Our Needle Roller Bearing 9.525*14.2875*7.94 Mm Steel Cage, Pillow Blocks Bearing Ucp205 Ucp 206, 21315 Chrome Steel Spherical Roller Bearing has undergone rigorous performance testing and repeated field testing, which ensures its good quality and stable performance. Teamwork is encouraged at all levels with regular campaigns. 80% of our products exported to many international markets.
Features and structural forms of four-row cylindrical roller bearings:
Four-row cylindrical roller bearings are widely used in various rolling mill roll support bearings used in the metallurgical rolling industry, non-ferrous metals and rubber and plastic rolling industries.
The main features and structural forms of this bearing are:
1. Main features of bearings
a. The bearing has the maximum rated dynamic load value in the limited installation space, and can be used for high-speed and high-precision rolling;
b. The bearing is allowed to have a more precise limit tolerance;
c. The inner ring is allowed to be assembled interchangeably with the outer components (outer ring, complete set of rollers), which facilitates quick roll change.
2. The structural form of the bearing
FC type: two outer rings with ribs, integral inner ring and comb cage, cylindrical rollers;
FCD type: two outer rings with ribs, two inner rings and comb cages, cylindrical rollers;
FCDP type: two outer rings without outer ribs, two inner rings, two outer retaining rings, one intermediate retaining ring, hollow rollers, pin type cage.
Rolling mill bearing four row cylindrical roller bearing FC3246168
Properties of Four Row Cylindrical Roller Bearings for Rolling Mills
FC type
Belonging to separable bearings, the integral inner ring can be separated from the whole set of bearings, with high limit speed and interchangeability. The cage is a machined brass cage. Such bearings must first be suitable for high-speed (35m/S) rotation. Carrying capacity is secondary.
Generally, four-row cylindrical bearings with an inner diameter of 80mm<260mm are designed as secondary structures. It is mainly used in the working roll position of cold rolling four-high, six-high and twelve-high rolling mills.
FCD type
It is a separable bearing, and the degree of separability is worse than that of the FCDP structure. Only the two inner rings can be separated from the whole set of bearings, but it has a higher limit speed and interchangeability. Cages are machined brass or steel cages.
This type of bearing is not only suitable for high speed (35m/S) but also can bear heavy load at the same time. Generally, four-row cylindrical bearings with an inner diameter of 260mm<400mm are designed as secondary structures. It is mostly used in profile finishing mills and high-speed wire rod rough rolling, intermediate rolling, and pre-finishing parts, including backup rolls, intermediate rolls, and work rolls of cold-rolled non-ferrous and ferrous metal mills below 950.
FCDP type
Typical rolling mill roll bearings, the parts can be separated from each other, and the positions can be exchanged with high precision. It is very convenient to install, disassemble and clean. Mocha coefficient. Therefore, it is suitable for the roll diameter of rolling mills with high speed, heavy load and harsh working environment.
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