Flexible Beam Couplings
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FCR - Flexible Beam Coupling

Aluminum Clamp Beam Coupling

Features

  • Aluminum
    • Torsionally stiff with dampening
    • Lightweight for low inertia
    • Temperature range: -40°F to 225°F
  • Stainless Steel
    • High torque and torsional stiffness
    • Corrosion resistant
    • Temperature range: -40°F to 350°F
  • Multiple beam cuts improve parallel misalignment capabilities
  • Zero backlash
  • Constant velocity
  • RoHS2 and REACH Compliant
  • Maximum speed: 6,000 RPM
  • Bore tolerance: +.001"/–.000"

How to Specify

Part numbers are in the following format with numbers representing sixteenths of an inch:

order fcr

Inch to Metric Bore Combinations

  • Inch to metric bore combinations are available on the F-Series Beam Coupling conversion page
  • For help on inch to metric bore combinations please email

 
 
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  Click part number for full technical specs, CAD files, and pricing
Part Number Material Large
Bore
B1 (in)
Small
Bore
B2 (in)
Outer
Diameter
OD (in)
Length
L (in)
Clearance
Diam. Max
C (in)
Cap
Screw
Static
Torque
(lb-in)
Torsional
Stiffness
(Deg/lb-in)
Moment
of Inertia
(lb-in²)
Angular
(Deg)
Parallel
(in)
Axial
Motion
(in)
                         
