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Beam Couplings for Encoders
Ruland 4-beam couplings are manufactured from a single piece of aluminum or stainless steel with multiple spiral (helical) cuts allowing for a zero-backlash encoder coupling with higher accuracy and better overall misalignment capabilities than traditional single beam couplings. They are designed with extra flexibility to provide reduced bearing loads, which is critical in encoders which have small sensitive bearings. Ruland 4-beam couplings have a balanced design for reduced vibration at speeds up to 6,000 RPM. Ruland manufactures two series of 4-beam couplings, P and MW, giving designers a variety of performance and dimensional characteristics to choose from. Ruland manufactures 4-beam couplings in our Marlborough, Massachusetts factory with bore sizes ranging from 3/32” to 1/2” or 3mm to 12mm.
Products
Download CAD File:
MWC25-8-6-A
MWC25-8-6-A
As low as
$40.03
$58.71
Ruland MWC25-8-6-A, 8mm x 6mm Four Beam Coupling, Aluminum, Clamp Style, 25.0mm OD, 30.0mm Length
Download CAD File:
MWC25-8-6-SS
MWC25-8-6-SS
As low as
$99.53
$145.97
Ruland MWC25-8-6-SS, 8mm x 6mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.0mm OD, 30.0mm Length
Download CAD File:
MWC25-8-7-A
MWC25-8-7-A
As low as
$40.03
$58.71
Ruland MWC25-8-7-A, 8mm x 7mm Four Beam Coupling, Aluminum, Clamp Style, 25.0mm OD, 30.0mm Length
Download CAD File:
MWC25-8-7-SS
MWC25-8-7-SS
As low as
$99.53
$145.97
Ruland MWC25-8-7-SS, 8mm x 7mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.0mm OD, 30.0mm Length
Download CAD File:
MWC25-8-8-A
MWC25-8-8-A
As low as
$40.03
$58.71
Ruland MWC25-8-8-A, 8mm x 8mm Four Beam Coupling, Aluminum, Clamp Style, 25.0mm OD, 30.0mm Length
Download CAD File:
MWC25-8-8-SS
MWC25-8-8-SS
As low as
$99.53
$145.97
Ruland MWC25-8-8-SS, 8mm x 8mm Four Beam Coupling, Stainless Steel, Clamp Style, 25.0mm OD, 30.0mm Length
Download CAD File:
MWC25-8MM-1/4\"-A
MWC25-8MM-1/4"-A
As low as
$40.03
$58.71
Ruland MWC25-8MM-1/4"-A, 8mm x 1/4" Four Beam Coupling, Aluminum, Clamp Style, 0.984" (25.0mm) OD, 1.181" (30.0mm) Length
Download CAD File:
MWC25-8MM-1/4\"-SS
MWC25-8MM-1/4"-SS
As low as
$99.53
$145.97
Ruland MWC25-8MM-1/4"-SS, 8mm x 1/4" Four Beam Coupling, Stainless Steel, Clamp Style, 0.984" (25.0mm) OD, 1.181" (30.0mm) Length
Download CAD File:
MWC30-1/2\"-1/2\"-A
MWC30-1/2"-1/2"-A
As low as
$59.65
$87.49
Ruland MWC30-1/2"-1/2"-A, 1/2" x 1/2" Four Beam Coupling, Aluminum, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-1/2\"-SS
MWC30-1/2"-1/2"-SS
As low as
$128.56
$188.55
Ruland MWC30-1/2"-1/2"-SS, 1/2" x 1/2" Four Beam Coupling, Stainless Steel, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-10MM-A
MWC30-1/2"-10MM-A
As low as
$59.65
$87.49
Ruland MWC30-1/2"-10MM-A, 1/2" x 10mm Four Beam Coupling, Aluminum, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-10MM-SS
MWC30-1/2"-10MM-SS
As low as
$128.56
$188.55
Ruland MWC30-1/2"-10MM-SS, 1/2" x 10mm Four Beam Coupling, Stainless Steel, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-11MM-A
MWC30-1/2"-11MM-A
As low as
$59.65
$87.49
Ruland MWC30-1/2"-11MM-A, 1/2" x 11mm Four Beam Coupling, Aluminum, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-11MM-SS
MWC30-1/2"-11MM-SS
As low as
$128.56
$188.55
Ruland MWC30-1/2"-11MM-SS, 1/2" x 11mm Four Beam Coupling, Stainless Steel, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-12MM-A
MWC30-1/2"-12MM-A
As low as
$59.65
$87.49
Ruland MWC30-1/2"-12MM-A, 1/2" x 12mm Four Beam Coupling, Aluminum, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-12MM-SS
MWC30-1/2"-12MM-SS
As low as
$128.56
$188.55
Ruland MWC30-1/2"-12MM-SS, 1/2" x 12mm Four Beam Coupling, Stainless Steel, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-3/8\"-A
MWC30-1/2"-3/8"-A
As low as
