04-08-2013, 05:28 PM
Hi Tom, thanks
There is a pendant (the standard one that comes with these hoists) it is attached to the spring balancer so when you bend down to hook something up it comes with you. You can just see it in picture 4 under the quill of the mill.
With the load rating I did my home work over a long time before building it. I went to a few jib crane manufacturers sites and this size steel was being sold on 1 ton cranes, so plenty for 0.5 ton. I have lifted 400 odd kg on it but that was a one off as I only built it to lift the rotary table etc.
I placed the 500kg stickers on it because that is the maximum load for the hoist, but would be comfortable placing a 1 ton chain block on it and lifting 1 ton no problems. I built in a rise in the jib of around 5mm over the full distance, you need to allow that so the jib will be strait when fully loaded as the steel will flex. I picked up this tip on the crane sites.
All the welds are deep V'ed out for good penetration and I have added a few pieces to over strengthen it around the pivots.
Dave
There is a pendant (the standard one that comes with these hoists) it is attached to the spring balancer so when you bend down to hook something up it comes with you. You can just see it in picture 4 under the quill of the mill.
With the load rating I did my home work over a long time before building it. I went to a few jib crane manufacturers sites and this size steel was being sold on 1 ton cranes, so plenty for 0.5 ton. I have lifted 400 odd kg on it but that was a one off as I only built it to lift the rotary table etc.
I placed the 500kg stickers on it because that is the maximum load for the hoist, but would be comfortable placing a 1 ton chain block on it and lifting 1 ton no problems. I built in a rise in the jib of around 5mm over the full distance, you need to allow that so the jib will be strait when fully loaded as the steel will flex. I picked up this tip on the crane sites.
All the welds are deep V'ed out for good penetration and I have added a few pieces to over strengthen it around the pivots.
Dave