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P-Series Four Beam Couplings
P-series beam couplings are designed specifically for precision applications, such as encoders and tachometers that use delicate components. The small bearings on these components make low radial forces essential to longevity and continued high performance. They provide extra flexibility to yield reduced bearing loads. These flexible couplings are shorter than the F-series six beam couplings and conform to industry standard lengths, fitting into confined spaces and allowing for easy retrofits in existing equipment. At the same time, the helical cut pattern continues to provide excellent torque capabilities and low wind-up. P-series beam couplings are manufactured from a single piece of 7075 aluminum for lightweight and low inertia or 303 stainless steel for increased torque capabilities.
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
How to Specify Part numbers are in the following format with numbers
Products
Download CAD File:
PCR10-1/8\"-3MM-A
PCR10-1/8"-3MM-A
As low as
$32.53
$47.70
Ruland PCR10-1/8"-3MM-A, 1/8" x 3mm Four Beam Coupling, Aluminum, Clamp Style, 0.625" (15.9mm) OD, 0.800" (20.3mm) Length
Download CAD File:
PCR10-1/8-3MM-SS
PCR10-1/8-3MM-SS
As low as
$89.78
$131.68
Ruland PCR10-1/8"-3MM-SS, 1/8" x 3mm Four Beam Coupling, Stainless Steel, Clamp Style, 0.625" (15.9mm) OD, 0.800" (20.3mm) Length
Download CAD File:
PCR10-2-2-A
PCR10-2-2-A
As low as
$32.53
$47.70
Ruland PCR10-2-2-A, 1/8" x 1/8" Four Beam Coupling, Aluminum, Clamp Style, 0.625" OD, 0.800" Length
Download CAD File:
PCR10-2-2-SS
PCR10-2-2-SS
As low as
$89.78
$131.68
Ruland PCR10-2-2-SS, 1/8" x 1/8" Four Beam Coupling, Stainless Steel, Clamp Style, 0.625" OD, 0.800" Length
Download CAD File:
PCR12-1/8\"-3MM-A
PCR12-1/8"-3MM-A
As low as
$33.27
$48.79
Ruland PCR12-1/8"-3MM-A, 1/8" x 3mm Four Beam Coupling, Aluminum, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
Download CAD File:
PCR12-1/8\"-3MM-SS
PCR12-1/8"-3MM-SS
As low as
$83.24
$122.08
Ruland PCR12-1/8"-3MM-SS, 1/8" x 3mm Four Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
Download CAD File:
PCR12-2-2-A
PCR12-2-2-A
As low as
$33.27
$48.79
Ruland PCR12-2-2-A, 1/8" x 1/8" Four Beam Coupling, Aluminum, Clamp Style, 0.750" OD, 0.900" Length
Download CAD File:
PCR12-2-2-SS
PCR12-2-2-SS
As low as
$83.24
$122.08
Ruland PCR12-2-2-SS, 1/8" x 1/8" Four Beam Coupling, Stainless Steel, Clamp Style, 0.750" OD, 0.900" Length
Download CAD File:
PCR8-1/8\"-3MM-A
PCR8-1/8"-3MM-A
As low as
$33.78
$49.54
Ruland PCR8-1/8"-3MM-A, 1/8" x 3mm Four Beam Coupling, Aluminum, Clamp Style, 0.500" (12.7mm) OD, 0.750" (19.1mm) Length
Download CAD File:
PCR8-1/8\"-3MM-SS
PCR8-1/8"-3MM-SS
As low as
$88.31
$129.52
Ruland PCR8-1/8"-3MM-SS, 1/8" x 3mm Four Beam Coupling, Stainless Steel, Clamp Style, 0.500" (12.7mm) OD, 0.750" (19.1mm) Length
Download CAD File:
PCR8-2-1.5-A
PCR8-2-1.5-A
As low as
$33.78
$49.54
Ruland PCR8-2-1.5-A, 1/8" x 3/32" Four Beam Coupling, Aluminum, Clamp Style, 0.500" OD, 0.750" Length
Download CAD File:
PCR8-2-1.5-SS
PCR8-2-1.5-SS
As low as
$88.31
$129.52
Ruland PCR8-2-1.5-SS, 1/8" x 3/32" Four Beam Coupling, Stainless Steel, Clamp Style, 0.500" OD, 0.750" Length
Download CAD File:
PCR8-2-2-A
PCR8-2-2-A
As low as
$33.78
$49.54
Ruland PCR8-2-2-A, 1/8" x 1/8" Four Beam Coupling, Aluminum, Clamp Style, 0.500" OD, 0.750" Length
Download CAD File:
PCR8-2-2-SS
PCR8-2-2-SS
As low as
$88.31
$129.52
Ruland PCR8-2-2-SS, 1/8" x 1/8" Four Beam Coupling, Stainless Steel, Clamp Style, 0.500" OD, 0.750" Length
Download CAD File:
PSR10-1/8\"-3MM-A
PSR10-1/8"-3MM-A
As low as
$27.28
$40.01
