Heat treated shaft for linear motion is very important part in robot or orecusuib automation device as its quality greatly effects on the precision of the machinery. The 5 main qualiry factors, hardness, surface smoothness, roundness, straightness, and cylindericity are directly connected with the positioning, running precision, noise level and life span of the machinery.

SUJ-2
This high carbon chrome bearing steel is very good for high frequency treatment to get the enough hardness and abrasion resistance when it is used with LM ball bush. It makes plasticity and cutting process easy.

We are making strict quality control for the edecarburized layer, flaw and crack etc.

SUS-440C
It is Martensitic Stainless Steel, (JIS-SUS220C, KS: STS440C ) and ideal for ball bush use as it is maximized heat treatment & tempering condition for the hardness and durability.