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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:
BC12-4-4-A
BC12-4-4-A
As low as
$79.05
$115.94
Ruland BC12-4-4-A, 1/4" x 1/4" Bellows Coupling, Aluminum, Clamp Style, 0.750" OD, 1.303" Length
Download CAD File:
BC12-5-3-A
BC12-5-3-A
As low as
$79.05
$115.94
Ruland BC12-5-3-A, 5/16" x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" OD, 1.303" Length
Download CAD File:
BC12-5-4-A
BC12-5-4-A
As low as
$79.05
$115.94
Ruland BC12-5-4-A, 5/16" x 1/4" Bellows Coupling, Aluminum, Clamp Style, 0.750" OD, 1.303" Length
Download CAD File:
BC12-5-5-A
BC12-5-5-A
As low as
$79.05
$115.94
Ruland BC12-5-5-A, 5/16" x 5/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" OD, 1.303" Length
Download CAD File:
BC12-5/16\"-4MM-A
BC12-5/16"-4MM-A
As low as
$79.05
$115.94
Ruland BC12-5/16"-4MM-A, 5/16" x 4mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-5/16\"-5MM-A
BC12-5/16"-5MM-A
As low as
$79.05
$115.94
Ruland BC12-5/16"-5MM-A, 5/16" x 5mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-5/16\"-6MM-A
BC12-5/16"-6MM-A
As low as
$79.05
$115.94
Ruland BC12-5/16"-6MM-A, 5/16" x 6mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-5/16\"-7MM-A
BC12-5/16"-7MM-A
As low as
$79.05
$115.94
Ruland BC12-5/16"-7MM-A, 5/16" x 7mm Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) 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:
BC12-6MM-3/16\"-A
BC12-6MM-3/16"-A
As low as
$79.05
$115.94
Ruland BC12-6MM-3/16"-A, 6mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-7MM-1/4\"-A
BC12-7MM-1/4"-A
As low as
$79.05
$115.94
Ruland BC12-7MM-1/4"-A, 7mm x 1/4" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-7MM-3/16\"-A
BC12-7MM-3/16"-A
As low as
$79.05
$115.94
Ruland BC12-7MM-3/16"-A, 7mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-8MM-1/4\"-A
BC12-8MM-1/4"-A
As low as
$79.05
$115.94
Ruland BC12-8MM-1/4"-A, 8mm x 1/4" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-8MM-3/16\"-A
BC12-8MM-3/16"-A
As low as
$79.05
$115.94
Ruland BC12-8MM-3/16"-A, 8mm x 3/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC12-8MM-5/16\"-A
BC12-8MM-5/16"-A
As low as
$79.05
$115.94
Ruland BC12-8MM-5/16"-A, 8mm x 5/16" Bellows Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 1.303" (33.1mm) Length
Download CAD File:
BC16-1/2\"-10MM-A
BC16-1/2"-10MM-A
As low as
$87.82
$128.81
Ruland BC16-1/2"-10MM-A, 1/2" x 10mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-1/2\"-11MM-A
BC16-1/2"-11MM-A
As low as
$87.82
$128.81
Ruland BC16-1/2"-11MM-A, 1/2" x 11mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-1/2\"-12MM-A
BC16-1/2"-12MM-A
As low as
$87.82
$128.81
Ruland BC16-1/2"-12MM-A, 1/2" x 12mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-1/2\"-6MM-A
BC16-1/2"-6MM-A
As low as
$87.82
$128.81
Ruland BC16-1/2"-6MM-A, 1/2" x 6mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-1/2\"-7MM-A
BC16-1/2"-7MM-A
As low as
$87.82
$128.81
Ruland BC16-1/2"-7MM-A, 1/2" x 7mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-1/2\"-8MM-A
BC16-1/2"-8MM-A
As low as
$87.82
$128.81
Ruland BC16-1/2"-8MM-A, 1/2" x 8mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-1/2\"-9MM-A
BC16-1/2"-9MM-A
As low as
$87.82
$128.81
Ruland BC16-1/2"-9MM-A, 1/2" x 9mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-1/4\"-6MM-A
BC16-1/4"-6MM-A
As low as
$87.82
$128.81
Ruland BC16-1/4"-6MM-A, 1/4" x 6mm Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Download CAD File:
BC16-10MM-1/4\"-A
BC16-10MM-1/4"-A
As low as
$87.82
$128.81
Ruland BC16-10MM-1/4"-A, 10mm x 1/4" Bellows Coupling, High Stiffness, Aluminum, 1.000" (25.4mm), OD 1.345" (34.2mm) Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
BC12-4-4-A
0.2500 in
0.2500 in
1.306 in
Aluminum
0.750 in
10,000 RPM
BC12-5-3-A
0.3125 in
0.1875 in
1.306 in
Aluminum
0.750 in
10,000 RPM
BC12-5-4-A
0.3125 in
0.2500 in
1.306 in
Aluminum
0.750 in
10,000 RPM
BC12-5-5-A
0.3125 in
0.3125 in
1.306 in
Aluminum
0.750 in
10,000 RPM
BC12-5/16"-4MM-A
0.3125 in
4 mm
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-5/16"-5MM-A
0.3125 in
5 mm
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-5/16"-6MM-A
0.3125 in
6 mm
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-5/16"-7MM-A
0.3125 in
7 mm
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 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
BC12-6MM-3/16"-A
6 mm
0.1875 in
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-7MM-1/4"-A
7 mm
0.2500 in
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-7MM-3/16"-A
7 mm
0.1875 in
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-8MM-1/4"-A
8 mm
0.2500 in
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-8MM-3/16"-A
8 mm
0.1875 in
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC12-8MM-5/16"-A
8 mm
0.3125 in
1.306 in (33.2 mm)
Aluminum
0.750 in (19.1 mm)
10,000 RPM
BC16-1/2"-10MM-A
0.5000 in
10 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-1/2"-11MM-A
0.5000 in
11 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-1/2"-12MM-A
0.5000 in
12 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-1/2"-6MM-A
0.5000 in
6 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-1/2"-7MM-A
0.5000 in
7 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-1/2"-8MM-A
0.5000 in
8 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-1/2"-9MM-A
0.5000 in
9 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-1/4"-6MM-A
0.2500 in
6 mm
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
BC16-10MM-1/4"-A
10 mm
0.2500 in
1.345 in (34.2 mm)
Aluminum
1.000 in (25.4 mm)
10,000 RPM
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