 mm
8 mm
33.3 mm
Aluminum
33.3 mm
10,000 RPM
MDCS33-12-9-A
12 mm
9 mm
33.3 mm
Aluminum
33.3 mm
10,000 RPM
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