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Bellows Coupling: Inch to Metric
Bellows couplings with inch to metric bore combinations are available with clamp style hubs with or without keyways in bore dimensions ranging from 1/8" (3mm) to 1-3/4" (45mm). Stainless steel hubs and other custom features are available by special order.
Features High torque with low inertia
Balanced design for high RPM
Long Life with no maintenance
High torsional stiffness
Constant velocity
Zero backlash
RoHS3 and REACH Compliant
Maximum speed: 10,000 RPM
Bore tolerance:
+.001 in / -.000 in
+.03mm/–.000mm
Temperature Range: -40°F to 200°F
Material
Aluminum hubs are standard
Stainless steel hubs available upon request
How to Specify Part numbers are in the following format with numbers representing sixteenths of an inch or millimeters:
Products
Download CAD File:
BC50-1 1/2\"-25MM-A
BC50-1 1/2"-25MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/2"-25MM-A, 1 1/2" x 25mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/2\"-28MM-A
BC50-1 1/2"-28MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/2"-28MM-A, 1 1/2" x 28mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/2\"-30MM-A
BC50-1 1/2"-30MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/2"-30MM-A, 1 1/2" x 30mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/2\"-32MM-A
BC50-1 1/2"-32MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/2"-32MM-A, 1 1/2" x 32mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/2\"-35MM-A
BC50-1 1/2"-35MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/2"-35MM-A, 1 1/2" x 35mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/2\"-38MM-A
BC50-1 1/2"-38MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/2"-38MM-A, 1 1/2" x 38mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/4\"-25MM-A
BC50-1 1/4"-25MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/4"-25MM-A, 1 1/4" x 25mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/4\"-28MM-A
BC50-1 1/4"-28MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/4"-28MM-A, 1 1/4" x 28mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/4\"-30MM-A
BC50-1 1/4"-30MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/4"-30MM-A, 1 1/4" x 30mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/8\"-25MM-A
BC50-1 1/8"-25MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/8"-25MM-A, 1 1/8" x 25mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 1/8\"-28MM-A
BC50-1 1/8"-28MM-A
As low as
$221.33
$324.62
Ruland BC50-1 1/8"-28MM-A, 1 1/8" x 28mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-25MM-A
BC50-1 3/4"-25MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-25MM-A, 1 3/4" x 25mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-28MM-A
BC50-1 3/4"-28MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-28MM-A, 1 3/4" x 28mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-30MM-A
BC50-1 3/4"-30MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-30MM-A, 1 3/4" x 30mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-32MM-A
BC50-1 3/4"-32MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-32MM-A, 1 3/4" x 32mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-35MM-A
BC50-1 3/4"-35MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-35MM-A, 1 3/4" x 35mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-38MM-A
BC50-1 3/4"-38MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-38MM-A, 1 3/4" x 38mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-40MM-A
BC50-1 3/4"-40MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-40MM-A, 1 3/4" x 40mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/4\"-42MM-A
BC50-1 3/4"-42MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/4"-42MM-A, 1 3/4" x 42mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/8\"-25MM-A
BC50-1 3/8"-25MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/8"-25MM-A, 1 3/8" x 25mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/8\"-28MM-A
BC50-1 3/8"-28MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/8"-28MM-A, 1 3/8" x 28mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/8\"-30MM-A
BC50-1 3/8"-30MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/8"-30MM-A, 1 3/8" x 30mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 3/8\"-32MM-A
BC50-1 3/8"-32MM-A
As low as
$221.33
$324.62
Ruland BC50-1 3/8"-32MM-A, 1 3/8" x 32mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Download CAD File:
BC50-1 5/8\"-25MM-A
BC50-1 5/8"-25MM-A
As low as
$221.33
$324.62
Ruland BC50-1 5/8"-25MM-A, 1 5/8" x 25mm Bellows Coupling, High Stiffness, Aluminum, 3.125" (79.4 mm), OD 3.816" (96.9 mm) Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
BC50-1 1/2"-25MM-A
1.5000 in
25 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/2"-28MM-A
1.5000 in
28 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/2"-30MM-A
1.5000 in
30 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/2"-32MM-A
1.5000 in
32 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/2"-35MM-A
1.5000 in
35 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/2"-38MM-A
1.5000 in
38 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/4"-25MM-A
1.2500 in
25 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/4"-28MM-A
1.2500 in
28 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/4"-30MM-A
1.2500 in
30 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/8"-25MM-A
1.1250 in
25 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 1/8"-28MM-A
1.1250 in
28 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-25MM-A
1.7500 in
25 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-28MM-A
1.7500 in
28 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-30MM-A
1.7500 in
30 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-32MM-A
1.7500 in
32 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-35MM-A
1.7500 in
35 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-38MM-A
1.7500 in
38 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-40MM-A
1.7500 in
40 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/4"-42MM-A
1.7500 in
42 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/8"-25MM-A
1.3750 in
25 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/8"-28MM-A
1.3750 in
28 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/8"-30MM-A
1.3750 in
30 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 3/8"-32MM-A
1.3750 in
32 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
BC50-1 5/8"-25MM-A
1.6250 in
25 mm
3.808 in (96.7 mm)
Aluminum
3.125 in (79.4 mm)
10,000 RPM
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3.808 in (96.7 mm)
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