Rigid coupling is a coupling of torsional rigidity, which has been widely used. The following coupling custom manufacturer to tell you that the characteristics of the rigid coupling. 1. Light weight, low inertia and high sensitivity. 2. Maintenance free, has the very good oil resistance and abrasion resistance. 3. Selection of aluminum alloy and stainless steel materials. 4. Variety, a fastening bolt type, clamping and separation. 5. Product model with different aperture size on both ends. These are the characteristics of the rigid coupling, hope to help you.