What is difference between ZZ and 2Z bearing?

What is difference between ZZ and 2Z bearing?

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.

What is the difference between 2Z and C3 bearings?

The 2Z suffix indicates that the bearing has a steel seal on both sides. The bearings are filled with a high-quality grease and are lubricated for life. The C3 in the product name means that this bearing has a higher (internal) clearance than normal. The C3 clearance is most frequently used for this type of bearings.

How many balls are in a 6203 bearing?

6203 Ball Bearings 17X40X12mm Specifications & Dimensions

Universal	6203
Outer Dimension D(Ø)	40
Width B (or T)(mm)	12
Retainer Type	Punching
Load Direction	Radial

What does Lu mean on a bearing?

Seal on
LU = Seal on one side. DU = Seal on one side. Double row deep groove ball bearings have higher radial load ratings than single row bearings & a very rigid bearing support. The older pressed steel cage design have filling slots in one face & therefore, is less suitable for axial loads in this direction.

What does Llu mean on a bearing?

Double-lip contact rubber seal
LU, LLU: Double-lip contact rubber seal.

What does C3 in a bearing designation refer to?

Internal clearance being C3 means that the bearing has room for expansion if needed between the races of the bearing, whilst holding the outer ring and moving the inner ring in a radial movement you will detect a little amount of play between the two rings. C3 means the bearing has more clearance than standard.

What is 6203 2RS ball bearing?

DIMENSIONS

d	17 mm	Bore diameter
B	12 mm	Width
d2	≈ 21.75 mm	Recess diameter
D2	≈ 34.98 mm	Recess diameter
r1,2	min. 0.6 mm	Chamfer dimension