摘要:
A sliding member is integrally formed of fluororesin as a whole, and a sliding surface to be slid with a slid member is made hydrophilic. A manufacturing method includes a step of exposing the sliding surface 2 of the sliding member 1 to water plasma 7 generated by Ar gas and vaporized water as raw materials and making the sliding surface 2 hydrophilic.
摘要:
There is provided a split rolling bearing which can suppress the reduction in durability and which can suppress largely the generation of noise or vibration which is caused in association with the passage of rolling elements over a mating surface. The split rolling bearing according to the invention comprises a split outer ring 2 having first and second split outer ring members 5, 6 which are formed into a cylindrical shape by being butted against each other at circumferential end portions. First flat plane portions 7 and a V-shaped recess portion 8 which is recessed in a circumferential direction are formed at one end portion 5a of the circumferential end portions which are butted against each other. Secondary flat plane portions 9 which are to be brought into abutment with the first flat plane portions 7 and a projecting portion 10 which projects in the circumferential direction from the second flat plane portion 9 so as to be introduced into the recess portion 8 are formed at an end portion 6a which is to be butted against the end portion 5a. A space S is formed between the recess portion 8 and the projecting portion 10 so as to avoid a contact between a bottom portion 8b of the recess portion 8 and a vertex portion 10b of the projecting portion 10.
摘要:
An oil pump has: a base part 1 having a working chamber 11; and a rotor 3 provided rotatably in the working chamber 11. The base part 1 is configured by a plurality of split bodies 13, 18. At least one split body 18 (rear housing) out of the plurality of split bodies 13, 18 is made of aluminum alloy, and on which an opposed sliding surface 180 made of a ceramic film 185 is formed. The ceramic film 185 of the opposed sliding surface 180 has a hardness of approximately Hv 500 to 1100 and a surface roughness of approximately 2 to 8 micrometers, and contains α - alumina and zirconia.
摘要:
In a first rolling bearing (8) of this X-ray tube apparatus (1), an ion nitriding layer is formed on a raceway surface of an inner ring (11), and an ion nitriding layer is formed on a raceway surface of an outer ring (18). As the results, surface hardness of the raceway surface of the inner ring (11) and the raceway surface of the outer ring (18) is enhanced, and abrasion resistance can be improved. On the other hand, in a second rolling bearing (10), an ion nitriding layer and a diamond-like carbon film are successively formed on a raceway surface of an inner ring (12), and an ion nitriding layer and a diamond-like carbon film are successively formed on a raceway surface of an outer ring (20). As the results, the second rolling bearing (10) which is positioned closer to the target (3) has a double hardening structure.
摘要:
A bearing apparatus includes: two split outer ring halves (3a,3b) which includes outer ring raceway surfaces and are disposed within a supporting hole (13) of the housing, respectively; and a plurality of rollers which are disposed on respective inner surfaces of the both split outer ring halves and supports a shaft. Each of the two split outer ring halves includes an oil hole (8a,8b) penetrating the split outer ring half in a radial direction thereof and an oil groove (9) formed on an outer diameter surface of the split outer ring half along a circumferential direction thereof to allow the oiling passage and the oil holes to communicate with each other. Each of the oil holes is disposed at a position located at an angle of within 45° from the joint surface of the split outer ring halves in an opposite direction to a rotating direction of the shaft.
摘要:
A coupling device comprises first and second sliding surfaces (S2, S1) being located between first and second rotary members (30a, 30b; 130a, 130b) which are rotatable relative to each other. The first and second sliding surfaces (S2, S1) friction engage with each other to transmit torque between the first and second rotary members. A thin diamond-like carbon film (D) is formed on the first sliding surface (S2).