JF 900 blades

[Suppin Diesel]

Changing blades on the JF but genuine blades are expensive, twice the price of non genuine. But is genuine a better investment?

 

[mf7480]

Non genuine blades are fine until you hit something, at which point they don’t shatter properly, they bend.

My favourites were always the lighter weight ones with the hole in, never had any hassle with bolts and plates breaking with those, but I don’t believe they’re available anymore.

 

[daveydiesel1]

Buy genuine. Am big fan of tryin to save a few quid but when puttin bits on high pressure machines or into the guts of tractors/machines its always betr to go genuine

 

[Kevtherev]

Buy the genuine JF blades they keep edge better and have a proper shear line in them.
Standard blades used to do fine when I ran them.

 

[wdah/him]

Genuine. No questions. Spurious bend and do far more harm when u find a foreign object.

 

[Cmoran]

Sorry to high jack this thread but how many blades are people running I’m on 3/4 of a set and customers looking for longer silage so thinking of going to half set will I loose much output?

 

[wdah/him]

Half set in a jf900 here.
2 in every row alternating them. As in 1,3 them 2, 4

 

[Suppin Diesel]

Think I'll take everyone's advice and go genuine. Think it would be the original blades in her and have never broken one yet.
Next question. Manual says to tighten up the bolts with a torque wrench which I don't have. Will two feet of pipe do the job? Thanks

 

[Suppin Diesel]

A half set of blades would make changing them cheaper, but might make for a harder drive

 

[AnyOldName]

Maybe I’ve got this wrong but half a set of blades/longer silage means you’re only having to apply half the number of cuts to the grass so only need half the power to drive the drum, assuming the longer grass blows as well as short grass, then output should go up?

 

[Davy]

You're bound to lose a lot of blow. Do the knives not create a lot of the wind?

 

[wdah/him]

Lost no blow with our set up. Make sure they are set right and haven't noticed more power needed but we have 160 on a 900.

There should be a spanner at he rear tool bax but if not we normally use the 3/4 sockets and pipe

Make sure u set them right

 

[Thomas5060]

Any good places to buy parts for JF online? Blades, tines etc

 

[Richy12]

Dont buy aftermarket blades, they are too brittle and just shatter. Genuine blades dont

Try if centre tullamore or david cowking

 

[Richy12]

Also you can put 1100 blades in a 900 which are toughened which was a factory option back in the day

 

[Richy12]

Think I'll take everyone's advice and go genuine. Think it would be the original blades in her and have never broken one yet.
Next question. Manual says to tighten up the bolts with a torque wrench which I don't have. Will two feet of pipe do the job? Thanks

We use an inch air gun then T bar with pipe to check but as said they need checked against shear bar before you tighten them up

 

[6480]

Sorry to high jack this thread but how many blades are people running I’m on 3/4 of a set and customers looking for longer silage so thinking of going to half set will I loose much output?

I heard of people setting the rotor back far and extended the half set of blades out far to the shear bar to create more blow

 

[mf7480]

PM’d you