Dynamic hydraulic gear pumps are compact ,high performance,high pressure gear pumps that are constructed of heavy strength aluminium body and cast iron end plates with displacements from .07 to .55 cu. In/rev. Used in agriculture, compactors, mobile applications etc- mounting flange is sae aa- 2 bolt standard ports are sae-8 inlet and sae-6 outlet- standard drive shaft 1/2 inch straight shaft with 1/8 key.