Machining is a crucial stage in mirror roller manufacturing, mainly involving rough machining, semi-finishing, and finishing. For high-precision mirror rollers, the permissible error is typically within the range of 0.01–0.03 mm.

The machining parameters of Jinhang, a high-quality industrial roller manufacturer in China, are as follows: • Maximum machined outer diameter: 2000 mm • Maximum machined length: 8000 mm • Maximum mirror roller surface roughness: RA 0.005 μm • Maximum overall accuracy (coaxiality / circular runout): 0.002 mm