Machining Oilite Bronze

 The machining of Oilite bronze should not cause any issues as long as a few basic principals are followed.

- The sliding surface of a bearing should only be machined when absolutely necessary. Any machining will affect        the surface porosity and could affect performance. 

-  The bearing surface should never be ground as grinding will smear pores closed.

-  Tooling should be kept as sharp as possible 

 For final turning diamond or carbide tips, quality ISO K 20, with tips radius 0.2mm max are recommended. 

 Recommended cutting speeds: 100-200m/min

Turning rake angle: 5^o

Turning relief angle: 5^o

   - After any machining parts must be cleaned thoroughly to remove any debris. Any debris left on the bearing               surface could have a major impact on bearing life.

   - Bearings will normally lose some oil when they are machined. To replace lost oil, immerse the bearing in SAE 30 Oil and heat to 80^oC  (176^oF) and allow to cool while submerged.

   - To check bearing pores are still open after machining place bearings on an electrical hot plate and check that       the oil oozes out.