Rexroth R902205451 RETAINER PLATE 31/32 DESIGN

Key Specifications

• Manufacturer: Bosch Rexroth
• Part / Material Number: R902205451
• Model Designation: RETAINING PLATE 'R' ASIA 21517.2121
• Equipment Compatibility: Rexroth A4VG56 Series Axial Piston Pumps
• Design Index / Series: Series 31 and Series 32
• Component Type: Piston Slipper Retainer Plate / Set Plate

Product Overview

The Bosch Rexroth R902205451 Retainer Plate (RETAINING PLATE 'R' ASIA 21517.2121) is a genuine, factory-original OEM component designed to anchor and guide the piston slippers within the internal rotating group of Rexroth A4VG56 axial piston variable pumps. Engineered specifically for units operating within the 31 and 32 design series, this high-tensile steel plate holds the piston shoes perfectly flush against the swashplate face to eliminate slipper lift-off, tracking errors, and erratic chatter during high-speed rotation. Replacing a worn plate with this authentic precision-machined component ensures stable mechanical kinematics, maintains optimal oil-film distribution across all sliding surfaces, and prevents catastrophic metal-on-metal friction failure inside heavy-duty industrial and mobile hydraulic systems.