A batch of Four Row Cylindrical Roller Bearing 650RX2841C Was Dispatched.
A batch of large size four-row cylindrical roller bearings was dispatched at last week. These bearings are going to be used for rolling mills, detailed information as follows:
Bearing Type: 4-row cylindrical roller bearing;
Type code: 650RX2841C, 515194A (FAG), FCDP130180650, FCDP130184670, FCDP130184680, BC4-8022/HA6 (SKF), 650RV9212 (NSK), 4R13005 (NTN), 130FC92670 (Koyo);
Dimension: ID 650/ OD 920* H670mm;
Material: Case carburizing steel G20Cr2Ni4A;
Radial Clearance: C3;
Case Depth: ≥3mm;
Cage Structure: Pin welding；
Four-row cylindrical roller bearings for rolling mills usually in 3 type structures: FC type (one inner ring), FCD type (double inner rings), and FCDP type (double inner ring, an outer ring with flat retaining ring).
The working characteristics of rolling mill bearings are bad working conditions, large load, high unit pressure, large heat output, and short service life. Compared with the common bearing, it has many different characteristics.
From the application point of view, the bearing of the supporting rolls should have good lubrication and cooling conditions, the radial size should be as smaller as possible. The application situation of the support rolls and the working roll is very different, the bearing's structure and lubrication are also different.
The main application conditions to be specially considered for rolling mill bearing are as follows:
1. Rotation speed: not only the highest rotation speed should be considered here, but sometimes slow rotation speed is also a problem, the slow rotation speed is not easy to form lubricating oil coat;
2. The force is large: and the force of the multi-column rolling body is uneven, sometimes even some columns are not;
3. Eccentricity of inner and outer rings: This is mainly reflected in the bearing clearance, which directly affects the accuracy of rolling plate and strip;
4. Axial force: for the rolling mill with four-row cylindrical roller bearing, because it can not bear axial force, should be considered additionally;
5. High temperature: This is a possible cause of poor lubrication.
If there is any questions, please free to contact Tedin technical center.
E-mail: sales@tedin-bearing.com