D4 Carrier Roller Part Number 6K9880/3K7962/6K9879

The material of the carrier roller body is forged by 40Mn2. and the surface
heat treatment HRC 48-55 depth up to 5-8mm. Precision CNC machine machining
size is more accurate
The center shaft of the carrier roller material is 42CrMo and forged .The
hardness of surface heat treatment can reach 48-55HRC More wear-resisting .
Core hardness of HRC 28 or above is not easy to fracture. Tempering 180 degrees
before finishing. The surface of the center shaft of the carrier roller is
polished by CNC machine tool to make the shaft smoother.
High sealing aprons are used inside the carrier roller to prevent dirt, sand
and water from damaging it.
The carrier roller using friction welding technology welding quality is good
and stable, and environmental protection, no pollution.Welding process does not
produce smoke or harmful gas, no splash, no lone light and spark, no
radiation.Known as the green welding technology of the future.

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