CN112065860B - Thin oil lubricating structure of rolling bearing - Google Patents

Thin oil lubricating structure of rolling bearing Download PDF

Info

Publication number
CN112065860B
CN112065860B CN202011012720.1A CN202011012720A CN112065860B CN 112065860 B CN112065860 B CN 112065860B CN 202011012720 A CN202011012720 A CN 202011012720A CN 112065860 B CN112065860 B CN 112065860B
Authority
CN
China
Prior art keywords
bearing
cover
oil
sealing
collar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011012720.1A
Other languages
Chinese (zh)
Other versions
CN112065860A (en
Inventor
盛志伟
王泽宇
王景明
周世杰
张贵滨
索文旭
宋雨
臧树田
王利楠
谷凤玲
李函霖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Electric Power Equipment Co Ltd
Original Assignee
Harbin Electric Power Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin Electric Power Equipment Co Ltd filed Critical Harbin Electric Power Equipment Co Ltd
Priority to CN202011012720.1A priority Critical patent/CN112065860B/en
Publication of CN112065860A publication Critical patent/CN112065860A/en
Application granted granted Critical
Publication of CN112065860B publication Critical patent/CN112065860B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing

Abstract

The invention relates to a thin oil lubrication structure of a rolling bearing, wherein two ends of an inner ring of the rolling bearing (13) are respectively clamped on an inner ring collar (14) and an outer ring collar (5) of a rotating shaft (4), the inner ring collar (14) and the outer ring collar (5) position the inner ring of the rolling bearing (13), an outer ring of the rolling bearing (13) is arranged at a bearing stop (10-2) in a bearing sleeve (10), an inner bearing cover (11) and an outer bearing cover (2) are fixed on the bearing sleeve (10) through a bearing cover fastener (8) and position the outer ring of the rolling bearing (13), two O-shaped rubber rings (7) are respectively arranged in seal grooves (10-1) at two ends of the bearing sleeve (10), and a seal cover fastener (6) is adopted to fix an inner seal cover (12) on the inner bearing cover (11). The invention has the advantages of large bearing capacity, high working rotating speed, reliable operation and the like, can integrally improve the reliability of the equipment, and effectively reduces the maintenance cost.

