Roller shutter door , also known as "shutter door", lots of panel pieces connected together, fixed in the guide rail , take above reel as the center of rotation.
Roller shutter door is used for commercial facades, garages, shopping malls, hospitals, factories and mines and other public places or residential.Electric roller shutter door, especially for large openings, inconvenient to install the ground door , quick opening effect. Such as for the garage door, shopping mall fire shutter door.
Opening methods: Handing driving mode
Rope driving mode
Remote control driving mode
Electric switch driving mode
Roller Shutter Door,Galvanized Roller Shutter Door,Aluminum Roller Shutter Door,Transparent Roller Shutter Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.spiralfastdoor.com
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge> Bearing casting methods and targets Bearing casting method and target
The position of the bearing in the industrial production does not have to be said; it can be said that it is heavy. Therefore, the development of today's science and technology society is inseparable from the development of bearing skills; into the bearing market, imported bearings, domestic bearings, assembled bearings, "cottage bearings" full of flying; Why do you choose imported bearings and do not choose domestic bearings? Also, why did you choose NTN bearings and discard them? Of course, there are many reasons for this; but at the end we need to use bearings that meet the needs of individual production and quality. Below we take Japan NTN bearing as an example; talk about why NTN bearing quality is so good, import NTN bearing casting: Japan NTN imported bearing application The forging machine applies pressure to the metal blank; plastically deforms the NTN bearing to obtain a machining method with a certain mechanical function, a certain shape and a scale forging. Japan NTN bearing casting: smelting the metal into a liquid that meets the required demand and pouring it into the mold The process of obtaining castings (parts or blanks) with the shape, dimensions and functions after cooling and coagulation, and high-speed fine-angle touch ball bearings in NTN bearings; this type of bearing is mainly used for high-speed loads. Rotating occasions; the demand for bearings is also appropriate; the use of the process in the demand for high-precision bearings, high speed, low temperature rise and low oscillation and has a certain service life. Such NTN bearings are generally used as support for high-speed electric spindles in pairs Application; is the key component of the high-speed electric spindle of the internal and external surface grinder. The primary skill target: 1NTN Cheng precision target: Beyond GB / 307.1-94 P4 level precision 2. High speed function target: dmN value 1.31. 8x 106 /min /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
3. Service life (even): >1500 h
The service life of high-speed fine-angle touch ball bearings has a lot to do with the device; the following should be emphasized:
1. The bearing device should be carried out in a dust-free and clean room; the bearing should be carefully selected; the spacer for the bearing should be ground; under the premise of maintaining the height of the inner and outer ring spacers; the parallelism of the spacer should be controlled below 1um. 2. The NTN bearing device should be cleaned before cleaning; when the inner ring slope is facing upwards; the hand is sensitive; there is no blockage; after drying; put a specified amount of oil; if the oil mist is smooth, a small amount of oil mist oil should be put in, 3 . NTN bearing device should use special things; even force; no hitting, 4. NTN bearing storage should be hygienic and ventilated; no corrosive gas; relative humidity should not exceed 65; long-term storage should be regularly rust-proof.
Recommend to friends comments close window Bearing related knowledge Grinding machine static pressure bearing repair experience
JDB bearing---New product for mold occupation
5 steps let you recognize the true and false oil-free bearings of imported bearings
Analysis of Wear Failure of NTN Bearings
This article links to http://
Please indicate China Bearing Network http://
Previous: Main elements of Japan's imported bearing oscillations Next: Common terms and definitions for rolling bearing parts
Bearing casting method and target
Source: Bearing network time: 2013-08-25