Hydraulic Pump Parts Charge pump 90R100 17cc/20cc/26cc

This charge pump is a core spare part engineered for the Sauer Danfoss 90R100 series hydraulic piston pump, a key component in closed-circuit hydrostatic drive systems. It comes in three displacement options—17cc, 20cc, and 26cc—to match diverse flow and pressure requirements across different operating conditions.

Crafted from high-grade alloy steel with precision machining, this charge pump delivers exceptional durability and wear resistance. Its robust gear structure and sealed design ensure stable performance even under heavy loads, high pressure, and extreme temperature environments, minimizing downtime for machinery.

As a critical auxiliary unit, it primarily supplements internal leakage of the main pump, maintains positive pressure in the main circuit, and supplies cooling and filtering flow for the hydraulic system. Additionally, it provides control pressure to operate the swash plate, enabling smooth adjustment of the main pump’s displacement.

Designed for direct replacement, it features a perfect fit with the 90R100 pump housing, requiring no modifications during installation. The standard spline shaft and mounting pad (SAE-C, 14 teeth) ensure easy coupling and compatibility with original equipment specifications.

Each unit undergoes strict factory testing for pressure, flow, and leakage to meet OEM quality standards. Widely applied in concrete mixers, excavators, loaders, and other construction machinery, it offers reliable performance and cost-effective maintenance for 90R100 hydraulic pump systems.