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I'm in the UK. I've always liked the Condor MDR3 pressure switches, but have only usually seen them factory-fitted on 3-phase compressors. Every one I've ever seen has had an overload fitted. As I recall, there is adjustment for the on/off differential, which is absent from many pressure...

I think the more expensive 66-piece set tops out at 3/4", whereas the 76-piece set tops out at 1/2". Big taps and dies tend not to be cheap, so that probably explains it. The "don't buy a set" advice above is good.

It's difficult to say because it varies according to the nature of the task and the reason you need to change disks. If you are cutting steel angle/section into lengths, for example, and need to change disks when they're no longer big enough to make a complete cut, the MetalMax will likely...

My experience has tended to be that the "better" ones do tend to be better and last longer. It's not as clear-cut as it could be though: there are expensive disks that last no longer than most cheap ones and there are cheap ones that punch well above their weight. I'm across the pond, so...

Never buy because the high speed is high. Lower low speed is good, but you do need torque. Belt drive machines increase torque as they reduce speed. Variable-speed motors do not: they generally run at "constant torque". For lower-cost machines, the speed range of the variable-speed machines...

As a general rule, and subject to keeping within the design range, it's best to run the compressor at the lowest speed that gets the job done. It's quieter, cooler and puts less stress on the mechanical components that way. If it isn't getting the job done, it might be worth looking at speeding...

Almost certainly yes. The only caveat is that not all variable-speed lathes use VFDs and 3-phase motors, so it's worth checking it does actually use a VFD.

As far as I can tell, the main difference is in the frame cooling: the LT1410T is an open frame, while the FDL3612TM is Totally Enclosed Fan Cooled. Indoors, either will be fine. If it's outdoors, or somewhere that has potential for a lot of dust, especially metal dust, and/or insects, I'd...

As others have mentioned, it seems to be an inverter/motor combination, with the control board manufactured by Feil. https://www.fielsrl.it/applicazioni/ The bumph on the website suggests that the control board converts single phase (120V in your case) to 3-phase: I'm guessing 220V. The motor...

Personally, I'd be looking at a VFD to run the existing motor, assuming it'll run on 3-phase 220V, rather than changing the motor. There will be a line from the Non-Return Valve to the pressure switch. It releases the pressure between the pump and the NRV so the first couple of turns of the pump...

I've been using Bolle and 3M safety readers for years. They are about the same in most respects. The big difference I've found is that the bifocal bit is moulded onto the outside of the 3M, but the inside of the Bolle. With the 3M, every scratch ends up on the bifocal bit because it sticks out...

Should that be "flow varies by the cube ROOT of the impeller diameter", assuming all else is equal? I tend to think in terms of changing the speed of existing fans, rather than changing impeller diameters, and it's giving me a headache. Fans are fairly complex things to try to compare. You can...

You can, as I'd posted four hours before. Trying to help you out, here: At present, it seems you have a 4" pulley on the spindle and you want to go to 8" to halve the speed? If you just change the spindle pulley, the angle over which the belt is in contact with the motor pulley will reduce. If...

Sorry, should have read the original post more carefully. You can run at a single speed: bigger spindle pulley and/or smaller motor pulley. It'll limit you to one speed. As the reduction ratio increases, you'll get less "wrap" on the motor pulley and at some point you'll find the belt slips...

The easiest way is probably to replace the motor with a 3-phase one, preferably with a higher pole count and lower speed, and drive it with a VFD. If you have a 4-pole motor (a little less than 1800 RPM on 60 Hz mains) and fit a 6-pole (a little less than 1200 RPM on 60 Hz mains) of the same...

They look like a sleeve shutoff valve I've seen on a few cheap, small compressors over here (UK), mostly Italian-made ones. Inlet on the right. With the sleeve slid to the right, air gets into the sleeve, but has nowhere to go. The hole on the right is open and vents out whatever is connected...

I have always used the finest steel wool I can find (usually 0000) and a paste metal polish (usually Solvol Autosol or PEEK). The steel wool will not scratch the shaft (most hydraulic cylinder shafts are chrome plated, as said above, but not all of them). A non-abrasive non-woven pad will also...

XPH07 and DHP481 appear to be exactly the same machine. Only the nameplate seems to be different: XPH07 for the US market, DHP481 for the rest of the world.

Very limited experience here: I may have pulled a couple of thousand rivnuts over the last 35 years: an average of maybe one a week? Bolt and nut works well and is cheap. It also handles steel and stainless Rivnuts in any size you can get nuts and bolts for. It doesn't really mind whether you...

You need an SDS drill and a suitable bit. Rent or buy is the choice and you'll want to look at the costs. One hole, probably no more than an inch in diameter, through 24" of almost any rock should be no problem at all for any SDS drill, even a real cheapie. Look at the real cost of renting...