Oilless Bearings

oilless bronze bearing
  • oilless bronze bearing

Oilless Bearings

Oiles Bearings Composition

Oilless Bearings can be divided into steel plate + copper layer + PTFE oil-free self-lubricating bearings, single-layer metal oil-free self-lubricating bearings, bimetallic oil-free self-lubricating bearings, solid inlaid oil-free self-lubricating bearings, etc.


 



Commonly used Oilless Bearings materials are bearing alloys (also called babbitt alloys or white alloys).

Oilless Bearings materials can be divided into cast iron, copper-based and aluminum-based alloys, powder metallurgy materials, plastics, rubber, hardwood and carbon-graphite, polytetrafluoroethylene (Teflon, PTFE), modified polyoxymethylene ( POM), and so on.
 

STATIC 250N/mm2 temperature -100℃~+300℃   

slow running test

100N/mm2

lubricating grease

0.3m/s
pv value

1.65N/mm2.m/s   

Thermal conductive

60W(m.k)-1

linear expansivity

19*10-6K-1

hardness

HB>20

Tensile Strength

750N/mm2

extensibility

12%


During use, the solid lubricant is rubbed with the shaft through frictional heat to form an excellent condition for the coexistence of oil and powder lubrication, which not only protects the shaft from wear but also makes the solid lubrication properties eternal. Its hardness is twice as high as that of ordinary copper sleeves, and its wear resistance is also twice as high.

Optional materials and corresponding technical indicators

ITEM NO

1

2

3

4

5

Bulk Material

CuZn24Al6

CuSn6Zn6Pb3

CuSn6Zn6Pb3

HT-250

GCr15

Matrix hardness

Hb230(Hb270)

HB 90

HB 80

HB 210

HB 60

friction coefficient

<0.16

<0.15

<0.14

<0.17

<0.17

maximun emperature

300℃

350℃

300℃

400℃

350℃

Ultimate dynamic load

100 N/mm2

60 N/mm2

70 N/mm2

60 N/mm2

250 N/mm2

lm/mimUltimate dynamic load

25 N/mm2

15 N/mm2

20 N/mm2

15 N/mm2

70 N/mm2

Use limit PV values

3.8N/mm2·m/s

0.5 N/mm2·m/s

0.6 N/mm2·m/s

0.8 N/mm2·m/s

2.5 N/mm2·m/s

Related Products you may be interested!

Send Your Message