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

Stainless Steel Clamp Flexible Beam Coupling

Features

  • High torque and torsional stiffness
  • Corrosion resistant stainless steel
  • Multiple beams cuts improve parallel misalignment capabilities
  • Zero backlash
  • 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)		 Clearance
Diam. Max
C (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)
FCR10 3/16" to 1/4" 0.625 1.000 0.796 0.472 M2.5 13 0.088 0.0037
3° 0.008 0.005
FCR10-3-3-SS 0.188 0.188 0.625 1.000 0.796 0.472 M2.5 18 0.088 0.0037
3° 0.008 0.005
FCR10-4-3-SS 0.250 0.188 18 0.088
FCR10-4-4-SS 0.250 0.250 18 0.088
FCR12 3/16" to 5/16" 0.750 1.250 0.879 0.593 M3 ≤ 41 ≤ 0.096 0.0100
3° 0.008 0.005
FCR12-3-3-SS 0.188 0.188 0.750 1.250 0.879 0.593 M3 41 0.079 0.0100
3° 0.008 0.005
FCR12-4-3-SS 0.250 0.188 41 0.079
FCR12-4-4-SS 0.250 0.250 41 0.079
FCR12-5-3-SS 0.313 0.188 31 0.096
FCR12-5-4-SS 0.313 0.250 31 0.096
FCR12-5-5-SS 0.313 0.313 31 0.096
FCR16 1/4" to 3/8" 1.000 1.500 1.117 0.704 M4 ≤ 53 ≤ 0.046 0.0381
3° 0.015 0.010
FCR16-4-4-SS 0.250 0.250 1.000 1.500 1.117 0.704 M4 53 0.034 0.0381
3° 0.015 0.010
FCR16-5-4-SS 0.313 0.250 50 0.046
FCR16-5-5-SS 0.313 0.313 50 0.046
FCR16-6-4-SS 0.375 0.250 50 0.046
FCR16-6-5-SS 0.375 0.313 50 0.046
FCR16-6-6-SS 0.375 0.375 50 0.046
FCR20 5/16" to 1/2" 1.250 1.750 1.459 0.820 M5 ≤ 142 ≤ 0.037 0.1094
3° 0.015 0.010
FCR20-5-5-SS 0.313 0.313 1.250 1.750 1.459 0.820 M5 142 0.017 0.1094
3° 0.015 0.010
FCR20-6-5-SS 0.375 0.313 129 0.023
FCR20-6-6-SS 0.375 0.375 129 0.023
FCR20-8-5-SS 0.500 0.313 107 0.037
FCR20-8-6-SS 0.500 0.375 107 0.037
FCR20-8-8-SS 0.500 0.500 107 0.037
FCR24 3/8" to 3/4" 1.500 2.250 1.642 1.042 M6 ≤ 208 ≤ 0.045 0.2814
3° 0.030 0.015
FCR24-6-6-SS 0.375 0.375 1.500 2.250 1.642 1.042 M6 208 0.016 0.2814
3° 0.030 0.015
;
FCR24-8-6-SS 0.500 0.375 190 0.021
FCR24-8-8-SS 0.500 0.500 190 0.021
FCR24-10-6-SS 0.625 0.375 175 0.031
FCR24-10-8-SS 0.625 0.500 175 0.031
FCR24-10-10-SS 0.625 0.625 175 0.031
FCR24-12-6-SS 0.750 0.375 145 0.045
FCR24-12-8-SS 0.750 0.500 145 0.045
FCR24-12-10-SS 0.750 0.625 145 0.045
FCR24-12-12-SS 0.750 0.750 145 0.045

 

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 a black oxide finish and Nypatch® socket head cap screws. Stainless steel hardware is available upon request.
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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