The store will not work correctly in the case when cookies are disabled.
JavaScript seems to be disabled in your browser.
For the best experience on our site, be sure to turn on Javascript in your browser.
Due to Microsoft's discontinuation of updates, including security, certain functionality such as checkout and CAD may not work for you. We recommend using Google Chrome, Microsoft Edge, Firefox, or Safari to ensure full functionality.Thank you - the Ruland team
Bellows Couplings for Test, Measurement, and Inspection Applications
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 test, measurement, or inspection systems often choose 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 bellows couplings are manufactured with a low inertia and zero-backlash making them a good choice for high torque applications that cannot support a rigid coupling due to weight or misalignment requirements. They have a balanced design for reduced vibration at speeds up to 10,000 RPM. Bellows couplings 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. They are manufactured in our Marlborough, MA factory under strict controls using proprietary processes.
Products
Download CAD File:
BCK36-1 1/4\"-14MM-A
BCK36-1 1/4"-14MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-14MM-A, 1 1/4" x 14mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-15MM-A
BCK36-1 1/4"-15MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-15MM-A, 1 1/4" x 15mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-16MM-A
BCK36-1 1/4"-16MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-16MM-A, 1 1/4" x 16mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-17MM-A
BCK36-1 1/4"-17MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-17MM-A, 1 1/4" x 17mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-18MM-A
BCK36-1 1/4"-18MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-18MM-A, 1 1/4" x 18mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-19MM-A
BCK36-1 1/4"-19MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-19MM-A, 1 1/4" x 19mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-20MM-A
BCK36-1 1/4"-20MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-20MM-A, 1 1/4" x 20mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-22MM-A
BCK36-1 1/4"-22MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-22MM-A, 1 1/4" x 22mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-24MM-A
BCK36-1 1/4"-24MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-24MM-A, 1 1/4" x 24mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-25MM-A
BCK36-1 1/4"-25MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-25MM-A, 1 1/4" x 25mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-28MM-A
BCK36-1 1/4"-28MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-28MM-A, 1 1/4" x 28mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/4\"-30MM-A
BCK36-1 1/4"-30MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/4"-30MM-A, 1 1/4" x 30mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) 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
Download CAD File:
BCK36-1 1/8\"-22MM-A
BCK36-1 1/8"-22MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-22MM-A, 1 1/8" x 22mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-24MM-A
BCK36-1 1/8"-24MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-24MM-A, 1 1/8" x 24mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-25MM-A
BCK36-1 1/8"-25MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-25MM-A, 1 1/8" x 25mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1 1/8\"-28MM-A
BCK36-1 1/8"-28MM-A
As low as
$199.99
$293.32
Ruland BCK36-1 1/8"-28MM-A, 1 1/8" x 28mm Bellows Coupling with Keyways, High Stiffness, Aluminum, 2.250" (57.2mm), OD 3.235" (82.2mm) Length
Download CAD File:
BCK36-1\"-14MM-A
BCK36-1"-14MM-A
As low as
$199.99
$293.32
Ruland BCK36-1"-14MM-A, 1" x 14mm 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
BCK36-1 1/4"-14MM-A
1.2500 in
14 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-15MM-A
1.2500 in
15 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-16MM-A
1.2500 in
16 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-17MM-A
1.2500 in
17 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-18MM-A
1.2500 in
18 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-19MM-A
1.2500 in
19 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-20MM-A
1.2500 in
20 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-22MM-A
1.2500 in
22 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-24MM-A
1.2500 in
24 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-25MM-A
1.2500 in
25 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-28MM-A
1.2500 in
28 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
BCK36-1 1/4"-30MM-A
1.2500 in
30 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
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
BCK36-1 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
BCK36-1 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
BCK36-1 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
BCK36-1 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
BCK36-1"-14MM-A
1.0000 in
14 mm
3.235 in (82.2 mm)
Aluminum
2.250 in (57.2 mm)
10,000 RPM
Filter
Now Shopping by
Keyway
Yes
Outer Diameter (OD)
2.250 in (57.2 mm)
Shopping Options
© 2024 Ruland Manufacturing Co., Inc. All rights reserved
Top