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#29131 - 04/24/20 02:24 AM Short Rope Life MRL  
Joined: Oct 2016
Posts: 9
Maston Offline
stranger
Maston  Offline
stranger

Joined: Oct 2016
Posts: 9
We are having 3/8” ropes last about 3 years on an MRL. Any thoughts as to how to extend this?

#29132 - 04/24/20 03:39 AM Re: Short Rope Life MRL [Re: Maston]  
Joined: Apr 2014
Posts: 263
heisenberg Offline
Engineer
heisenberg  Offline
Engineer

Joined: Apr 2014
Posts: 263
Depends what's happening to them?

#29134 - 04/24/20 12:20 PM Re: Short Rope Life MRL [Re: Maston]  
Joined: Oct 2016
Posts: 9
Maston Offline
stranger
Maston  Offline
stranger

Joined: Oct 2016
Posts: 9
Broken lays, we have replaced the ropes twice in 6 years.

Last edited by Maston; 04/24/20 12:31 PM.
#29135 - 04/24/20 01:14 PM Re: Short Rope Life MRL [Re: Maston]  
Joined: Feb 2013
Posts: 759
john jay Offline
old hand
john jay  Offline
old hand

Joined: Feb 2013
Posts: 759
ohio
If it is a Kone MRL you should be using Metric Ropes.

#29137 - 04/24/20 03:22 PM Re: Short Rope Life MRL [Re: Maston]  
Joined: Dec 2015
Posts: 1,536
Indirtwetrust Online content
ElevatorPractitioner
Indirtwetrust  Online Content
ElevatorPractitioner

Joined: Dec 2015
Posts: 1,536
Local 18
Most MRLs use solid core ropes so if they are installed and never oiled they dry out and fail like you describe.

#29144 - 04/26/20 01:27 PM Re: Short Rope Life MRL [Re: Maston]  
Joined: Jan 2010
Posts: 87
Jim Offline
journeyman
Jim  Offline
journeyman

Joined: Jan 2010
Posts: 87
Hollister mrls have a very aggressive sheave groove. Equalization and lubrication is extremely important for rope life.

#29180 - 05/01/20 02:46 AM Re: Short Rope Life MRL [Re: Maston]  
Joined: Feb 2016
Posts: 22
Upndwn Offline
Elevator Guy
Upndwn  Offline
Elevator Guy

Joined: Feb 2016
Posts: 22
Steel core ropes have no hemp. Shipped overseas aka salt
And heat n grooving seem to be common


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