The store will not work correctly 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
Clamp and Set Screw Oldham Coupling Hubs with Inch Bore
Oldham coupling hubs with inch dimensions. Bore sizes range from 1/8" to 1-1/4".
Products
Download CAD File:
OST16-4-SS
OST16-4-SS
As low as
$32.27
$79.18
Ruland OST16-4-SS, 1/4" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
OST16-5-A
OST16-5-A
As low as
$13.08
$19.18
Ruland OST16-5-A, 5/16" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
OST16-5-SS
OST16-5-SS
As low as
$32.27
$79.18
Ruland OST16-5-SS, 5/16" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
OST16-6-A
OST16-6-A
As low as
$13.08
$19.18
Ruland OST16-6-A, 3/8" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
OST16-6-SS
OST16-6-SS
As low as
$32.27
$79.18
Ruland OST16-6-SS, 3/8" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
OST16-8-A
OST16-8-A
As low as
$13.08
$19.18
Ruland OST16-8-A, 1/2" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
OST16-8-SS
OST16-8-SS
As low as
$32.27
$79.18
Ruland OST16-8-SS, 1/2" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
OST21-10-A
OST21-10-A
As low as
$19.66
$28.83
Ruland OST21-10-A, 5/8" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST21-10-SS
OST21-10-SS
As low as
$48.52
$119.04
Ruland OST21-10-SS, 5/8" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST21-5-A
OST21-5-A
As low as
$19.66
$28.83
Ruland OST21-5-A, 5/16" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST21-5-SS
OST21-5-SS
As low as
$48.52
$119.04
Ruland OST21-5-SS, 5/16" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST21-6-A
OST21-6-A
As low as
$19.66
$28.83
Ruland OST21-6-A, 3/8" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST21-6-SS
OST21-6-SS
As low as
$48.52
$119.04
Ruland OST21-6-SS, 3/8" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST21-8-A
OST21-8-A
As low as
$19.66
$28.83
Ruland OST21-8-A, 1/2" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST21-8-SS
OST21-8-SS
As low as
$48.52
$119.04
Ruland OST21-8-SS, 1/2" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
OST26-10-A
OST26-10-A
As low as
$23.81
$34.93
Ruland OST26-10-A, 5/8" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST26-10-SS
OST26-10-SS
As low as
$58.81
$144.30
Ruland OST26-10-SS, 5/8" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST26-12-A
OST26-12-A
As low as
$23.81
$34.93
Ruland OST26-12-A, 3/4" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST26-12-SS
OST26-12-SS
As low as
$58.81
$144.30
Ruland OST26-12-SS, 3/4" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST26-6-A
OST26-6-A
As low as
$23.81
$34.93
Ruland OST26-6-A, 3/8" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST26-6-SS
OST26-6-SS
As low as
$58.81
$144.30
Ruland OST26-6-SS, 3/8" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST26-8-A
OST26-8-A
As low as
$23.81
$34.93
Ruland OST26-8-A, 1/2" Oldham Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST26-8-SS
OST26-8-SS
As low as
$58.81
$144.30
Ruland OST26-8-SS, 1/2" Oldham Coupling Hub, 303 Stainless Steel, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
OST8-2-A
OST8-2-A
As low as
$9.05
$13.27
Ruland OST8-2-A, 1/8" Oldham Coupling Hub, Aluminum, Set Screw Style, 0.500" OD, 0.222" Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
OST16-4-SS
0.2500 in
1.250 in (31.8 mm)
303 Stainless Steel
1.000 in (25.4 mm)
4,500 RPM
OST16-5-A
0.3125 in
1.250 in (31.8 mm)
Aluminum
1.000 in (25.4 mm)
4,500 RPM
OST16-5-SS
0.3125 in
1.250 in (31.8 mm)
303 Stainless Steel
1.000 in (25.4 mm)
4,500 RPM
OST16-6-A
0.3750 in
1.250 in (31.8 mm)
Aluminum
1.000 in (25.4 mm)
4,500 RPM
OST16-6-SS
0.3750 in
1.250 in (31.8 mm)
303 Stainless Steel
1.000 in (25.4 mm)
4,500 RPM
OST16-8-A
0.5000 in
1.250 in (31.8 mm)
Aluminum
1.000 in (25.4 mm)
4,500 RPM
OST16-8-SS
0.5000 in
1.250 in (31.8 mm)
303 Stainless Steel
1.000 in (25.4 mm)
4,500 RPM
OST21-10-A
0.6250 in
1.875 in (47.6 mm)
Aluminum
1.313 in (33.3 mm)
4,500 RPM
OST21-10-SS
0.6250 in
1.875 in (47.6 mm)
303 Stainless Steel
1.313 in (33.3 mm)
4,500 RPM
OST21-5-A
0.3125 in
1.875 in (47.6 mm)
Aluminum
1.313 in (33.3 mm)
4,500 RPM
OST21-5-SS
0.3125 in
1.875 in (47.6 mm)
303 Stainless Steel
1.313 in (33.3 mm)
4,500 RPM
OST21-6-A
0.3750 in
1.875 in (47.6 mm)
Aluminum
1.313 in (33.3 mm)
4,500 RPM
OST21-6-SS
0.3750 in
1.875 in (47.6 mm)
303 Stainless Steel
1.313 in (33.3 mm)
4,500 RPM
OST21-8-A
0.5000 in
1.875 in (47.6 mm)
Aluminum
1.313 in (33.3 mm)
4,500 RPM
OST21-8-SS
0.5000 in
1.875 in (47.6 mm)
303 Stainless Steel
1.313 in (33.3 mm)
4,500 RPM
OST26-10-A
0.6250 in
2.000 in (50.8 mm)
Aluminum
1.625 in (41.3 mm)
4,500 RPM
OST26-10-SS
0.6250 in
2.000 in (50.8 mm)
303 Stainless Steel
1.625 in (41.3 mm)
4,500 RPM
OST26-12-A
0.7500 in
2.000 in (50.8 mm)
Aluminum
1.625 in (41.3 mm)
4,500 RPM
OST26-12-SS
0.7500 in
2.000 in (50.8 mm)
303 Stainless Steel
1.625 in (41.3 mm)
4,500 RPM
OST26-6-A
0.3750 in
2.000 in (50.8 mm)
Aluminum
1.625 in (41.3 mm)
4,500 RPM
OST26-6-SS
0.3750 in
2.000 in (50.8 mm)
303 Stainless Steel
1.625 in (41.3 mm)
4,500 RPM
OST26-8-A
0.5000 in
2.000 in (50.8 mm)
Aluminum
1.625 in (41.3 mm)
4,500 RPM
OST26-8-SS
0.5000 in
2.000 in (50.8 mm)
303 Stainless Steel
1.625 in (41.3 mm)
4,500 RPM
OST8-2-A
0.1250 in
0.625 in (15.9 mm)
Aluminum
0.500 in (12.7 mm)
4,500 RPM
© 2025 Ruland Manufacturing Co., Inc. All rights reserved
Top