Centrifugal Casting & Rebabbitting
Fusion Babbitting is a leader in babbitt bearing repair in the U.S. Our centrifugal casting process allows us to restore babbitt bearings back to their original OEM specifications. Combining centrifugal force and rapid cooling, we can ensure the new babbitt is poured free of impurities and imperfections, resulting in the highest-quality bond strength & bearing integrity as well as extended bearing life. To validate the quality of your repaired bearing, we will provide you with an Ultrasonic Bond Certificate. We are proud to serve industries whose operations rely on turbines, pumps, motors, fans, and other industrial equipment.
Why Choose Centrifugal Casting
Process
Our centrifugal casting process involves spinning a bearing at the proper RPM to create a centrifugal force that allows molten Babbitt to be poured under pressure. The bearing is then rapidly cooled. This process ensures that the poured babbitt is free of impurities, gasses, or imperfections. We will perform dye penetrant testing and provide an ultrasonic bond certification to prove quality.
Capabilities
We employ two centrifugal spin casting machines. The larger spinner can cast a bearing with an outside diameter of 72″ and up to 7000 lbs. Our smaller spinner can cast a bearing with an outside diameter of 36″ and up to 1500lbs. The size, mass, and configuration of your bearing will determine which machine we use.
Benefits
Centrifugal casting is a reliable bearing rebabbitting service. The process used ensures the best bond strength & bearing integrity; extending the life of your bearing.
Our facility also maintains an inventory of certified babbitt, allowing us to match any OEM specification of babbitt that your bearing would require.
Standard Babbitt Specifications
| BABBITT SPEC. NO. | TIN % | COPPER % | ANTIMONY % | LEAD % | ARSENIC % |
|---|---|---|---|---|---|
| ASTM B23 – 49 GR.1 | 90 – 92 | 4 – 5 | 4 – 5 | .35 max | .10 max |
| ASTM B23 – 49 GR.2 | 88 – 90 | 3 – 4 | 7 – 8 | .35 max | .10 max |
| ASTM B23 – 49 GR.3 | 83 – 85 | 7.5 – 8.5 | 7.5 – 8.5 | .35 max | .10 max |
| SAE 11 | 86 – 88 | 5 – 6 | 6 – 7 | .35 max | .10 max |
| SAE 12 | 88 – 90 | 3 – 4 | 7.25 – 7.50 | .35 max | .10 max |
| QQT-390 GR.2 | 88 – 90 | 4 – 5 | 7 – 8 | .35 max | .10 max |
| QQT-390 GR.3 | 83 – 85 | 7.5 – 8.5 | 7.5 – 8.5 | .35 max | .10 max |
| ACM-3021 | 88 – 90 | 3 – 4 | 7 – 8 | .05 max | .01 max |
| ACM-3022 | 82.5 – 84.5 | 5 – 6 | 10 – 12 | .50 max | .10 max |
Quality of Bond
Fusion Babbitting procedures ensure the highest Quality Bond in the industry 98-100% mechanically and chemically. We will provide Ultrasonic Bond Certifications to validate bearing quality.
