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Beam Couplings: Four-Beam P-Series, Set Screw, Inch
Set screw style P-Series four beam couplings (also referred to as helical couplings) with inch dimensions. Bore sizes range from 0.94" to 1/2".
Features Aluminum
Extra flexible with low bearing loads
Lightweight for low inertia
Temperature range: -40°F to 225°F
Stainless Steel
Flexible with low bearing loads
Corrosion resistant
Temperature range: -40°F to 350°F
Multiple beam cuts improve parallel misalignment capabilities
Zero backlash
Constant velocity
RoHS3 and REACH Compliant
Maximum speed: 6,000 RPM
Bore tolerance: +.025mm/–.000mm
How to Specify Part numbers are in the following format with numbers representing sixteenths of an inch:
Products
Download CAD File:
PSR12-2-2-A
PSR12-2-2-A
As low as
$28.58
$41.91
Ruland PSR12-2-2-A, 1/8" x 1/8" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-2-2-SS
PSR12-2-2-SS
As low as
$72.98
$107.04
Ruland PSR12-2-2-SS, 1/8" x 1/8" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-2.5-2-A
PSR12-2.5-2-A
As low as
$28.58
$41.91
Ruland PSR12-2.5-2-A, 5/32" x 1/8" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-2.5-2-SS
PSR12-2.5-2-SS
As low as
$72.98
$107.04
Ruland PSR12-2.5-2-SS, 5/32" x 1/8" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-2.5-2.5-A
PSR12-2.5-2.5-A
As low as
$28.58
$41.91
Ruland PSR12-2.5-2.5-A, 5/32" x 5/32" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-2.5-2.5-SS
PSR12-2.5-2.5-SS
As low as
$72.98
$107.04
Ruland PSR12-2.5-2.5-SS, 5/32" x 5/32" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-3-2-A
PSR12-3-2-A
As low as
$28.58
$41.91
Ruland PSR12-3-2-A, 3/16" x 1/8" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-3-2-SS
PSR12-3-2-SS
As low as
$72.98
$107.04
Ruland PSR12-3-2-SS, 3/16" x 1/8" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-3-2.5-A
PSR12-3-2.5-A
As low as
$28.58
$41.91
Ruland PSR12-3-2.5-A, 3/16" x 5/32" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-3-2.5-SS
PSR12-3-2.5-SS
As low as
$72.98
$107.04
Ruland PSR12-3-2.5-SS, 3/16" x 5/32" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-3-3-A
PSR12-3-3-A
As low as
$28.58
$41.91
Ruland PSR12-3-3-A, 3/16" x 3/16" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-3-3-SS
PSR12-3-3-SS
As low as
$72.98
$107.04
Ruland PSR12-3-3-SS, 3/16" x 3/16" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-2-A
PSR12-4-2-A
As low as
$28.58
$41.91
Ruland PSR12-4-2-A, 1/4" x 1/8" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-2-SS
PSR12-4-2-SS
As low as
$72.98
$107.04
Ruland PSR12-4-2-SS, 1/4" x 1/8" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-2.5-A
PSR12-4-2.5-A
As low as
$28.58
$41.91
Ruland PSR12-4-2.5-A, 1/4" x 5/32" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-2.5-SS
PSR12-4-2.5-SS
As low as
$72.98
$107.04
Ruland PSR12-4-2.5-SS, 1/4" x 5/32" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-3-A
PSR12-4-3-A
As low as
$28.58
$41.91
Ruland PSR12-4-3-A, 1/4" x 3/16" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-3-SS
PSR12-4-3-SS
As low as
$72.98
$107.04
Ruland PSR12-4-3-SS, 1/4" x 3/16" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-4-A
PSR12-4-4-A
As low as
$28.58
$41.91
Ruland PSR12-4-4-A, 1/4" x 1/4" Four Beam Coupling, Aluminum, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR12-4-4-SS
PSR12-4-4-SS
As low as
$72.98
$107.04
Ruland PSR12-4-4-SS, 1/4" x 1/4" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" OD, 0.900" Length
Download CAD File:
PSR18-4-4-A
PSR18-4-4-A
As low as
$41.35
$60.64
Ruland PSR18-4-4-A, 1/4" x 1/4" Four Beam Coupling, Aluminum, Set Screw Style, 1.125" OD, 1.500" Length
Download CAD File:
PSR18-4-4-SS
PSR18-4-4-SS
As low as
$110.57
$162.16
Ruland PSR18-4-4-SS, 1/4" x 1/4" Four Beam Coupling, Stainless Steel, Set Screw Style, 1.125" OD, 1.500" Length
Download CAD File:
PSR18-5-4-A
PSR18-5-4-A
As low as
$41.35
$60.64
Ruland PSR18-5-4-A, 5/16" x 1/4" Four Beam Coupling, Aluminum, Set Screw Style, 1.125" OD, 1.500" Length
Download CAD File:
PSR18-5-4-SS
PSR18-5-4-SS
As low as
$110.57
$162.16
Ruland PSR18-5-4-SS, 5/16" x 1/4" Four Beam Coupling, Stainless Steel, Set Screw Style, 1.125" OD, 1.500" Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
PSR12-2-2-A
0.1250 in
0.1250 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-2-2-SS
0.1250 in
0.1250 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-2.5-2-A
0.1563 in
0.1250 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-2.5-2-SS
0.1563 in
0.1250 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-2.5-2.5-A
0.1563 in
0.1563 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-2.5-2.5-SS
0.1563 in
0.1563 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-3-2-A
0.1875 in
0.1250 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-3-2-SS
0.1875 in
0.1250 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-3-2.5-A
0.1875 in
0.1563 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-3-2.5-SS
0.1875 in
0.1563 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-3-3-A
0.1875 in
0.1875 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-3-3-SS
0.1875 in
0.1875 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-4-2-A
0.2500 in
0.1250 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-4-2-SS
0.2500 in
0.1250 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-4-2.5-A
0.2500 in
0.1563 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-4-2.5-SS
0.2500 in
0.1563 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-4-3-A
0.2500 in
0.1875 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-4-3-SS
0.2500 in
0.1875 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR12-4-4-A
0.2500 in
0.2500 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PSR12-4-4-SS
0.2500 in
0.2500 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PSR18-4-4-A
0.2500 in
0.2500 in
1.500 in
Aluminum
1.125 in
6,000 RPM
PSR18-4-4-SS
0.2500 in
0.2500 in
1.500 in
303 Stainless Steel
1.125 in
6,000 RPM
PSR18-5-4-A
0.3125 in
0.2500 in
1.500 in
Aluminum
1.125 in
6,000 RPM
PSR18-5-4-SS
0.3125 in
0.2500 in
1.500 in
303 Stainless Steel
1.125 in
6,000 RPM
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Outer Diameter (OD)
0.750 in
Outer Diameter (OD)
1.125 in
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