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AndyChalmers

Japa 370 processor premature bar wear

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I have a Japa 370 processor.  I fitted a new chain & oregon pro-light 158SLGK095 bar not long ago.  Cut about 20 m3, never sharpened chain and bar had worn badly, chain slops about and not cut straight.  Turned bar over and perfect agian.  sharpened chain & done another 15-20m3 and bars worn again.  it doesnt seem to be cutting perfectly straight so measure the angle and only out a degree or so.  I canrt see how to get it true again.  Ive never had a problem in the past tho.  Its lubing correctly just wearing the bar groove out so chain does not sit square.  if i cut on the tip its perfect.  Can anyone reccomend anything or recomend a harder wearing bar?    

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Semi chisel chains have a lot less of a tendency to pull over and wear the bar.

I was getting wear on a solid sugihara before 10m3 through using full chisel Oregon chain but with semi chisel it’s done 50m3 and barely a sign of any wear!

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interesting, its deffo a oregan bar & oregan chain and just phoned my supplier up and they only supply full chissel chains.

 

Would you guys reccomend a semi chissel over a full on a processor? & why?

Edited by AndyChalmers

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Is it definitely the right width chain for the bar? It's easy to pick up one that's slightly too narrow so moves about. 

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interesting, its deffo a oregan bar & oregan chain and just phoned my supplier up and they only supply full chissel chains.
 
Would you guys reccomend a semi chissel over a full on a processor? & why?


Definitely! If it’s even slightly dirty you’ll get far more cutting between sharpens.

It was a huge difference going from full to semi chisel. I’ll only use full chisel on really clean timber now even then it still doesn’t get through enough between sharpens.

And therefore, whatever cutting speed you compromise on you will more than gain in more time cutting between sharpens.

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20 minutes ago, gdh said:

Is it definitely the right width chain for the bar? It's easy to pick up one that's slightly too narrow so moves about. 

yes both 1.5mm & matched.  oregon 158SLGK095 bar & 21LP (34LG) oregon full chisel chain.  I will get my verniers and measure them both to double check.

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I swapped to full chisel due the speed and ease of cut. Hand operated cutting so you really notice the difference but yes it does not last as long between sharpens 

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On 23/02/2018 at 11:58, AndyChalmers said:

I have a Japa 370 processor.  I fitted a new chain & oregon pro-light 158SLGK095 bar not long ago.  Cut about 20 m3, never sharpened chain and bar had worn badly, chain slops about and not cut straight.  Turned bar over and perfect agian.  sharpened chain & done another 15-20m3 and bars worn again.  it doesnt seem to be cutting perfectly straight so measure the angle and only out a degree or so.  I canrt see how to get it true again.  Ive never had a problem in the past tho.  Its lubing correctly just wearing the bar groove out so chain does not sit square.  if i cut on the tip its perfect.  Can anyone reccomend anything or recomend a harder wearing bar?    

Hi Andy, did you ever resolve this problem and find a more hard wearing bar & chain set up that would fit your Japa 370? 

Im having the exact same issues as you describe. 

James 

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I never James, I was going to buy a expensive bar to try then decided just to buy the cheapest ebay bars for £14 delivered.  Dont last long but are cheap.

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