FCR10-3-3-A Aluminum 0.188 0.188 0.625 1.000 0.796 M2.5 13 0.360 0.0013 0.008 0.005
FCR10-3-3-SS Stainless 0.188 0.188 0.625 1.000 0.796 M2.5 18 0.088 0.0037 0.008 0.005
FCR10-4-3-A Aluminum 0.250 0.188 0.625 1.000 0.796 M2.5 13 0.360 0.0013 0.008 0.005
FCR10-4-3-SS Stainless 0.250 0.188 0.625 1.000 0.796 M2.5 18 0.088 0.0037 0.008 0.005
FCR10-4-4-A Aluminum 0.250 0.250 0.625 1.000 0.796 M2.5 13 0.360 0.0013 0.008 0.005
FCR10-4-4-SS Stainless 0.250 0.250 0.625 1.000 0.796 M2.5 18 0.088 0.0037 0.008 0.005
FCR12-3-3-A Aluminum 0.188 0.188 0.750 1.250 0.879 M3 26 0.152 0.0036 0.008 0.005
FCR12-3-3-SS Stainless 0.188 0.188 0.750 1.250 0.879 M3 41 0.079 0.0100 0.008 0.005
FCR12-4-3-A Aluminum 0.250 0.188 0.750 1.250 0.879 M3 26 0.152 0.0036 0.008 0.005
FCR12-4-3-SS Stainless 0.250 0.188 0.750 1.250 0.879 M3 41 0.079 0.0100 0.008 0.005
FCR12-4-4-A Aluminum 0.250 0.250 0.750 1.250 0.879 M3 26 0.152 0.0036 0.008 0.005
FCR12-4-4-SS Stainless 0.250 0.250 0.750 1.250 0.879 M3 41 0.079 0.0100 0.008 0.005
FCR12-5-3-A Aluminum 0.313 0.188 0.750 1.250 0.879 M3 20 0.229 0.0036 0.008 0.005
FCR12-5-3-SS Stainless 0.313 0.188 0.750 1.250 0.879 M3 31 0.096 0.0100 0.008 0.005
FCR12-5-4-A Aluminum 0.313 0.250 0.750 1.250 0.879 M3 20 0.229 0.0036 0.008 0.005
FCR12-5-4-SS Stainless 0.313 0.250 0.750 1.250 0.879 M3 31 0.096 0.0100 0.008 0.005
FCR12-5-5-A Aluminum 0.313 0.313 0.750 1.250 0.879 M3 20 0.229 0.0036 0.008 0.005
FCR12-5-5-SS Stainless 0.313 0.313 0.750 1.250 0.879 M3 31 0.096 0.0100 0.008 0.005
FCR16-4-4-A Aluminum 0.250 0.250 1.000 1.500 1.117 M4 35 0.064 0.0139 0.015 0.010
FCR16-4-4-SS Stainless 0.250 0.250 1.000 1.500 1.117 M4 53 0.034 0.0381 0.015 0.010
FCR16-5-4-A Aluminum 0.313 0.250 1.000 1.500 1.117 M4 33 0.093 0.0139 0.015 0.010
FCR16-5-4-SS Stainless 0.313 0.250 1.000 1.500 1.117 M4 50 0.046 0.0381 0.015 0.010
FCR16-5-5-A Aluminum 0.313 0.313 1.000 1.500 1.117 M4 33 0.093 0.0139 0.015 0.010
FCR16-5-5-SS Stainless 0.313 0.313 1.000 1.500 1.117 M4 50 0.046 0.0381 0.015 0.010
FCR16-6-4-A Aluminum 0.375 0.250 1.000 1.500 1.117 M4 33 0.093 0.0139 0.015 0.010
FCR16-6-4-SS Stainless 0.375 0.250 1.000 1.500 1.117 M4 50 0.046 0.0381 0.015 0.010
FCR16-6-5-A Aluminum 0.375 0.313 1.000 1.500 1.117 M4 33 0.093 0.0139 0.015 0.010
FCR16-6-5-SS Stainless 0.375 0.313 1.000 1.500 1.117 M4 50 0.046 0.0381 0.015 0.010
FCR16-6-6-A Aluminum 0.375 0.375 1.000 1.500 1.117 M4 33 0.093 0.0139 0.015 0.010
FCR16-6-6-SS Stainless 0.375 0.375 1.000 1.500 1.117 M4 50 0.046 0.0381 0.015 0.010
FCR20-5-5-A Aluminum 0.313 0.313 1.250 1.750 1.459 M5 70 0.038 0.0401 0.015 0.010
FCR20-5-5-SS Stainless 0.313 0.313 1.250 1.750 1.459 M5 142 0.017 0.1094 0.015 0.010
FCR20-6-5-A Aluminum 0.375 0.313 1.250 1.750 1.459 M5 61 0.048 0.0401 0.015 0.010
FCR20-6-5-SS Stainless 0.375 0.313 1.250 1.750 1.459 M5 129 0.023 0.1094 0.015 0.010
FCR20-6-6-A Aluminum 0.375 0.375 1.250 1.750 1.459 M5 61 0.048 0.0401 0.015 0.010
FCR20-6-6-SS Stainless 0.375 0.375 1.250 1.750 1.459 M5 129 0.023 0.1094 0.015 0.010
FCR20-8-5-A Aluminum 0.500 0.313 1.250 1.750 1.459 M5 50 0.072 0.0401 0.015 0.010
FCR20-8-5-SS Stainless 0.500 0.313 1.250 1.750 1.459 M5 107 0.037 0.1094 0.015 0.010
FCR20-8-6-A Aluminum 0.500 0.375 1.250 1.750 1.459 M5 50 0.072 0.0401 0.015 0.010
FCR20-8-6-SS Stainless 0.500 0.375 1.250 1.750 1.459 M5 107 0.037 0.1094 0.015 0.010
FCR20-8-8-A Aluminum 0.500 0.500 1.250 1.750 1.459 M5 50 0.072 0.0401 0.015 0.010
FCR20-8-8-SS Stainless 0.500 0.500 1.250 1.750 1.459 M5 107 0.037 0.1094 0.015 0.010
FCR24-10-10-A Aluminum 0.625 0.625 1.500 2.250 1.642 M5 95 0.043 0.1023 0.030 0.015
FCR24-10-10-SS Stainless 0.625 0.625 1.500 2.250 1.642 M6 175 0.031 0.2814 0.030 0.015
FCR24-10-6-A Aluminum 0.625 0.375 1.500 2.250 1.642 M5 95 0.043 0.1023 0.030 0.015
FCR24-10-6-SS Stainless 0.625 0.375 1.500 2.250 1.642 M6 175 0.031 0.2814 0.030 0.015
FCR24-10-8-A Aluminum 0.625 0.500 1.500 2.250 1.642 M5 95 0.043 0.1023 0.030 0.015
FCR24-10-8-SS Stainless 0.625 0.500 1.500 2.250 1.642 M6 175 0.031 0.2814 0.030 0.015
FCR24-12-10-A Aluminum 0.750 0.625 1.500 2.250 1.642 M5 80 0.063 0.1023 0.030 0.015
FCR24-12-10-SS Stainless 0.750 0.625 1.500 2.250 1.642 M6 145 0.045 0.2814 0.030 0.015
FCR24-12-12-A Aluminum 0.750 0.750 1.500 2.250 1.642 M5 80 0.063 0.1023 0.030 0.015
FCR24-12-12-SS Stainless 0.750 0.750 1.500 2.250 1.642 M6 145 0.045 0.2814 0.030 0.015
FCR24-12-6-A Aluminum 0.750 0.375 1.500 2.250 1.642 M5 80 0.063 0.1023 0.030 0.015
FCR24-12-6-SS Stainless 0.750 0.375 1.500 2.250 1.642 M6 145 0.045 0.2814 0.030 0.015
FCR24-12-8-A Aluminum 0.750 0.500 1.500 2.250 1.642 M5 80 0.063 0.1023 0.030 0.015
FCR24-12-8-SS Stainless 0.750 0.500 1.500 2.250 1.642 M6 145 0.045 0.2814 0.030 0.015
FCR24-6-6-A Aluminum 0.375 0.375 1.500 2.250 1.642 M5 120 0.022 0.1023 0.030 0.015
FCR24-6-6-SS Stainless 0.375 0.375 1.500 2.250 1.642 M6 208 0.016 0.2814 0.030 0.015
FCR24-8-6-A Aluminum 0.500 0.375 1.500 2.250 1.642 M5 110 0.029 0.1023 0.030 0.015
FCR24-8-6-SS Stainless 0.500 0.375 1.500 2.250 1.642 M6 190 0.021 0.2814 0.030 0.015
FCR24-8-8-A Aluminum 0.500 0.500 1.500 2.250 1.642 M5 110 0.029 0.1023 0.030 0.015
FCR24-8-8-SS Stainless 0.500 0.500 1.500 2.250 1.642 M6 190 0.021 0.2814 0.030 0.015
 
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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