The Rowland Company - CB Mounting Components - External Flange Drums

Products Catalog

Section B
Form CB 428
The type CB element assembly is designed and built to provide dependable clutch or brake service in the most exacting industrial applications. It is suited to high speed, cyclic operations, as well as for coupling and general power transmission.

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Unit of Measure

Items	411778 Single Drum	411779 Single Drum	411780 Single Drum	411781 Single Drum	411782 Single Drum
Size	N/A 12CB350	N/A 14CB400	N/A 16CB500	N/A 18CB500	N/A 20CB500
Dimension F	N/A 0.75 in19 mm	N/A 0.75 in19 mm	N/A 0.75 in19 mm	N/A 0.75 in19 mm	N/A 1.00 in25 mm
Dimension H₁¹	N/A 12 in305 mm	N/A 14 in356 mm	N/A 16 in406 mm	N/A 18 in457 mm	N/A 20 in508 mm
Dimension D₆	N/A 6.00 in152 mm	N/A 6.63 in168 mm	N/A 8.00 in203 mm	N/A 8.00 in203 mm	N/A 8.00 in203 mm
Dimension H₉	N/A 13.125 in333.4 mm	N/A 17.250 in438.2 mm	N/A 19.250 in489 mm	N/A 21.375 in542.9 mm	N/A 25.250 in641.4 mm
Dimension H₁₀²	N/A 13.875 in352.4 mm	N/A 18.375 in466.7 mm	N/A 20.375 in517.5 mm	N/A 22.500 in571.5 mm	N/A 26.500 in673.1 mm
Number of Mounting Holes	N/A 8	N/A 8	N/A 8	N/A 6	N/A 12
Bolt Diameter L	N/A 0.406 in10 mm	N/A 0.531 in13 mm	N/A 0.531 in13 mm	N/A 0.531 in13 mm	N/A 0.656 in17 mm
Weight	N/A 26 lb2.9 kg	N/A 45 lb8.2 kg	N/A 63 lb14 kg	N/A 72 lb20 kg	N/A 126 lb46 kg
Inertia	N/A 6.4 lb·ft²0.27 kg·m²	N/A 18 lb·ft²0.76 kg·m²	N/A 31 lb·ft²1.3 kg·m²	N/A 44 lb·ft²1.85 kg·m²	N/A 102 lb·ft²4.28 kg·m²
Manufacturer	N/A Eaton-Airflex
¹ Tolerance +0.000/-0.010 in (+0.00/-0.25 mm). ² Tolerance +0.000/-0.010 in (+0.00/-0.25 mm).

4900 North 20th St. Philadelphia, PA 19144
P: (800) 925-8824 P: (215) 455-4900
F: (215) 455-8888 rowland@rowland2.com

Since 1732, The Rowland Company is a specialty distributor/fabricator of industrial power transmission components. The Rowland Company specializes in providing solutions to our customers, tailored to their specific needs. Typically, the products used in these applications are brakes, clutches, couplings, universal joints, gear boxes, variable speed drives, friction material, crane electrification and other related items.