Description

Thin oil lubricating structure of rolling bearing
Technical Field
The invention relates to a thin oil lubricating structure of a rolling bearing.
Background
The rolling bearing for the motor or other rotating equipment has more grease lubrication structures, and the grease lubrication has the advantages of simple structure, low manufacturing difficulty, convenience in maintenance and the like. The bearing structure lubricated by grease is difficult to meet the operation condition of equipment under the conditions of poor equipment use environment, complex load bearing during operation and high working rotating speed in particular. The bearing lubricated by the grease has a simple structure, and under the environment with more dust, the dust easily enters the inside of the bearing, so that the lubrication failure is easily caused, and the mechanical failure of bearing burning is easily caused. When the environmental temperature is high, the bearing has low heat dissipation due to grease lubrication, and the bearing can be burnt and damaged even if the bearing runs for a long time. Because of the large friction coefficient of grease lubrication, the heat productivity of the bearing is large during high-speed operation, and the bearing is burnt.
Disclosure of Invention
The invention aims to provide a thin oil lubricating structure of a rolling bearing, which has a simple structure and reliable performance and is suitable for motors or other rotating equipment with poor operating environment and complex load, especially under a high-speed working condition. The technical scheme of the invention is as follows: a thin oil lubrication structure of a rolling bearing is characterized in that two ends of an inner ring of the rolling bearing (13) are respectively clamped on an inner ring collar (14) and an outer ring collar (5) of a rotating shaft (4), the inner ring collar (14) and the outer ring collar (5) position the inner ring of the rolling bearing (13), an outer ring of the rolling bearing (13) is arranged at a bearing stop (10-2) in a bearing sleeve (10), an inner bearing cover (11) and an outer bearing cover (2) are fixed on the bearing sleeve (10) through a bearing cover fastening piece (8) and position the outer ring of the rolling bearing (13), two O-shaped rubber rings (7) are respectively arranged in sealing grooves (10-1) at two ends of the bearing sleeve (10), an inner sealing cover (12) is fixed on the inner bearing cover (11) through a sealing cover fastening piece (6), an outer sealing cover (3) is fixed on the outer bearing cover (2), three sealing copper threads (15) are respectively embedded between the inner diameter of the outer sealing cover (3) and the inner sealing cover (12), the sealing copper teeth (15) are made of brass, gaps are reserved between the outer circle of the sealing copper teeth (15) and the outer shaft collar (5) and the inner shaft collar (14), and the gap value is 0.25-0.5 mm.
Two oil storage tanks (10-3) in the inner cavity of the bearing sleeve (10) are connected through communicating holes (10-4), the upper part of one oil storage tank (10-3) is connected with an oil filling hole (10-5), the lower part of the oil storage tank is connected with an oil discharging hole (10-6), a breather (9) is assembled with the oil filling hole (10-5), and an oil discharging plug (1) is arranged in the oil discharging hole (10-6).
The excircle of the outer oil ring (5) is provided with a right-handed thread (5-1), and the excircle of the inner oil ring (14) is provided with a left-handed thread (14-1).
The working principle of the invention is as follows:
when a motor or other rotating equipment runs, the rolling bearing runs reliably and stably under the lubrication of the liquid lubricating oil stored in the sealed bearing cavity. Before a motor or other rotating equipment runs, an oil drain hole (10-6) is blocked by using an oil drain plug (1), a proper amount of lubricating oil is added into a bearing cavity through the oil drain hole, when the bearing is in normal operation, a breather (9) is arranged on the oil drain hole (10-5) and used for keeping the pressure in the bearing cavity consistent with the environment, two oil storage tanks (10-3) are arranged on a bearing sleeve (10) for facilitating oil storage, the oil storage tanks (10-3) are positioned at two ends of a bearing block (10-2) and communicated through a communication hole (10-4), and the oil level in the two oil storage tanks (10-3) is ensured to be consistent.
In order to improve the sealing performance between the bearing outer cover (2) and the bearing inner cover (11) and the rest bearing sleeve (10), two sealing grooves (10-1) are respectively arranged on two end faces of the bearing sleeve (10), and an O-shaped rubber ring (7) is arranged in each sealing groove (10-1) during assembly and used for sealing the bearing inner cover (11), the bearing outer cover (2) and the bearing sleeve (10). When the rotating shaft (4) works, air flows towards the inside of the bearing are generated between the right-handed thread (5-1) and the inner circle of the bearing outer cover (2) and between the left-handed thread (14-1) and the inner circle of the bearing inner cover (11), and lubricating oil in a bearing cavity can be prevented from leaking.
In order to improve the sealing performance between the rotating component and the static component, taking the rotating direction (viewed from the outer side of the bearing to the inner side) of the rotating shaft (4) as an example of anticlockwise direction, the outer circle of the outer oil ring (5) is provided with a right-handed thread (5-1), and the outer circle of the inner oil ring (14) is provided with a left-handed thread (14-1). When the rotating shaft (4) works, air flows towards the inside of the bearing are generated between the right-handed thread (5-1) and the inner circle of the bearing outer cover (2) and between the left-handed thread (14-1) and the inner circle of the bearing inner cover (11), and lubricating oil in a bearing cavity can be prevented from leaking. In addition, an outer sealing cover (3) is installed on the outer side of the bearing outer cover (3) through a sealing cover fastening piece (6), an inner sealing cover (12) is installed on the outer side of the bearing inner cover (11) through the sealing cover fastening piece (6), three sealing copper teeth (15) are installed on the inner circles of the outer sealing cover (3) and the inner sealing cover (12), gaps among the sealing copper teeth (15), the outer shaft ring (5) and the inner shaft ring (14) are small, an airtight effect can be generated when the rotating shaft (4) works, and sealing performance is improved.
