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Raw Material:                                                                               
Roller pipe using Guanghuan ERW pipe, and the roller shaft using cold drag shaft . The pipe and the shaft are special used for Conveyor roller . The tolerance of shaft insure in -0.01mm to +0.01mm in order to install the bearing.

Material Cutting:

Auto pipe cutting equipment and shaft cutting ensure the length are the same.  

Pipe Boring:
Both end boring equipment ensures the bearing house concentric . 
Shaft Flat Milling:
The import dimension of the roller is the flat distance, we use the four milling cutter to mill at the same time , so the distance of flat are the same .

Bearing & Sealing Press:
Both end pressing equipment to press the bearing and sealing at the same time , and the pressure sameness, so the roller tu unimpeded .

Inspection:

After the bearing house welding , we use the special equipment to test.