Anonymous-0
Well-known Member
I have a 5/16 chain. Is that big enough for pulling logs. Or should i go bigger. I guess what im saying is will a 450 break a 5/16 chain.
- Thread starter Anonymous-0
- Start date
Depends on the alloy , or grade of the chain.
grade three breaking load 7,600 lbs
grade 4 breaking load 3,900 lbs
Grade 7 breaking load 18,800
Grade 3 when worked hard will bend and distort the links, then it will loose strength.
I use 3/8 grade 8 chain for that purpose, not apt to have problems. Don't forget, the chain is only as strong as the weakest link, that could be a clevis, a hook, a repair link etc. getting a good strong chain is cheaper than getting hurt
grade three breaking load 7,600 lbs
grade 4 breaking load 3,900 lbs
Grade 7 breaking load 18,800
Grade 3 when worked hard will bend and distort the links, then it will loose strength.
I use 3/8 grade 8 chain for that purpose, not apt to have problems. Don't forget, the chain is only as strong as the weakest link, that could be a clevis, a hook, a repair link etc. getting a good strong chain is cheaper than getting hurt
old
Well-known Member
- Location
- Camdenton Missouri
That is a yes no or maybe question. Depends on the chain and its tensile strength. How your going to use it. I you plan to use it to jerk them out NO WAY. Now a straight pull probably be just fine since you only have 55HP to play with
JimB2
Well-known Member
- Location
- Ottawa, Ontario, Canada
Hi, pulled many logs with grade 8 5/16" chains using 300U, B414, 454 and 684 tractors. Sometimes it is better to have the chain break than to break something on the tractor if the log snags a root or rock while being dragged. We also had a grade 8 1/2" chain that we used for heavy pulls such as when a tree gets lodged in another tree. The 1/2" chain was just to heavy to be dragged thru a couple feet of snow when you are hooking up to the log.
JimB
JimB
The problem is always how it is unintentionally used. Snags are a concern, as are pulls that tend to kink the chain. An improperly set hook can cause link damage, and the main reason for bad links is people wrapping them around a drawbar. Links don't like to be drawn over a sharp edge. Using a grab clevis will generally stop most of that. In 5/16 you generally need a grade 70 to avoid breaking stuff, and 3/8" would be my choice. They are a bit spendy yes, but will serve you well for years to come.
JimB2
Well-known Member
- Location
- Ottawa, Ontario, Canada
OOPS grade 80 not 8.
JimB
JimB
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