CN204878343U - Short cylindrical roller bearing of full dress - Google Patents
Short cylindrical roller bearing of full dress Download PDFInfo
- Publication number
- CN204878343U CN204878343U CN201520633909.0U CN201520633909U CN204878343U CN 204878343 U CN204878343 U CN 204878343U CN 201520633909 U CN201520633909 U CN 201520633909U CN 204878343 U CN204878343 U CN 204878343U
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- bearing
- cambered surface
- ring raceway
- outer ring
- inner race
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Abstract
The utility model relates to a short cylindrical roller bearing of full dress, its short cylindrical roller completely adorns between outer ring raceway and inner circle raceway, the middle part of outer ring raceway is the straight edge line, and both sides are for gradually to incurvate first cambered surface in the bearing inner race, and the medial surface of bearing inner race's both sides flange is the inclined plane, the middle part of inner circle raceway is the straight edge line, and both sides are for gradually to incurvate second cambered surface in the bearing inner race, and bearing inner race's unilateral has a grade limit, the external diameter of bearing inner race's opposite side and the straight edge line parallel and level of inner circle raceway, and the cover has a flat ring washer on the external diameter of bearing inner race's opposite side, and the medial surface of bearing inner race's one side flange and the flat ring washer of opposite side is the inclined plane, short cylindrical roller's middle part be the straight edge line, and both sides are for gradually to lacking incurvate third cambered surface in the cylindrical roller. The advantage: vibration noise reduction, bearing capacity reinforcing, life -span reliability improve, short cylindrical roller reduces with the friction of flange by a wide margin to transportation and simple to operate, the difficult wound of colliding with that produces.
Description
Technical field
The utility model relates to field of bearings, is specifically related to one and completely fills cylindrical roller bearing.
Background technique
The feature of cylindrical roller bearing is that bearing capacity is strong, is mainly used in large and medium motor, automobile gearbox, rolling stock, machine tool chief axis, track traffic, internal-combustion engine, tractor, generator, combustion gas turbine, rolling mill, vibrating sieve and handling machinery etc.The deficiency of the cylindrical roller bearing of conventional construction is that in operation process, vibrating noise is large, and reliability of service life is low, easy early failue, and the full dress cylindrical roller bearing of conventional construction also has deficiency to be exactly transport, installation inconvenience.
To cylindrical roller bearing, domestic bearing mnanufacture producer designs substantially or by the research of simple geometrical construction to this class bearing, as Fig. 1, Fig. 3, Fig. 4, Fig. 9, shown in Figure 12, the short columnar roller 3 of this class bearing and outer ring raceway 11, inner ring raceway 21 adopts traditional straight line type, find to the dissection and analysis of a large amount of failing bearings, the outer ring raceway 11 of the cylindrical roller bearing of this structure, unusual distributed contact pressure can be produced between inner ring raceway 21 and short columnar roller 3, and it is concentrated to produce stress, the middle part of outer ring raceway 11 and inner ring raceway 21 and the middle part of short columnar roller 3 are easily formed peels off in early days, thus make bearing produce vibrating noise, weaken the bearing capacity of bearing, and shorten the reliability of service life of bearing.
In addition, as shown in Fig. 4, Fig. 9, traditional cylindrical roller bearing, the inner side surface 7 of the both sides rib 11 of its bearing outer ring 1 and the both sides rib 6 of bearing inner race 2 is all straight planes, and inner side surface 7 is that the rib 6 of straight plane easily produces larger sliding friction with the both sides end face of short columnar roller 3, like this, bearing easily generates heat on the one hand, and then affects the working life of bearing, adds the friction torque that bearing rotates on the other hand, and then add the power consumption of bearing, be unfavorable for energy-conservation.
In addition, traditional cylindrical roller bearing contains the bearing main body peace ring washer 5 of separation, such cylindrical roller bearing is separated with installation process middle (center) bearing main body peace ring washer 5 in transport, during installation, by other fixed block, the side that flat ring washer 5 abuts in bearing inner race 2 is used as rib, the deficiency that its structure exists is, first, due to being separated of bearing main body and flat ring washer 5, short columnar roller 3 and outer ring raceway 11 in transport installation process, easily bump injury is produced between inner ring raceway 21, in addition, when bearing is arranged on main frame, first bearing main body to be installed, flat ring washer 5 is installed again, the installation formality of many flat ring washers 5 together, affect efficiency.
