High-precision navigation platform bearings can be divided into three types: marine navigation platform bearings, rocket-used navigation platform bearings and missile-used navigation platform bearings. It is required that the bearings must have long service life (more than ten years), high precision, high reliability, and excellent resistance to corrosion and impact. When the bearings are working at a low speed or swinging, the working or storage temperature is kept from -40°C to +80°C.
As for the model selection, generally, the bearings used on the attachment end are angular contact ball bearings, and the bearings used on the movable end are angular contact ball bearings or deep groove ball bearings. As for the ring thickness, the bearings with thin ring thickness and light weight are often used. The lubrication can be done by the bearing itself, which is normally for only once. It is required that the friction torque must be little and even, of which the coefficient of friction is about 0.0015. As for the matching of the bearings, in order to guarantee the consistency of the functions, it is required that the difference of the two contact angles of the two bearings in pairs should be less than 0.5°, and the difference between two diameters should be less than 2μm. The rigidities should be close. As for the installation, the bearings in pairs should be installed with preload which is calculated according to the quality of the navigation platform and the requirement of the rigidity of the bearings.
Angular contact ball bearings :
The ZYS precision angular contact ball bearings for spindles, have four size series,718,719,70 and 72. With the same inner diameter, the outer diameters and the widths of 718,719,70 and 72 series increase in turn.
ZYS precision angular contact ball bearing with 15 ° (C) and 25 ° (AC) contact angles. As for the angular contact ball bearings, the bigger the contact angle is, the greater the axial load capacity is, but the lower the limited speed of bearings becomes. Therefore ,the spindle, with high speed and small axial load ,should adopt the 15 ° angular contact ball bearings,whereas the 25 ° angular contact ball bearing should be adopted.
ZYS precision angular contact ball bearings with high-speed angular contact bearings (standard series), super-speed angular contact ball bearings, high-speed sealed angular contact ball bearings and high-speed spindle bearings.
Types and performances of angular contact ball bearing :
ZYS precision angular contact ball bearings with high-speed angular contact bearings (standard series), super-speed angular contact ball bearings, high-speed sealed angular contact ball bearings and high-speed spindle bearings.
Other rolling bearing
ZYS Luoyang Bearing Science And Technology Co.,ltd.
ZYS Tenet: To lead the science and technology development of bearing industry and to improve the world'sequipment level.
ZYS Spirit: To keep continuous improvement, to pursue brilliance.
ZYS Core values: Integrity, rigor, innovation, mutual benefit.
ZYS was formerly known as Luoyang bearing research institute, which was founded in 1958 and was the only first-class comprehensive research institute in China bearing industry. As it became one member of China National Machinery Industry Corporation in 1999, the former institute was transformed into the science and technology enterprise. Then Luoyang Bearing Science & Technology Co., Ltd. was established in 2001. It was listed at Shenzhen Stock Exchange with stock code 002046 in 2005.
ZYS Advantage
ZYS has a strong strength of manufacturing high-precision and high-reliability bearings and relevant parts. ZYS company not only possesses advanced bearing manufacturing equipments and international first-class measuring instruments,but also has strong strength of manufacturing,inspecting and testing the high-precision and high-reliability bearings and relevant spare parts.In the meantime,it always keeps a leading position in bearing basic theory,lubrication technology,design,material,test,information criterion and other aspects.
Glory
Top 200 most promising companies of China in Forbes
Top 500 in China Machinery Industry
Excellent Enterprise with China Well-know Trademark
High-performance Bearings Laboratory
State Quality Supervision and Testing Center for Bearing
ISO/TC4 China Secretariat
The Research Center for High-speed Precision Bearing Engineering in Machinery Industry
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We would like to and ready to do business with any company from all over the world.If any of ZYS products interests you or if you have interests in ZYS company,please don't hesitate to contact with us,we would like to give you ZYS best quality service any day any time !
Contact us
Address: No.1 Jilin Road, Luoyang City, Henan, Province, China.
Zip Code:471039
Website:chinazys.en.made-in-china.com
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| Material: GCr15,9Cr18,G20CrMo or others |
| Certificate: GB/T19001-2000(ISO9001:2000), GJB/Z9001A-2001, GJB9001A-2001 |
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