With decades years experience, DDMET is regarded as one of the foremost cardan shafts Manufacturers, Exporters and Suppliers from China. It has been specialized in producing universal joint shafts (also called cardan shaft or drive shaft)for more than twenty years. Our products are largely used in rolling mills, Pipe straighteners, Crane equipments, Steel mill, tube mill, continuous casting machinery, Paper machines, Roller conveyor, Rotating furnace, Mining machinery and other heavy duty machinery for power torque transmission. Product Property Universal Joint Shafts, Universal Joints, Cardan Shafts. 1. It is wildly used in Large Steel Mills, Heavy-duty Machinery, Crane, Metallurgical Industry, Shipbuilding Industry, Mining Industry, Autotrucks, Hydropower Station, Nuclear Power Station, Construction Machinery, Paper Machinery and other heavy machinery industry. 2. ISO9001 (The Production and After-sale Service of Coupling Device and Its fittings) 3. OEM manufacturer Packing Details : standard seaworty package Delivery Details : 3-30 days after orde down payment Manual of Universal Joint Shaft / Cardan Shaft. Correct selection, installing and careful maintenance are the important conditions to make the coupling use normally, so please pay attention to following points: 1.Correct selection is important for excellent performance of universal joint shaft / cardan shaft . 2.Must specify this general drawing number when ordering the same parts. 3.Class 10.9 bolt is coated with anaerobic adhesive to prevent looseness. 4.In order to use it easily,we recommend cooperation f8 for outshot of flange and correlation H8 or keyway of end surface key. Keep flange surface clean when installing and check the connecting bolts regularly ,and tighten them with a stipulated pre-tightening force. When putting spline shaft into spline tube, the central lines of bearing holes on both ends should be the same plane to guarantee the shaft work synchronously. 5.Our products have been injected grease already after production. Please lubricate it in one or two months after installation and use. 6.Pay attestation on preventing water, dust and other corrosive substances. Please don't knock the device with hammer or it will reduce the service life of the product. 7.If there is abnormal sound or move us and down, please examine it in time by professional . If you have another question, pls feel free to contact us as below: