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Bellows Couplings for Automation & Linear Motion
Ruland bellows couplings are made of two lightweight anodized aluminum hubs joined by a flexible stainless steel bellows. The thin walls of the bellows allow the coupling to flex under misalignment while remaining rigid under torsional loads. Engineers designing precision linear systems often prefer to use bellows couplings because they are lightweight, accommodate all forms of misalignment, and have the greatest size-for-size torque and torsional stiffness of any Ruland flexible coupling.
Ruland manufactures bellows couplings with a low inertia, zero-backlash design, making them a suitable option for high torque applications where a rigid coupling is not feasible due to weight or misalignment requirements. They are available in clamp and set screw hubs with or without keyways in bore sizes ranging from 1/8” to 1” and 3mm to 25mm.
Products
Download CAD File:
BC10-5MM-1/8\"-A
BC10-5MM-1/8"-A
As low as
$84.30
$123.64
Ruland BC10-5MM-1/8"-A, 5mm x 1/8" Bellows Coupling, High Stiffness, Aluminum, 0.590" (15.0mm), OD 1.076" (27.3mm) Length
Download CAD File:
BC10-5MM-3/16\"-A
BC10-5MM-3/16"-A
As low as
$84.30
$123.64
Ruland BC10-5MM-3/16"-A, 5mm x 3/16" Bellows Coupling, High Stiffness, Aluminum, 0.590" (15.0mm), OD 1.076" (27.3mm) Length
Download CAD File:
BC12-5MM-3/16\"-A
BC12-5MM-3/16"-A
As low as
$79.05
$115.94
Ruland BC12-5MM-3/16"-A, 5mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC26-18MM-1/2\"-A
BC26-18MM-1/2"-A
As low as
$105.39
$154.57
Ruland BC26-18MM-1/2"-A, 18mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-18MM-3/8\"-A
BC26-18MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-18MM-3/8"-A, 18mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-18MM-5/8\"-A
BC26-18MM-5/8"-A
As low as
$105.39
$154.57
Ruland BC26-18MM-5/8"-A, 18mm x 5/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC32-18MM-1/2\"-A
BC32-18MM-1/2"-A
As low as
$126.47
$185.49
Ruland BC32-18MM-1/2"-A, 18mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
Download CAD File:
BC32-18MM-5/8\"-A
BC32-18MM-5/8"-A
As low as
$126.47
$185.49
Ruland BC32-18MM-5/8"-A, 18mm x 5/8" Bellows Coupling, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
Download CAD File:
BC36-18MM-1/2\"-A
BC36-18MM-1/2"-A
As low as
$172.38
$252.82
Ruland BC36-18MM-1/2"-A, 18mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-18MM-5/8\"-A
BC36-18MM-5/8"-A
As low as
$172.38
$252.82
Ruland BC36-18MM-5/8"-A, 18mm x 5/8" Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK26-18MM-1/2\"-A
BCK26-18MM-1/2"-A
As low as
$135.16
$198.24
Ruland BCK26-18MM-1/2"-A, 18mm x 1/2" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BCK26-18MM-3/8\"-A
BCK26-18MM-3/8"-A
As low as
$135.16
$198.24
Ruland BCK26-18MM-3/8"-A, 18mm x 3/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BCK26-18MM-5/8\"-A
BCK26-18MM-5/8"-A
As low as
$135.16
$198.24
Ruland BCK26-18MM-5/8"-A, 18mm x 5/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BCK32-18MM-1/2\"-A
BCK32-18MM-1/2"-A
As low as
$162.57
$238.43
Ruland BCK32-18MM-1/2"-A, 18mm x 1/2" Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
Download CAD File:
BCK32-18MM-5/8\"-A
BCK32-18MM-5/8"-A
As low as
$162.57
$238.43
Ruland BCK32-18MM-5/8"-A, 18mm x 5/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.000" (50.8mm), OD 2.413" (61.3mm) Length
Download CAD File:
BCK36-18MM-1/2\"-A
BCK36-18MM-1/2"-A
As low as
$199.99
