high precision Slewing bearing should be used

there are strict requirements for precision rotation of the spindle, high precision Slewing bearing should be used, such as precision lathes, milling machines, boring, grinding grinding, aircraft engine, turbocharger, precision instruments selected C, D grade; coordinate boring machine, High-speed grinding elect B, C grade. Rolling easy maintenance, reliable, good starting performance at moderate speeds higher carrying capacity. Compared with the sliding bearing, radial bearing a larger size, poor damping capacity, high speed, low life sound bigger. Rolling in the special bearing (mainly radial force) usually consists of inner and outer rings, rolling and rolling element cage four parts.

condition detection tapered roller bearing instrument

Design News magazine has organized Design NNCF series bearing News Golden Mousetrap Awards for organizing for over 20 years, Golden Mousetrap Award in recognition of the main purpose of the product design and manufacturing engineering innovation efforts. state detection equipment to win the 2010 "Best Product" design award shows  Bearing Group engineers a rich imagination and innovation.

state detection equipment project manager in this state detection instrument SKF won the 2010 "Best Product" Design Award talked about: "We are delighted to have won" Best Product "design award this honor, this honor is  years longer state detection instrument competitiveness certainly, condition detection tapered roller bearing instrument is a suitable device is just starting out preventive maintenance plan or want to supplement existing condition monitoring. their reading is digital, has established standards or backup data by experienced analysts using instrument for further analysis, as well as 100 backed by years of knowledge engineering. "

There are many moving parts may produce noise

There are many moving parts may produce noise , and some may not rotate the rotation member and the contact member occurs . If the confirmation is four  tapered roller bearing  noise , may be damaged and need replacing.  2. Because the former leads to the failure of both sides working conditions are similar , so even just a bad one , it is recommended to replace in pairs . 3. Relatively sensitive to imports, in any case need to adopt the right approach and the right tools. In storage and during installation , the bearing parts can not be damaged. Require greater pressure pushed , so they need special tools. Be sure to refer to the manual . 4. Installation should be clean and tidy environment, will shorten bearings for printing machine  the tiny particles into the four -row cylindrical roller bearing life. Maintaining a clean environment when replacement is important. Allowed to tap with a hammer , be careful not to fall to the ground ( or similar misconduct ) . Before installation of the shaft and housing should also check condition , even a slight wear will lead to poor fit , thereby causing damage.  Metallurgical quality imported bearing materials was the main factor in the impact of early bearing failure .

Double row cylindrical roller Stainless steel slewing bearings are divided into two forms

Double row cylindrical roller Stainless steel slewing bearings are divided into two forms:
⑴ NN0000 type double row cylindrical roller bearing
The bearing structure is compact, small deformation under load, it is particularly suitable for machine tool spindle bearing. Its outer wall, so you can install the outer ring and the inner components, respectively (with roller and cage), does not limit the axial displacement of shaft or housing, the same size and radial single row cylindrical roller bearings , can withstand greater radial load.
⑵ NN0000K type double row tapered bore cylindrical roller bearings
This kind of bearing structure is compact, small deformation under load and therefore suitable for machine tool spindle bearing. Bearing bore is tapered to micro adjust the radial clearance.
This kind of bearing outer ring without ribs due, it can be installed separately outer and inner components (with roller and cage), does not limit the axial displacement of shaft or housing, the same size and radial single row cylindrical roller bearings compared to withstand greater radial load.

Cylindrical roller bearing cage and riveting

Core Tip: Check the radial clearance by qualified bearing cage assembly can be carried out and the riveting process. Cylindrical roller bearing cage more categories, so roller and cage assembly forms are different. Here are some typical cage assembly methods: 1. Entity halves riveted cage and use this cage
After examination of the Taper bearing radial clearance eligibility can be cage assembly and riveting process. Cylindrical roller bearing cage more categories, so roller and cage assembly forms are different. Here are some typical cage assembly methods:
The use of larger quantities of the cage. It consists of the cage seat and cover composition, with long rivets riveting fastening.
When this cage used in the double wall of the inner cylindrical roller bearing on, then the first cage on the inner ring, and then put together a good first roller mounted on the pocket hole, and finally covered buckle in cage seat, penetration rivets, riveting machine on electric tire tool on riveted.

Given the current legal system is not perfect the socialist market economy

Given the current legal system is not perfect the socialist market economy, and many consumers do not know how to identify the merits of the bearing, or lured by the low price, so that small manufacturers of counterfeit bearings and bearing flooded the market. According to statistics, the current market, small manufacturers of bearings and bearing counterfeit share of over 60% in some areas even more than 80% market share. However, because of its inherent quality and inferior bearing defects and low precision and great harm, giving users a huge loss.
1, due to raw material constraints, shoddy Cylindrical roller bearing hardness less than the national requirements. Deformation occurs during use, etc., which can affect their life, damage to other parts of the machine. In particular, some high temperature bearings and high-speed bearings, bearing hardness directly affect their life and the use of safety.
2, due to the small manufacturers and underground factories dipped fire technical limitations, and shoddy bearing Nga uneven heating temperature dipped in the fire, so that the impact of the precision of the bearing, the deformed and so on.
3, its great technical limitations directly affect the precision of these Luoyang bearing  so that this problem can not be overcome as flawed, but the gap is not only directly harm precision machine parts, also makes bearings become more cumbersome handling things, and even can be installed without, the situation can not be unloaded, direct damage to the machine, delay hours.

Structural characteristics of tapered roller bearings

tapered roller bearings type code is 30000, tapered roller bearings are separable bearings. Under normal circumstances, especially in GB/T307.1-94 "Rolling bearings tolerance" are involved in a range of sizes within the tapered roller bearing outer ring and inner components can be interchanged between one hundred percent use.
The angle of the outer ring and the outer raceway diameter size has been standardized with the same size and shape provides. Not allowed to change in design and manufacturing. To cause the Taper bearing outer ring and inner components available in the world between interchangeable.
Tapered roller bearings are mainly used to bear radial load mainly radial and axial joint load. And angular contact ball bearings, bearing capacity, low speed limits. Tapered roller bearings can withstand axial load in one direction, the shaft or housing to limit axial displacement in one direction.

Cylindrical roller bearings categories

Cylindrical roller bearings equipped with rolling under different number of columns, can be divided into single row, double row and multi-row cylindrical roller bearings and other different structures. Different structures bearing wall position is also reflected in the design. Which are commonly used cylindrical roller bearings have the following forms:
Single row cylindrical roller bearings: single row cylindrical roller bearing are separable bearings, easy installation and removal, two rings can be a tight fit, fix the roller and raceway contact line between the stress concentration can be reduced.
Double row cylindrical roller bearings: double row cylindrical roller bearings are swimming bearings, the Stainless steel slewing bearing installation and removal easy. Two rings are can be a tight fit. Double row cylindrical roller bearings almost not allowed inclination.
Single row cylindrical roller bearings: single row cylindrical roller bearings are separable bearings, easy installation and removal, two rings can be a tight fit, fix the roller and raceway contact line between the stress concentration can be reduced.