Hello.
Could someone point out differences between PTFE and molibdenum disulphide as solid additives in grease?
As I understand both seem to be doing the same job - act like plates preventing seizure and metal to metal contact in extreme pressure situations.
However MoS2 always seems to be the first choice in industry while PTFE is more of a gimmick. According to the following info, PTFE is not effective at low temperatures. And I see it all the time as a an add on to greases and oils operating at standard temperatures.
This is what SKF says about PTFE:
Quote:
Generally greases fortified with PTFE offer no additional performance other than high EP performance. When high EP performance is required other solid additives such as molybdenum disulphide and graphite prove to be more effective. Technically the use of PTFE based greases, fully synthetic and fluorinated only makes sense at extremely high operating temperatures.
What do you think about PTFE greases? One observation. I don't remember seeing MoS2 as an additive in a high speed bearing grease but I sure have seen PTFE. Any thoughts on that?
And another question... Is there a benefit of using PTFE or MoS2 grease in light conditions (eg. sleeve bearings) in order to extend lubricating intervals?
Could someone point out differences between PTFE and molibdenum disulphide as solid additives in grease?
As I understand both seem to be doing the same job - act like plates preventing seizure and metal to metal contact in extreme pressure situations.
However MoS2 always seems to be the first choice in industry while PTFE is more of a gimmick. According to the following info, PTFE is not effective at low temperatures. And I see it all the time as a an add on to greases and oils operating at standard temperatures.
This is what SKF says about PTFE:
Quote:
Generally greases fortified with PTFE offer no additional performance other than high EP performance. When high EP performance is required other solid additives such as molybdenum disulphide and graphite prove to be more effective. Technically the use of PTFE based greases, fully synthetic and fluorinated only makes sense at extremely high operating temperatures.
What do you think about PTFE greases? One observation. I don't remember seeing MoS2 as an additive in a high speed bearing grease but I sure have seen PTFE. Any thoughts on that?
And another question... Is there a benefit of using PTFE or MoS2 grease in light conditions (eg. sleeve bearings) in order to extend lubricating intervals?
