PD1425 SERIES SERVICE BRAKE

The Carlisle Brake & Friction PD1425 Series Service Brake is a hydraulically actuated, double opposed piston, caliper disc brake with retracting springs and automatic adjusters. Both the caliper and disc require fixed mountings. This brake provides high torque ranges for severe service conditions. Multiple calipers may be used on a single disc to proportionately increase torque output.

Additional Product Details

Flexible mounting alternatives to accommodate numerous equipment types
Constructed from ductile iron casting for superior brake durability
Equipped with Carlisle premium asbestos-free linings, providing superior stopping performance and life
Optional seal materials available for compatibility with all actuation fluids and temperatures

Technical Specifications

Caliper Material	High-strength ductile iron
Disc Diameter Range	19 in (482.6 mm) to 25 in (635 mm)
Disc Thickness	1 in / 25.4 mm
Displacement per Brake	2.25 in³ (36.9 cm³)
Inlet Type	.4375-20 UNF
Lining Area per Brake	102 in² / 658.06 cm²
Maximum Pressure	2000 psi / 137.9 bar
Minimum Pressure	100 psi / 6.89 bar
Mounting Attitude	6, 12 o’clock
Number of Pistons	4
Assembly Weight	137 lbs / 62.14 kg

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Company Name
Contact
Address 1
Address 2
Phone (Optional)
Email Address
Vehicle Type
Vehicle Model Number
Approximate Annual Volume
Normal Brake Usage	Service Park/ Secondary
Brake Location	Wheel Drive Shaft
Actuation	Mechanical Hydraulic SAHR
Actuation Fluid	Automotive Brake Fluid Mineral Oil Air
Gross Vehicle Weight (W gross)
Empty Vehicle Weight (W empty)
Gear Reduction (Gear red)	All gear reduction between the brake location and the vehicle ground contact.
Total Resistance (R%)	2% standard unless otherwise specified.
Maximum Brake Pressure (Pmax)	Maximum pressure available at brake input.
Number of Braked Wheels (n wheel)
Tire Rolling Radius in inches: Static (Rstatic)	Dynamic (Rdvn)
Brake Clearance in inches: Rim I.D.
Hub O.D.
Disc Dimensions in inches: O.D.
Thickness
Grade Hold Requirement (Gstatic.%)
Maximum Level Surface Speed (Vmax)
Stop Distance Requirement (Sstop)
System Actuating Time Delay (tdelay)	0% will be used unless otherwise specified.
Dynamic Grade Requirement (Gdvn.%)
Ground Coefficient (µground)	0.5 is typical ground coefficient for unmaintained loose earth.
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