Traditional cylindrical roller bearing, usually, is provided with the grinding wheel groove 4 facilitating wheel grinding on the side angle of the both sides of outer ring raceway 11 and on the side angle relative to flat ring washer side of inner ring raceway 21.
Model utility content
The utility model is for above-mentioned deficiency of the prior art, there is provided that a kind of vibrating noise reduces, bearing capacity strengthens, reliability of service life improves, the friction of short columnar roller and rib significantly reduces, and transports and full dress cylindrical roller bearing that is easy for installation, that not easily produce bump injury.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
One completely fills cylindrical roller bearing, comprise bearing outer ring, bearing inner race, short columnar roller, the internal surface of described bearing outer ring is provided with the outer ring raceway rolled for short columnar roller, the outer surface of described bearing inner race is provided with the inner ring raceway rolled for short columnar roller, described short columnar roller is not completely contained between outer ring raceway and inner ring raceway by retainer, the side angle of the both sides of described outer ring raceway and inner ring raceway is provided with the grinding wheel groove facilitating wheel grinding;
The middle part of described outer ring raceway is straight edge line, and both sides are gradually to the first cambered surface that bearing outer ring is recessed, and the first cambered surface of both sides is symmetrical and connect with respective grinding wheel groove, and the inner side surface of the both sides rib of described bearing outer ring is inclined-plane; The middle part of described inner ring raceway is straight edge line, both sides are gradually to the second cambered surface that bearing inner race is recessed, second cambered surface of both sides is symmetrical and connect with respective grinding wheel groove, the one-sided of described bearing inner race has a grade limit, bearing inner race relative on the opposite side external diameter of one-sided rib cover have flat ring washer, be transition fit between the internal diameter of flat ring washer and the opposite side external diameter relative to one-sided rib of bearing inner race, flat ring washer load onto after bearing inner race symmetrical, the inner side surface of the side rib of described bearing inner race and the flat ring washer of opposite side is inclined-plane; The middle part of described short columnar roller is straight edge line, and both sides are gradually to the 3rd cambered surface that short columnar roller is recessed.
As preferably, described bearing inner race concordant with the straight edge line of inner ring raceway relative to the opposite side external diameter of one-sided rib.
As preferably, the inner side surface of the both sides rib of described bearing outer ring is the inclined-plane of Off-Radial 2-8 degree, and the inner side surface of the side rib of described bearing inner race and the flat ring washer of opposite side is the inclined-plane of Off-Radial 2-8 degree.
As preferably, the horizontal length sum of the middle part straight edge line of described outer ring raceway and the first cambered surface of both sides, the horizontal length sum of the middle part straight edge line of inner ring raceway and the second cambered surface of both sides, and the length of short columnar roller is L, then the first cambered surface of bearing outer ring, second cambered surface of inner ring raceway, horizontal length l=0.10L ~ the 0.15L of the 3rd cambered surface of short columnar roller, first cambered surface of outer ring raceway, second cambered surface of inner ring raceway, 3rd cambered surface of short columnar roller is the arc surface of radius R=(70 ~ 100) L, first cambered surface of outer ring raceway, second cambered surface of inner ring raceway, radial direction recessed amount T=(6 ~ 8 of the 3rd cambered surface of short columnar roller) × D/10000, D is the diameter of short columnar roller.
Further preferably, the horizontal length l=0.12L of the 3rd cambered surface of the first cambered surface of described outer ring raceway, the second cambered surface of inner ring raceway, short columnar roller.
