Short Description
Premium factory-direct aftermarket Sauer Danfoss / Sundstrand 90 Series PV90R Axial Piston Pump Spare Parts and Rebuild Kits, precision-engineered as 100% precision drop-in replacements to restore original volumetric displacement and high-pressure closed-loop efficiency. Covering all dominant global displacements including 90R055, 90R075, 90R090, 90R100, 90R130, and 90R180, our massive inventory features upgraded heavy-duty bimetal cylinder blocks and hardened piston groups designed to survive severe high-speed pressure reversals up to 420 bar in concrete transit mixers and road paving machinery.
Key Highlights
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100% Seamless Interchangeable Clearences: Fully reverse-engineered strictly to original Sauer-Danfoss 90 series micro-metric blueprints. Internal rotating groups fit perfectly into existing OEM pump housings with zero dimensional mismatch, play, or casing modification.
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Upgraded Bimetal Cylinder Barrels: Our PV90R cylinder blocks utilize advanced high-density copper-cladding fusion techniques. This robust bimetallic layer drastically extends boundary lubrication performance, lowers friction wear, and combats high thermal oil shocks.
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Induction-Hardened Pistons & Heavy Shoes: Piston assemblies are forged from premium structural alloy steel and induction hardened to 60-62 HRC. Friction slipper shoes are micro-lapped to absolute optical flatness, mitigating the high risk of shoe detachment during aggressive equipment travel operations.
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One-Stop Full Closed-Loop Inventory: Wholesale readiness for all critical internal components ready for rapid worldwide shipping, including Cylinder Blocks, Piston Shoes with Retainers, Valve Plates, Ball Guides, Drive Shafts (Splined), Swash Plate Assemblies, Slide Bearings, Charge Pumps (Gerotor), Multi-function Valves, and complete high-temperature Viton (FKM) Overhaul Seal Kits.
| Compatible Sauer Pump Sizes | Available Internal Spare Parts & Components | Core Application & Equipment Scope |
|---|---|---|
| 90R042 / 90R055 / 90R075 | Cylinder Block (Barrel), Piston Shoes with Retainer Plate, Valve Plate, Ball Guide, Drive Shaft (Splined), Swash Plate Assembly, Cradle Bearings, Auxiliary Charge Pump (Gerotor), Multi-function High-Pressure Valves, Complete Viton (FKM) Reseal Kits. | Rated Working Pressure: 420 bar Closed-Loop Systems. Dominant power source for Concrete Transit Mixers (6m³ – 14m³), Asphalt Pavers, Heavy Vibratory Road Rollers, Harvesters, and Underground Mining Loaders. |
| 90R090 / 90R100 / 90R130 | ||
| 90R180 / 90R250 |
FAQ
Q1: Since the Sauer 90R is a high-pressure closed-loop pump, do you also supply the auxiliary charge pump and multi-function valves? A: Yes, absolutely. We keep a massive stock of integrated charge pumps (gerotor assemblies) and high-pressure multi-function relief valves for the entire 90R series. Because charge circuit pressure drops or valve leakage are the primary reasons behind main rotary group scoring, we heavily recommend replacing these auxiliary components during a complete workshop overhaul.
Q2: Road machinery operates under intense dusty and high-temperature environments. How do your 90R repair kits handle severe heat? A: Our 90R rebuild components are explicitly treated for thermal shock resistance. Cylinder block faces undergo specialized bimetallic sintering, and our entire sealing profile is upgraded to premium high-temperature Viton (FKM) as standard. This guarantees full volumetric efficiency and zero dynamic case leaking even when operating continuously under hot asphalt and road-building conditions.
