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Flexible Beam Couplings Shaft Collar in Shell
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FCR Flexible Beam Coupling - Aluminum

Aluminum Clamp Flexible Beam Coupling

Features

  • Torsionally stiff with dampening
  • Aluminum for low inertia
  • 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 225°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 0.360 0.0013
3° 0.008 0.005
FCR10-3-3-A 0.188 0.188 0.625 1.000 0.796 0.472 M2.5 13 0.360 0.0013
3° 0.008 0.005
FCR10-4-3-A 0.250 0.188 13 0.360
FCR10-4-4-A 0.250 0.250 13 0.360
FCR12 3/16" to 5/16" 0.750 1.250 0.879 0.593 M3 ≤ 26 ≤ 0.229 0.0036
3° 0.008 0.005
FCR12-3-3-A 0.188 0.188 0.750 1.250 0.879 0.593 M3 26 0.152 0.0036
3° 0.008 0.005
FCR12-4-3-A 0.250 0.188 26 0.152
FCR12-4-4-A 0.250 0.250 26 0.152
FCR12-5-3-A 0.313 0.188 20 0.229
FCR12-5-4-A 0.313 0.250 20 0.229
FCR12-5-5-A 0.313 0.313 20 0.229
FCR16 1/4" to 3/8" 1.000 1.500 1.117 0.704 M4 ≤ 35 ≤ 0.093 0.0139
3° 0.015 0.010
FCR16-4-4-A 0.250 0.250 1.000 1.500 1.117 0.704 M4 35 0.064 0.0139
3° 0.015 0.010
FCR16-5-4-A 0.313 0.250 33 0.093
FCR16-5-5-A 0.313 0.313 33 0.093
FCR16-6-4-A 0.375 0.250 33 0.093
FCR16-6-5-A 0.375 0.313 33 0.093
FCR16-6-6-A 0.375 0.375 33 0.093
FCR20 5/16" to 1/2" 1.250 1.750 1.459 0.820 M5 ≤ 70 ≤ 0.072 0.0401
3° 0.015 0.010
FCR20-5-5-A 0.313 0.313 1.250 1.750 1.459 0.820 M5 70 0.038 0.0401
3° 0.015 0.010
FCR20-6-5-A 0.375 0.313 61 0.048
FCR20-6-6-A 0.375 0.375 61 0.048
FCR20-8-5-A 0.500 0.313 50 0.072
FCR20-8-6-A 0.500 0.375 50 0.072
FCR20-8-8-A 0.500 0.500 50 0.072
FCR24 3/8" to 3/4" 1.500 2.250 1.642 1.042 M5 ≤ 120 ≤ 0.063 0.1023
3° 0.030 0.015
FCR24-6-6-A 0.375 0.375 1.500 2.250 1.642 1.042 M5 120 0.022 0.1023
3° 0.030 0.015
FCR24-8-6-A 0.500 0.375 110 0.029
FCR24-8-8-A 0.500 0.500 110 0.029
FCR24-10-6-A 0.625 0.375 95 0.043
FCR24-10-8-A 0.625 0.500 95 0.043
FCR24-10-10-A 0.625 0.625 95 0.043
FCR24-12-6-A 0.750 0.375 80 0.063
FCR24-12-8-A 0.750 0.500 80 0.063
FCR24-12-10-A 0.750 0.625 80 0.063
FCR24-12-12-A 0.750 0.750 80 0.063

 

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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