This 608-2RS miniature ball bearing is made of chrome steel and has rubber seals. It has an 8 mm inside diameter, a 22 mm outside diameter, and a 7 mm depth. ... This deep groove ball bearing is used in applications such as skateboards and rollerblades, among others.
What does RS mean on a bearing?
rubber seal
What is the difference between 608ZZ and 608RS bearings?
What is the difference between 608RS and 608ZZ bearings? - Quora. Those two letters on the end represent the shield or seal type, zz is a steel shield and rs is a rubber shield.
What is the difference between 608Z and 608ZZ bearings?
608z is single shielded and 608zz is double shielded. Same bearing other than that.
What does 608 mean for bearings?
The standard inline skates bearings have the designation "608". The "608" means that the bearings are from the 600 series, with a 8mm inner diameter (the width of the hole, i.e., internal bore).May 2, 1992
What do the letters and numbers mean on a bearing?
The number and letter combinations have the following meaning: The first digit or letter or combination of letters identifies the bearing type and eventually a basic variant. ... The first digit indicates the width or height series (dimensions B, T or H). The second digit identifies the diameter series (dimension D).
Which is faster ABEC 7 or 9?
ABEC includes five tolerances classes: 1, 3, 5, 7, and 9 with 1 being the widest and 9 the tightest. Thus, bearings with a higher ABEC rating have tighter tolerances, and that means better precision, higher efficiency, and the potential to accommodate applications requiring high speeds.Aug 24, 2015
What are the fastest bearings?
The Bones Swiss 608 Skate Bearings have become legendary since their introduction in 1983. For decades, this has been perhaps the fastest, smoothest and longest lasting bearing on the market.
Is ABEC 7 or 5 better?
ABEC 5 bearings are cheaper than ABEC 7. ABEC 5 bearings allow for lesser friction while ABEC 7 bearings almost give the skater a 'frictionless' cruise. ABEC 7 bearings are manufactured with stricter tolerance and are more precise than ABEC 5 bearings.
What is the highest ABEC?
The ABEC rating system includes grades 1,3,5,7, and 9. The higher the ABEC rating, the tighter the tolerances are, making the bearing a more precision part. High precision and small tolerances are required for bearings to function at very high RPM, in products like high speed routers that must spin at 20 to 30,000 RPM.
What do you use bearings for?
Bearings are "parts that assist objects' rotation". They support the shaft that rotates inside the machinery. Machines that use bearings include automobiles, airplanes, electric generators and so on.Jun 13, 2019
What are ball bearings used for what's their purpose?
A ball bearing is a type of rolling-element bearing that serves three main functions while it facilitates motion: it carries loads, reduces friction and positions moving machine parts. Ball bearings use balls to separate two “races,” or bearing rings, to reduce surface contact and friction across moving planes.