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1. (WO2018155320) CONICAL ROLLER BEARING
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Pub. No.: WO/2018/155320 International Application No.: PCT/JP2018/005397
Publication Date: 30.08.2018 International Filing Date: 16.02.2018
IPC:
F16C 33/58 (2006.01) ,F16C 19/36 (2006.01) ,F16C 33/36 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
33
Parts of bearings; Special methods for making bearings or parts thereof
30
Parts of ball or roller bearings
58
Raceways; Race rings
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
19
Bearings with rolling contact, for exclusively rotary movement
22
with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
34
for both radial and axial load
36
with a single row of rollers
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
33
Parts of bearings; Special methods for making bearings or parts thereof
30
Parts of ball or roller bearings
34
Rollers; Needles
36
with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
Applicants:
NTN株式会社 NTN CORPORATION [JP/JP]; 大阪府大阪市西区京町堀1丁目3番17号 3-17, Kyomachibori 1-chome, Nishi-ku, Osaka-shi, Osaka 5500003, JP
Inventors:
川井 崇 KAWAI Takashi; JP
▲高▼岡 将也 TAKAOKA Masaya; JP
Agent:
鎌田 直也 KAMADA Naoya; JP
鎌田 文二 KAMADA Bunji; JP
中谷 弥一郎 NAKATANI Yaichiro; JP
Priority Data:
2017-02974521.02.2017JP
Title (EN) CONICAL ROLLER BEARING
(FR) ROULEMENT À ROULEAUX CONIQUE
(JA) 円すいころ軸受
Abstract:
(EN) A conical roller bearing for which the arithmetic mean roughness Ra of a large-flange surface (12) of an inner ring (10) is 0.1 μm ≤ Ra ≤ 0.2 μm, the arithmetic mean roughness Ra of a roller large-end surface (33) is 0.1 μm or less, the skewness Rsk of a roughness curve of the large-flange surface (12) is −1.0 ≤ Rsk ≤ −3.0, the kurtosis Rku of the roughness curve of the large-flange surface (12) is 3.0 ≤ Rku ≤ 5.0, and the large-flange surface (12) is defined by a straight-line generatrix or a generatrix for which a middle concavity or a middle convexity is 1 μm or less.
(FR) L'invention concerne un roulement à rouleaux conique selon lequel la rugosité moyenne arithmétique Ra d'une surface à larges bords (12) d'un anneau interne (10) est de 0,1 μm ≤ Ra ≤ 0,2 μm, la rugosité moyenne arithmétique Ra d'une grande surface d'extrémité de rouleau (33) est inférieure ou égale à 0,1 μm, l'asymétrie Rsk d'une courbe de rugosité de la surface à larges bords (12) est de −1,0 ≤ Rsk ≤ −3,0, l'aplatissement Rku de la courbe de rugosité de la surface à larges bords (12) est de 3,0 ≤ Rku ≤ 5,0, et la surface à larges bords (12) est délimitée par une génératrice en ligne droite ou une génératrice pour laquelle une concavité centrale ou une convexité centrale est inférieure ou égale à 1 µm.
(JA) 内輪(10)の大鍔面(12)の算術平均粗さRaは0.1μm≦Ra≦0.2μmであり、ころ大端面(33)の算術平均粗さRaは0.1μm以下であり、大鍔面(12)の粗さ曲線のスキューネスRskは-1.0≦Rsk≦-0.3であり、大鍔面(12)の粗さ曲線のクルトシスRkuは3.0≦Rku≦5.0であり、大鍔面(12)は、直線の母線、又は中凹若しくは中凸が1μm以内の母線で規定される円すいころ軸受である。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)