PISTON OF AXIAL PISTON PUMP MOTOR, CYLINDER BLOCK OF AXIAL PISTON PUMP MOTOR, AND AXIAL PISTON PUMP MOTOR

Japanese Patent JP2014208982

A

PROBLEM TO BE SOLVED: To provide a piston of an axial piston pump motor, a cylinder block of an axial piston pump motor, and an axial piston pump motor capable of suppressing occurrence of seizure on the cylinder or the piston.SOLUTION: An end portion of a front edge of a piston 5 is designed to have crowning of a 1.2-degree to 2.5-degree curve at a length not less than 10% and not more than 80% of a length of a cylindrical portion 20, and at a height not less than 10% and not more than 160% of a height of a clearance. An end portion of a rear edge thereof is designed to have crowning of the 1.2-degree to 2.5-degree curve at a length not less than 10% and not more than 60% of the length of the cylindrical portion 20, and at a height not less than 10% and not more than 160% of the height of the clearance. An end portion of a front edge of the cylinder block 3 is designed to have crowning of the 1.2-degree to 2.5-degree curve at a length not less than 8% and not more than 60% of the length of the cylindrical portion 20, and at a height not less than 12% and not more than 125% of the height of the clearance.

YOSHIMURA ISAMU
NOMURA RYO
WADA TOSHIO
SAKAI RYUJI

JP2013085826A

November 06, 2014

April 16, 2013

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KAWASAKI HEAVY IND LTD

F04B1/22; F03C1/253; F04B53/14; F04B53/16

JP2001032767A	2001-02-06
JP2000506585A	2000-05-30
JPH10266970A	1998-10-06
JPH09177670A	1997-07-11
JP2004239077A	2004-08-26
JP4828371B2	2011-11-30

Yamada Takuji
Mitsuo Tanaka
Masashi Shiotani

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