hehe, yeah edwardt that is probably true i suppose
but i havnt ran across many of those probably due to the cost as you said.
I know guys that have tried to repair them only for them to fail not long after the repair.
I only suggest converting to the new style connection group because i see more of those and they seem to hold up fairly well.

Swoop, those swivel blocks were made for longer than you have been alive (me too, and I am -old-) and are still made. the thing was that the swivel costs a lot more than the protector, and has to be lined up pretty well with the hose reels.

Thank you gentlemen for your help. I will bring this up with our forklift service provider.

ok i just wanted to clarify where the swivel was, i was thinking center block but since it is the swivel block on the carriage i understand what you are saying now.

those have always been a weak point and cascade didnt make those very long before redesigning it to a bracket, bulkhead fitting and a reinforced flexible holder assy for the hoses.
i believe edwardt hit on this already
I'd call cascade and they can tell you what this is.
The conversion is simple to do and works alot better.

This could be a heat issue. How hot do the hyd. lines & swivel get during operation? If they're hot to the touch, a jump up to next size hyd line may be in order. I've had this issue before with internal hose routing with a paper roll clamp. Unit kept blowing hyd. lines. Found that temp of hoses was too hot- over time weakening the hoses. Stepping up to the next size hose solved the issue.

Gentlemen thank you for replying. I am speaking of a rotating roll clamp made by Cascade. Here is the info on the data plate,

serial no. 14416-1-14
catalog no. 60F-RC
weight Lbs. 2,056
attachment capacity 5000lbs.
load center 36 inch
max hydraulic pressure 2300

the hose reels are conneceted to the mast one on the right side one on the left side. the hose swivel blocks are connected to the clamp carriage. The leak is in the hose swivel not in the center block.
thanks again!

being that generally the 'attachment' is not actually part of the forklift, they are usually made by a different company such as cascade or longreach, bolzoni etc.
it should have a dataplate on it somewhere
if we had this information it might be more helpful

what kind of clamp is this?
bale clamp?
roll clamp? (i assume this is it since you said 'mill roll')
rotating or stationary clamp?(i assume it does this being a roll clamp?)
going on what edwardt says, is this swivel block part of a hose reel? or in the center of the clamp? If it swivels where the hoses connect to the attachment at the carriage then what edwardt says is correct, there are other ways they use now to connect the hoses and allow for the hoses to traverse up and down without the swivel block.
But if this is a rotating clamp then i'm thinking the block in the center of the rotator.

need more info

my guess is the swivel block you are speaking of is a hydraulic hose swivel and the hoses are mounted to a hose reel and that if it is the o-rings inside the swivel block that start leaking,
you are over tightening the hoses. they should be almost slack and not more than 1 spring loaded time around the reel when the hose reel is closest to the swivel block.
Most designs have gone away from a swivel block, and use a hose protector clamp to keep the hoses from crimping as the hose's 'angle of attack' changes as the carriage lifts past the hose reel.