The beneficial effects of the utility model are:
(1) outer ring raceway is improved, the working surface of inner ring raceway and short columnar roller, also be, the middle part of outer ring raceway is straight edge line, both sides are gradually to the first cambered surface that bearing outer ring is recessed, the middle part of inner ring raceway is straight edge line, both sides are gradually to the second cambered surface that bearing inner race is recessed, the middle part of short columnar roller is straight edge line, both sides are gradually to the 3rd cambered surface that short columnar roller is recessed, this improvement can avoid outer ring raceway, unusual distributed contact pressure is produced between inner ring raceway and short columnar roller, and it is concentrated to reduce stress, outer ring raceway, not easily formed between inner ring raceway and short columnar roller and peel off in early days, and then the vibrating noise of bearing can be reduced, improve the reliability of service life of bearing, improve the bearing capacity of bearing, and improve limit speed,
(2) by the inner side surface of the both sides rib of bearing outer ring, the inner side surface of the side rib of bearing inner race and the flat ring washer of opposite side is modified into inclined-plane, the tilt angle on preferred inclined-plane is 2-8 degree, like this, on the one hand, reduce bearing outer ring significantly, sliding friction between the both sides rib (the side rib of bearing inner race is substituted by flat ring washer) of bearing inner race and the end face of short columnar roller, make bearing outer ring, wearing and tearing between the both sides rib of bearing inner race and the end face of short columnar roller significantly reduce, on the other hand, lubricant oil easily enters outer ring raceway, between inner ring raceway and short columnar roller, form oil film, thus the temperature rise reduced under bearing high speed conditions, improve the life-span of bearing,
(3) bearing inner race has flat ring washer relative to cover on the opposite side external diameter of one-sided rib, when bearing is assembled, flat ring washer is enclosed within bearing inner race relative on the opposite side external diameter of one-sided rib, slightly firmly press-in again, completely fill cylindrical roller bearing as a whole, transport and completely fill cylindrical roller bearing in installation process and integrally carry out, like this, can avoid transport with in installation process because bearing main body is separated caused outer ring raceway with flat ring washer, bump injury between inner ring raceway and short columnar roller, and the installation formality of installation process together flat ring washer less, install more convenient.
Accompanying drawing explanation
Fig. 1 is the structural drawing of existing cylindrical roller bearing.
Fig. 2 is a kind of structural drawing completely filling cylindrical roller bearing of the utility model.
Fig. 3 is the structural drawing of the bearing outer ring of existing cylindrical roller bearing.
Fig. 4 is the A portion enlarged view of Fig. 3.
Fig. 5 is a kind of structural drawing completely filling the bearing outer ring of cylindrical roller bearing of the utility model.
Fig. 6 is the B portion enlarged view of Fig. 5.
Fig. 7 is the preferred geometry graph of a relation in B portion in Fig. 5.
Fig. 8 is a kind of structural drawing completely filling the bearing outer ring of cylindrical roller bearing of the utility model.
Fig. 9 is the C portion enlarged view of Fig. 7.
Figure 10 is the structural drawing of the bearing inner race of existing cylindrical roller bearing.
Figure 11 is a kind of structural drawing completely filling the bearing inner race of cylindrical roller bearing of the utility model.
Figure 12 is the D portion enlarged view of Figure 10.
Figure 13 is the preferred geometry graph of a relation in D portion in Figure 10.
Figure 14 is the structural drawing of the short columnar roller of existing cylindrical roller bearing.
Figure 15 is a kind of structural drawing completely filling the short columnar roller of cylindrical roller bearing of the utility model.
Figure 16 is the preferred geometry graph of a relation of Figure 15.
Drawing reference numeral: 1-bearing outer ring; 11-outer ring raceway; The middle part of 111-outer ring raceway; 112-first cambered surface; 2-bearing inner race; 21-inner ring raceway; The middle part of 211-inner ring raceway; 212-second cambered surface; 22-opposite side external diameter; 3-short columnar roller; The middle part of 31-short columnar roller; 32-the 3rd cambered surface; 4-grinding wheel groove; The flat ring washer of 5-; 6-rib; 7-inner side surface.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 2, one completely fills cylindrical roller bearing, comprise bearing outer ring 1, bearing inner race 2, short columnar roller 3, the internal surface of described bearing outer ring 1 is provided with the outer ring raceway 11 rolled for short columnar roller 3, the outer surface of described bearing inner race 2 is provided with the inner ring raceway 21 rolled for short columnar roller 3, short columnar roller 3 is not completely contained between outer ring raceway 11 and inner ring raceway 21 by retainer, the side angle of the both sides of described outer ring raceway 11 and inner ring raceway 21 is provided with the grinding wheel groove 4 facilitating wheel grinding.
