Hey everyone! I'm a coach and maintenance worker at an MMA gym, and I've been trying to troubleshoot an issue with our heavy bags. We have tall, 160-pound bags that mount to a 3/4 inch eyelet using a 1-inch carabiner on a standalone frame. I've been using 5w20 synthetic oil in the hopes of reducing friction and wear, but it's just making a mess while the metal still wears down. Currently, I'm using a DIY bushing made from a pool noodle wrapped in electrical tape to avoid buying motor mounts, but I'm concerned about how often I'll need to replace those. Is there a better coating or bushing option that can withstand the force of a heavy bag swinging aggressively, which won't break the bank and will last longer? Any brainstorming or ideas you all have would be greatly appreciated!
2 Answers
You could look into using a ball joint like ones found in vehicles. They press into place and are held by a bolt, but it might be a bit tricky to set up. A universal joint from a driveshaft is another option - they have roller bearings with rubber seals and a grease fitting. It’s affordable (around $10) and could be modified for better longevity. Although, it’s tough since the bag will eventually wear on the metal hardware due to the swinging motions.
Have you tried using white lithium grease? It works really well on mine and lasts a long time with just a small amount. Might save you from the mess of motor oil!
I’ve heard about that from a patron at the gym. Definitely sounds worth a try, thanks!
I really like that idea! Just frustrating to think about the metal-to-metal wear... but I appreciate your insight, thanks!