| 摘要 |
A fluid pressure unit with a cylinder block is provided with radial bores of rectangular cross section. Pistons are disposed in the bores, each of the pistons being provided with a piston cap which is subjected periodically to pressure of a medium and with a roller resting against the piston cap. A cam is provided around the cylinder block, upon which the respective rollers rest. Each roller defines a variable throttle space with a first side wall of a respective one of the radial bores, which wall is vertical with respect to the rotational direction. The piston cap forms a sealing point with at least a second of two side walls.
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