Products Catalog
Model DBA brakes are spring applied, pressure released, disc style brakes. They develop equal torque in either direction of rotation. Their torque and thermal capacities allow them to be used in the most demanding applications.

Brake construction and operation is shown in the figure. Pressurizing the brake compresses the brake springs and withdraws the clamping plates from the brake discs. Standard brakes are furnished with either one or two discs, which are free to move axially.

Model DBA uses a rubber diaphragm to form the releasing pressure chamber and to serve as the releasing piston. Brake friction material is attached to stationary components. Brake discs are either solid or ventilated. The disc type is indicated by an S for solid, or V, for ventilated, in the brake model designation. Solid discs are used in applications requiring a heat sink and/or where engagement is infrequent. Ventilated discs are recommended for cyclic applications.

Torque ratings listed are for brakes with a standard compliment of springs. The quantity of springs can be varied to customize the torque of the brake to suit a particular application. Consult the factory for brake torque of units with nonstandard spring configurations.

Brake sizes are indicated by the number of brake discs and the disc diameter in inches. For instance, size 229DBA has two discs 29 inches in diameter.
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Item #

Dimension H13

Gear Part Number

Dynamic Torque Rating

Manufacturer

Actuation

146148 N/A 10.00 in254 mm N/A 413113 N/A 20500 lb·in2320 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146152 N/A 10.00 in254 mm N/A 413248 N/A 38000 lb·in4290 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146145 N/A 12.12 in308 mm N/A 413534 N/A 52500 lb·in5930 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146151 N/A 12.12 in308 mm N/A 413535 N/A 96000 lb·in10800 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146162 N/A 14.75 in375 mm N/A 413683 N/A 113000 lb·in12800 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146163 N/A 14.75 in375 mm N/A 413585 N/A 216000 lb·in24400 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146210 N/A 14.75 in375 mm N/A 415080 N/A 339000 lb·in38400 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146148 N/A 10.00 in254 mm N/A 413113 N/A 29300 lb·in3310 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146152 N/A 10.00 in254 mm N/A 413248 N/A 52600 lb·in5940 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146145 N/A 12.12 in308 mm N/A 413534 N/A 69800 lb·in7890 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146151 N/A 12.12 in308 mm N/A 413536 N/A 129300 lb·in14600 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146162 N/A 14.75 in375 mm N/A 413801 N/A 176700 lb·in20000 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
146163 N/A 14.75 in375 mm N/A 414126 N/A 336200 lb·in38000 Nm N/A Eaton-Airflex N/A Spring Applied, Air Release
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