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Size
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28CB525
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Torque Rating (75 psi/5.5 bar)1
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106000 lb·in
12000 Nm
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Maximum Speed2
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1000 rpm
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Centrifugal Loss Constant Cs
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2.55 E-06 bar/rpm2
37 E-06 psi/rpm2
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Inertia
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252 lb·ft²
10.58 kg·m²
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Weight
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140 lb
63 kg
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Friction Area
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430 in²
2774 cm²
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New Friction Lining Thickness
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0.33 in
8 mm
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Worn Friction Lining Thickness
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0.06 in
2 mm
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Air Tube Cavity3
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280 in³
4.59 dm³
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Minimum Drum Diameter
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27.81 in
706 mm
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Dimension D2
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6.94 in
176 mm
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Dimension D24
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2.50 in
64 mm
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Dimension D25
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0.25 in
6 mm
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Dimension G4
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36.000 in
914.4 mm
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Dimension G1
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33.00 in
838 mm
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Dimension H2
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34.750 in
882.7 mm
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Dimension H6
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28.19 in
716 mm
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Dimension H7
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34.50 in
876 mm
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Number of Mounting Holes
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16
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Bolt Hole Size L
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0.625 in
16 mm
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Dimension O3
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0.50 in
13 mm
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Air Inlet Thread
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1/2-14
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Angle Q
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11.250 º
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Dimension V
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0.84 in
21 mm
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Number of Friction Shoes
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17
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Friction Shoe Width (W)
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5.25 in
133 mm
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1 Dynamic torque shown, static torque approximately 25% greater. Torque in each application is dependent upon air pressure and speed.
2 Maximum rpm is dependent upon operating conditions and varies for each application. Consult factory for applications exceeding these speeds.
3 Drum contact with worn shoes.
4 Tolerance for sizes:
3 thru 5
+0.000/-0.003 in (+0.00/-0.08 mm)
6 and larger
+0.000/-0.005 in (+0.00/-0.13 mm)
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