The spline shaft is the main spare parts of agricultural machinery products. The quality of the spline shaft will directly affect the overall quality of agricultural machinery products. There are many inferior products on the market, which seriously affect the service life and safety of agricultural products. When purchasing, pay attention to the following points: 1. Must have a product certification, product name model (which should be consistent with its own model), manufacturer's name, factory name and address (beware of counterfeiting), manufacturing date (the recent is good, generally not more than 1 year). 2. The packaging is intact. Open the wrapper, remove the anti-rust oil and observe the surface of the spline shaft. It is required to be smooth, free of scale, spots, dents, and burrs. The work surface should not have nicks, rust, dark spots, knife marks, pits and bumps. 3. In addition to the necessary undercut grooves and wheel overtravel grooves, there must be no nicks, cuts, cracks, etc. at the root of the spline, at the joint between the shaft and the flange, and at the corner of the pedestal journal. 4. The surface of the center hole of the spline shaft is smooth and free of scale because it is a reference point for machining and has a direct relationship with the geometric accuracy of each part. Mushroom Champignon Cubes,Champignon Mushroom A Grade,Dried Champignon Cubes,Dried Mushroom Cubes Xinghua Dongbao International Trade Co.,Ltd , https://www.xhdongbaofoods.com