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Flexible Beam Couplings Shaft Collar in Shell
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PSR Flexible Beam Coupling - Aluminum

Aluminum Set Screw Flexible Beam Coupling

Features

  • Extra flexible with low bearing loads
  • Aluminum for low inertia
  • Multiple beam cuts improve parallel misalignment capabilities
  • Zero-backlash
  • Bore tolerance: +.001"/–.000"
  • Maximum speed: 6,000 RPM
  • Temperature range: -40°F to 225°F



 distributor

How to Specify

Choose any Bore 1 and any Bore 2 available in a body size. Part numbers are in the following format with numbers representing sixteenths of an inch:

order bc
 
 
Flexible Beam Coupling
P-Series Aluminum
Four Beam Couplings
P-Series Stainless Steel
Four Beam Couplings
F-Series Aluminum
Six Beam Couplings
F-Series Stainless Steel
Six Beam Couplings
MW-Series
Four Beam Couplings
Coupling Support Form
Product Index
 
   
  3D CAD files coming soon*
Part
Number		 Bore B1
(in)		 Bore B2
(in)		 Outer
Diameter
OD (in)		 Length
L (in)		 Set
Screw		 Shaft
Penetration
(in)		 Static
Torque
(lb-in)		 Torsional
Stiffness
(Deg/lb-in)		 MISALIGNMENT
Moment of Inertia
(lb-in²)		 Angular Parallel (in) Axial Motion (in)
PSR6
1.5 (.0938)
1.5 (.0938)
0.375 0.563 M2 0.235
5.5
1.34
0.0001 3° 0.008 0.005
PSR8
1.5 (.0938)
2 (.1250)
1.5 (.0938)
2 (.1250)
0.500 0.750 M2 0.265
8
8
0.75
0.75
0.0004 3° 0.008 0.005
PSR10
2 (.1250)
2.5 (0.1563)
3 (0.1875)
2 (.1250)
2.5 (0.1563)
3 (0.1875)
0.625 0.800 M3 0.336
15
12
12
0.36
0.54
0.54
0.0011 3° 0.008 0.005
PSR12
2 (.1250)
2.5 (0.1563)
3 (0.1875)
4 (0.2500)
2 (.1250)
2.5 (0.1563)
3 (0.1875)
4 (0.2500)
0.750 0.900 M4 0.386
26
17
17
14
0.18
0.26
0.26
0.33
0.0025 3° 0.008 0.005
PSR14
3 (0.1875)
4 (0.2500)
5 (0.3125)
3 (0.1875)
4 (0.2500)
5 (0.3125)
0.875 1.063 M4 0.450
20
18
16
0.17
0.21
0.27
0.0056 3° 0.008 0.005
PSR16
4 (0.2500)
5 (0.3125)
6 (0.3750)
4 (0.2500)
5 (0.3125)
6 (0.3750)
1.000 1.250 M4 0.545
36
33
30
0.16
0.18
0.20
0.0116 3° 0.015 0.010
PSR18
4 (0.2500)
5 (0.3125)
6 (0.3750)
8 (0.5000)
4 (0.2500)
5 (0.3125)
6 (0.3750)
8 (0.5000)
1.125 1.500 M5 0.670
47
44
40
34
0.10
0.11
0.14
0.22
0.0217 3° 0.015 0.010
PSR20
4 (0.2500)
5 (0.3125)
6 (0.3750)
8 (0.5000)
4 (0.2500)
5 (0.3125)
6 (0.3750)
8 (0.5000)
1.250 1.500 M6 0.670
68
64
60
52
0.06
0.06
0.07
0.12
0.0340 3° 0.015 0.010


Note 1 Static torque ratings are at maximum misalignment. To obtain dynamic rating, static ratings should be divided by 2 for non-reversing applications and by 4 for reversing applications.
Note 2 Hardware is alloy steel with black oxide finish. Parts PSR6, PSR8, PSR10, and PSR12 have one set screw on each end. PSR14, PSR16, PSR18, and PSR20 have two set screws on each end 120° apart.
Note 3 Performance ratings are for guidance only. The user must determine suitability for a particular application.
Note 4 Coupling torque and torsional stiffness are determined by the largest bore selected.
Note 5 Torque ratings for the couplings are based on the physical limitations/failure point of the machined beams. Under normal/typical conditions the hubs are capable of holding up to the rated torque of the machined beams. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the rated torque of the machined beams. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance.

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