This page lists several types of end terminations used for overhead lifting applications.

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All efficiency ratings are based on the difference between the actual breaking strength of a rope and the attained breaking strength with that specific fittings. The only fitting which will attain a 100% efficiency are spelter sockets; provided they are properly attached.

ALL other fittings are swaged or clamped on to the rope. The swaging or clamping process compresses the rope to varying degrees causing a slight loss of strength. Some publications refer to ‘100%’ efficiency with swaged sockets. Bear in mind, that most wire ropes have an actual breaking strength up to approximately 5%-15% HIGHER than the breaking strength listed in catalogue tables. In other words: a fitting having an efficiency rating of 90% may very well develop 100% of the rope’s CATALOGUE breaking strength because the rope’s ACTUAL breaking may very well be 5%–15% higher.

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wire rope end fitting

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wire rope end fitting

wire rope end fitting

Lasker

(Mechanical)

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(OP)

6 Aug 03 03:04
i have to choose wire rope end for 3/16" stailess.
the options are :
1)socket fitting (positive grip) by  
2)creating a loop using wire clips (by crosby clips for example)

does anybody knows what method is more reliable?

 

hi,i have to choose wire rope end for 3/16" stailess.the options are :1)socket fitting (positive grip) by www.esmet.com 2)creating a loop using wire clips (by crosby clips for example)does anybody knows what method is

RE: wire rope end fitting

MadMango

(Mechanical)

6 Aug 03 09:54

It really depends on the application of the cable and termination. Can you give us something more substantial to work with?

MadMango
"Probable impossibilities are to be preferred to improbable possibilities."
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?

RE: wire rope end fitting

Lasker

(Mechanical)

(OP)

6 Aug 03 10:09

the cable is mounted at an up side down "U" shape on a pulley .
the purpose is to balance weights (at each end).
the balanced item is arm that slides along mast.

thanks,
Lasker

RE: wire rope end fitting

ruble3

(Mining)

6 Aug 03 11:14

if you use a socket with a product called 'Wirelock' you should be fine- Wirelock is a two part resin that is 100%  efficient - clips are only about 85% efficient -I've used sockets and Wirelock for working loads up to 150,000lbs

RE: wire rope end fitting

Lasker

(Mechanical)

(OP)

6 Aug 03 14:50

do you have a link to this "wirelock" ?
thanks,
Lasker

RE: wire rope end fitting

ruble3

(Mining)

6 Aug 03 16:27

Not sure where your located , but a 'Crosby' rep should be able to get it- can try www.thecrosbygroup' - most wire rope vendors will have it also

RE: wire rope end fitting

ruble3

(Mining)

6 Aug 03 16:30

Sorry- should read' www.thecrosbygroup.com'

RE: wire rope end fitting

tomwalz

(Materials)

7 Aug 03 11:40

How many do you have to do?
If I wanted it really reliable I would put a sleeve on it and crimp it in a press.  They do that for chokers on wire rope.  

My initial reaction would be to stop at Home Depot and get something I could put on with a screwdriver.   (Actually I did this a couple weeks ago and I had to use a nut driver but same idea.)


Tom

RE: wire rope end fitting

zqew05

(Mechanical)

23 Aug 03 18:36

Crosby's Pelter socket is the best from a safety standpoint, not u-bolts or clips

RE: wire rope end fitting

IFRs

(Petroleum)

23 Aug 03 19:44

I go to a rigging company and order slings with Flemish ends and heavy duty thimbles, specifying the size, material, strand configuration, type and core of the wire rope.  Leave nothing to chance especially if safety is a concern.  You should also observe standard rope-to-pully size ratios.

RE: wire rope end fitting

chicopee

(Mechanical)

23 Aug 03 20:19

Ruble3 is correct w/ the efficiency ratings, however, w/ clips for wire rope less than 3/8" use 75% efficiency.  While a minimum of 3 clips is required, I think Crosby will allow 2 clips for the 3/16 th wire rope.
You can also make a Flemish loop at the end of the wire rope and get a 100% efficiency.

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