As shown in Fig. 5, Fig. 6, Fig. 8, Fig. 9, the described middle part 111 completely filling the outer ring raceway of cylindrical roller bearing is straight edge line, both sides are gradually to the first cambered surface 112 that bearing outer ring 1 is recessed, first cambered surface 112 of both sides is symmetrical and connect with respective grinding wheel groove 4, the both sides of described bearing outer ring 1 have rib 6, the inner side surface 7 of both sides rib 6 is inclined-plane, and in the present embodiment, this inclined-plane is the inclined-plane of Off-Radial 2-8 degree.
As shown in Figure 11-Figure 12, the described middle part 211 completely filling the inner ring raceway of cylindrical roller bearing is straight edge line, both sides are gradually to the second cambered surface 212 that bearing inner race 2 is recessed, second cambered surface 212 of both sides is symmetrical and connect with respective grinding wheel groove 4, the one-sided of described bearing inner race 2 has rib 6, bearing inner race 2 relative on the opposite side external diameter 22 of one-sided rib 6 cover have flat ring washer 5, flat ring washer 5 load onto after bearing inner race 2 symmetrical, the inner side surface 7 of the side rib 6 of described bearing inner race 2 and the flat ring washer 5 of opposite side is inclined-plane, in the present embodiment, this inclined-plane is the inclined-plane of Off-Radial 2-8 degree.
In the present embodiment, bearing inner race 2 concordant with the straight edge line of inner ring raceway 21 relative to the opposite side external diameter 22 of one-sided rib 6, be transition fit between the internal diameter of described flat ring washer 5 and the opposite side external diameter 22 relative to one-sided rib 6 of bearing inner race 2, transition fit is a kind of fit system between Spielpassung and interference fit, transition fit need ensure that bearing inner race 2 can rotate along flat ring washer 5, further, flat ring washer 5 not easily falls down from opposite side external diameter 22.
As shown in figure 15, the described middle part 31 completely filling the short columnar roller of cylindrical roller bearing is straight edge line, and both sides are gradually to the 3rd cambered surface 32 that short columnar roller 3 is recessed.
Fig. 7, Figure 13, Figure 16 is corresponding outer ring raceway respectively, inner ring raceway, the preferred geometry relation of short columnar roller, the horizontal length sum of the middle part straight edge line of described outer ring raceway 11 and the first cambered surface 112 of both sides is L, the horizontal length sum of the middle part straight edge line of described inner ring raceway 21 and the second cambered surface 212 of both sides is L, the length of short columnar roller 3 is L, above-mentioned three's length is equal, then preferably, first cambered surface 112 of outer ring raceway 11, second cambered surface 212 of inner ring raceway 21, horizontal length l=0.10L ~ the 0.15L of the 3rd cambered surface 32 of short columnar roller 3, first cambered surface 112 of outer ring raceway 11, second cambered surface 212 of inner ring raceway 21, 3rd cambered surface 32 of short columnar roller 3 is the arc surface of radius R=(70 ~ 100) L, first cambered surface 112 of outer ring raceway 11, second cambered surface 212 of inner ring raceway 21, radial direction recessed amount T=(6 ~ 8 of the 3rd cambered surface 32 of short columnar roller 3) × D/10000, D is the diameter of short columnar roller.The radius R of the 3rd cambered surface 32 of the first cambered surface 112 of above-mentioned outer ring raceway 11, the second cambered surface 212 of inner ring raceway 21, short columnar roller 3 is identical, and the radial direction recessed amount T-phase of the 3rd cambered surface 32 of the first cambered surface 112 of outer ring raceway 11, the second cambered surface 212 of inner ring raceway 21, short columnar roller 3 is same.As preferred further, the horizontal length l=0.12L of the 3rd cambered surface 32 of the first cambered surface 112 of outer ring raceway 11, the second cambered surface 212 of inner ring raceway 21, short columnar roller 3.
Designed by above-mentioned parameter, more preferably can avoid outer ring raceway 11, between inner ring raceway 21 and short columnar roller 3, produce unusual distributed contact pressure, and reduce stress and concentrate, thus outer ring raceway 11, more not easily formed between inner ring raceway 21 and short columnar roller 3 and peel off in early days.