The invention has the technical effects that:
the invention meets the requirements of reliable sealing and no leakage when a rolling bearing structure lubricated by thin oil works, ensures the safe and stable operation of motor equipment, improves the reliability of the equipment and effectively reduces the structure of maintenance cost, the rolling bearing (13) is sleeved on a rotating shaft (4), an inner shaft ring (14) and an outer shaft ring (5) are respectively arranged at two ends of the rolling bearing (13) and sleeved on the rotating shaft (4) to position an inner ring of the rolling bearing (13), an outer ring of the rolling bearing (13) is arranged at a bearing stop (10-2) in a bearing sleeve (10), and an inner bearing cover (11) and an outer bearing cover (2) are fixed on the bearing sleeve (10) through a bearing cover fastener (8) and position the outer ring of the rolling bearing (13). Two O-shaped rubber rings (7) are placed in sealing grooves (10-1) at two ends of a bearing sleeve (10) and used for sealing between a bearing outer cover (2) and a bearing inner cover (11) and the bearing sleeve (10), in order to enhance the sealing reliability, a sealing cover fastening piece (6) is used for fixing an inner sealing cover (12) on the bearing inner cover (11), an outer sealing cover (3) is fixed on the bearing outer cover (2), three sealing copper teeth (15) are respectively embedded in the inner circles of the remaining inner sealing cover (12) of the outer sealing cover (3), the sealing copper teeth (15) are made of brass, the gaps between the sealing copper teeth (15) and an outer shaft ring (5) and between the sealing copper teeth and an inner shaft ring (14) are small, an airtight effect can be generated when a rotating shaft (4) works, and the sealing performance is improved. The rolling bearing (13) can adopt various bearing structures such as a deep groove ball bearing, an angular contact ball bearing, a self-aligning ball bearing, a roller bearing and the like.
The bearing sleeve (10) is provided with two sealing grooves (10-1), a bearing stop (10-2), an oil storage groove (10-3), a communication hole (10-4), an oil filling hole (10-5) and an oil discharging hole (10-6), when the bearing sleeve works normally, a breather (9) is arranged at the oil filling hole (10-5), and an oil discharging plug (1) is arranged at the oil discharging hole (10-6) to prevent oil leakage during normal work.
By taking the rotating direction (viewed from the outer side to the inner side of the bearing) of the rotating shaft (4) as an example, the outer circle of the outer oil ring (5) is provided with a right-handed thread (5-1), the outer circle of the inner oil ring (14) is provided with a left-handed thread (14-1), and when the rotating shaft (4) works, air flows towards the inside of the bearing are generated between the right-handed thread (5-1) and the inner circle of the outer bearing cover (2) and between the left-handed thread (14-1) and the inner circle of the inner bearing cover (11), so that the lubricating oil in the bearing cavity can be prevented from leaking.
The rare lubricating rolling bearing is adopted to change the fixed mode of the traditional bearing structure, and the thin oil lubricating bearing structure has the advantages of large bearing capacity, high working rotating speed, reliable operation and the like, so that the reliability of the equipment can be integrally improved, and the maintenance cost is effectively reduced.
Drawings
FIG. 1A thin oil lubrication structure of a rolling bearing according to the present invention
FIG. 2A bearing sleeve used in the present invention
FIG. 3 is a view showing the construction of an inner race for a bearing according to the present invention
FIG. 4 is a view showing the construction of an outer race for a bearing according to the present invention
Detailed Description
Fig. 1 shows a thin oil lubrication structure of a rolling bearing, which comprises a bearing sleeve 10, an oil drain plug 1, a bearing outer cover 2, an outer sealing cover 3, a rotating shaft 4, an outer shaft ring 5, a sealing cover fastener 6, an O-shaped rubber ring 7, a bearing cover fastener 8, a breather 9, a bearing inner cover 11, an inner sealing cover 12, a rolling bearing 13, an inner shaft ring 14 and sealing copper teeth 15.
Two ends of an inner ring of a rolling bearing 13 are respectively clamped on an inner shaft ring 14 and an outer shaft ring 5 of a rotating shaft 4, the inner shaft ring 14 and the outer shaft ring 5 position the inner ring of the rolling bearing 13, the outer ring of the rolling bearing 13 is arranged at a bearing stop 10-2 in a bearing sleeve 10, an inner bearing cover 11 and an outer bearing cover 2 are fixed on the bearing sleeve 10 through a bearing cover fastener 8 and position an outer ring of the rolling bearing 13, two O-shaped rubber rings 7 are respectively arranged in sealing grooves 10-1 at two ends of the bearing sleeve 10, an inner sealing cover 12 is fixed on a bearing inner cover 11 by adopting a sealing cover fastener 6, an outer sealing cover 3 is fixed on a bearing outer cover 2, three sealing copper teeth 15 are respectively embedded between the outer sealing cover 3 and the inner diameter of the inner sealing cover 12, the sealing copper teeth 15 are made of brass, gaps are formed between the excircle of the sealing copper teeth 15 and an outer collar 5 and an inner collar 14, and the gap value is 0.25-0.5 mm.
As shown in figure 2, two oil storage tanks 10-3 in the inner cavity of the bearing sleeve 10 are connected through a communication hole 10-4, the upper part of one oil storage tank 10-3 is connected with an oil filling hole 10-5, the lower part of the oil storage tank is connected with an oil discharge hole 10-6, a breather 9 is matched and assembled with the oil filling hole 10-5, and a drain plug 1 is arranged in the oil discharge hole 10-6.
As shown in FIGS. 3 and 4, the outer ring 5 has a right-hand thread 5-1 on the outer circumference thereof, and the inner ring 14 has a left-hand thread 14-1 on the outer circumference thereof.
The rolling bearing 13 may be of various bearing structures such as a deep groove ball bearing, an angular contact ball bearing, a self-aligning ball bearing, and a roller bearing.

