What is a 608 bearing?
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). 608 bearings are also the standard size for skateboard bearings.
What does DDU mean on bearings?
DDU = Seals on both sides. RS1 = Seal on one side. RSH = Seal on one side.
What is the meaning of NR in bearing?
N. Snap ring groove in the outer ring. NR. Snap ring groove in the outer ring, with snap ring.
What size are 608 bearings?
608 Ball Bearings 8X22X7mm Specifications & Dimensions
| Universal | 608 |
|---|---|
| Inner Dimension d(Ø) | 8 |
| Outer Dimension D(Ø) | 22 |
| Width B (or T)(mm) | 7 |
| Retainer Type | Punching |
What is the difference between 2RS and ZZ bearings?
Type 2 RS is a sealing type with a moulded rubber seal on both sides. Type 2 Z or ZZ is a non-removable, non-contact bearing closure with a metal seal on both sides. This type of seal doesn’t make contact with the inner ring therefore, there would be no impact on the operational speed.
Which bearing is used for high speed?
Silicon nitride is a ceramic material with the chemical formula Si3N4 and is today the ceramic material most commonly used for rolling bearings for both technical and economical reasons. Bearings with only the rolling elements made of ceramics are mainly used for high speed applications.
What does ZZ mean on a bearing?
Suffix
| 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. |
| Z | Bearing with a metal seal on one side, one side open. |
| E | Reinforced Design |
What does 2RS mean on a bearing?
2 rubber seals
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.
What does ZZ mean on bearings?
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.
What does C mean on a bearing?
The C code of the bearing indicates how much internal clearance the bearing gets in the machine.
What is a 608 2RS bearing?
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 size is a 6205 bearing?
6205 Ball Bearings 25X52X15mm Specifications & Dimensions
| Universal | 6205 |
|---|---|
| Inner Dimension d(Ø) | 25 |
| Outer Dimension D(Ø) | 52 |
| Width B (or T)(mm) | 15 |
| Retainer Type | Punching |