Q1:How To Divide Bearing Type?

A:The last two parts of the bearing model represent the inner diameter size, the inner diameter of the bearing above 03 is the last two parts times 5, such as 6306 inner diameter 30mm, 7210 inner diameter 50mm, 03 below does not conform to the above law, 00 inner diameter 10mm, 01 inner diameter 12mm, 02 inner diameter 15mm, 03 inner diameter 17mm. The third from the bottom of the model represents the series of the bearing. In the case of the same inner diameter, the third from the bottom of the model increases from 1,2,3,4 to increase the outer diameter and thickness of the bearing accordingly. For example, 106,206,306,406, the inner diameter is 30mm, the outer diameter increases and the thickness increases, and the bearing load increases, but the speed decreases.

Q2:Meaning Of Bearing 6004RS Model

A:6: Represents deep groove ball bearing
0: Width series code
04: Inner diameter size code, indicating that the inner diameter is 4×5 = 20mm
RS: Represents the bearing side with skeleton rubber seal ring (non-contact type)

Q3:High Temperature Bearing And Ordinary Bearing Model Is The Same?

A:There is a difference between the type of high temperature bearing and ordinary bearing. There are two general situations:

1. Bearing parts made of bearing steel after high temperature tempering treatment, the subsequent code according to the provisions of JB/T2974 (parts after high temperature tempering treatment, working temperature up to 150C°, its code is /S0; Parts after high temperature tempering treatment, the working temperature up to 200°C, its code is /S1; Parts after high temperature tempering treatment, the working temperature up to 250°C, its code is /S2; Parts after high temperature tempering treatment, the working temperature up to 300°C, its code is /S3; The parts are tempering at high temperature up to 350°C, and the code is /S4).
2. The bearing parts are made of heat-resistant steel, and the subsequent code is in accordance with JB/T2974 (the material is Cr4Mo4V, and the subsequent code is /HN; The material is Cr14Mo4, and the subsequent code is /HN1; The material is Cr15Mo4V, and the subsequent code is /HN2; The material is W18Cr4V, followed by /HN3).

Q4:What Is The Difference Between Z And Z Z In The Bearing Model?

A:Z means iron cover

ZZ indicates that there are iron covers on both sides

Q5:Several Clearances Of Rolling Bearings?

A:Bearing factory according to some national or international standards, there is a constant clearance value.

There are several radial internal clearance codes:

C0: Standard clearance code, this code is generally omitted in the bearing model without marking.

C2: A slightly smaller clearance than the standard clearance.

C3: A gap slightly larger than the standard gap.

C4: A slightly larger gap than C3.

C5: A gap slightly larger than that of C4.

When installing bearings, the coordination of bearings and shafts, bearings and bearing chambers will reduce the clearance of bearings to a certain extent. There’s going to be a gap.

In the process of use, when the bearing rotates, the temperature difference of the material value will also reduce the internal clearance of the bearing.

Bearing to achieve the most ideal life, must have a suitable clearance, clearance value = design clearance (factory clearance) – inner ring with clearance reduction – outer ring with clearance reduction plus or minus due to temperature difference caused by clearance reduction or increase.

Q6:Classification Of UCT Bearings?

A:UCT: outer spherical bearing with seat.
Example: Overall model: UCT208. Individual outer spherical bearing model: UC208. Individual Bearing block model: T208
08: Inner diameter code. The inner diameter of the bearing is 08×5=40mm
2: Outer diameter code. Indicates that the outer diameter of the bearing is 2 series.
T: Bearing housing code. Slide block seat.
UC: Outer spherical bearing shape code. Outer spherical bearing with top wire.