35VQTBS21A 2203AA20R

The 35VQTBS21A 2203AA20R is manufactured by Vickers and belongs to the VQ Thru-Drive Vane Pumps series. It supplies hydraulic flow for automated machinery and allows additional pumps to be driven from its shaft. The unit is a vane design, a configuration chosen for steady flow with low pulsation. A rotating group capacity of 21 US gpm delivers moderate volume for medium-size circuits. Right-hand rotation when viewed from the shaft end matches common prime mover direction. The inlet and outlet connections both use SAE 4-bolt flanges so hoses can be rigidly clamped for high pressure. Installation is simplified by an SAE J744 body mounting flange, and the adapter sits at 45° clockwise relative to the pump flange to accommodate angled port routing.

The adapter end ports are positioned opposite the inlet port, allowing separate lines for downstream accessories and minimizing hose crossings in tight enclosures. An SAE splined tandem coupling is included so a second pump can be driven without additional alignment hardware or spacer shafts. Thru-drive capability permits power to pass through the primary shaft, and the feature is supported by a two-bolt SAE B flange on the thru-drive mount; this arrangement leaves the main flow path uninterrupted while feeding torque to auxiliary units. These provisions let designers stack pumps in series while maintaining common drive power, a typical requirement in presses, die-casting machines, or mobile work functions. Together, the port placement, coupling style, and thru-drive hardware provide the integration margin needed when expanding hydraulic automation systems.