| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique related to a grease nipple having high performance and capable of preventing a leakage of grease, buckling of a spring for check valve even by high pressure pouring, and a leakage even if the grease is like an oil having low viscosity. SOLUTION: This grease nipple for pouring lubricant into equipment is provided with a body 10 in which lubricant flows and which has a through hole 17 formed by narrowing both ends in the longitudinal direction, a check valve 20 provided in the through hole 17 to block a filling port 11 which is one end of the through hole 17, and a coil spring 30 for the check valve provided in the through hole 17 to energize the check valve 20 toward the filling port 11. The check valve 20 is formed like a plate provided with a circular conical seat 22 sealing the filling port 11 and an insertion shaft 21 for fixing the check valve 20 on the coil spring 30 for the check valve.
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