Air Cooled Disc Clutches and Brakes
22Pages

Airflex® DBA Description Section E 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...

Airflex® DBA Component parts Item Number Dual disc element shown Mounting Flange Clamp Tube Friction Disc Flat Head Screw Pressure Plate Spring Housing Outer Clamp Ring Inner Clamp Ring Spring Retainer Plate Inner Spring Outer Spring Reaction Plate Release Spring Wear Spacer Name Plate Self Tapping Screw Warning Decal Hose Assembly Flow Control Valve EATON Airflex® Clutches & Brakes 10M1297GP November 2012

Dimensional and Technical Data O Gear Mr@@ Minimum 0 Disc Disc Part Part Torque Releasing Releasing Friction & & Maximum Size Number Number Rating Pressure Volume Area Gear Gear Housing Speed O Gear MS© 0 Disc Disc Part Part Torque O© Releasing Friction & & Maximum Size Number Number Rating Volume Area Gear Gear Housing Speed © Torque ratings are for units with a standard complement of springs. Consult factory for torque ratings of units with non-standard spring © Maximum allowable cylinder pressure is 120 psi (8,3 bar). © Absolute volume of releasing cavity. © Minimum releasing pressure 60...

Airflex® DBB Description Section E Model DBB 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 DBB uses a conventional piston design to release the brake discs. The...

Item Number Description Item Number Description Item Number Description 1 Mounting Flange 13 Cylinder 25 Ring Gear 2_Stud_ 14_Hex Head Screw_ 26_Pipe Nipple_ 3 Friction Disc Sub-Assembly 15 Outer Seal 27 Elbow 4 Friction Disc 16 Spring 28 Pipe Cross 5 Friction Disc Core 17 Inner Seal 29 Hose Assembly 6 Rivet 18 Spacer Tube 30 Pipe Nipple 7 Washer 19 Gear 31 Flow Control Valve 8 Clamp Tube 20 Wear Spacer 32 45 Deg. Street Elbow 9 Pressure Plate 21 Reaction Plate 33 Pipe Reducer 10 Spring Housing 22 Release Spring 34 Hose Assembly 11 Flat Washer 23 Flat Washer 35 Spring Retainer 12 Locknut 24...

Airflex® DBB Brake Elements Dimensional and Technical Data Section E English Dimensions in inches SI Dimensions in millimeters Size ♦ Bore Range D 0 D1 W4 © English Dimensions in inches Size ♦ Bore Range D 0 D1 W4 0 Bolt Circles holes equally spaced as holes based on 8 equally holes equally spaced holes on shown on 22."" holes equally spaced as shown holes equally spaced as on 28.750 (730,3) Bolt Circle shown on 42.000 (1066,8) © American National Pipe Thread. © Brake in disengaged position. © All DBB brakes can be supplied plumbed as shown with a flow control valve having American National...

Airflex® DBB Brake Elements Dimensional and Technical Data © Gear M O© Minimum <D> ▲ Disc Part Part Torque releasing Releasing Friction & Maximum Size Number Number rating pressure Volume Area Gear Housing speed EATON Airflex® Clutches & Brakes 10M1297GP November 2012

Airflex® DBBS Component Parts Dual disc element shown Item Number Mounting Flange Friction Disc Clamp Tube Pressure Plate Spring Housing Flat Washer Inner Seal Outer Seal Spacer Tube Wear Spacer Reaction Plate Release Spring Spring Retainer Flat Head Screw EATON Airflex® Clutches & Brakes 10M1297GP November 2012

Airflex® DBBS Brake Elements Dimensional and Technical Data English Ib-in Multiplier psi in3 in2 lb-ft2 lb rpm Part Torque Number Rating Notes: configurations. O Basic part number only. Does not include gear. Gear must be ordered © Maximum allowable cylinder pressure is 120 psi (8,31 bar). separately with bore and keyway requirements. e Abso|ute vo|ume Qf re|easing cavjty © Dynamic torque shown. Static torque approximately 15% greater. Torque values are for new linings. Torque decreases with lining wear. At worn out condition, torque is approximately 0.66 of values shown, unless otherwise...

Airflex® Type DC Element Description Section E Type DC elements can be used as either pressure actuated clutches or brakes. They are available in single and multiple disc designs. Element construction and operation is illustrated in the figure. Pressurizing the cylinder causes the piston to clamp the friction disc assemblies between clamping plates. External springs ensure positive disengagement. Type DC elements are available in five basic disc sizes with static torque ratings to 2,061,000 lb.in (233.000 N.m). Element sizes are indicated by the number of friction discs and by the disc...

Airflex® DC Component Parts Dual disc element shown Item Number Item Number Mounting Flange Friction Disc Sub-Assembly Friction Disc Friction Disc Core Clamp Tube Pressure Plate Flat Washer Inner Seal Outer Seal Wear Spacer Reaction Plate Release Spring Flat Washer Ring Gear EATON Airflex® Clutches & Brakes 10M1297GP November 2012

Airflex® Type DC Elements Technical Data Torcjiie Maximun Rating Speed O Dynamic torque shown. Static torque 15% greater. Maximum allowable © Absolute cylinder volume with new or worn friction linings. © Based upon minimum bore. © Basic part number only. Gear not included. © Maximum diameter of "as cast" surfaces. © American National Pipe Thread © Some high torque applications of three and four disc elements require additional sup port on the cylinder side of the unit. Contact your local Airflex representative for more details. Mounting Bolt Holes Equally Spaced as Holes Based on 8 Equally...