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RULAND Carefully Made Shaft Collars and Couplings German Chinese English since 1937 Ruland Shaft Collars & Shaft Couplings
Flexible Beam Couplings Shaft Collar in Shell
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PCR Flexible Beam Coupling - Stainless Steel

Stainless Steel Clamp Flexible Beam Coupling

Features

  • Zero-backlash
  • Torsionally rigid with dampening
  • Bore tolerance: +.002"/–.000"
  • Maximum speed: 6,000 RPM
  • Temperature range: -40°F to 350°F



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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
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
M-Series Four Beam Couplings
 
  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
7.5
0.751
0.0003 3° 0.008 0.005
PCR8
1.5 (.0938)
2 (.1875)
1.5 (.0938)
2 (.1875)
0.500 0.750 M2 0.265
11
11
0.368
0.368
0.0012 3° 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
20
16
16
0.184
0.286
0.286
0.0030 3° 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
35
23
23
19
0.085
0.151
0.151
0.179
0.0070 3° 0.008 0.005
PCR14
3 (0.1875)
4 (0.2500)
5 (0.3125)
3 (0.1875)
4 (0.2500)
5 (0.3125)
0.875 1.063 M3 0.450
27
24
22
0.091
0.107
0.135
0.0157 3° 0.008 0.005
PCR16
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
49
44
41
0.079
0.094
0.103
0.0317 3° 0.015 0.010
PCR18
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 M4 0.670
63
60
54
46
0.053
0.056
0.071
0.111
0.0603 3° 0.015 0.010
PCR20
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 M4 0.670
92
86
81
70
0.031
0.037
0.044
0.064
0.0922 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. 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 Shafts may penetrate up to 0.5 x L. Be certain shafts do not touch.

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