This is the drive assembly for a 2000-pound radiation door. The clutch is chattering and the customer wants to replace it. The manufacturer wants $3900 for the clutch. I'm reasonably certain it's a standard industrial part so I would like to see if I can source it elsewhere. My tech didn't take a very good picture. I need to identify the logo on the round grey part between the two gearboxes.
I figured it out.
It appears to be a Warner clutch and they are hella expensive.
Whats broken on it? Also your linked pic doesnt work.
In reply to 93gsxturbo :
It's slipping on startup which is causing a fairly loud chattering noise. A 2000-pound door resonates more than you would think it would.
This is an off-brand operator. At first glance, I thought it was a brake to hold the door in position but the manufacturer clearly identifies it as a clutch. I'm not sure why it even needs a clutch. We predominately deal with Brookfield operators. No clutch or brake is needed. The stacked gearboxes provide more than enough door control.
Trying the image again.
Can you just send the clutch out to be relined. We have a semi truck ship that does it here in San Diego. They even make brake pads as long as you provide the backing plate and are willing to pay.
In reply to wearymicrobe :
A radiation room bills around $20k/hr. No chance of shutting it down long enough to do that. We have a hard time scheduling time to work on the doors as it it.
Sounds like you have it figured out, you are correct just get the part and replace it and send the bill. Like you said they have deep pockets. MSC might have it a bit cheaper but no sense the customer shouldnt pay list or more.
Only advice I can give you from working on these things is make sure the supply voltage is stable. I have seen chattering where some relay has burned contacts and has a hard time latching in or instances of voltage drop caused by dirty power or something else causing a load on the line.
In reply to 93gsxturbo :
Thanks for the insight. I'll get the guys to check that when they install the new clutch.
The friction disk or electromagnet could be glazed also, my Warner had a potentiometer to increase clamp rate on the electromagnet. My application was to stop an electric motor from spinning. Is the friction disc " floating" freely?
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