F 699 2RS - ZEN Deep Groove Bearing - 9x20x6 (2024)

FAQs

What does 2RS mean on a bearing? ›

The 2RS stands for 2 rubber seals. One on each side of the bearing. So the RS denotes only one side is sealed with a rubber seal and the other is exposed and not sealed. The rubber seal is simply a rubber coating placed over a metal cover to assist in preventing contaminates from entering the bearing.

2 RS - Bearing with rubber seal on both sides. RS provides a better seal but more rolling friction than 2Z. RS - Bearing with rubber seal on one side, one side open. 2 Z / ZZ - Bearing with a metal seal on both sides.

The first digit indicates the width or height series (dimensions B, T or H). The second digit identifies the diameter series (dimension D). The last two digits of the basic designation identify the size code of the bearing bore. The size code multiplied by 5 gives the bore diameter (d) in mm.

608zz is the bearing used in skateboarding, it has two metal rings on both side. Downside of this is, it's a bit tough to clean this one's when they get dirty. 608RS/6082RS: These are the same bearings but shielded with a rubber ring rather than a metal ring.

ZEN Bearings is well known for the durability and reliability of its bearings. For over 50 years, the high quality of their products has helped millions of customers reduce maintenance costs and improve performance.

RS - Bearing with rubber seal on one side, one side open. 2 Z / ZZ - Bearing with a metal seal on both sides. Z - Bearing with a metal seal on one side, one side open. E - Reinforced Design.

Sealed bearings, such as 2RS and ZZ, are pre-filled with grease. In principle, you won't need to re-grease them, except for bearing units.

Metal Shielded Bearings are often used instead of Rubber Seals due to their speed capabilities. However, compared to Rubber Seals, they are not as good at protecting against moisture and fine dust, so this is something to consider when deciding whether Metal Shielded Bearings are the best option for your application.

ZZ is the code used for sealed bearings, which belongs to the post code in the bearing code. The seal of the bearing indicated by ZZ is a double-sided seal with a dust cover. The material of the seal cover is a steel plate.

Determining the size of a ball bearing can be done by measuring its outer diameter (OD), bore size (ID), and width. These measurements are usually expressed in millimetres (mm). Using a calliper or a micrometer, you can accurately measure these dimensions.

How do I calculate bearing size? ›

Measuring your bearing: Most bearings are measured in three ways, the inside diameter or (ID), the outside diameter or (OD) and the width or (W). It is important to note that our bearing measurements are all done in the following order: Inside diameter (ID) x Outside diameter (OD) x Width (W).

A bearing number is composed of a basic number and a supplementary code, denoting bearing specifications including bearing type, boundary dimensions, running accuracy, and internal clearance.

2RS give a bit more protection against humidity and dirt from outside, but have a little bit more friction than 2Z. The 2Z seals main function is to keep the grease inside the bearing.

"ZZ" Metal Shields.

We would only recommend 608ZZ metal shielded bearings to skaters on a budget who don't skate in the wet and are happy to buy new bearings instead of cleaning them. "ZZ" denotes two shields per bearing. Almost all metal shielded bearings have two shields.

NiTi Alloy Ball Bearings | T2 Portal.

Nomenclature Designations

RS or 2RS: These designations denote a rubber contact seal. RS typically indicates a single rubber seal on one side of the bearing, while 2RS indicates rubber seals on both sides, providing better protection against contaminants.

The 2RS sealed version provides for the completion of the aforementioned geometry by closing the bearing with NBR contact seals which, beside containing the dedicated grease previously inserted inside the bearing, make it possible to reduce the risk of entry of solid particles which could alter the conditions for ...

Bearings with suffix 2RS are sealed on both sides with plastic. The additional suffix letter into the 2RS, in other words 1, 2, H, R, etc. is manufacturer-specific. 2RS2 and 2RSH bearings have an improved dual-lip seal, however.

2RS literally means “2 Rubber Seals”. Enduro Bearings manufactures special seals designated “LLB” and “LLU” for most bearing assemblies. These designations indicate a mating groove on the inner race where two sealing lips make light contact (LLB) or medium contact (LLU).