Rexroth R910902778 CRADLE BEARING

Technical Specifications

• Manufacturer: Bosch Rexroth
• Part Number (MNR): R910902778
• Model Code: BEARING SHELL A10V 28
• Design Series Compatibility: Series 31 Design
• Component Type: Cradle Saddle Bearing / Plain Sliding Shell
• Pump Type Compatibility: A10VO28 Piston Units

Product Overview

The Bosch Rexroth R910902778 is a genuine internal cradle bearing shell engineered explicitly for A10VO28 Series 31 variable displacement axial piston pumps. Operating as a heavy-duty sliding journal liner, this critical component provides structural support and guidance between the internal pump housing and the pivoting swashplate assembly. It forms a low-friction protective oil film that absorbs massive radial and axial thrust loads under continuous medium-pressure cycles. By mitigating metal-on-metal galling and operational vibrations, it ensures smooth, immediate variable flow adjustments. Replacing a worn bearing shell restores precise hydraulic control, optimizes machine response time, and prevents sudden catastrophic pump failures.