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1. (WO2019065750) TAPERED ROLLER BEARING
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Pub. No.: WO/2019/065750 International Application No.: PCT/JP2018/035724
Publication Date: 04.04.2019 International Filing Date: 26.09.2018
IPC:
F16C 33/36 (2006.01) ,F16C 19/36 (2006.01) ,F16C 33/58 (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
34
Rollers; Needles
36
with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
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
58
Raceways; Race rings
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:
藤掛 泰人 FUJIKAKE, Yasuhito; JP
松下 知樹 MATSUSHITA, Tomoki; JP
川井 崇 KAWAI, Takashi; JP
磯部 希 ISOBE, Nozomi; JP
宮入 進 MIYAIRI, Susumu; JP
松淵 博基 MATSUBUCHI, Hiroki; JP
Agent:
特許業務法人深見特許事務所 FUKAMI PATENT OFFICE, P.C.; 大阪府大阪市北区中之島三丁目2番4号 中之島フェスティバルタワー・ウエスト Nakanoshima Festival Tower West, 2-4, Nakanoshima 3-chome, Kita-ku, Osaka-shi, Osaka 5300005, JP
Priority Data:
2017-18870028.09.2017JP
2017-18870128.09.2017JP
2017-18870228.09.2017JP
2018-17408918.09.2018JP
2018-17409018.09.2018JP
2018-17409118.09.2018JP
Title (EN) TAPERED ROLLER BEARING
(FR) ROULEMENT À ROULEAUX CONIQUES
(JA) 円錐ころ軸受
Abstract:
(EN) Provided is a tapered roller bearing that is excellent in seizure resistance and has long life and high durability. On a large end face (16) of a tapered roller (12) of the tapered roller bearing, the difference between the maximum value and the minimum value of the arithmetic mean roughness Ra of the circumferential surface region in contact with a large flange surface (18) is 0.02 μm Ra or less. When a set curvature radius of the large end face (16) of the tapered roller (12) is denoted by R, and the distance from a point which is the apex of the cone angle of the tapered roller (12) to the large flange surface (18) of an inner ring (13) is denoted by RBASE, the value of the ratio R/RBASE of the set curvature radius R and the distance RBASE is 0.75-0.87. When the actual curvature radius of the large end face (16) of the tapered roller (12) after grinding is denoted by Rprocess, the ratio Rprocess/R of the actual curvature radius Rprocess and the set curvature radius R is 0.5 or more.
(FR) L'invention concerne un roulement à rouleaux coniques présentant une excellente résistance de grippage et une longue durée de vie et une haute durabilité. Sur une grande face d'extrémité (16) d'un rouleau conique (12) du roulement à rouleaux coniques, la différence entre la valeur maximale et la valeur minimale de la rugosité moyenne arithmétique Ra de la région de surface circonférentielle en contact avec une grande surface de rebord (18) est égale ou inférieure à 0,02 µm Ra. Lorsqu'un rayon de courbure défini de la grande face d'extrémité (16) du rouleau conique (12) est désigné par R, et la distance d'un point représentant le sommet de l'angle de cône du rouleau conique (12) à la grande surface de rebord (18) d'un anneau interne (13) est désignée par RBASE, la valeur du rapport R/RBASE du rayon de courbure défini R à la distance RBASE est comprise entre 0,75 et 0,87. Lorsque le rayon de courbure réel de la grande face d'extrémité (16) du rouleau conique (12) après le meulage est désigné par Rprocess, le rapport Rprocess/R du rayon de courbure réel Rprocess au rayon de courbure défini R est supérieur ou égal à 0,5.
(JA) 耐焼付き性に優れるとともに、長寿命かつ高い耐久性を有する円錐ころ軸受を提供する。円錐ころ軸受の円錐ころ(12)の大端面(16)において、大鍔面(18)と接触する円周状の表面領域の算術平均粗さRaの最大値と最小値との差は0.02μmRa以下である。円錐ころ(12)の大端面(16)の設定曲率半径をR、円錐ころ(12)の円錐角の頂点である点から内輪(13)の大鍔面(18)までの距離をRBASEとしたとき、設定曲率半径Rと距離RBASEの比率R/RBASEの値を0.75以上0.87以下とする。円錐ころ(12)の大端面(16)の研削加工後の実曲率半径をRprocessとしたとき、実曲率半径Rprocessと設定曲率半径Rとの比率Rprocess/Rが0.5以上である。
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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)