Chipper JINMA 6 CHIPPER

[inveresk]

I had a Jinma chipper delivered yesterday and started putting it through its paces this morning. First impressions are that although some of the mechanical detailing is a little crude, it's robustly made and good value compared with what else is on the market. (Let's hope I don't have reason to change my mind on this).

The dealer delivered the chipper to me on the island for $1922 CAN (plus taxes) and had carried out the predelivery service (with the exception of greasing the pto shaft which he told me about).

It chomps the big, dry stuff beautifully but doesn't like branches with a lot of green on them. The mechanical feeder seems to have a problem even with small diameter cedar if there are a lot of side shoots so I'm having to spend a fair degree of time limbing these. Size of chips is smaller than I'd like - great for mulch but not so good for paths and walkways where the big stuff doesn't stick so readily to footwear. I'll have to see if I can somehow alter the chip size.

The largest tree/branch I've fed so far is around 4 1/2 inches and the L3130 hasn't even hickuped.

Here's a useful link for commissioning the chipper before use.

Jinma 6 preservice

 

[Ranch_Hand_Supp]

inveresk, Adjusting the gap between the knive and anvil changes the size of chip. The ones I have put together so far has been out of adjustment [gap].

Make sure the V belt that drives the feed roller gear box is not slipping.

As a rule...green chips better than dry. Maybe do a little rechecking on tightness and adjustments??

Let us know

Ronald
Ranch Hand Supply

 

[inveresk]

The feed roller seems ok, Ronald, and turns continuously. The belt does not seem to be slipping. It would be useful if there was some adjustment on the roller though. The tension springs that are supposed to keep it tight against the timber don't seem to be enough at times, or the roller teeth not sharp enough, to grab some of the wood. While the roller turns, it slips on the cedar. This doesn't seem a problem with other species though.

Thanks for the advice on changing the size of the chips. I'll try to get that anvil/blade gap adjusted this weekend.

 

[Ranch_Hand_Supp]

inveresk, If the tension springs are good and strong. The teeth on the roller drum may be full of paint. You could take a triangle hand file and remove the paint and also do a little sharpening to make it bite. I guess it is just pulling the bark off??

Ronald
Ranch Hand Supply

 

[CTyler]

Mine slips when you get a lot of branches sticking out and bind/drag on the chute. This is more appearent on really small branchy/twiggy stuff. Usually sticking another branch in there will pull the other stuff through.

I have considered sharpening the roller teeth since they are dull from the factory. The reason for not doing this is it will put more stress on the jack shaft knuckles. There have been several complaints about killing these. Mine has had not had problems so far.

 

[inveresk]

Yes, Ronald, on cedar it rips the bark off but can't bite into the flesh. I had thought of sharpening the teeth but wondered if it might overstress the roller drive mechanism in the event of a jam.

 

[Ranch_Hand_Supp]

inveresk, I quess that is possible. I just look at it like a timing thing. The cutting blades have to keep up with what the roller is trying to feed it. Blade gap [size of chip] 540 rpm.

You will figure it out this weekend.

Ronald
Ranch Hand Supply