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Hydraulics

98D Brake Series

Spring-Applied, Pressure-Released Brake, Maximum, Holding Torque 8,500-250,00 In. Lbs. (960-2,825 Nm), Release Pressure: 3,000 PSI., Maximum Speed: 3,900 RPM.

The 98D Series Brakes is a multiple disc brake, that is manufactured for two specific types of holding torque requirements. The standard “fail-safe” requirement and the “slip protection” requirement. Both types are spring loaded (normally applied) with a hydraulic pressure required for release.

Features:

  • For use with system pressure up to 3,000 psi
  • Most compact SAE “D” package available
  • Hardened & ground steel shafts
  • Wet or dry operation
  • Meets 1990 ANSI A92.2 burst pressure specification requirements

All brakes are individually tested at the factory for function, leaks and static breakaways torque. Fail-safe type brakes are tested to be assured they are in excess of 110% of the fail-safe torque rating for the unit. A failsafe brake should be used when the only requirement is a minimum static holding torque. A slip protection brake should be used where an accurate specified torque is required, such as a side load protection on a crane or overload protection in a drivetrain. These brakes are tested to be within +/- 10% of the slip protection rating for the unit.

  • Specifications
    • + expand all
    • - collapse all

    Performance Characteristics

    Maximum Release Pressure 3,000 psi -
    Maximum Continuous Pressure 3,000 psi -
    Maximum Speed at Full Release Pressure 3,900 rpm -
    Shaft Splines 30° involute, flat root side fit per ANSI B92. 1a-1976 internal - class 7, external - class 5 -
    Maximum Operating Temperature 170° F, 76° C.
    Oil Volume to Release Brake 0.5 cu. in. -
    Approximate Weight 59 lbs. 27 kg.
    Holding Torque 8,500-25,000 in. lbs. 960-2,825 Nm.

    Options

    Input Mounting - -
    SAE "C" 4-bolt -
    SAE "D" 4-bolt -
    - -
    Input Spline - -
    14T 12/24 DP Spline -
    13T 8/16 DP Spline -
    - -
    Double bearing -
    Flow-thru ports -
    Wet -

    Features and Benefits

    Spring-applied/pressure-released brake -
    For use with system pressure up to 3,000 psi -
    Most compact SAE "D" packages available -
    Hardened & ground steel shafts -
    Wet or dry operation -
    Meets 1990 ANSI A92.2 burst pressure specification requirements -

    Markets

    Industrial -
    Mobile -
    Forestry -
    Marine -

    Applications

    Mobile Straddle Crane -
    Feller Buncher -
    Material Augers -
    Demolition -
    Chippers -
    Heavy-Duty Grinders -
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