Do I Need 5/16 or 3/8 G70 Transport Chain?

[trook]

I am currently hauling a JD 3320 on a 18ft utility trailer. Should I use 5/16 or 3/8 G70 transport chains? The tractor itself weighs about 3000lbs. However, I have loaded rear tires, a FEL and always have some type of attachment on the rear (5ft rotary cutter, etc). Is the 5/16 enough?

Thanks

 

[shakin]

i believe the 3/8 chain is rated at 6000 pounds. not sure about the 5/16

 

[herringchoker]

The Working Load Limit (WLL) for Grade 70 Transport Chain is 6600 lbs. for 3/8" and 4700 lbs. for 5/16", according to a chart I downloaded from a chain supplier. Sorry, don't have the link but I got it by googling.

 

[Willl]

Pulled this out of a PDF that was post on TBN.

 

[trook]

So far, it sounds like 5/16 grade 70 on all four corners will be more than adequate for this tractor. The total weight with FEL, 3pt attachment, etc should never exceed 6k lbs

 

[LoneCowboy]

The total WLL has to equal HALF the weight of what you are strapping down.

But you need a minimum of two chains (straps, whatever) for vehicles under 10,000lbs

so two 5/16 G70 with appropriate rated hooks and binders will be PLENTY.

 

[Duffster]

The total WLL has to equal HALF the weight of what you are strapping down.

But you need a minimum of two chains (straps, whatever) for vehicles under 10,000lbs

so two 5/16 G70 with appropriate rated hooks and binders will be PLENTY.

At that rate one 5/16 would be enough to tye down three tractors

 

[Willl]

But you need a minimum of two chains (straps, whatever) for vehicles under 10,000lbs

I thought it was a minimum of 2 at both ends. For a total of 4.

 

[Willl]

cargosecurement-16-04.pdf

Pg 124 is where I got the above image I posted about WLL

Pg 102 is the statement "Use at least two tiedowns at both the front and rear of the cargo to prevent movement."

 

[burnetma]

I believe you are correct, wheeled vehicles require 4 chains/4 binders. There are many other posts on this topic.

To answer the original question 5/16" will be plenty.