The Rowland Company
The Rowland Company
4900 North 20th St.
Philadelphia, PA 19144
Toll Free: (800) 925-8824
Phone: (215) 455-4900
Fax: (215) 455-8888
Email: rowland@rowland2.com
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Section B
Form CB-402
Unit of Measure

Specifications

Size

 18CB500
Torque Rating (75 psi/5.5 bar)1 44000 lb·in4970 Nm
Maximum Speed2 1400 rpm

Centrifugal Loss Constant Cs

 1.59 E-06 bar/rpm2 23 E-06 psi/rpm2

Inertia

 70 lb·ft²2.94 kg·m²

Weight

 81 lb37 kg

Friction Area

 262 in²1690 cm²

New Friction Lining Thickness

 0.26 in7 mm

Worn Friction Lining Thickness

 0.06 in2 mm
Air Tube Cavity3 160 in³2.62 dm³

Minimum Drum Diameter

 17.87 in454 mm

Dimension D2

 6.63 in168 mm

Dimension D24

 2.50 in64 mm

Dimension D25

 0.19 in5 mm
Dimension G4 25.500 in647.7 mm

Dimension G1

 22.75 in578 mm

Dimension H2

 24.375 in619.1 mm

Dimension H6

 18.19 in462 mm

Dimension H7

 24.38 in619 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

 11

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)