Products Catalog
Section B
Form CB-402
Unit of Measure

Specifications

Size

 20CB500
Torque Rating (75 psi/5.5 bar)1 53600 lb·in6060 Nm
Maximum Speed2 1300 rpm

Centrifugal Loss Constant Cs

 1.73 E-06 bar/rpm2 25 E-06 psi/rpm2

Inertia

 90 lb·ft²3.78 kg·m²

Weight

 88 lb40 kg

Friction Area

 288 in²1858 cm²

New Friction Lining Thickness

 0.26 in7 mm

Worn Friction Lining Thickness

 0.06 in2 mm
Air Tube Cavity3 170 in³2.79 dm³

Minimum Drum Diameter

 19.87 in505 mm

Dimension D2

 6.63 in168 mm

Dimension D24

 2.50 in64 mm

Dimension D25

 0.19 in5 mm
Dimension G4 27.500 in698.5 mm

Dimension G1

 24.75 in629 mm

Dimension H2

 26.375 in669.9 mm

Dimension H6

 20.19 in513 mm

Dimension H7

 26.38 in670 mm

Number of Mounting Holes

 12

Bolt Hole Size L

 0.500 in13 mm

Dimension O3

 0.38 in10 mm

Air Inlet Thread

 3/8-18

Angle Q

 15.000 º

Dimension V

 0.81 in21 mm

Number of Friction Shoes

 12

Friction Shoe Width (W)

 5.00 in127 mm

Note

N/A Refers to basic part number only. When ordering, the number of air inlets and type of connection must be specified.

  • 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)