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In the laser seam welding test of these two 3mm steel parts, a 4kw fiber high powered laser and D50 fiber were used to achieve a penetration depth of 4.5mm. The welding speed is 20mm/sec. It has achieved a processing time lower than other welding technologies, minimizes thermal conditions and obtains a significant welding section (>0.65mm.), which directly affects high process stability, high cutting resistance and tensile straightness, and improves welding The durability of the components. Our customer wants to check whether laser welding can produce a reliable joint in the bearing housing manufacturing. In this case, we use a 2.5 Kw CO2 slab laser and a Precitec welding head with a welding speed of 1 m Every minute, find the maximum penetration force without affecting the inner diameter of the shaft. For space exploration, the parts produced are produced in small batches. Two parts were produced, and one was sent into space: flight mode (flight model) and interchangeable parts (spare model).