Customer Service: 1 (508) 485-1000
Ruland Manufacturing Ruland Manufacturing Logo
Flexible Beam Couplings Shaft Collar in Shell
grey block
 

PCR Flexible Beam Coupling - Aluminum


Aluminum Clamp 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
 
   

  Click part number for 3D CAD file
Part
Number
Bore
B1 (in)
Bore
B2 (in)
Outer
Diam.
OD (in)
Length
L (in)
Cap
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)
PCR6
1.5 (.0938)
1.5 (.0938)
0.375 0.563 M1.6 0.235
5.5
1.34
0.0001 0.008 0.005
PCR8
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 0.008 0.005
PCR10
2 (.1250)
2.5 (0.1563)
3 (0.1875)
2 (.1250)
2.5 (0.1563)
3 (0.1875)
0.625 0.800 M2 0.336
15
12
12
0.36
0.54
0.54
0.0011 0.008 0.005
PCR12
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 M2.5 0.386
26
17
17
14
0.18
0.26
0.26
0.33
0.0025 0.008 0.005
PCR14 0.875 1.063 M3 0.450
20
18
16
0.17
0.21
0.27
0.0056 0.008 0.005
PCR16 1.000 1.250 M4 0.545
36
33
30
0.16
0.18
0.20
0.0116 0.015 0.010
PCR18 1.125 1.500 M4 0.670
47
44
40
34
0.10
0.11
0.14
0.22
0.0217 0.015 0.010
PCR20
4 (0.2500)
5 (0.3125)
6 (0.3750)
8 (0.5000)
1.250 1.500 M4 0.670
68
64
60
52
0.06
0.06
0.07
0.12
0.0340 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. PCR series parts have socketed head cap screws on each end.
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.

<< Back