Rolling bearing
A rolling bearing and bearing technology, applied in the direction of bearing components, shafts and bearings, base materials, etc., can solve problems such as harsh use conditions, and achieve the effects of preventing melting, excellent quietness, and excellent high temperature and high speed durability.
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Embodiment 1～ Embodiment 7
[0088] 0.5 g of the polyol compound shown in Table 1 was added to 99.5 g of the solvent shown in Table 1 to adjust the treatment liquid. The 6204 bearing (bearing size: inner diameter: 20mm, outer diameter: 47mm, width: 14mm, material: SUJ2) was immersed in the treatment solution and rotated for 4 hours to form an iron oxide film on the entire surface of the metal bearing member of the rolling bearing . 0.7 g of grease (Malten Pu SRL manufactured by Kyoyo Oil Co., Ltd.) was sealed in this bearing to obtain a rolling bearing test piece. The following high-temperature durability test was performed on the obtained rolling bearing test piece, and the bearing life time was measured. The results are also recorded in Table 1.
[0089]
[0090] The rolling bearing test piece is rotated at a speed of 10,000 rpm at a temperature of 150°C, a radial load of 67N and an axial load of 67N at the outer diameter of the bearing outer ring, and the time until melting is taken as the bearing life ...
Embodiment 8～ Embodiment 10
[0092] 0.5 g of the polyol compound shown in Table 1 was added to 99.5 g of the solvent shown in Table 1 to adjust the treatment liquid. A 6204 bearing (bearing size: inner diameter: 20 mm, outer diameter: 47 mm, and width: 14 mm) cage (material: SPCC) was immersed in the treatment solution for 4 hours to form an iron oxide film on the surface of the cage. A bearing was produced using this cage, and 0.7 g of grease (Malten Pu SRL manufactured by Kyoyo Oil Co., Ltd.) was sealed to obtain a rolling bearing test piece. The above-mentioned high temperature durability test was performed on the obtained rolling bearing test piece, and the bearing life time was measured. The results are also recorded in Table 1.
Embodiment 11
[0099] In the treatment solution of Example 3 (containing chlorogenic acid), a ring-shaped substrate made of SUJ2 having a size of 40 mm in outer diameter × 20 mm in inner diameter × t10 mm (second curvature R60 mm) was immersed in the state and rotated for 4 hours , An iron oxide film was formed on the entire surface of the substrate to obtain a ring-shaped test piece. The obtained ring-shaped test piece was subjected to the sliding test shown below, and the specific wear amount and the friction coefficient at the end of the test were each measured three times. The results are shown in Table 2 and Figure 7 . The specific wear amount in Table 2 is the average value of the specific wear amount measured three times. Figure 7 The middle histogram is the individual data of the specific wear amount measured three times, and the circles indicate the friction coefficient at the end of each measurement.
[0100]
[0101] Use as Image 6 Sliding test machine shown. Image 6 (a), Ima...
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Abstract
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