PTI Bearing Catalog - Norfolkbearings.com

Flexible Shaft Couplings
HRC Series Jaw Type
Technical Data
Coupling Torque Torque Max
Misalignment (mm) Inertia - kgm 2 Weight-kg
Size Nom (Nm) Max (Nm) rpm Axial Radial Angular Bored Bushed Bored Bushed
7 33 73 7700 0.2 0.3 0.5 0.00085 0.00078 1.0 1.1
9 84 185 6300 0.5 0.3 0.5 0.00115 0.00108 1.7 1.7
11 168 370 5000 0.6 0.3 1.0 0.00400 0.00344 4.2 5.0
13 331 728 4100 0.8 0.4 1.0 0.00780 0.00850 5.5 6.3
15 630 1490 3600 0.9 0.4 1.5 0.01810 0.02112 7.1 9.5
18 998 2300 3000 1.1 0.4 1.5 0.04340 0.04820 15.0 16.6
23 2100 4800 2600 1.3 0.5 2.0 0.12068 0.14052 26.0 28.0
28 3308 7000 2200 1.7 0.5 2.5 0.44653 0.54790 50.0 63.0
Note: Elements are oil resistant, partially resistant to chemicals. Temp Range: -40F to 185F.
Stock Taper Bushings/Shaft Sizes for F and H Coupling Hubs
Inch Shaft Sizes
Metric Shaft Sizes
Coupling Size 7 9 11, 13 15 18 23, 28 Coupling Size 7 9 11, 13 15 18 23, 28
Bushing Size 1008 1108 1610 2012 2517 3020 Bushing Size 1008 1108 1610 2012 2517 3020
Shaft Dia. (in) Shaft Dia. (mm)
1/2 0.5000 X X 11 X X
9/16 0.5625 X X X 12 X X X
5/8 0.6250 X X X 14 X X X
11/16 0.6875 X X X 15 X X X X
3/4 0.7500 X X X X 16 X X X X
7/8 0.8750 X X X X 18 X X X X X
15/16 0.9375 (X) X X X 19 X X X X X
1 1.0000 (X) X X X 20 X X X X X
1-1/8 1.1250 (X) X X 22 X X X X X
1-3/16 1.1875 X X 24 (X) X X X X
1-1/4 1.2500 X X 25 (X) X X X X X
1-3/8 1.3750 X X X X 28 (X) X X X X
1-7/16 1.4375 X X X X 30 X X X X
1-1/2 1.5000 X X X X 32 X X X X
1-5/8 1.6250 (X) X X X 35 X X X X
1-3/4 1.7500 X X X 38 X X X X
1-7/8 1.8750 X X X 40 X X X X
1-15/16 1.9375 (X) X X 42 (X) X X X
2 2.0000 (X) X X 45 X X X
2-1/8 2.1250 X X 48 X X X
2-3/16 2.1875 X X 50 X X X
2-1/4 2.2500 X X 55 X X
2-3/8 2.3750 X X 60 X X
2-7/16 2.4375 X X 65 X X
2-1/2 2.5000 X X 70 X
2-5/8 2.6250 X 75 X
2-3/4 2.7500 X
Note: (x) denotes shallow key required.
2-7/8 2.8750 X
Specify Bushing as follows: 2517-1-3/4 or 2517-35mm.
2-15/16 2.9375 X
3 3.0000 X
433 P.T. International Corp.