Ruland PSR10-1/8"-3MM-A, 1/8" x 3mm Four Beam Coupling, Aluminum, Set Screw Style, 0.625" (15.9mm) OD, 0.800" (20.3mm) Length
Download CAD File:
PSR10-1/8\"-3MM-SS
PSR10-1/8"-3MM-SS
As low as
$80.07
$117.44
Ruland PSR10-1/8"-3MM-SS, 1/8" x 3mm Four Beam Coupling, Stainless Steel, Set Screw Style, 0.625" (15.9mm) OD, 0.800" (20.3mm) Length
Download CAD File:
PSR10-2-2-A
PSR10-2-2-A
As low as
$27.28
$40.01
Ruland PSR10-2-2-A, 1/8" x 1/8" Four Beam Coupling, Aluminum, Set Screw Style, 0.625" OD, 0.800" Length
Download CAD File:
PSR10-2-2-SS
PSR10-2-2-SS
As low as
$80.07
$117.44
Ruland PSR10-2-2-SS, 1/8" x 1/8" Four Beam Coupling, Stainless Steel, Set Screw Style, 0.625" OD, 0.800" Length
Download CAD File:
PSR12-1/8\"-3MM-A
PSR12-1/8"-3MM-A
As low as
$28.58
$41.91
Ruland PSR12-1/8"-3MM-A, 1/8" x 3mm Four Beam Coupling, Aluminum, Set Screw Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
Download CAD File:
PSR12-1/8\"-3MM-SS
PSR12-1/8"-3MM-SS
As low as
$72.98
$107.04
Ruland PSR12-1/8"-3MM-SS, 1/8" x 3mm Four Beam Coupling, Stainless Steel, Set Screw Style, 0.750" (19.1mm) OD, 0.900" (22.9mm) Length
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:
PSR8-1/8\"-3MM-A
PSR8-1/8"-3MM-A
As low as
$28.30
$41.51
Ruland PSR8-1/8"-3MM-A, 1/8" x 3mm Four Beam Coupling, Aluminum, Set Screw Style, 0.500" (12.7mm) OD, 0.750" (19.1mm) Length
Download CAD File:
PSR8-1/8\"-3MM-SS
PSR8-1/8"-3MM-SS
As low as
$80.84
$118.56
Ruland PSR8-1/8"-3MM-SS, 1/8" x 3mm Four Beam Coupling, Stainless Steel, Set Screw Style, 0.500" (12.7mm) OD, 0.750" (19.1mm) Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
PCR10-1/8"-3MM-A
0.1250 in
3 mm
0.800 in (20.3 mm)
Aluminum
0.625 in (15.9 mm)
6,000 RPM
PCR10-1/8-3MM-SS
0.1250 in
3 mm
0.800 in (20.3 mm)
303 Stainless Steel
0.625 in (15.9 mm)
6,000 RPM
PCR10-2-2-A
0.1250 in
0.1250 in
0.800 in
Aluminum
0.625 in
6,000 RPM
PCR10-2-2-SS
0.1250 in
0.1250 in
0.800 in
303 Stainless Steel
0.625 in
6,000 RPM
PCR12-1/8"-3MM-A
0.1250 in
3 mm
0.900 in (22.9 mm)
Aluminum
0.750 in (19.1 mm)
6,000 RPM
PCR12-1/8"-3MM-SS
0.1250 in
3 mm
0.900 in (22.9 mm)
303 Stainless Steel
0.750 in (19.1 mm)
6,000 RPM
PCR12-2-2-A
0.1250 in
0.1250 in
0.900 in
Aluminum
0.750 in
6,000 RPM
PCR12-2-2-SS
0.1250 in
0.1250 in
0.900 in
303 Stainless Steel
0.750 in
6,000 RPM
PCR8-1/8"-3MM-A
0.1250 in
3 mm
0.750 in (19.1 mm)
Aluminum
0.500 in (12.7 mm)
6,000 RPM
PCR8-1/8"-3MM-SS
0.1250 in
3 mm
0.750 in (19.1 mm)
303 Stainless Steel
0.500 in (12.7 mm)
6,000 RPM
PCR8-2-1.5-A
0.1250 in
0.0938 in
0.750 in
Aluminum
0.500 in
6,000 RPM
PCR8-2-1.5-SS
0.1250 in
0.0938 in
0.750 in
303 Stainless Steel
0.500 in
6,000 RPM
PCR8-2-2-A
0.1250 in
0.1250 in
0.750 in
Aluminum
0.500 in
6,000 RPM
PCR8-2-2-SS
0.1250 in
0.1250 in
0.750 in
303 Stainless Steel
0.500 in
6,000 RPM
PSR10-1/8"-3MM-A
0.1250 in
3 mm
0.800 in (20.3 mm)
Aluminum
0.625 in (15.9 mm)
6,000 RPM
PSR10-1/8"-3MM-SS
0.1250 in
3 mm
0.800 in (20.3 mm)
303 Stainless Steel
0.625 in (15.9 mm)
6,000 RPM
PSR10-2-2-A
0.1250 in
0.1250 in
0.800 in
Aluminum
0.625 in
6,000 RPM
PSR10-2-2-SS
0.1250 in
0.1250 in
0.800 in
303 Stainless Steel
0.625 in
6,000 RPM
PSR12-1/8"-3MM-A
0.1250 in
3 mm
0.900 in (22.9 mm)
Aluminum
0.750 in (19.1 mm)
6,000 RPM
PSR12-1/8"-3MM-SS
0.1250 in
3 mm
0.900 in (22.9 mm)
303 Stainless Steel
0.750 in (19.1 mm)
6,000 RPM
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
PSR8-1/8"-3MM-A
0.1250 in
3 mm
0.750 in (19.1 mm)
Aluminum
0.500 in (12.7 mm)
6,000 RPM
PSR8-1/8"-3MM-SS
0.1250 in
3 mm
0.750 in (19.1 mm)
303 Stainless Steel
0.500 in (12.7 mm)
6,000 RPM
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Bore (B1)
0.1250 in
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