- Hinges should be well greased and checked on a regular basis for lubrication. We recommend that hinges used in commercial, high-frequency applications or those in extreme environmental conditions be lubricated annually to ensure quiet operation and long life.
- Standard hinges are best lubricated by removing the pin, applying a generous coating of lithium grease, and reinserting the pin by driving it completely down to the shoulder of the pin head. Light oils such as WD40 are not recommended as they dry quickly and wear away over a short period of time.
- Hospital Tip (HT) hinges that have fixed hinge pins have an oil port on the knuckle for the purpose of lubrication. The hinge knuckle is designed with a .107 diameter lubrication port set at 15 degrees off the leaf, making it accessible when the door is opened 90 degrees. Lubrication is accomplished with a standard, manual grease gun fitted with a rubber cone tip (Lincoln Rigid Adapter #83278) using white lithium grease. With the door at 90 degrees, insert the rubber tip into the lubrication port in the barrel of the hinge and pump grease until it flows from between the single and double knuckles
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