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VICKERS ROD BIAS

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Description & Features

The Eaton Vickers rod bias piston pump accessory is available in all configurations and sizes.

The Vickers rod bias is a quality hydraulic piston pump accessory.

SKU: 526685

Supplier Part Number (MPN): 526685

Specifications

Brand Vickers by Danfoss	Product Type Bias Rod	Suitable For Use With Model PVH57/63 Piston Pumps

Product Questions & Answers (1)

Question by: Tony Y on Mar 13, 2026, 9:17 PM

what exactly is the "rod bias" part doing inside one of these Vickers piston pumps? never had to replace one before and just want to make sure i'm ordering the right thing

Answer by: Customer Support on Mar 15, 2026, 10:43 AM

The bias piston works against the main control piston to keep the pump's swashplate pushed toward a default position, usually full stroke or zero stroke depending on the system setup. Without it holding that spring load, the pump can't regulate displacement the way it's supposed to. It's a wear and pressure item, so needing a replacement after extended service hours is pretty common on Vickers units.