What Is a Plain Bearing?

Sliding bearing A bearing that works under sliding friction. Sliding bearings work smoothly, reliably and without noise. Under the condition of liquid lubrication, the sliding surface is separated by the lubricating oil without direct contact, which can also greatly reduce friction loss and surface wear, and the oil film also has a certain ability to absorb vibration. However, the starting frictional resistance is large. The part of the shaft supported by the bearing is called the journal, and the part matching the journal is called the bearing bush. In order to improve the friction properties of the bearing pad surface, a layer of antifriction material cast on its inner surface is called a bearing bush. The materials of the bearing pads and bearing bushes are collectively called sliding bearing materials. Sliding bearing applications are generally under high-speed and light-load conditions.

Commonly used sliding bearing materials are

What happens when the plain bearing works is

1) Metal materials, such as

The domestic use of sliding bearing wear is generally

Damage type damage reason and treatment method

Overheated glued bearings, excessive loads, improper operation or malfunction of temperature control system

1. If the bearing is found to be overheating during movement, it should be stopped and inspected immediately. It is better to keep the rotor running at low speed, or continue to supply oil for a period of time, until the bearing pad cools down. Otherwise, the pasteurized alloy on the bearing pad is glued to the journal, which is troublesome to repair.

2, to prevent the lack of lubricant or impurities mixed in the oil, and misalignment of the rotor installation.

3, lighter damaged bearings can be used

1 GB / T14910-1994 Technical requirements for thick-walled multilayer bearing backings for plain bearings

2 GB / T16748-1997 sliding bearing metal bearing material compression test

3 GB / T18323-2001 Dimensions and tolerances of sintered sleeves for plain bearings

4 GB / T18324-2001 Copper alloy bushings for plain bearings

5 GB / T18325.1-2001 Fatigue strength of plain bearings in test machines and practical applications under conditions of hydrodynamic lubrication of plain bearings

6 GB / T18326-2001 Sliding bearings Metal multilayer materials for thin-walled sliding bearings

7 GB / T18327.1-2001 basic symbols for plain bearings

8 GB / T18329.1-2001 Ultrasonic non-destructive testing of the bonding strength of sliding metal multilayer bearings

9 GB / T18327.2-2001 plain bearing application symbol

10 GB / T18844-2002 Terms, characteristics and causes of sliding bearing damage and appearance change

11 GB / T21466.3-2008 Circular plain bearings with hydrodynamic radial journal bearings under steady state conditions-Part 3: Permissible operating parameters

12 GB / T21466.1-2008 Cylindrical plain bearings with hydrodynamic radial journal bearings under steady state conditions-Part 1: Calculation process

13 GB / T21466.2-2008 Hydrodynamic radial plain bearings, circular plain bearings under steady-state conditions-Part 2: Functions used in calculations

14 GB / T7308-2008 Plain bearings with flanges or flanges that cannot be thin-walled

15 GB / T10447-2008 Plain bearing semicircle thrust washer elements and tolerances

16 GB / T10446-2008 Plain bearing thrust washers dimensions and tolerances

17 GB / T2889.1-2008 Plain bearing terms, definitions and classifications Part 1: Design, bearing materials and their performance

18 GB / T23893-2009 Classification and marking of thermoplastic polymers for plain bearings

19 GB / T23895-2009 Sliding bearing quality assurance

20 GB / T18325.3-2009 Plain bearing bearing fatigue-Part 3: Flat belt test of metal multilayer bearing material

21 GB / T18325.2-2009 Fatigue of plain bearing bearings-Part 2: Cylindrical test specimens of metallic bearing materials

22 GB / T23896-2009 Failure Mode and Effect Analysis (FMEA) of Quality Assurance Design Phase of Thin-walled Bearings for Plain Bearings

23 GB / T18325.4-2009 Fatigue of plain bearing bearings. Part 4: Bearing tests on metal multilayer bearing materials

24 GB / T23894-2009 plain bearing copper alloy inlaid solid lubricating bearings

25 GB / T23892.2-2009 Sliding bearing fluid dynamic pressure tilting pad thrust bearing under steady state conditions Part 2: Calculation function of tilting pad thrust bearing

26 GB / T23892.1-2009 Sliding bearing fluid dynamic pressure tilting pad thrust bearing under steady state conditions Part 1: Calculation of tilting pad thrust bearing

27 GB / T23892.3-2009 Sliding bearing fluid dynamic pressure tilting pad thrust bearing under steady-state conditions Part 3: Allowable value calculated for tilting pad thrust bearing

28 GB / T23891.1-2009 Sliding bearing fluid dynamic pressure pad thrust bearing under steady-state conditions. Part 1: Calculation of pad thrust bearing

29 GB / T23891.2-2009 Sliding bearing fluid dynamic pressure pad thrust bearing under steady-state conditions Part 2: Calculation function of pad thrust bearing

30 GB / T23891.3-2009 Sliding bearing fluid dynamic pressure pad thrust bearings under steady-state conditions-Part 3: Allowable values calculated for pad thrust bearings

31 GB / T2889.4-2011 Terms, definitions and classification of plain bearings Part 4: Basic symbols

32 GB / T27939-2011 Quality control technology and inspection of geometrical and material quality characteristics of plain bearings

33 GB / T12613.6-2011 plain bearing rolled bushings-Part 6: Inspection of inner diameter

34 GB / T27938-2011 Plain bearing thrust washer failure damage terms, appearance characteristics and reasons

35 GB / T12613.1-2011 plain bearing rolled bushings Part 1: Dimensions

36 GB / T12613.2-2011 plain bearing rolled bushings-Part 2: Outer and inner diameter test data

37 GB / T12613.3-2011 plain bearing rolled bushings-Part 3: Lubrication holes, oil grooves and oil pockets

38 GB / T12613.4-2011 plain bearing rolled bushings-Part 4: Materials

39 GB / T12613.5-2011 plain bearing rolled bushings-Part 5: Outer diameter inspection

40 GB / T12613.7-2011 plain bearing rolled bushings-Part 7: Measurement of wall thickness of thin-walled bushings

41 GB / T2688-2012 Technical requirements for powder metallurgy bearings

42 GB / T28278.1-2012 Plain bearings. Hydrostatic radial plain bearings without oil return tank under steady state conditions. Part 1: Calculation of oil-lubricated radial plain bearings without oil return tank

43 GB / T28279.1-2012 Plain bearings. Hydrostatic radial plain bearings with oil return groove under steady state conditions. Part 1: Calculation of oil-lubricated radial plain bearings with oil return groove

44 GB / T28279.2-2012 Plain bearings. Hydrostatic radial plain bearings with oil return grooves under steady-state conditions. Part 2: Characteristic values calculated for oil-lubricated radial plain bearings with oil return grooves.

45 GB / T28278.2-2012 Plain bearings. Hydrostatic radial plain bearings without oil return groove under steady state conditions. Part 2: Characteristic values calculated for oil-lubricated radial plain bearings without oil return groove

46 GB / T28280-2012 Calculation of machine characteristics and process capabilities for quality characteristics of plain bearings

47 GB / T28281-2012 Statistical Process Control of Quality Characteristics of Plain Bearings (SPC)

48 GB / T10445-1989 Shaft diameter of plain bearing sleeve

49 GB / T12948-1991 Bimetal bond strength destructive test method for plain bearings

50 GB / T12949-1991 bimetallic bushings with plain bearings coated with friction reducing plastic

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