Claims (1)

1. Antifriction bearing thin oil lubrication structure, characterized by: two ends of an inner ring of a rolling bearing (13) are respectively clamped on an inner ring collar (14) and an outer ring collar (5) of a rotating shaft (4), the inner ring collar (14) and the outer ring collar (5) position the inner ring of the rolling bearing (13), an outer ring of the rolling bearing (13) is arranged at a bearing stop (10-2) in a bearing sleeve (10), an inner bearing cover (11) and an outer bearing cover (2) are fixed on the bearing sleeve (10) through a bearing cover fastener (8) and position the outer ring of the rolling bearing (13), two O-shaped rubber rings (7) are respectively arranged in sealing grooves (10-1) at two ends of the bearing sleeve (10), an inner sealing cover (12) is fixed on the inner bearing cover (11) through a sealing cover fastener (6), an outer sealing cover (3) is fixed on the outer bearing cover (2), three sealing copper teeth (15) are respectively embedded between the inner sealing cover (3) and the inner diameter of the inner sealing cover (12), the sealing copper teeth (15) are made of brass, gaps are reserved between the outer circle of the sealing copper teeth (15) and the outer shaft collar (5) and the inner shaft collar (14), and the gap value is 0.25-0.5 mm; two oil storage tanks (10-3) in the inner cavity of the bearing sleeve (10) are connected through a communication hole (10-4), the upper part of one oil storage tank (10-3) is connected with an oil filling hole (10-5), the lower part of the oil storage tank is connected with an oil discharging hole (10-6), a breather (9) is assembled with the oil filling hole (10-5), and an oil discharging plug (1) is arranged in the oil discharging hole (10-6); the excircle of the outer collar (5) is provided with a right-handed thread (5-1), and the excircle of the inner collar (14) is provided with a left-handed thread (14-1).
CN202011012720.1A 2020-09-24 2020-09-24 Thin oil lubricating structure of rolling bearing Active CN112065860B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011012720.1A CN112065860B (en) 2020-09-24 2020-09-24 Thin oil lubricating structure of rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011012720.1A CN112065860B (en) 2020-09-24 2020-09-24 Thin oil lubricating structure of rolling bearing

Publications (2)

Publication Number Publication Date
CN112065860A CN112065860A (en) 2020-12-11
CN112065860B true CN112065860B (en) 2022-03-15

Family

ID=73683918

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011012720.1A Active CN112065860B (en) 2020-09-24 2020-09-24 Thin oil lubricating structure of rolling bearing

Country Status (1)

Country Link
CN (1) CN112065860B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113541389B (en) * 2021-07-02 2022-08-30 哈尔滨电气动力装备有限公司 Centering-adjustable guide bearing structure with retaining ring
CN113931938A (en) * 2021-11-09 2022-01-14 山东洛轴所轴承研究院有限公司 Main shaft end cover with cooling and lubricating functions
CN114857177B (en) * 2022-04-29 2023-10-10 大连日牵电机有限公司 Air pressure balancing structure of rolling bearing for traction motor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637270A (en) * 1970-11-16 1972-01-25 Sperry Rand Corp Bearing greasing system
CA2260642A1 (en) * 1998-01-31 1999-07-31 The Torrington Company Bearing assembly with housing cap and seal
CN2797741Y (en) * 2005-04-28 2006-07-19 上海凯泉泵业（集团）有限公司 Improved bearing parts
CN101924412A (en) * 2010-05-17 2010-12-22 无锡市中达电机有限公司 Thin oil-lubricated bearing device for horizontal motor
CN201763667U (en) * 2010-08-03 2011-03-16 上海凯泉泵业（集团）有限公司 Sliding bearing body structure of heavy-caliber double suction pump for chemical circulation
CN107878663A (en) * 2016-09-30 2018-04-06 株式会社岛野 Bicycle use electro-motor support structure and the Bicycle drive unit for including it
CN208919106U (en) * 2018-07-05 2019-05-31 无锡东元电机有限公司 A kind of rolling bearing optimization device
CN110939659A (en) * 2019-11-26 2020-03-31 西安航天动力研究所 Structure capable of accurately measuring axial force of turbine without compressing outer ring of bearing
CN210830195U (en) * 2019-09-06 2020-06-23 南京中船绿洲机器有限公司 Sealing structure for bearing seat of high-speed horizontal screw machine
CN210919839U (en) * 2019-10-14 2020-07-03 沈阳俊生机械制造有限公司 Bearing body sealing copper ring of centrifugal machine gearbox

