Fitting a rotator grab

[RDB logs]

[attach]149115[/attach]

 

Hi Sam I'm interested to see you have left the ram in place, does it not de rate the lifting capacity? As I'm on the limit on my mini all the time! Where and how much was your grab?

If the link below works it is great, he picks the trailer up I could watch him all day!

 

Cheers rich

 

 

[difflock]

A very tidy operator/operation.

[dig-dug-dan]

I still haveto get offthe seat as itsonly a semi hitch. It also means there is only one lnch pin to lose, as the hitch is bolted on, and all the buckets have dummy pins. In. My line of work I often have to change buckets several times

[SAM66S]

Hi Sam I'm interested to see you have left the ram in place, does it not de rate the lifting capacity? As I'm on the limit on my mini all the time! Where and how much was your grab?

 

If the link below works it is great, he picks the trailer up I could watch him all day!

 

 

 

Cheers rich

 

 

 

 

 

 

 

The grab & rotator was from riko. Think it stands me about £1000 after i had it piped up & the digger hydraulics altered. The bucket ram is still on there as i use it as a digger with buckets & auger etc. I've lifted some big lumps with it, the lumps in the picture were loaded on my ifor tipper with the digger dont think i would want to go any bigger though. 2ft diameter 5ft long

[Rich2484]

What's you lifting capacity on the grab.

 

The botex I have fitted is 1500kg.

[Rich2484]

Been using it a bit this week. And I'm not impressed with the pipe arrangement.

 

The four in are very close together and one just seems to keep coming loose.

 

I have snapped one of the male,male connectors twice now.

 

I have the pipes arranged the best I can see but they still take a battering, one is wearing through to the metal already.

 

There is a bar around the pipes on huge rotator. Thinking of making a guard onto this to protect them a bit from any knocks.

 

The problem I can work out is if your not carefull the grab can swing too far and knock the pipes around.

 

Think I will make a coupe of stops on the sideways swing so it can't travel up too far.

[Breezeblock]

the ones that we've done have a damper brake on the pivots to stop this

[Rich2484]

Any chance of a pic of the damper brakes. Thinking this needs it. Just swing too far.

[codlasher]

My original Wartsila crane had stops. My Botex had stops. The current timber grab fitted to my 7.5 ton has done similar to what you're experiencing! I have changed things around and may weld on a stop. For now though I have now fitted the guard that I forgot about and the pipes have a metal 45 degree bend before heading for the flat face quick couplings.

I was trying to be clever and up-ending a grab full of unevenly loaded sticks, bump then on the floor to even things up a little and broke the pipe.....I can now do this without problems.

codlasher

[NI Tree]

Any chance of a pic of the damper brakes. Thinking this needs it. Just swing too far.

 

http://www.clark-engineering.com/media/uploads/cat-114/clark-engineering-timber-handling-Indexator-gv-av-rotators.pdf