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Brake Products  »  Combination Brakes (Service and Park)
 
 

HDBC4225
Hydraulic
Combination Brakes (Service and Park)
 
 
 
HDBC4225 Series Data Sheet
Industrial Brake & Friction Selection Guide
Brake Product Application Questionnaire
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Description
 
The Carlisle HDBC4225 series brake is a combination, service and park, triple opposed piston, caliper disc brake designed for dynamic and static applications. One set of opposed pistons is a spring applied, hydraulically released (SAHR) park brake while the other two sets of opposed pistons are a hydraulically actuated service brake. The service brake includes retracting springs and automatic adjusters. Both the caliper and disc require fixed mountings. This brake provides a high torque range for heavy-duty service conditions. Multiple calipers may be used on a single disc to proportionately increase torque output. Also available as a service brake only without the SAHR park brake.
 

Application
 
  • <p>Electric drive rigid haul trucks, mobile construction and mining equipment.</p>
 

Formulas
 

English Units* Service Brake Torque (lbf-in) = K x P 

Disc Friction Radius (in) Disc Friction Radius (in) = Disc Diameter (in) ÷ 2 - 2.0 (in)

K (Dynamic) = 8.48 P = Input Pressure - 100 (psi)

Park Brake Torque (lbf-in) = Tangential Force (lbf) x Disc Friction Radius (in)

Disc Friction Radius (in) = Disc Diameter (in) ÷ 2 - 2.0 (in)

Tangential Force (lbf) = 6,850 or 8,750 lbf
 
 
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