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Sealed clean type four row tapered roller bearings, four row tapered roller bearings are installed seals at both ends and the middle, they are new type of bearing products, relatively to the ordinary type four row tapered roller bearing has the following features:
- Had greatly reduced the use amount of grease
- can prolong remove cleaning cycle, reduce maintenance costs
- can talk around mill and roller room environment
- can prevent sundry interfuse caused an accident
- can prevent water, extend bearing life
- bearing capacity and thinking about the tapered roller bearings equal
Bearing the use of sealing ring can be divided into two basic types of chip and 4 chip, and seal clean tapered roller bearing and does not need to supplement the characteristics of grease, but harsh conditions for running condition operation consideration, also have on the outer race with lubrication groove and lubrication hole can add grease design, it is more suitable for oil and gas lubrication.
Bearing in addition to tolerance code outside, still marked with each group of bearing general product Numbers and said with the order with code, product Numbers used to place all kinds of bearing at assembly chaos, with code, said all parts in bearing inner position, once the parts assembly errors, can cause clearance is too small, cause sintering, or too big and occupy bearing area, leading to the bearing fatigue life shorten, so when installation should pay attention to all parts of the installation position, in support of outer circumferential uniform four o 'clock, and marked with bearing position code, in order to make the bearing long service life, in every time after removal to assembly, outer will stagger 90 degrees, transform bearing the position is used.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7201CDF NSK | 12 | 32 | 10 |
| 7201BDF NSK | 12 | 32 | 10 |