Production Of Crankshaft In Lokal factory. Machining 4 cylinder ENGINE Crankshaft Complete Process

Crankshaft engine problem – CRACKED
Crankshafts are under stress and vibration by their very nature of design. Some crankshafts crack more frequently than others. The most common cracks appear in the crankshafts out of the oil holes and in the radius areas. Some minor cracks can be removed when grinding to an under-size. Shafts that are prone to cracking should be crack tested before and after grinding. Some causes of cracks can be a faulty harmonic balancer, revving the engine above manufacturer specifications or out of balance shaft and associated components. As a common rule all diesel shafts should be crack-tested at time of engine overhaul.

Production of Crankshafts in Factory Complete Process || Machining 3 Cylinder Engine Crankshaft – YouTube

Crankshafts will crack in the radius area as a result of incorrect grinding. If the correct radius is reduced or the grinder produces a step edge this crank will be more likely to crack and become unserviceable than one ground correctly. Great care has to be taken to ensure no scratches or marks are evident in the radius area.
Oil holes have to be re-chamfered after grinding and all burrs removed. Caution has to be taken to retain the correct size and chamfer. This area is very thin due to the angle of the oil drilling and will crack if not reshaped correctly after grinding.
The reduction of vibration by balancing engine components will reduce the likelihood of crankshaft cracks. Shot peening and rolling of the radius area will also strengthen these areas against increased stress produced in high performance diesel’s and racing engines.

Production Of Crankshaft,In Lokal factory – Machining 4 cylinder ENGINE Crankshaft Complete Process| – YouTube

If you watch videos from other countries, where guys are doing repairs that would seem nearly impossible without modern tools, you start to appreciate and understand what our grandparents and great grandparents were doing to make similar repairs. It’s a true testament to how good something can be even without CNC machines or what have you. In this video, the only equipment used to fix this completely snapped crankshaft is a drill press, a stick welder, and a lathe. The lathe isn’t anything new, but it does seem to work well, and the guy using it clearly knows what he’s doing. But the lathe could be 50 years old or 5, it’s all the same.

Production of Truck Crankshafts in Factory Complete Process | Machining 4 Cylinder Engine Crankshaft – YouTube

Watch as this guy cleans and machines each end of the broken pieces, which might actually be from two different crankshafts, slides them together, indexes them, and then gets his arc welding on. He then straightens the crank, machines the crank, and finally drills the oiling holes in it and then sends it on its way to be used in some truck or what have you. It’s impressive and you’ll dig it.


Production of Machining 3 Cylinder Engine Crankshaft in Factory Complete Process – YouTube

In the video below, we can see the Production Of Crankshaft In Lokal factory. Machining 4 cylinder ENGINE Crankshaft Complete Process
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