Does anyone have information on remote gearbox vents. Maybe moving vent from gearbox to a remote location with a tube or hose ran to it for better access so vent or filter can be checked during run time when it wouldn't normally be possible to do so.

I am not sure I understand your question. Would you please explain about checking remote vents?

What machine and application is this?

Hi Bill

We have been researching this area now for the past 5 years and have found that this is the cause of 95% of the damage we see in the field,
We commenced working with a filter manufacturer and in association with developed filters that under test will deliver 1µm @ 99%, 0.2µm @ 80% efficiency using cellulose media,
Huge amount of data accruded here and the only system we can get to work 100% is bladder bag breathers where as the drive is sealed,
anyone who wishes email and can send how to make your selves lab@rttech.com.au,
with good quality breather filters, < 1 µm, we get 3 months and the hard particles will work through the media,
when we mount directly on hard working drives with oil temps 70-80°C the oil mists rapidly damage the filter media causing breather change,
remember the expansion rate for air is 10% for every 10°C change in temp, it's a very soft air flow,
so we often recommend the breather be remotely mounted,
20-30 feet away no difficulty,
the hose diameter is not critical we often are using normal air line poly hoses with the push on couplings, the remote filter will prevent the oil mists from damaging filters and the breather filter then can be mounted in a "clean" area to assist with filter life and drive cleaness, the sub micron filter we developed are $15 each, we tested. cut open and imaged filters worth $100-200 and all were allowing the critical sizes or dirt through in 3-4 months so the idea with the inexpensive filters is to replace every 3 months or when the particle count in the drive commences to elevate,
Once you get the breather filtration correct the oil storage shed is next path for contamination in the drive
Regards Rob S