1. The utility model relates to a squeeze head device for compressing a bearing in a bearing detecting device.

2. When the squeeze heads compress the bearing, the position of the squeeze heads can be automatically adjusted to guarantee each squeeze head pressure is equal.

3. Special vibrators are installed on the squeeze head to produce better blocks.

4. Compacting process and compacting effects of air impact molding machine with formed squeeze head for combined mould of green sand of motor housing casting were introduced.

5. A kind of new experimental molding machine, air impact experimental molding machine with formed squeeze head pushed by air fluid was designed and manufactured.