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

Stainless Steel Set Screw Flexible Beam Coupling

Features

  • High torque and torsional stiffness
  • 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)		 Set
Screw		 Static
Torque
(lb-in)		 Torsional
Stiffness
(Deg/lb-in)		 Moment
of Inertia
(lb-in²)		 MISALIGNMENT
Angular Parallel (in) Axial Motion (in)
FSR10 3/16" to 1/4" 0.625 1.000 0.472 M4 18 0.088 0.0037
3° 0.008 0.005
FSR10-3-3-SS 0.188 0.188 0.625 1.000 0.472 M4 18 0.088 0.0037
3° 0.008 0.005
FSR10-4-3-SS 0.250 0.188 18 0.088
FSR10-4-4-SS 0.250 0.250 18 0.088
FSR12 3/16" to 5/16" 0.750 1.250 0.593 M4 ≤ 41 ≤ 0.096 0.0100
3° 0.008 0.005
FSR12-3-3-SS 0.188 0.188 0.750 1.250 0.593 M4 41 0.079 0.0100
3° 0.008 0.005
FSR12-4-3-SS 0.250 0.188 41 0.079
FSR12-4-4-SS 0.250 0.250 41 0.079
FSR12-5-3-SS 0.313 0.188 31 0.096
FSR12-5-4-SS 0.313 0.250 31 0.096
FSR12-5-5-SS 0.313 0.313 31 0.096
FSR16 1/4" to 3/8" 1.000 1.500 0.704 M5 ≤ 53 ≤ 0.046 0.0381
3° 0.015 0.010
FSR16-4-4-SS 0.250 0.250 1.000 1.500 0.704 M5 53 0.034 0.0381
3° 0.015 0.010
FSR16-5-4-SS 0.313 0.250 50 0.046
FSR16-5-5-SS 0.313 0.313 50 0.046
FSR16-6-4-SS 0.375 0.250 50 0.046
FSR16-6-5-SS 0.375 0.313 50 0.046
FSR16-6-6-SS 0.375 0.375 50 0.046
FSR20 5/16" to 1/2" 1.250 1.750 0.820 M6 ≤ 142 ≤ 0.037 0.1094
3° 0.015 0.010
FSR20-5-5-SS 0.313 0.313 1.250 1.750 0.820 M6 142 0.017 0.1094
3° 0.015 0.010
FSR20-6-5-SS 0.375 0.313 129 0.023
FSR20-6-6-SS 0.375 0.375 129 0.023
FSR20-8-5-SS 0.500 0.313 107 0.037
FSR20-8-6-SS 0.500 0.375 107 0.037
FSR20-8-8-SS 0.500 0.500 107 0.037
FSR24 3/8" to 3/4" 1.500 2.250 1.042 M6 ≤ 208 ≤ 0.045 0.2814
3° 0.030 0.015
FSR24-6-6-SS 0.375 0.375 1.500 2.250 1.042 M6 208 0.016 0.2814
3° 0.030 0.015
FSR24-8-6-SS 0.500 0.375 190 0.021
FSR24-8-8-SS 0.500 0.500 190 0.021
FSR24-10-6-SS 0.625 0.375 175 0.031
FSR24-10-8-SS 0.625 0.500 175 0.031
FSR24-10-10-SS 0.625 0.625 175 0.031
FSR24-12-6-SS 0.750 0.375 145 0.045
FSR24-12-8-SS 0.750 0.500 145 0.045
FSR24-12-10-SS 0.750 0.625 145 0.045
FSR24-12-12-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 black oxide finish. Stainless steel hardware is available upon request. Parts FSR10 and FSR12 have one set screw on each end. Parts FSR16, FSR20, and FSR24 have two set screws on each end 120° apart.
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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