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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12CB350 Element
Form CB-401
Unit of Measure

Specifications

Size

 12CB350
Torque Rating (75 psi/5.5 bar)1 13300 lb·in1500 Nm
Maximum Speed2 1800 rpm

Centrifugal Loss Constant Cs

 0.83 E-06 bar/rpm2 12.0 E-06 psi/rpm2

Inertia

 11.0 lb·ft²0.46 kg·m²

Weight

 26 lb12 kg

Friction Area

 128 in²825.6 cm²

New Friction Lining Thickness

 0.20 in5 mm

Worn Friction Lining Thickness

 0.06 in2 mm
Air Tube Cavity3 80 in³1.31 dm³

Minimum Drum Diameter

 11.90 in302 mm

Dimension D2

 4.72 in120 mm

Dimension D24

 2.00 in51 mm

Dimension D25

 0.19 in5 mm
Dimension G4 17.625 in447.7 mm

Dimension G1

 15.88 in403 mm

Dimension H2

 16.875 in428.6 mm

Dimension H6

 12.13 in308 mm

Dimension H7

 16.88 in429 mm

Number of Mounting Holes

 14

Bolt Hole Size L

 0.38 in10 mm

Dimension O3

 0.31 in8 mm

Air Inlet Thread

 3/8-18

Angle Q

 12.857 º

Dimension V

 0.69 in17 mm

Number of Friction Shoes

 12

Friction Shoe Width (W)

 3.50 in89 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. 

  • 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)