Bearing Babbitt Melting Temperature 1

[jamesjm]

On average, what is the melting temperature of the babbitt on a journal or tilt-pad thrust bearing?

 

[JJPellin]

I have never measured it. It may vary depending on the particular babbit metal used. But I have always used 350 °F as the expected melting temperature. However, I would never deliberately run a babbit bearing at an operating temperature above 250 °F.

 

[unclesyd]

The melting point for common babbit is 462°F. This is for the lead/tin and tin/lead babbits.

 

[metengr]

The common tin-base and lead-base babbits are specified in ASTM B23. For high performance rotating equipment,tin-base is the choice, and the lead should be specified as low as possible.

For ASTM B23, Babbit types /melting temperature deg F
1 433
3 464
4 363
5 358
7 464
10 468
11 471
12 473
16 471
19 462