Imports of miniature bearing sand for system vendors would about how to choose

Imports of miniature bearing sand for system vendors would about how to choose miniature bearing on sand making machine equipment plays an important role, for its normal operation is having the effect that cannot ignore. So how to choose the bearing? Especially for imported bearing, and how to choose? 1, the tolerance is miniature bearing according to ISO and JIS standard. For high-precision and high-speed machines, it is recommended to use precision imported bearing level 5 or above. For sand making machine that requires periodic inspection and maintenance of equipment, can be installed on inner and outer import bearings, such as: cylindrical bearings, needle roller bearings and tapered bearings is very suitable for the occasion, can greatly simplify the maintenance program. 2, size under normal circumstances, the import bearings can be installed the space is very limited. In most cases, the diameter of axle is according to the design constraints of sand making machine equipment, so the import bearing size is determined according to its diameter. Standard of the miniature bearing size form a lot, but the best sand making machine design USES the standard import bearings. Exert on the imported bearing load, nature, size, direction is changeable. Usually, the basic load rating on dimension table are displayed. Axial load and radial load, and so on, but also to choose suitable for imported bearings of important factor. When the size of the ball and needle bearing fairly, needle roller bearings imported usually have higher load capacity and bear the larger vibration and shock loads. 3, speed of rotation speed is according to the type, size, precision, imported bearing cage type, load, lubrication and cooling way. Imported bearing table lists the standard precision of miniature bearing under oil lubrication and grease lubrication allowed speed. Usually, deep groove ball bearings, automatic self-aligning ball bearings and cylindrical roller bearings are suitable for high-speed operation. For enterprises, improve profit growth is an important aspect of control of production cost of raw materials. And since the market sales difficulty, raw materials and rental companies franchisees are more expensive, which was originally the hardware that defend bath more embarrassed situation. With the market competition intensified, hardware sanitary ware industry for dealers, is also more difficult. 'Don't sell a few products in a day and sometimes even a few days not to open, but the store rent is higher than a year, a year a month down, don't earn profit, not lose money is very good. 'Reporter interview, a name is wang dealer told reporters. Data shows, rising raw materials since 2010 became a hot topic, hardware sanitary ware industry in 2012, some hardware sanitary ware mainly raw materials such as copper, the unit price within half a year up 32% year-on-year, since the break through $9000 / ton repeatedly refresh record highs. And steel material price from October 2012 started to jump in, since the middle of has been high, which makes originally made by low price to buy raw materials processing sales of hardware sanitary ware enterprises difficult to smooth on original path. The rise in raw material, makes the production cost of hardware product that defend bath. A product of the original factory price is in 150 yuan or so, but with the rise in raw materials, products in the factory price is higher than 200 yuan, not including processing cost, and in this case, the market price is down again and again, with staff's wages, foreign transport enterprises logistics cost and the dealer at a local store, a product of the final profit is almost into single digits. Dealers have wry smile said: 'we are doing market consumers porters. ”