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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:
BC26-1/2\"-10MM-A
BC26-1/2"-10MM-A
As low as
$105.39
$154.57
Ruland BC26-1/2"-10MM-A, 1/2" x 10mm Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-1/2\"-11MM-A
BC26-1/2"-11MM-A
As low as
$105.39
$154.57
Ruland BC26-1/2"-11MM-A, 1/2" x 11mm Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-1/2\"-12MM-A
BC26-1/2"-12MM-A
As low as
$105.39
$154.57
Ruland BC26-1/2"-12MM-A, 1/2" x 12mm Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-10MM-3/8\"-A
BC26-10MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-10MM-3/8"-A, 10mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-11MM-3/8\"-A
BC26-11MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-11MM-3/8"-A, 11mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-12MM-3/8\"-A
BC26-12MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-12MM-3/8"-A, 12mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-13MM-1/2\"-A
BC26-13MM-1/2"-A
As low as
$105.39
$154.57
Ruland BC26-13MM-1/2"-A, 13mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-13MM-3/8\"-A
BC26-13MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-13MM-3/8"-A, 13mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-14MM-1/2\"-A
BC26-14MM-1/2"-A
As low as
$105.39
$154.57
Ruland BC26-14MM-1/2"-A, 14mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-14MM-3/8\"-A
BC26-14MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-14MM-3/8"-A, 14mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-15MM-1/2\"-A
BC26-15MM-1/2"-A
As low as
$105.39
$154.57
Ruland BC26-15MM-1/2"-A, 15mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-15MM-3/8\"-A
BC26-15MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-15MM-3/8"-A, 15mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-16MM-1/2\"-A
BC26-16MM-1/2"-A
As low as
$105.39
$154.57
Ruland BC26-16MM-1/2"-A, 16mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-16MM-3/8\"-A
BC26-16MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-16MM-3/8"-A, 16mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-16MM-5/8\"-A
BC26-16MM-5/8"-A
As low as
$105.39
$154.57
Ruland BC26-16MM-5/8"-A, 16mm x 5/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-17MM-1/2\"-A
BC26-17MM-1/2"-A
As low as
$105.39
$154.57
Ruland BC26-17MM-1/2"-A, 17mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-17MM-3/8\"-A
BC26-17MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-17MM-3/8"-A, 17mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-17MM-5/8\"-A
BC26-17MM-5/8"-A
As low as
$105.39
$154.57
Ruland BC26-17MM-5/8"-A, 17mm x 5/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) 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:
BC26-19MM-1/2\"-A
BC26-19MM-1/2"-A
As low as
$105.39
$154.57
Ruland BC26-19MM-1/2"-A, 19mm x 1/2" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-19MM-3/8\"-A
BC26-19MM-3/8"-A
As low as
$105.39
$154.57
Ruland BC26-19MM-3/8"-A, 19mm x 3/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Download CAD File:
BC26-19MM-5/8\"-A
BC26-19MM-5/8"-A
As low as
$105.39
$154.57
Ruland BC26-19MM-5/8"-A, 19mm x 5/8" Bellows Coupling, High Stiffness, Aluminum, 1.625" (41.3mm), OD 2.035" (51.7mm) Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
BC26-1/2"-10MM-A
0.5000 in
10 mm
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-1/2"-11MM-A
0.5000 in
11 mm
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-1/2"-12MM-A
0.5000 in
12 mm
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-10MM-3/8"-A
10 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-11MM-3/8"-A
11 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-12MM-3/8"-A
12 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-13MM-1/2"-A
13 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-13MM-3/8"-A
13 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-14MM-1/2"-A
14 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-14MM-3/8"-A
14 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-15MM-1/2"-A
15 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-15MM-3/8"-A
15 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-16MM-1/2"-A
16 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-16MM-3/8"-A
16 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-16MM-5/8"-A
16 mm
0.6250 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-17MM-1/2"-A
17 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-17MM-3/8"-A
17 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-17MM-5/8"-A
17 mm
0.6250 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 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
BC26-19MM-1/2"-A
19 mm
0.5000 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-19MM-3/8"-A
19 mm
0.3750 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
BC26-19MM-5/8"-A
19 mm
0.6250 in
2.035 in (51.7 mm)
Aluminum
1.625 in (41.3 mm)
10,000 RPM
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Static Torque
250 lb-in (28.0 Nm)
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