Tripod-type universal joint - has balls working in grooves holding pivoting heads on arms at correct angle

摘要

The tripod-type universal joint has components sliding axially in relation to each other, the sleeve-type outer one (1) having three axial recesses (2) with races (3, 4) in opposite pairs in the peripheral direction. The inner one (5) is a three-armed spider whose arms (6) engage in the recesses and have pivoting heads (8) with bearing balls (11, 12) working in the races. The balls work in grooves (13, 14) in the races, these grooves holding the heads at the correct angle and so that they cannot move in the radial direction in the outer component. Each head can slide in the radial direction on its respective arm. USE/ADVANTAGE - Tripod-type universal joint is cheap and gives less vibration when working at an angle.