Gearbox casing problems

1. Low Production yield

1.1. High number of castings cracking

1.2. Machining tolerance issues

2. Excessive lead-time

3. Machining Supplier no longer accepting new orders

4. High production costs

4.1. Low life of casting patterns

5. Quality

5.1. Castings

5.1.1. Poor finish

5.1.2. Significant material to be machined off

5.2. Machining

5.2.1. Material movement

5.2.2. Tolerances considered to be too tight

5.2.3. High quantity of concessions