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Flexible Beam Couplings Shaft Collar in Shell
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PCR Flexible Beam Coupling - Stainless Steel

Stainless Steel Clamp Flexible Beam Coupling

Features

  • Flexible with low bearing loads
  • Corrosion resistant stainless steel
  • Multiple beam cuts improve parallel misalignment capabilities
  • Zero backlash
  • Constant velocity
  • Bore tolerance: +.001"/–.000"
  • Maximum speed: 6,000 RPM
  • Temperature range: -40°F to 350°F

 

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

Inch to Metric Bore Combinations

  • Beam couplings with inch to metric bore combinations are available by request
  • For help on inch to metric bore combinations please email


 
Flexible Beam Coupling
F-Series
Six Beam Coupling
P-Series
Four Beam Coupling
MW-Series:
Full Metric Dimensions
Coupling Support Form
Product Index
 
 
  Click Right Arrow to expand table | Click part number for 3D CAD file and pricing
Part
Number		 Bore
B1 (in)		 Bore
B2 (in)		 Outer
Diameter
OD (in)		 Length
L (in)		 Shaft
Penetration
(in)		 Cap
Screw		 Static
Torque
(lb-in)		 Torsional
Stiffness
(Deg/lb-in)		 Moment
of Inertia
(lb-in²)		 MISALIGNMENT
Angular Parallel (in) Axial Motion (in)
PCR6 3/32" to 3/32" 0.375 0.563 0.235 M1.6 7.5 0.751 0.0003
3° 0.008 0.005
PCR6-1.5-1.5-SS 0.094 0.094 0.375 0.563 0.235 M1.6 7.5 0.751 0.0003
3° 0.008 0.005
PCR8 3/32" to 1/8" 0.500 0.750 0.265 M2 11 0.368 0.0012
3° 0.008 0.005
PCR8-1.5-1.5-SS 0.094 0.094 0.500 0.750 0.265 M2 11 0.368 0.0012
3° 0.008 0.005
PCR8-2-1.5-SS 0.125 0.094 11 0.368
PCR8-2-2-SS 0.125 0.125 11 0.368
PCR10 1/8" tp 3/16" 0.625 0.800 0.336 M2 ≤ 20 ≤ 0.286 0.0030
3° 0.008 0.005
PCR10-2-2-SS 0.125 0.125 0.625 0.800 0.336 M2 20 0.184 0.0030
3° 0.008 0.005
PCR10-2.5-2-SS 0.156 0.125 16 0.286
PCR10-2.5-2.5-SS 0.156 0.156 16 0.286
PCR10-3-2-SS 0.188 0.125 16 0.286
PCR10-3-2.5-SS 0.188 0.156 16 0.286
PCR10-3-3-SS 0.188 0.188 16 0.286
PCR12 1/8" to 1/4" 0.750 0.900 0.386 M2.5 ≤ 35 ≤ 0.179 0.0070
3° 0.008 0.005
PCR12-2-2-SS 0.125 0.125 0.750 0.900 0.386 M2.5 35 0.085 0.0070
3° 0.008 0.005
PCR12-2.5-2-SS 0.156 0.125 23 0.151
PCR12-2.5-2.5-SS 0.156 0.156 23 0.151
PCR12-3-2-SS 0.188 0.125 23 0.151
PCR12-3-2.5-SS 0.188 0.156 23 0.151
PCR12-3-3-SS 0.188 0.188 23 0.151
PCR12-4-2-SS 0.250 0.125 19 0.179
PCR12-4-2.5-SS 0.250 0.156 19 0.179
PCR12-4-3-SS 0.250 0.188 19 0.179
PCR12-4-4-SS 0.250 0.250 19 0.179
PCR14 3/16" to 5/16" 0.875 1.063 0.450 M3 ≤ 27 ≤ 0.135 0.0157
3° 0.008 0.005
PCR14-3-3-SS 0.188 0.188 0.875 1.063 0.450 M3 27 0.091 0.0157
3° 0.008 0.005
PCR14-4-3-SS 0.250 0.188 24 0.107
PCR14-4-4-SS 0.250 0.250 24 0.107
PCR14-5-3-SS 0.313 0.188 22 0.135
PCR14-5-4-SS 0.313 0.250 22 0.135
PCR14-5-5-SS 0.313 0.313 22 0.135
PCR16 1/4" to 3/8" 1.000 1.250 0.545 M4 ≤ 49 ≤ 0.103 0.0317
3° 0.015 0.010
PCR16-4-4-SS 0.250 0.250 1.000 1.250 0.545 M4 49 0.079 0.0317
3° 0.015 0.010
PCR16-5-4-SS 0.313 0.250 44 0.094
PCR16-5-5-SS 0.313 0.313 44 0.094
PCR16-6-4-SS 0.375 0.250 41 0.103
PCR16-6-5-SS 0.375 0.313 41 0.103
PCR16-6-6-SS 0.375 0.375 41 0.103
PCR18 1/4" to 1/2" 1.125 1.500 0.670 M4 ≤ 63 ≤ 0.111 0.0603
3° 0.015 0.010
PCR18-4-4-SS 0.250 0.250 1.125 1.500 0.670 M4 63 0.053 0.0603
3° 0.015 0.010
PCR18-5-4-SS 0.313 0.250 60 0.056
PCR18-5-5-SS 0.313 0.313 60 0.056
PCR18-6-4-SS 0.375 0.250 54 0.071
PCR18-6-5-SS 0.375 0.313 54 0.071
PCR18-6-6-SS 0.375 0.375 54 0.071
PCR18-8-4-SS 0.500 0.250 46 0.111
PCR18-8-5-SS 0.500 0.313 46 0.111
PCR18-8-6-SS 0.500 0.375 46 0.111
PCR18-8-8-SS 0.500 0.500 46 0.111
PCR20 1/4" to 1/2" 1.250 1.500 0.670 M4 ≤ 92 ≤ 0.064 0.0922
3° 0.015 0.010
PCR20-4-4-SS 0.250 0.250 1.250 1.500 0.670 M4 92 0.031 0.0922
3° 0.015 0.010
PCR20-5-4-SS 0.313 0.250 86 0.037
PCR20-5-5-SS 0.313 0.313 86 0.037
PCR20-6-4-SS 0.375 0.250 81 0.044
PCR20-6-5-SS 0.375 0.313 81 0.044
PCR20-6-6-SS 0.375 0.375 81 0.044
PCR20-8-4-SS 0.500 0.250 70 0.064
PCR20-8-5-SS 0.500 0.313 70 0.064
PCR20-8-6-SS 0.500 0.375 70 0.064
PCR20-8-8-SS 0.500 0.500 70 0.064

 

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. 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 on straight bore couplings upon request. Please consult technical support for more assistance.

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