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Bore Dia. (A) 
The internal diameter measurement at position A
Bore Dia. (B) The internal diameter measurement at position B
Horse Power @ 1750 RPM The power output measured at 1750 revolutions per minute
D Ref. Reference measurement D
E Ref. Reference measurement E
Torque Rating The maximum torque capacity rating
C Measurement point C
F Measurement point F
Dynaflex® Couplings
For Low Frequency Vibration Isolation and Misalignment Accommodation
Compact, one-piece flexible couplings economically constructed to isolate low-frequency vibration and accommodate multi-directional misalignment.
Large Selection of Standard Sizes
Fractional horsepower couplings are available in a range of sizes to permit matching a specific coupling to your application.
Standard Construction:
- Hubs – steel
- Bores – as listed
- Set Screws – one per hub furnished but not installed
- Flexing Element – neoprene
Compact, one-piece coupling construction is convenient for small equipment with fractional horsepower requirements. Torsional deflection at rated torque assures excellent vibration isolation. Specified torque rating allows 15° angular deflection for excellent vibration isolation.
Max. recommended Misalignments: 1/32 in. parallel, 2° angular.
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Item #
Bore Dia. A (in)
Bore Dia. B (in)
Horse Power @ 1750 RPM (hp)
D Ref. (in)
E Ref. (in)
Torque Rating (lb·in)
C (in)
F (in)
Actions
J-1211-1-5
0.312
0.312
1/16
0.81
0.56
2.5
0.63
1.38
J-1211-3-8
0.375
1/2
1/4
1.25
0.88
10
0.88
2.13
J-1211-3-2
0.375
3/8
1/4
1.25
0.88
10
0.88
2.13
J-1211-3-12
0.312
1/2
1/4
1.25
0.88
10
0.88
2.13
J-1211-3-14
0.312
3/8
1/4
1.25
0.88
10
0.88
2.13
J-1211-3-4
0.312
0.312
1/4
1.25
0.88
10
0.88
2.13
J-1211-2-1
0.375
3/8
1/8
1
0.72
5
0.75
1.75
J-1211-2-12
0.312
3/8
1/8
1
0.72
5
0.75
1.75
J-1211-2-3
0.312
0.312
1/8
1
0.72
5
0.75
1.75
J-1211-2-6
0.25
3/8
1/8
1
0.72
5
0.75
1.75
J-1211-2-11
0.25
0.312
1/8
1
0.72
5
0.75
1.75
J-1211-2-2
0.25
1/4
1/8
1
0.72
5
0.75
1.75
J-1211-3-1
0.5
1/2
1/4
1.25
0.88
10
0.88
2.13
J-1211-1-9
0.25
0.312
1/16
0.81
0.56
2.5
0.63
1.38
J-1211-1-1
0.25
1/4
1/16
0.81
0.56
2.5
0.63
1.38
1 Categories / 45 Parts
