FIELD: motors and pumps.
SUBSTANCE: invention can be used in engines or compressors. Crankcase (3) for the motor or compressor has elongated crank chamber (31) with two end surfaces (31a), (31b) for locating the crankshaft and at least one piston cylinder cavity (32a), (32b). Piston reciprocates as a result of the rotation of the crankshaft. Crank chamber (31) has opening (33) on the first end surface (31a), through which the crankshaft is inserted therein. Inner diameter of crank chamber (31) is smoothly reduced from its first end surface (31a) to its second end surface (31b). Motor or a compressor with a crankcase and a crankcase manufacturing method are described.
EFFECT: technical result consists in simplifying the production of the crankcase in the form of a one-piece unit for easier installation and prevention of leakage.
12 cl, 5 dwg
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