What Are Our Concerns About Bearings（15）

Q1:What is the type of bearing housing for bearing 6311?

A:6311 belongs to class 0 deep groove ball bearing, this kind of bearing has its suitability for general use should be the bearing room, there is no special matching bearing seat on this kind of bearing gb, Like UCF,UCP and other outer spherical bearing with seat has the corresponding type of bearing seat.  

Q2:What is the classification of bearings? What models do you have?

• A:Angular contact bearing: rolling bearing in which the nominal contact Angle between the ball and the ring is greater than 0° and less than 90°.  
• Outer spherical bearing: a centripetal rolling bearing having an outer sphere and a wide inner ring with a locking element.  Mainly used for simple enclosures.  

• Linear bearing: a rolling bearing in which two raceways have relative linear motion in the rolling direction.  

• Ball bearing: The rolling body is the rolling bearing of the ball.  

• Deep groove ball bearings: Centripetal ball bearings in which each ring has a continuous groove raceway with a cross section approximately one third of the circumference of the ball.  
• Thrust ball bearing: The rolling body is the thrust rolling bearing of the ball.  
• Roller bearing: A roller is a rolling bearing of rollers.  
• Cylindrical roller bearing: The rolling body is a cylindrical roller bearing.  
• Tapered roller bearing: the rolling body is a centripetal rolling bearing of tapered roller.  
• Needle roller bearing: The rolling body is a centripetal rolling bearing of needle roller.  
• Spherical roller bearing: The rolling body is a self-aligning centripetal rolling bearing with convex spherical or concave rollers.  A bearing with convex spherical rollers having a spherical raceway on the outer ring;  A bearing with concave rollers having a spherical raceway in the inner ring.  
• Thrust roller bearing: The roller is the thrust roller bearing of the roller.  
• Thrust cylindrical roller bearing: The roller is the thrust roller bearing of cylindrical roller.  
• Thrust tapered roller bearing: The rolling body is the thrust rolling bearing of tapered roller.  
• Thrust needle roller bearing: The rolling body is a thrust rolling bearing for needle rolling.  
• Thrust spherical roller bearing: the rolling body is a self-aligning thrust roller bearing with convex spherical or concave rollers.  The raceway of the bearing seat ring with convex spherical roller is spherical, and the raceway of the bearing shaft ring with concave spherical roller is spherical.  
• Seat bearing: An assembly of a centripetal bearing and seat with a base plate for mounting screws on a supporting surface parallel to the bearing axis line.  
• Joint bearing: spherical sliding contact surface, mainly suitable for swing motion, tilt motion and rotary motion spherical sliding bearing.  
• Combined bearing: a rolling bearing in a set of bearings combined by two or more of the above bearing structures at the same time.  Such as needle roller and thrust cylindrical roller combined bearings, needle roller and thrust ball combined bearings, needle roller and angular contact ball combined bearings, etc.  
• Other bearings: rolling bearings of other constructions other than those mentioned above.  
• Plain bearing: plain bearing has no inner and outer rings and no rolling body. It is generally made of wear-resistant materials.  It is usually used for low speed, heavy load, lubricating oil filling and mechanical rotating parts which are difficult to maintain.  

• 1200   7    1303 12.5     2208  24.2
• 1200K  7.8  1303K 13.2    2208K  30
• 1201   7.5  1304  14.2    2208-2RS  27.5
• 1201K  8.3  1304K  15     2209  29.5
• 1202    8   1305  15.8    2209K   32.7
• 1202K   8.4  1305K  16.7    2210 34.4
• 1203     9   1306 18.5      2210K  39.2
• 1203K   9.4   1306K  20     2211   41
• 1204    10    1307  22.7    2211K  47.8
• 1204K  10.5   1307K  24     2212   50.4
• 1205   10.5    1308  29    2212K   54.6
• 1205K  10.8    308K  30.5   2213   57.4
• 1206   13     1309  38.2    2213K  61.4
• 1206K  13.4    1309K  40   2214   64.5
• 1207   15     1310  46.3   2214K  21
• 1207K  15.5    1310K  48.6  2304  22
• 1208   18     1311  53.4    2304K  22.3
• 1208K  18.5   1311K  56.1    2305  23.4
• 1209  20.8    1312  63       2305K  24.5
• 1209K  21.6   1312K  66.1     2306  25.7
• 1210  23.2     1313  71.2     2306K  30.7
• 1210K  24.4    1313K  74.8    2307  32.3
• 1211  30       1314  88       2307K  40
• 1211K  31      1314K  92.5     2308  42
• 1212  36       2204  13.2      2308K  51.5
• 1212K 37       2204K  13.8      2309  54
• 1213  42      2204-2RS  17.2    2309K  64
• 1213K  44.1    2205   14.3       2310  67
• 1214  48       2205K  15.5     2310K  11.8
• 1214K  50.4    2205-2RS 18.6     2202  15.3
• 1215  55.2     2206    15      2202-2RS  12.5
• 1215K  58     2206K   16       2203  16.3
• 1216  61.8     2206-2RS 19.5    2203-2RS
• 1216K  64.9    2207   20
• 1217  69.6     2207K  21
• 1217K  73.1    2207-2RS  26

Q3:What is the new code name for seven types of bearing?

A:In GB / 273.1 2011 / ISO355:2007  

“General Scheme for Outline Dimensions of rolling bearings – Part 1: Tapered roller bearings”  

Among them, there are two kinds of bearings with close to 7815 size:  

• 1, width 43.00mm, size series: 2ED, contact Angle 13 degrees 03 minutes.  

• 2, width 42.00mm, size series: 5ED, contact Angle 20 degrees.  

Note: 7815 width dimension: 44.50mm  

In GB/T297 “Rolling Bearings tapered Roller Bearings (Single Row) External Dimensions” :  

Bearing model 7815 is not available, and bearing matching this size is included.  

In GB/T272 “Rolling bearing Belt good Method”, in JB/T2974-2004 “rolling bearing code Method supplementary provisions”, none of them are included.  

Q4:What kind of bearing is TIMKEN 53BIC247?  What are its features?  

A:Bearing type: 53BIC247  Inner Diameter (d): 136.525

Outer diameter (D): 190.5  width (B): 25.4

Quality (Kg): 2.6 

 TIMKEN53BIC247 Deep groove ball bearing is a commonly used rolling bearing.  Its structure is simple and easy to use.  It is mainly used to bear radial loads, but when the radial clearance of the bearing is increased, it has certain performance of angular contact ball bearings and can bear radial and axial combined loads.  

Q5:What do the letters and numbers on the bearing mean? Is it related to inner diameter, outer diameter and thickness?  

A:The letters and numbers on the bearings generally indicate the product model and manufacturer’s name.  You can check the standard inner and outer diameter and thickness according to the model, but some models are specified by customers, not necessarily the standard model.  

For example, 6203 2RS is the standard bearing model. You can refer to the standard to check the size and thickness of the inner and outer diameters.