$59.65
$87.49
Ruland MWC30-1/2"-3/8"-A, 1/2" x 3/8" Four Beam Coupling, Aluminum, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-3/8\"-SS
MWC30-1/2"-3/8"-SS
As low as
$128.56
$188.55
Ruland MWC30-1/2"-3/8"-SS, 1/2" x 3/8" Four Beam Coupling, Stainless Steel, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-8MM-A
MWC30-1/2"-8MM-A
As low as
$59.65
$87.49
Ruland MWC30-1/2"-8MM-A, 1/2" x 8mm Four Beam Coupling, Aluminum, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-8MM-SS
MWC30-1/2"-8MM-SS
As low as
$128.56
$188.55
Ruland MWC30-1/2"-8MM-SS, 1/2" x 8mm Four Beam Coupling, Stainless Steel, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-9MM-A
MWC30-1/2"-9MM-A
As low as
$59.65
$87.49
Ruland MWC30-1/2"-9MM-A, 1/2" x 9mm Four Beam Coupling, Aluminum, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-1/2\"-9MM-SS
MWC30-1/2"-9MM-SS
As low as
$128.56
$188.55
Ruland MWC30-1/2"-9MM-SS, 1/2" x 9mm Four Beam Coupling, Stainless Steel, Clamp Style, 1.181" (30.0mm) OD, 1.496" (38.0mm) Length
Download CAD File:
MWC30-8-8-A
MWC30-8-8-A
As low as
$59.65
$87.49
Ruland MWC30-8-8-A, 8mm x 8mm Four Beam Coupling, Aluminum, Clamp Style, 30.0mm OD, 38.0mm Length
Download CAD File:
MWC30-8-8-SS
MWC30-8-8-SS
As low as
$128.56
$188.55
Ruland MWC30-8-8-SS, 8mm x 8mm Four Beam Coupling, Stainless Steel, Clamp Style, 30.0mm OD, 38.0mm Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
MWC25-8-6-A
8 mm
6 mm
30.0 mm
Aluminum
25.0 mm
6,000 RPM
MWC25-8-6-SS
8 mm
6 mm
30.0 mm
303 Stainless Steel
25.0 mm
6,000 RPM
MWC25-8-7-A
8 mm
7 mm
30.0 mm
Aluminum
25.0 mm
6,000 RPM
MWC25-8-7-SS
8 mm
7 mm
30.0 mm
303 Stainless Steel
25.0 mm
6,000 RPM
MWC25-8-8-A
8 mm
8 mm
30.0 mm
Aluminum
25.0 mm
6,000 RPM
MWC25-8-8-SS
8 mm
8 mm
30.0 mm
303 Stainless Steel
25.0 mm
6,000 RPM
MWC25-8MM-1/4"-A
8 mm
0.2500 in
1.181 in (30.0 mm)
Aluminum
0.984 in (25.0 mm)
6,000 RPM
MWC25-8MM-1/4"-SS
8 mm
0.2500 in
1.181 in (30.0 mm)
303 Stainless Steel
0.984 in (25.0 mm)
6,000 RPM
MWC30-1/2"-1/2"-A
0.5000 in
0.5000 in
1.496 in (38.0 mm)
Aluminum
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-1/2"-SS
0.5000 in
0.5000 in
1.496 in (38.0 mm)
303 Stainless Steel
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-10MM-A
0.5000 in
10 mm
1.496 in (38.0 mm)
Aluminum
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-10MM-SS
0.5000 in
10 mm
1.496 in (38.0 mm)
303 Stainless Steel
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-11MM-A
0.5000 in
11 mm
1.496 in (38.0 mm)
Aluminum
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-11MM-SS
0.5000 in
11 mm
1.496 in (38.0 mm)
303 Stainless Steel
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-12MM-A
0.5000 in
12 mm
1.496 in (38.0 mm)
Aluminum
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-12MM-SS
0.5000 in
12 mm
1.496 in (38.0 mm)
303 Stainless Steel
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-3/8"-A
0.5000 in
0.3750 in
1.496 in (38.0 mm)
Aluminum
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-3/8"-SS
0.5000 in
0.3750 in
1.496 in (38.0 mm)
303 Stainless Steel
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-8MM-A
0.5000 in
8 mm
1.496 in (38.0 mm)
Aluminum
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-8MM-SS
0.5000 in
8 mm
1.496 in (38.0 mm)
303 Stainless Steel
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-9MM-A
0.5000 in
9 mm
1.496 in (38.0 mm)
Aluminum
1.181 in (30.0 mm)
6,000 RPM
MWC30-1/2"-9MM-SS
0.5000 in
9 mm
1.496 in (38.0 mm)
303 Stainless Steel
1.181 in (30.0 mm)
6,000 RPM
MWC30-8-8-A
8 mm
8 mm
38.0 mm
Aluminum
30.0 mm
6,000 RPM
MWC30-8-8-SS
8 mm
8 mm
38.0 mm
303 Stainless Steel
30.0 mm
6,000 RPM
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8 mm
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0.5000 in
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