Rexroth R902439437 RETAINER BALL

$304.30

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SKU:: R902439437
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Current Stock: 2

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Specifications

Technical Specifications

Manufacturer: Bosch Rexroth
Part Number (MNR): R902439437
Model Code: RETAINING BALL A4 180/30 + A11 190
Component Type: Central Ball Guide / Retainer Plate Spherical Bushing
Pump Frame Compatibility: A4VSO Size 180 (Series 30) & A11VO/A11VLO Size 190 Units
System Application: High-Pressure Open and Closed Circuit Axial Piston Systems
Material Composition: Through-hardened, ultra-polished bearing steel for extreme wear resistance

Product Overview

The Bosch Rexroth R902439437 is a genuine internal centering retaining ball guide engineered for high-pressure A4VSO180 (Series 30) and A11VO190 / A11VLO190 / A20VLO190 Series axial piston pumps. Positioned at the core of the rotating group, this spherical ball guide centers and provides a pivoting axis for the piston retainer plate against the cylinder block. Replacing a worn, pitted, or damaged retaining ball prevents misalignment of the piston slippers, eliminates irregular internal friction, and restores uniform stroke mechanics to protect the main pump assembly.