A universal joint is a mechanical device that allows two shafts not in line with each other limited freedom of movement in any direction whilst transmitting rotary motion.Available in alloy steel, stainless steel or special materials, the single joint configuration can accept up to 25 degrees of angular misalignment where as the double joint designs can accept up to 50 degrees of shaft misalignment. Model designs can include needle bearings, hardened bushes or plain pin, depending on torque and speed requirements.
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