Electric motor for driving a piston pump and method of assembly

Details Electric motor for driving a piston pump and method of assembly Electric motor for driving a piston pump and method of assembly

1997-06-27

1998-12-29

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310 91, 310 71, 310 80, 417423, H02K 500

Patent

active

058545220

ABSTRACT:
An electric motor for driving a piston pump assembled thereto is disclosed wherein a load from the piston pump acts radially on an armature shaft of the electric motor. The electric motor is assembled such that the outer ring of a yoke bearing is connected to a yoke, and the outer ring of a first pump housing bearing is press fit to a pump housing. One end of the armature shaft is press fit to the yoke bearing inner ring, and the other end of the armature shaft is press fit to the first pump housing bearing inner ring. Thus, wobbling of the armature shaft in the axial and radial directions is minimized or eliminated.

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