The working principle of the present embodiment is as follows:
1, improve outer ring raceway 11, the working surface of inner ring raceway 21 and short columnar roller 3, also be, the middle part 111 of outer ring raceway is straight edge line, both sides are gradually to the first cambered surface 112 that bearing outer ring 1 is recessed, the middle part 211 of inner ring raceway is straight edge line, both sides are gradually to the second cambered surface 212 that bearing inner race 2 is recessed, the middle part 31 of short columnar roller is straight edge line, both sides are gradually to the 3rd cambered surface 32 that short columnar roller 3 is recessed, this improvement can avoid outer ring raceway 11, unusual distributed contact pressure is produced between inner ring raceway 21 and short columnar roller 3, and it is concentrated to reduce stress, outer ring raceway 11, not easily formed between inner ring raceway 21 and short columnar roller 3 and peel off in early days, and then the vibrating noise of bearing can be reduced, improve the reliability of service life of bearing, improve the bearing capacity of bearing, and improve limit speed,
2, by the inner side surface 7 of the both sides rib 6 of bearing outer ring 1, the inner side surface 7 of the side rib 6 of bearing inner race 2 and the flat ring washer 5 of opposite side is modified into inclined-plane, the tilt angle on preferred inclined-plane is 2-8 degree, like this, on the one hand, reduce bearing outer ring 1 significantly, sliding friction between the both sides rib (the side rib of bearing inner race 2 is substituted by flat ring washer 5) of bearing inner race 2 and the end face of short columnar roller 3, make bearing outer ring 1, wearing and tearing between the both sides rib of bearing inner race 2 and the end face of short columnar roller 3 significantly reduce, on the other hand, lubricant oil easily enters outer ring raceway 11, between inner ring raceway 21 and short columnar roller 3, form oil film, thus the temperature rise reduced under bearing high speed conditions, improve the life-span of bearing,
3, bearing inner race 2 relative on the opposite side external diameter 22 of one-sided rib 6 cover have flat ring washer, when bearing is assembled, flat ring washer 5 is enclosed within the opposite side external diameter 22 relative to one-sided rib 6 of bearing inner race 2, slightly firmly press-in again, completely fill cylindrical roller bearing as a whole, transport and completely fill cylindrical roller bearing in installation process and integrally carry out, like this, can avoid transport with in installation process because bearing main body is separated caused outer ring raceway 11 with flat ring washer 5, bump injury between inner ring raceway 21 and short columnar roller 3, and the installation formality of installation process together flat ring washer 5 less, install more convenient.
In the utility model, the first cambered surface 112 of outer ring raceway 11 both sides should be not tangent with the grinding wheel groove 4 connected separately, and the second cambered surface 212 of inner ring raceway 21 both sides should be not tangent with the grinding wheel groove 4 connected separately.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. one kind completely fills cylindrical roller bearing, comprise bearing outer ring, bearing inner race, short columnar roller, the internal surface of described bearing outer ring is provided with the outer ring raceway rolled for short columnar roller, the outer surface of described bearing inner race is provided with the inner ring raceway rolled for short columnar roller, it is characterized in that: described short columnar roller is not completely contained between outer ring raceway and inner ring raceway by retainer, the side angle of the both sides of described outer ring raceway and inner ring raceway is provided with the grinding wheel groove facilitating wheel grinding;
The middle part of described outer ring raceway is straight edge line, and both sides are gradually to the first cambered surface that bearing outer ring is recessed, and the first cambered surface of both sides is symmetrical and connect with respective grinding wheel groove, and the inner side surface of the both sides rib of described bearing outer ring is inclined-plane; The middle part of described inner ring raceway is straight edge line, both sides are gradually to the second cambered surface that bearing inner race is recessed, second cambered surface of both sides is symmetrical and connect with respective grinding wheel groove, the one-sided of described bearing inner race has a grade limit, bearing inner race relative on the opposite side external diameter of one-sided rib cover have flat ring washer, be transition fit between the internal diameter of flat ring washer and the opposite side external diameter relative to one-sided rib of bearing inner race, flat ring washer load onto after bearing inner race symmetrical, the inner side surface of the side rib of described bearing inner race and the flat ring washer of opposite side is inclined-plane; The middle part of described short columnar roller is straight edge line, and both sides are gradually to the 3rd cambered surface that short columnar roller is recessed.
