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RULAND Carefully Made Shaft Collars and Couplings German Chinese English since 1937 Ruland Shaft Collars & Shaft Couplings
Flexible Beam Couplings Shaft Collar in Shell
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FSMR Flexible Beam Coupling - Stainless Steel

Metric Stainless Steel Set Screw Flexible Beam Coupling

Features

  • Zero-backlash
  • Torsionally rigid with dampening
  • Bore tolerance: +.050mm/–.000mm
  • Maximum speed: 6,000 RPM
  • Temperature range: -40°F to 350°F



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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 millimeters:

order bc
P-Series Aluminum Four Beam Couplings
P-Series Stainless Steel Four Beam Couplings
F-Series Aluminum Six Beam Couplings
F-Series Stainless Steel Six Beam Couplings
M-Series Four Beam Couplings
 
  3D CAD files coming soon*
Part
Number		 Bore B1
(mm)		 Bore B2
(mm)		 Outer
Diameter
OD (mm)		 Length
L (mm)		 Set
Screw		 Shaft
Penetration
(mm)		 Static
Torque
(Nm)		 Torsional
Stiffness
(Deg/Nm)		 Moment of
Inertia
(x10-6 kg-m2)		 MISALIGNMENT
Angular Parallel (mm) Axial Motion (mm)
FSMR16
5
6
5
6
15.88 25.4 M4 12.00
2.04
2.04
0.78
0.78
1.097
3° 0.203 0.127
FSMR19
5
6
7
8
5
6
7
8
19.05 31.75 M4 15.06
4.64
4.64
3.51
3.51
0.70
0.70
0.85
0.85
2.964
3° 0.203 0.127
FSMR25
6
7
8
9
10
11
12
6
7
8
9
10
11
12
25.4 38.1 M5 17.87
6.00
6.00
5.66
5.66
5.66
4.40
4.40
0.30
0.30
0.41
0.41
0.41
0.74
0.74
11.293
3° 0.381 0.254
FSMR32
8
9
10
11
12
14
15
8
9
10
11
12
14
15
31.75 44.45 M6 20.82
16.08
16.08
16.08
14.60
14.60
11.32
11.32
0.15
0.15
0.15
0.20
0.20
0.33
0.33
32.426
3° 0.381 0.254
FSMR38
10
11
12
14
15
16
17
19
10
11
12
14
15
16
17
19
38.1 55 M6 26.47
23.53
21.52
21.52
21.52
19.82
19.82
 
16.42
0.14
0.19
0.19
0.19
0.27
0.27
 
0.40
83.407
3° 0.762 0.381

 

Note 1 Static torque 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. FSMR parts have two set screws on each end about 120° apart.
Note 3 Performance ratings are for guidance only. The user must determine suitability for a particular application.
Note 4 Coupling torque and wind-up are determined by the largest bore selected.
Note 5 Shafts may penetrate up to 0.5 x L. Be certain shafts do not touch.

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