We have an essential info section looking at how to ID chains – why not take a look by clicking here.

Chains are not measured by stretching them out on a bench and squinting down a tape measure – chains are identified by PITCH, GUAGE and NUMBER OF DRIVE LINKS [no – not the cutting teeth – drive links and you’ll know the difference by even a cursory look at the chain ID link above].

Bars likewise are not measured the same way – manufacturers give them a set ‘length’ which is generally the sticky out bit that comes out of the chainsaw [not including the mount unless in the case of large double ended milling bars which are the exception to the rule and measured end to end].

Chain sharpening is key – if you cannot use a chain and have it cutting well until the cutters are so small they end up getting knocked off – you have plenty to learn. Watch, research, rinse and repeat. Read our article on chain sharpening by clicking here – often people get caught up in different angles and techniques – but the principles are always the same.

If you are serious about correct maintenance of your bar and chain work your way through the Oregon manual [click here] and after that check out the Stihl equivalent [click here]. Using a chainsaw for 20 years [badly] does not qualify you as an experienced user – so be the change, make the difference and keep educating yourself about these valuable yet dangerous tools.

And finally – why buy a new bar and chain without checking/replacing the drive rim or drive sprocket? [again click here if unsure on what these refer to]. Would you change the oil on your car without changing the oil filter?


75CJ Oregon Square Ground Full Skip Chisel 3/8 .063[1.6mm]

$0.89

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Stock 4612
Part Number 75CJ Part Number 75CJ Category:

Oregon square ground chain [This is the full skip version] – square ground chain is the highest performing chain there is with very fast cutting and good stay sharp properties. 15% to 20% faster than standard full chisel. Almost impossible to source in the UK – we try and stock it but it is expensive to get in and can run out of stock for a few months at a time.

The disadvantage is that it is very hard to sharpen correctly – a very different technique is used with a special (and expensive) type of file click here to find.


Using the Granberg clamp on file guide is essential for getting this type of chain sharpened right as then you can set and duplicate the complex angles. There is an excellent guide on how to do this here. If you are serious about square ground chain you need to read it.

 

‘A skip chain has fewer cutting teeth than a conventional chain which means it won’t be dragging as many teeth through the wood you’re cutting. Less drag on the chain means less power is needed to cut through the log. That means the motor on your saw runs faster which keeps it in a more efficient power curve. It’s the same principle you use when downshifting a transmission in your truck to go up a steep grade. You get more power by increasing the engine speed. ‘ Steven Gregersen USA

 

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