2. completely fill cylindrical roller bearing as claimed in claim 1, it is characterized in that: described bearing inner race concordant with the straight edge line of inner ring raceway relative to the opposite side external diameter of one-sided rib.
3. completely fill cylindrical roller bearing as claimed in claim 1 or 2, it is characterized in that: the inner side surface of the both sides rib of described bearing outer ring is the inclined-plane of Off-Radial 2-8 degree, the inner side surface of the side rib of described bearing inner race and the flat ring washer of opposite side is the inclined-plane of Off-Radial 2-8 degree.
4. completely fill cylindrical roller bearing as claimed in claim 3, it is characterized in that: the horizontal length sum of the middle part straight edge line of described outer ring raceway and the first cambered surface of both sides, the horizontal length sum of the middle part straight edge line of inner ring raceway and the second cambered surface of both sides, and the length of short columnar roller is L, then the first cambered surface of bearing outer ring, second cambered surface of inner ring raceway, horizontal length l=0.10L ~ the 0.15L of the 3rd cambered surface of short columnar roller, first cambered surface of outer ring raceway, second cambered surface of inner ring raceway, 3rd cambered surface of short columnar roller is the arc surface of radius R=(70 ~ 100) L, first cambered surface of outer ring raceway, second cambered surface of inner ring raceway, radial direction recessed amount T=(6 ~ 8 of the 3rd cambered surface of short columnar roller) × D/10000, D is the diameter of short columnar roller.
5. completely fill cylindrical roller bearing as claimed in claim 4, it is characterized in that: the horizontal length l=0.12L of the 3rd cambered surface of the first cambered surface of described outer ring raceway, the second cambered surface of inner ring raceway, short columnar roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633909.0U CN204878343U (en) | 2015-08-21 | 2015-08-21 | Short cylindrical roller bearing of full dress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633909.0U CN204878343U (en) | 2015-08-21 | 2015-08-21 | Short cylindrical roller bearing of full dress |
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| Publication Number | Publication Date |
|---|---|
| CN204878343U true CN204878343U (en) | 2015-12-16 |
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ID=54822719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520633909.0U Expired - Fee Related CN204878343U (en) | 2015-08-21 | 2015-08-21 | Short cylindrical roller bearing of full dress |
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| Country | Link |
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| CN (1) | CN204878343U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443572A (en) * | 2015-12-21 | 2016-03-30 | 瓦房店轴承集团有限责任公司 | Single-side loose rib and single-row-full self-aligning roller bearing |
| CN109026985A (en) * | 2018-10-22 | 2018-12-18 | 河北富特来轴承科技有限公司 | Crescent moon bearing waves component and hydraulic pump |
| CN111503156A (en) * | 2020-03-27 | 2020-08-07 | 人本集团有限公司 | Cylindrical roller bearing |
| CN111649062A (en) * | 2020-06-28 | 2020-09-11 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Self-sealing full complement cylindrical roller bearing |
-
2015
- 2015-08-21 CN CN201520633909.0U patent/CN204878343U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443572A (en) * | 2015-12-21 | 2016-03-30 | 瓦房店轴承集团有限责任公司 | Single-side loose rib and single-row-full self-aligning roller bearing |
| CN105443572B (en) * | 2015-12-21 | 2018-07-27 | 瓦房店轴承集团有限责任公司 | Unilateral loose rib single row full-filling self-aligning roller bearing |
| CN109026985A (en) * | 2018-10-22 | 2018-12-18 | 河北富特来轴承科技有限公司 | Crescent moon bearing waves component and hydraulic pump |
| CN111503156A (en) * | 2020-03-27 | 2020-08-07 | 人本集团有限公司 | Cylindrical roller bearing |
| CN111649062A (en) * | 2020-06-28 | 2020-09-11 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Self-sealing full complement cylindrical roller bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180604 Address after: 313100 Chen Wang Lu Yidong, Changxin economic and Technological Development Zone, Huzhou, Zhejiang Patentee after: Eight ring bearing (Changxin) Co., Ltd. Address before: 318050 No. 889 Xin'an West Street, Luqiao District, Taizhou, Zhejiang. Patentee before: Zhejiang Bahuan Bearing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200821 |