$293.32
Ruland BCK36-18MM-1/2"-A, 18mm x 1/2" Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-18MM-5/8\"-A
BCK36-18MM-5/8"-A
As low as
$199.99
$293.32
Ruland BCK36-18MM-5/8"-A, 18mm x 5/8" Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
MBC15-5-3-A
MBC15-5-3-A
As low as
$84.30
$123.64
Ruland MBC15-5-3-A, 5mm x 3mm Bellows Coupling, High Stiffness, Aluminum, 15.0mm, OD 27.3mm Length
Download CAD File:
MBC15-5-4-A
MBC15-5-4-A
As low as
$84.30
$123.64
Ruland MBC15-5-4-A, 5mm x 4mm Bellows Coupling, High Stiffness, Aluminum, 15.0mm, OD 27.3mm Length
Download CAD File:
MBC15-5-5-A
MBC15-5-5-A
As low as
$84.30
$123.64
Ruland MBC15-5-5-A, 5mm x 5mm Bellows Coupling, High Stiffness, Aluminum, 15.0mm, OD 27.3mm Length
Download CAD File:
MBC19-5-4-A
MBC19-5-4-A
As low as
$79.05
$115.94
Ruland MBC19-5-4-A, 5mm x 4mm Bellows Coupling, Aluminum, Clamp Style, 19.1mm OD, 33.1mm Length
Download CAD File:
MBC19-5-5-A
MBC19-5-5-A
As low as
$79.05
$115.94
Ruland MBC19-5-5-A, 5mm x 5mm Bellows Coupling, Aluminum, Clamp Style, 19.1mm OD, 33.1mm Length
Download CAD File:
MBC41-18-10-A
MBC41-18-10-A
As low as
$105.39
$154.57
Ruland MBC41-18-10-A, 18mm x 10mm Bellows Coupling, High Stiffness, Aluminum, 41.3mm, OD 51.7mm Length
Download CAD File:
MBC41-18-11-A
MBC41-18-11-A
As low as
$105.39
$154.57
Ruland MBC41-18-11-A, 18mm x 11mm Bellows Coupling, High Stiffness, Aluminum, 41.3mm, OD 51.7mm Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
BC10-5MM-1/8"-A
5 mm
0.1250 in
1.076 in (27.3 mm)
Aluminum
0.590 in (15.0 mm)
10,000 RPM
BC10-5MM-3/16"-A
5 mm
0.1875 in
1.076 in (27.3 mm)
Aluminum
0.590 in (15.0 mm)
10,000 RPM
BC12-5MM-3/16"-A
5 mm
0.1875 in
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC26-18MM-1/2"-A
18 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-18MM-3/8"-A
18 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-18MM-5/8"-A
18 mm
0.6250 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC32-18MM-1/2"-A
18 mm
0.5000 in
2.413 in (61.3 mm)
Aluminum
2.000 in (50.8 mm)
10,000 RPM
BC32-18MM-5/8"-A
18 mm
0.6250 in
2.413 in (61.3 mm)
Aluminum
2.000 in (50.8 mm)
10,000 RPM
BC36-18MM-1/2"-A
18 mm
0.5000 in
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-18MM-5/8"-A
18 mm
0.6250 in
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK26-18MM-1/2"-A
18 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BCK26-18MM-3/8"-A
18 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BCK26-18MM-5/8"-A
18 mm
0.6250 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BCK32-18MM-1/2"-A
18 mm
0.5000 in
2.413 in (61.3 mm)
Aluminum
2.000 in (50.8 mm)
10,000 RPM
BCK32-18MM-5/8"-A
18 mm
0.6250 in
2.413 in (61.3 mm)
Aluminum
2.000 in (50.8 mm)
10,000 RPM
BCK36-18MM-1/2"-A
18 mm
0.5000 in
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-18MM-5/8"-A
18 mm
0.6250 in
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
MBC15-5-3-A
5 mm
3 mm
27.3 mm
Aluminum
15.0 mm
10,000 RPM
MBC15-5-4-A
5 mm
4 mm
27.3 mm
Aluminum
15.0 mm
10,000 RPM
MBC15-5-5-A
5 mm
5 mm
27.3 mm
Aluminum
15.0 mm
10,000 RPM
MBC19-5-4-A
5 mm
4 mm
33.2 mm
Aluminum
19.1 mm
10,000 RPM
MBC19-5-5-A
5 mm
5 mm
33.2 mm
Aluminum
19.1 mm
10,000 RPM
MBC41-18-10-A
18 mm
10 mm
51.7 mm
Aluminum
41.3 mm
10,000 RPM
MBC41-18-11-A
18 mm
11 mm
51.7 mm
Aluminum
41.3 mm
10,000 RPM
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Bore (B1)
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Bore (B1)
5 mm
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