Drop Cable

[OnOff]

Looking into alternatives for a drop cable from a roof top crane to a man riding basket. Comes off a powered, spring tensioned reel at the top.

Existing stuff is 9-cores x 0.26mm sq, black pvc sheath with an integral steel wire strainer about 7/8mm dia. Needs to be flexible, strong and good at external temperatures. Comes (came) from Italy via Eland in the UK. Last batch made in 1996. I can get more made if I take 1000m of it. Someone mentioned using  "multicore co-ax" i.e. with a braided shield for strength to take the place of the steel wire strainer.  Any suggestions?

Thanks

 

[Sidewinder]

Don't use co-ax, stick with the crane cable.

Lapp is good stuff.

 

[OnOff]

http://lapplimited.lappgroup.com/products/flat-lift-hoist-cables.html

You may be able to buy it by the meter (never bought crane cable so cant promise but all other special cable is by the meter)

If you want a contact name - pm me

Cheers for that. All the cables there though have too big a diameter. Will probably go with the Italian special order. Have 2 jobs next to each other with 5 cranes in total and they'll all go at some time!

 

[OnOff]

Give Lapp a ring with what you want - they may have it in Germany and may not be in the catalogue 

Fair point, I'll have a go tomorrow. Cheers.

 

[Robin Spark]

Mrs Robin tweeted me and said you could always try blakley cables or eland as she uses them a lot for specialised stuff.

 

[Sidewinder]

Also Nexans, CSE & FS Cables to consider.

5 cranes to do, how many m per crane?

 

[Sidewinder]

I've recently had a run in with an Italian high speed motor, rubbish stuff!

 

[OnOff]

I've recently had a run in with an Italian high speed motor, rubbish stuff!

Used to import stuff with Bonfiglioli motors on. On quarterly services I used to remove the rubber seal around the brake and it would be full of RUST. Ended up changing the majority for SEW motors - the kit had SEW drives on anyway.

Didn't help that the equipment makers hadn't originally bothered to do proper motor start ups via Movitools and we had shed loads of failures. I personally had to tell the makers about setting them up with a laptop connected. If you get an SEW motor and drive it's pretty easy as you pretty much just tell the inverter which SEW motor its driving. With another motor make, like Bonfig you have go through more parameters. 

All the makers were doing was slinging in an SEW drive and Bonfig motor and setting up the motor with one of these that only allows basic settings to be changed:



We had 4-pole motors with inverters thinking they were driving 2-pole ones and all sorts!

Also Nexans, CSE & FS Cables to consider.

5 cranes to do, how many m per crane?

Building height varies but say 14 floors is the highest I think. If you sell the client a spare cable on the basis of how hard it is to get (6 week delivery etc) then you'll soon get through a 1000m. A couple will likely get broken through misuse as well.

 

[OnOff]

Tried LAPP.......v.helpful but couldn't help. Their closest OLFLEX Lift cable with a steel strainer core was 14.4mm dia. Ordered the Italian stuff and going to fit a length of CY as a temporary fix. Cheers.