Thank you ... I just sent and email asking to price me 100 of them.
I really prefer the tap type, ( not tap in with a hammer ) but drill and make a few threads with a thread tap.
I'm old fashioned, I guess, but for the amount of machinery manufacturing you do, would the increase cost really save you that much production time?
Would it harm your reputation with customers when they loose, gum up or break off a zerk and find no threads for a replacement?
With farm machinery dirt, seeds and dust can be a real serious clog factor, plus many folks are not too particular about wiping off the fitting before greasing or after if the nozzle slips and they pump grease all over the outside, or if the ball is stuck.
Many implements, PTO shafts in particular, have holes in a guard, making it hard to get to a zerk and even harder to find it, much less replace it.
As far as angles, I have equipment with straight, 45 deg, and full 90 degree angles and keep replacements for all, as well as a few different thread sizes. Of course straight ones are preferred for changing but I have changed a lot to 45 degree to make it easier to get the nozzle on, where needed.
A hand gun can exert far more pressure than an air gun to blow out a fitting. I prefer a hand gun so I can feel what is going on
as far as resistance of the grease going into the fitting. A lot of the "so called" missed fittings are really from the use of air gun greasers that are more interested in ticking off a work sheet than protecting a shaft, bearing, or bushing..
From a customer standpoint I would much prefer a threaded zerk with the extra money spent on some of those plastic. bright colored, snap on covers. They don't last forever, but are easily replaced if the customer wants too.
From a customer standpoint, I look for things that make my job of maintaining easier.
Some of the stupid zerk locations are chosen as a convenience in the high speed manufacturing process, not as a sensible location for maintenance after the equipment is field ready.
I'm sure you may hear opposite opinions and justifications from many. I think Allis Chalmers used pound in fittings many years ago..
