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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Two dual flanged elements can be bolted together to form a dual element having twice the torque capacity of a single element. Dual elements can be furnished in sizes 12CB350 through 45CB525.
Dual Flange CB Elements (Sizes 12 to 45)
Unit of Measure
Items Dual Flange CB Elements (Sizes 12 to 45)
142731
Dual Flange CB Elements (Sizes 12 to 45) 		Dual Flange CB Elements (Sizes 12 to 45)
142604
Dual Flange CB Elements (Sizes 12 to 45) 		Dual Flange CB Elements (Sizes 12 to 45)
142432
Dual Flange CB Elements (Sizes 12 to 45) 		Dual Flange CB Elements (Sizes 12 to 45)
142433
Dual Flange CB Elements (Sizes 12 to 45) 		Dual Flange CB Elements (Sizes 12 to 45)
142434
Dual Flange CB Elements (Sizes 12 to 45)
Size N/A 12CB350 N/A 14CB400 N/A 16CB500 N/A 18CB500 N/A 20CB500
Torque Rating (75 psi/5.5 bar)1 N/A 26600 lb·in3010 Nm N/A 39400 lb·in4450 Nm N/A 70400 lb·in7960 Nm N/A 88000 lb·in9940 Nm N/A 107200 lb·in12100 Nm
Maximum Speed2 N/A 1800 rpm N/A 1800 rpm N/A 1550 rpm N/A 1400 rpm N/A 1300 rpm
Centrifugal Loss Constant Cs N/A 0.83 E-06 bar/rpm2 12 E-06 psi/rpm2 N/A 1.04 E-06 bar/rpm2 15 E-06 psi/rpm2 N/A 1.38 E-06 bar/rpm2 20 E-06 psi/rpm2 N/A 1.59 E-06 bar/rpm2 23 E-06 psi/rpm2 N/A 1.73 E-06 bar/rpm2 25 E-06 psi/rpm2
Inertia N/A 25 lb·ft²1.05 kg·m² N/A 42 lb·ft²1.76 kg·m² N/A 106 lb·ft²4.45 kg·m² N/A 144 lb·ft²6.05 kg·m² N/A 185 lb·ft²7.77 kg·m²
Weight N/A 62 lb28 kg N/A 75 lb34 kg N/A 151 lb68 kg N/A 166 lb75 kg N/A 180 lb82 kg
Friction Area N/A 256 in²1651 cm² N/A 340 in²2193 cm² N/A 482 in²3109 cm² N/A 524 in²3380 cm² N/A 576 in²3715 cm²
New Friction Lining Thickness N/A 0.20 in5 mm N/A 0.20 in5 mm N/A 0.26 in7 mm N/A 0.26 in7 mm N/A 0.26 in7 mm
Worn Friction Lining Thickness N/A 0.06 in2 mm
Air Tube Cavity3 N/A 160 in³2.62 dm³ N/A 140 in³2.30 dm³ N/A 280 in³4.59 dm³ N/A 320 in³5.25 dm³ N/A 340 in³5.58 dm³
Minimum Drum Diameter N/A 11.9 in302 mm N/A 13.9 in353 mm N/A 15.87 in403 mm N/A 17.87 in454 mm N/A 19.87 in505 mm
Dimension D2 N/A 10.13 in257 mm N/A 11.13 in283 mm N/A 13.63 in346 mm N/A 13.63 in346 mm N/A 13.63 in346 mm
Dimension D25 N/A 0.19 in5 mm
Dimension G4 N/A 17.625 in447.7 mm N/A 19.625 in498.5 mm N/A 23.500 in596.9 mm N/A 25.500 in647.7 mm N/A 27.500 in698.5 mm
Dimension H2 N/A 16.875 in428.6 mm N/A 18.875 in479.4 mm N/A 22.500 in571.5 mm N/A 24.375 in619.1 mm N/A 26.375 in669.9 mm
Dimension H6 N/A 12.13 in308 mm N/A 14.13 in359 mm N/A 16.19 in411 mm N/A 18.19 in462 mm N/A 20.19 in513 mm
Dimension H7 N/A 16.88 in429 mm N/A 18.88 in479 mm N/A 22.25 in565 mm N/A 24.38 in619 mm N/A 26.38 in670 mm
Number of Mounting Holes N/A 14 N/A 16 N/A 8 N/A 12 N/A 12
Bolt Hole Size L N/A 0.375 in10 mm N/A 0.375 in10 mm N/A 0.500 in13 mm N/A 0.500 in13 mm N/A 0.500 in13 mm
Dimension O3 N/A 0.31 in8 mm N/A 0.31 in8 mm N/A 0.38 in10 mm N/A 0.38 in10 mm N/A 0.38 in10 mm
Air Inlet Thread N/A 3/8-18
Angle Q N/A 12.857 º N/A 11.250 º N/A 22.500 º N/A 15.000 º N/A 15.000 º
Dimension V N/A 0.69 in17 mm N/A 0.69 in17 mm N/A 0.81 in21 mm N/A 0.81 in21 mm N/A 0.81 in21 mm
Number of Friction Shoes N/A 24 N/A 28 N/A 20 N/A 22 N/A 24
Friction Shoe Width (W) N/A 8.75 in222 mm N/A 9.75 in248 mm N/A 12.00 in305 mm N/A 12.00 in305 mm N/A 12.00 in305 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:
    12 thru 24, 28 and 32
    +0.000/-0.005 in (+0.00/-0.13 mm)
    26 and 30
    +0.000/-0.008 in (+0.00/-0.20 mm)
    36 thru 45
    +0.000/-0.010 in (+0.00/-0.25 mm)