Maintaining locks is essential to ensure they are in good working order. Lubrication is one of the most important maintenance tasks to consider, but it is often overlooked. To lubricate locks, there are a variety of lubricants available on the market. The locking cylinders of locks consist of small pins and springs that need to move freely for the lock to work properly.
When these components start to get stuck, the lock won't work correctly and can even break if you try to force it. Applying lubricant to the keychain of the lock will cause the pins and springs to move again and will keep the lock in good working order. It is important to apply lubricant generously; you can't over-lubricate, so more is always better in these situations.