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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8CB250 Element
Form CB-401
 
 
 
Unit of Measure

Specifications

Size

 8CB250
Torque Rating (75 psi/5.5 bar)1 4290 lb·in485 Nm
Maximum Speed2 1800 rpm

Centrifugal Loss Constant Cs

 0.48 E-06 bar/rpm2 7.0 E-06 psi/rpm2

Inertia

 2.0 lb·ft²0.08 kg·m²

Weight

 9 lb4.1 kg

Friction Area

 61 in²393.5 cm²

New Friction Lining Thickness

 0.12 in3 mm

Worn Friction Lining Thickness

 0.06 in2 mm
Air Tube Cavity3 30 in³0.49 dm³

Minimum Drum Diameter

 7.90 in201 mm

Dimension D2

 3.44 in87 mm

Dimension D24

 1.91 in48 mm

Dimension D25

 0.09 in2 mm
Dimension G4 12.875 in327 mm

Dimension G1

 11.19 in284 mm

Dimension H2

 12.125 in308 mm

Dimension H6

 8.16 in207 mm

Dimension H7

 12.13 in308 mm

Number of Mounting Holes

 8

Bolt Hole Size L

 0.38 in10 mm

Dimension O3

 0.31 in8 mm

Air Inlet Thread

 3/8-18

Angle Q

 22.500 º

Dimension V

 0.56 in14 mm

Number of Friction Shoes

 8

Friction Shoe Width (W)

 2.50 in64 mm

Manufacturer

 Airflex

Note

N/A Refers to basic part number only. When ordering, the number of air inlets and type of connection must be specified. For example 142096JA, 142096JB, 142096JC, 142096JG

 
 
 
  • 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)