Asymmetric Angular Contact Four-Point Contact Ball Bearings for Submersible Pumps and Submersible Pumps
This utility model provides an asymmetrical angular-contact four-point contact ball bearing suitable for use in deep-well pumps. It can withstand axial impact loads during start-up and shutdown, and, under normal operating conditions where the axial load is less than the radial load, it maintains proper rolling behavior. The bearing comprises an outer ring, an inner ring, steel balls, and a retainer. The outer ring is provided with a first raceway groove on the surface facing the inner ring, while the inner ring is provided with a second raceway groove on the surface facing the outer ring. The cross-section of the first raceway groove consists of a first circular arc and a second circular arc, with the curvature of the first arc being greater than that of the second arc. The second raceway groove…
This utility model provides an asymmetrical angular-contact four-point contact ball bearing suitable for use in deep-well pumps. It can withstand axial impact loads during start-up and shutdown, and, under normal operating conditions when the axial load is less than the radial load, it maintains proper rolling behavior. The bearing comprises an outer ring, an inner ring, steel balls, and a retainer. The outer ring is provided with a first raceway groove on the surface facing the inner ring, while the inner ring features a second raceway groove on the surface facing the outer ring. The cross-section of the first raceway groove consists of a first arc and a second arc, with the curvature of the first arc greater than that of the second arc. The second raceway groove is formed by a third arc and a fourth arc, where the curvature of the third arc is smaller than that of the fourth arc. The steel balls are positioned between the first and second raceway grooves, and are distributed within the spacer cage of the retainer. This design addresses the issues associated with conventional single‑type bearings—namely, their susceptibility to damage and short service life—which can adversely affect the normal operation of deep-well pumps.
| Applicant: Hangzhou Chichuang Machinery Co., Ltd. |
| Applicant: HANGZHOU CHICHUANG MACHINERY CO LTD |
| Address: 311106 Qianjiang Economic Zone, Hangzhou City, Zhejiang Province ******** (hidden) |
| Inventor (Designer): Zhou Xiaolin Liu Jieqing |
| Inventor: ZHOU XIAOLIN; LIU JIEQING |
| Main classification number: F16C19/16(2006.01)I |
| Classification number: F16C19/16(2006.01)I F16C33/58(2006.01)I F16C33/80(2006.01)I |
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