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE461803B (en) * 1989-03-17 1990-03-26 Skf Mekanprodukter Ab DEVICE FOR THE ASSEMBLY OF A BEARING ON AN AXLE
SE524030C2 (en) * 2002-08-30 2004-06-15 Skf Ab Bearing housing and sealing unit in such a bearing housing
US6971802B2 (en) * 2003-12-23 2005-12-06 Vezina Martin J Bearing preload cage assembly
CN201739357U (en) * 2010-04-26 2011-02-09 天津三岛输送机械有限公司 Composite sealed bearing seat
CN203257902U (en) * 2013-05-09 2013-10-30 上海电气集团上海电机厂有限公司 Ceramic ball bearing structure of super-speed permanent magnet motor
CN107612193A (en) * 2017-10-24 2018-01-19 中车永济电机有限公司 Motor big flow thin oil lubricant sealed bearing housing structure

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637270A (en) * 1970-11-16 1972-01-25 Sperry Rand Corp Bearing greasing system
CA2260642A1 (en) * 1998-01-31 1999-07-31 The Torrington Company Bearing assembly with housing cap and seal
CN2797741Y (en) * 2005-04-28 2006-07-19 上海凯泉泵业（集团）有限公司 Improved bearing parts
CN101924412A (en) * 2010-05-17 2010-12-22 无锡市中达电机有限公司 Thin oil-lubricated bearing device for horizontal motor
CN201763667U (en) * 2010-08-03 2011-03-16 上海凯泉泵业（集团）有限公司 Sliding bearing body structure of heavy-caliber double suction pump for chemical circulation
CN107878663A (en) * 2016-09-30 2018-04-06 株式会社岛野 Bicycle use electro-motor support structure and the Bicycle drive unit for including it
CN208919106U (en) * 2018-07-05 2019-05-31 无锡东元电机有限公司 A kind of rolling bearing optimization device
CN210830195U (en) * 2019-09-06 2020-06-23 南京中船绿洲机器有限公司 Sealing structure for bearing seat of high-speed horizontal screw machine
CN210919839U (en) * 2019-10-14 2020-07-03 沈阳俊生机械制造有限公司 Bearing body sealing copper ring of centrifugal machine gearbox
CN110939659A (en) * 2019-11-26 2020-03-31 西安航天动力研究所 Structure capable of accurately measuring axial force of turbine without compressing outer ring of bearing

Also Published As

Publication number Publication date
CN112065860A (en) 2020-12-11

Similar Documents

Publication Publication Date Title
CN112065860B (en) Thin oil lubricating structure of rolling bearing
US5498006A (en) Pinned unitary bearing seal
CN109139708B (en) Bearing lubricating structure and explosion-proof motor
CN101178095A (en) Solid-liquid composite lubricating shafting for spacing flywheel
CN201539502U (en) Bearing device
CN110518736B (en) Lubricating and sealing structure for traction motor oil
CN109149111B (en) Direct-drive radar rotary table
CN102537115B (en) Pull type clutch release bearing capable of injecting grease for lubricating
CN108258835A (en) Heavily loaded Self-aligning flame-proof type thin oil lubricant rolling bearing structure
CN112389486A (en) Lubricating and sealing structure of wheel shaft driving system
CN209299038U (en) The motor of oil-leakage-prevention temperature rise
CN103438196A (en) Non-contact seal assembly for gear box
CN203488683U (en) Non-contact type sealing assembly for gear case
CN210510283U (en) Reducer output shaft sealing device of shield construction electric locomotive
JP2012007686A (en) Rolling bearing device
JP2007146869A (en) Rolling bearing and bearing device
CN208764144U (en) Deep groove ball bearing with oil-bearing structure
CN210724423U (en) Sealing device for preventing oil leakage of motor bearing chamber
CN211059055U (en) Bearing structure
CN206845524U (en) A kind of deep well pump special angular contact ball bearing
CN101769310A (en) Cylinder roller bearing full of rollers and having two edges provided with dustproof check rings
CN218472918U (en) Motor bearing mounting structure
CN106763780B (en) A kind of grease-proof and waterproof shield bearing protector
CN113803377A (en) Cross shaft structure of universal joint
CN208831682U (en) A kind of anti-oil leakage device of scooter retarder

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant