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Bellows Couplings for Motors
Bellows couplings are zero-backlash and constructed of two anodized aluminum hubs and a stainless steel bellows that serves as the flexible element. This design results in a low inertia zero-backlash coupling that is a good choice for motors coupled to ball screw driven actuators in precision applications. The thin walls of the bellows allow the coupling to flex under misalignment conditions and remain rigid under torsional loads. Bellows couplings have the highest size-for-size torque and torsional stiffness of all Ruland flexible couplings and are preferred in applications where the highest level of accuracy and responsiveness is required.
Ruland bellows coupling have a balanced design for reduced vibration at speeds up to 10,000 RPM. Bore sizes are available from 1/8” to 1” and 3mm to 25mm and hubs are manufactured in clamp and set screw styles with and without keyways.
Products
Download CAD File:
BC36-1 1/8\"-14MM-A
BC36-1 1/8"-14MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-14MM-A, 1 1/8" x 14mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-15MM-A
BC36-1 1/8"-15MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-15MM-A, 1 1/8" x 15mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-16MM-A
BC36-1 1/8"-16MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-16MM-A, 1 1/8" x 16mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-17MM-A
BC36-1 1/8"-17MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-17MM-A, 1 1/8" x 17mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-18MM-A
BC36-1 1/8"-18MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-18MM-A, 1 1/8" x 18mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-19MM-A
BC36-1 1/8"-19MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-19MM-A, 1 1/8" x 19mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-20MM-A
BC36-1 1/8"-20MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-20MM-A, 1 1/8" x 20mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-22MM-A
BC36-1 1/8"-22MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-22MM-A, 1 1/8" x 22mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-24MM-A
BC36-1 1/8"-24MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-24MM-A, 1 1/8" x 24mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-25MM-A
BC36-1 1/8"-25MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-25MM-A, 1 1/8" x 25mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-1 1/8\"-28MM-A
BC36-1 1/8"-28MM-A
As low as
$172.38
$252.82
Ruland BC36-1 1/8"-28MM-A, 1 1/8" x 28mm Bellows Coupling, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BC36-18-10-A
BC36-18-10-A
As low as
$172.38
$252.82
Ruland BC36-18-10-A, 1 1/8" x 5/8" Bellows Coupling, High Stiffness, Aluminum, 2.250", OD 3.235" Length
Download CAD File:
BC36-18-12-A
BC36-18-12-A
As low as
$172.38
$252.82
Ruland BC36-18-12-A, 1 1/8" x 3/4" Bellows Coupling, High Stiffness, Aluminum, 2.250", OD 3.235" Length
Download CAD File:
BC36-18-14-A
BC36-18-14-A
As low as
$172.38
$252.82
Ruland BC36-18-14-A, 1 1/8" x 7/8" Bellows Coupling, High Stiffness, Aluminum, 2.250", OD 3.235" Length
Download CAD File:
BC36-18-16-A
BC36-18-16-A
As low as
$172.38
$252.82
Ruland BC36-18-16-A, 1 1/8" x 1" Bellows Coupling, High Stiffness, Aluminum, 2.250", OD 3.235" Length
Download CAD File:
BC36-18-18-A
BC36-18-18-A
As low as
$172.38
$252.82
Ruland BC36-18-18-A, 1 1/8" x 1 1/8" Bellows Coupling, High Stiffness, Aluminum, 2.250", OD 3.235" Length
Download CAD File:
BC36-18-8-A
BC36-18-8-A
As low as
$172.38
$252.82
Ruland BC36-18-8-A, 1 1/8" x 1/2" Bellows Coupling, High Stiffness, Aluminum, 2.250", OD 3.235" Length
Download CAD File:
BCK36-1 1/8\"-14MM-A
BCK36-1 1/8"-14MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-14MM-A, 1 1/8" x 14mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-15MM-A
BCK36-1 1/8"-15MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-15MM-A, 1 1/8" x 15mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-16MM-A
BCK36-1 1/8"-16MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-16MM-A, 1 1/8" x 16mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-17MM-A
BCK36-1 1/8"-17MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-17MM-A, 1 1/8" x 17mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-18MM-A
BCK36-1 1/8"-18MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-18MM-A, 1 1/8" x 18mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-19MM-A
BCK36-1 1/8"-19MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-19MM-A, 1 1/8" x 19mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-20MM-A
BCK36-1 1/8"-20MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-20MM-A, 1 1/8" x 20mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
BC36-1 1/8"-14MM-A
1.1250 in
14 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-15MM-A
1.1250 in
15 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-16MM-A
1.1250 in
16 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-17MM-A
1.1250 in
17 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-18MM-A
1.1250 in
18 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-19MM-A
1.1250 in
19 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-20MM-A
1.1250 in
20 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-22MM-A
1.1250 in
22 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-24MM-A
1.1250 in
24 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-25MM-A
1.1250 in
25 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-1 1/8"-28MM-A
1.1250 in
28 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BC36-18-10-A
1.1250 in
0.6250 in
3.235 in
Aluminum
2.250 in
10,000 RPM
BC36-18-12-A
1.1250 in
0.7500 in
3.235 in
Aluminum
2.250 in
10,000 RPM
BC36-18-14-A
1.1250 in
0.8750 in
3.235 in
Aluminum
2.250 in
10,000 RPM
BC36-18-16-A
1.1250 in
1.0000 in
3.235 in
Aluminum
2.250 in
10,000 RPM
BC36-18-18-A
1.1250 in
1.1250 in
3.235 in
Aluminum
2.250 in
10,000 RPM
BC36-18-8-A
1.1250 in
0.5000 in
3.235 in
Aluminum
2.250 in
10,000 RPM
BCK36-1 1/8"-14MM-A
1.1250 in
14 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/8"-15MM-A
1.1250 in
15 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/8"-16MM-A
1.1250 in
16 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/8"-17MM-A
1.1250 in
17 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/8"-18MM-A
1.1250 in
18 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/8"-19MM-A
1.1250 in
19 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/8"-20MM-A
1.1250 in
20 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
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Bore (B1)
1.1250 in
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