Engine hours vs mile's

[GRW]

For work vans I've worked for decades on 30mph = 1 Hour (this was for estimating Engineer travelling hours to/from a field job on predominantly rural roads). It worked out pretty accurate (You gained a bit on m-way sections and lost a bit on country lanes).

So 1000 hrs equates to 30,000 miles. You'd see the odd genset engine or big industrial engine get to 30,000 Hours, but half that might be more typical.
When you think an open road use car does maybe 7,000 hours to hit 150k miles - its an indicator of how much "beefier" the tractor & industrial engines are..... BUT note that tractors used very hard for Contracting work might be clapped out before 10,000 hours - so like all things a lot depends on how hard they get been worked and how well maintained.

 

[premmington]

Engines idling at low oil pressure at low hours are bad news...

 

[brightspark]

wunder what it wold be on a generator or a mobile comp generaly running fast

 

[julianthegypsy]

Years ago we used to reckon a tractor would need a full overhaul at 10,000 hours. That was doing heavy work like ploughing. Things are probably a bit different now but I'd be surprised if that was far out.

 

[Bornfree]

Are you wondering about running gear wear miles or engine wear in miles,

No I was just curious about how many miles a car would have done to hit the same 20,000 Hours that the tractor had clocked up.

 

[AVI_8]

The same engine in a well maintained truck would make it to 1m miles before it needed an overhaul, tractor hours can be harsh.

Bob

Trucks will go on for hours and hours per day with good maintenance, tractors are owned by farmers, maybe their owners are not as good with maintenance as a haulage company, my dad was a farmer, I can vouch for that!
I’ve been around engines long enough now to know that oil and filter is a good insurance policy, 5000 miles is my go to for replacement.

 

[s410man]

Old tractors with analogue clocks were calibrated to clock the hours correctly at 540rpm pto speed which was usually around 1800rpm pto speed

On some machines such as combines and forage harvesters there are 2 clocks- 1 for engine hours and 1 for working hours ie actual combining not just idling/travelling
Usually those machines are working for around 70 percent of the time the engine is running

On our tractors I would say the average would be closer to 5mph-little road work and steep banks and also it's surprising how the average speed drops when your opening gates etc

My truck averages around 24mph but again lots of towing and country roads