What Are Our Concerns About Bearings（14）

Q1:SKF 6206-2z bearing, why is the bearing model 6206-2Z, then what is the meaning of 6206-2Z?  

A:6 represents the type code of deep groove ball bearing, 2 is the size series code “02”, and “0” is the width series code (omitted).  “2” is the diameter series code;  06 is the inner diameter code, indicating that the inner diameter of the bearing is 06×5=30mm;  2Z should be ZZ for metal dust caps on both sides.  

Q2:Cylindrical bearing model 2322, what is the roller size?

A:Diameter 32, length 32, 14, car solid cage.

Q3:What type of bearing is bearing 210311?

A:The shape is class 0, 6309 and 6311 deep groove ball bearings, inner diameter with taper inner diameter 55mm/57mm.

Q4:Inner diameter 38, outer diameter 30 and height 24, what type of needle roller bearing is it?

A:Inner diameter 38, outer diameter 30 and height 24, non-standard.

And needle roller bearings with inner ring and no inner ring.

Q5:What are the dimensions of bearing type 61918?

A:6 — Deep groove ball bearing, 19 — size series, 18 — means the inner diameter is 18×5, that is, 90mm.

The external dimensions of the 61918 are: inner diameter 90mm, outer diameter 125mm, width 18mm.

Q6:What are the dimensions of inner diameter and outer diameter and thickness of deep groove ball bearing model 1633?

A:Outer diameter 44.45, inner diameter 15.88, thickness 12.7.

Q7:What is the clearance of C4 in double row full loaded cylindrical roller bearings?

A:Double row full cylindrical roller bearings only:

Inner diameter 0 ~ 30mm (inclusive), C4 clearance is 50 ~ 75um;

Inner diameter 30 ~ 40mm (inclusive), C4 clearance is 60 ~ 85um;

Inner diameter 40 ~ 50mm (inclusive), C4 clearance is 70 ~ 100um;

Inner diameter 50 ~ 65mm (inclusive), C4 clearance is 80 ~ 110um;

Inner diameter 65 ~ 80mm (inclusive), C4 clearance is 90 ~ 125um;

Inner diameter 80 ~ 100mm (included), C4 clearance is 105 ~ 140um;

Inner diameter 100 ~ 120mm (inclusive), C4 clearance is 125 ~ 165um;

Inner diameter 120 ~ 140mm (included), C4 clearance is 145 ~ 190um;

Inner diameter 140 ~ 160mm (inclusive), C4 clearance is 165 ~ 215um;

Inner diameter 160 ~ 180mm (inclusive), C4 clearance is 220 ~ 250um;

Q8:What are the models of fully loaded cylindrical roller bearings?

A:Cylindrical roller bearings are usually composed of two guard edges, retainers, rollers and rings of a bearing ring. They are generally separable bearings. This kind of bearing is convenient to install and disassemble, especially when the inner and outer rings are required to have interference fit with the shaft and shell. Such bearings are generally only used to bear radial load, and only the inner and outer ring single row bearings with fenders can bear smaller axial load or larger intermittent axial load. Compared with deep groove ball bearings of the same size, this kind of bearing has a larger radial load capacity, from the structure, is also suitable for high-speed rotation.

Q9:What brand is good for bearings?

A:If the demand is high, you can use Japanese brands, NSK, KOYO, NTN;  Sweden’s SKF.

If the requirements are not high, you can choose domestic, ha bearing, Luo yang bearing, tile shop bearing, etc.

Q10:What are the parameters of humanistic bearing 6206Z?

A:Bearing 6206Z is a deep groove ball bearing with a dust proof cover.  

Inside diameter: 30 mm.  

Outer diameter: 62mm.  

Thickness: 16 mm . 

Q11:What type of bearing is 206?

A:2 — represents the size series (02) code, 06 — represents the id code, and should be preceded by a type code.  There is no type code for 206 bearings.  The following is an example:  

1, 6206: Deep groove ball bearings (common)  

Inside diameter: 30  

Outer diameter: 62  

Width (thickness) : 16  

Rated dynamic load: 14.96KN  

Rated static load: 10.04 (KN)  

Limit speed:  

Oil lubrication: 13000 (r/min, r/min)  

Grease lubrication: 9500 (r/min, r/min)  

2, 1206: double row self-aligning ball bearing  

Inside diameter: 30  

Outer diameter: 62  

Width (thickness) : 16  

Rated dynamic load: 1230 (KN)  

Rated static load: 590 (KN)  

Limit speed:  

Oil lubrication: 9500 (r/min, r/min)  

Grease lubrication: 7500 (r/min, r/min)  

3, 2206: cylindrical roller bearing  

Inside diameter: 30  

Outer diameter: 62  

Width (thickness) : 16  

Rated dynamic load: 18.08 (KN)  

Rated static load: 11.40 (KN)  

Limit speed:  

Oil lubrication: 11000 (r/min, r/min)  

Grease lubrication: 8500 (r/min, r/min)  

4, 7206E: tapered roller bearing (common)  

Inside diameter: 30  

Outer diameter: 62  

Width (thickness) of outer circle: 14  

Total width (thickness) : 17.25  

Rated dynamic load: 41.24 (KN)  

Rated static load: 29.57 (KN)  

Limit speed:  

Oil lubrication: 7500 (r/min, r/min)  

Grease lubrication: 6000 (r/min, r/min)  

Q12:Deep groove ball bearings, what is the size tolerance of inner diameter and outer diameter?

A:Deep groove ball bearings are centripetal bearings.  Under normal circumstances, the upper difference of bearing inner and outer diameter tolerance is 0, and the lower difference is a negative value.  Such as deep groove ball bearing 6206, inner hole diameter is 30mm, the deviation is 0~-0.01mm;  The outer diameter of the bearing is 62mm, and the deviation is 0~-0.013mm. The specific bearing tolerance is determined according to the basic dimensions of the precision grade of the bearing according to the standard.  

Q13:Deep groove ball bearing 206, what is meant 206?

A:206 is the old type of the bearing, refers to the outer diameter of 62mm,  

Such as:  

Description: Deep groove ball bearing (60000 type) Bearing type: deep groove ball bearing  

New model: 6206 Old model: 206  

Brand: TORRINGTONFAFNIR Reference model: 206K  

Inside diameter: 30 Outside diameter: 62  

Q14:What are the bearings of 62*30*16 size?

A:62*30*16 bearings include: deep groove ball 6206, aligning ball 1206, cylindrical roller N206, NF206, NU206, NJ206, NUP206, angular contact 7206, tapered roller 30206

Q15:What are the common four wheel tractor bearing models?

A:6211.6204.6305.6206.6205.7206.7205.7304 these are commonly used.

Q16:What is the type of rolling bearing with an outer diameter of 62m and an inner diameter of 30m?

A:The dimensions of deep groove ball bearings are: inner diameter 30mm* outer diameter 62mm* thickness 16mm.

Q17:Where are the sales volumes of deep groove ball bearings in the world, and which are the several bearing models with high sales volume?  

A:Henan, Xinxiang, changyuan, roller used, a large amount6205, 6206, etc.  

Q18:What is the type of wuling Light 6376E3 package bearing?

A:Bearing models 6207 and 6206.

Q19:What kind of bearings are used inside the wheels?

A：Deep groove ball bearings are used, the bearing type is determined by the size of the inner hole of the wheel, generally 6205-ZZ or 6206-ZZ.