Babbitt Bearing Repair and Manufacturing
The leader in "Peace of Mind - No Hassle Service"
Top Quality - Outstanding Service
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The leader in "Peace of Mind - No Hassle Service" Top Quality - Outstanding Service
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 | Tin based Babbitt (#2) is approximately 89% tin with the remainder being antimony and copper. The hardness of this alloy gives excellent load-carrying characteristics. |
| Lead based Babbitt (#7) is 75% or more lead. Conventional lead- base babbitt contains antimony and tin, which greatly increase the strength and hardness of lead. This alloy is fully adequate for lower loads and moderate temperatures. |
| Some 6 other types are available to address specific needs. See our chart on "types of babbitt" |
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The material creeps or flows slightly under load in the initial stages of running. |
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This permits the shaft and bearing contours to conform with each other or to compensate for non-uniform loading present from misalignment. |
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Under poor lubricating conditions, an alloy of good conformity and run-in behavior is required. |
Characteristics
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Tin-base babbitt shows low friction resistance, low wear, good run-in properties and good emergency behavior in the absence of adequate lubrication. |
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Lead-based babbitt's good frictional properties and reasonably good corrosion resistance makes them ideal for a wide range of applications |
Thermal Conductivity
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Babbitt has high thermal conductivity which is required to absorb and carry away generated heat. When frictional heat generated in bearings is removed, local hot spot seizures caused by roughness or foreign particles, are prevented. |
Compatibility
| Babbitt is extremely compatible with shaft materials. It resists seizing or galling under conditions of metal to metal contact at start up. |
Other information
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Babbitt has good load carrying capacity between 800 PSI and 1500 PSI |
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Maximum operating temperature for Babbitt is 300º F. In motors 180º F to 190º F is considered running hot. Some turbine applications run as high as 225° F. Many technicians however, will set the alarm at 185º F and trip at 205º F. |
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Melting temperature for common Babbitt varies from 350º F to 475º F |
| Special bonding techniques are required to metallurgically bond Babbitt to metal |
Send mail to
aps@babbittrepair.com with
questions or comments about this web site.
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