Eye Bolts for Lifting on Large SNL Plummer Blocks

Posted in: , on 28. Mar. 2011 - 16:02

Hi all ,

With regards to Large SNL Plummer Blocks , are there set SWL/WLL for the Eye Bolts on the Plummer Blocks? ( i.e could they be used to lift pulleys )

Thanks for the Help!

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[B]Jonathan Davies[/B] Materials Handling Engineer Anglo American Technical Solutions
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Re: Eye Bolts For Lifting On Large Snl Plummer Blocks

Posted on 28. Mar. 2011 - 02:36

Dear Jonathan,

look at:

http://www.eye-bolts.co.uk/din-580-eyebolts.asp

SWL is limited by the bolt thread size and the material strength of both bolt and parent material (F.i. cast iron from an e-motor housing).

Take care

Teus ■

Teus

Re: Eye Bolts For Lifting On Large Snl Plummer Blocks

Posted on 28. Mar. 2011 - 05:51

If you're using SKF parts have you asked SKF?

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Eye Bolts

Posted on 29. Mar. 2011 - 04:25
Quote Originally Posted by Jonathan DaviesView Post
Hi all ,

With regards to Large SNL Plummer Blocks , are there set SWL/WLL for the Eye Bolts on the Plummer Blocks? ( i.e could they be used to lift pulleys )

Thanks for the Help!

The eye bolts are for the bearing housings only.

I would not want to lift pulleys with those bearings and housings attached as you have a huge amount of wieght with the bearings, shaft, taper locks, keys, and lagging. ■

Lyle Brown
(not verified)

Re: Eye Bolts For Lifting On Large Snl Plummer Blocks

Posted on 29. Mar. 2011 - 11:55

FAG reccomend bearing / housing only.

http://www.santiniketanenterprises.c...47housings.pdf

Couldn't locate similar for SKF, though assume it would be similar.

Even it did have a suitable rated capacity, there are other issues (seal damage etc - maybe not such a problem when pulling things out, though maybe so, when installing new units).

Consider slinging around the shaft in lieu?

Regards,

Lyle ■

Quarryman
(not verified)

Re: Eye Bolts For Lifting On Large Snl Plummer Blocks

Posted on 26. May. 2011 - 10:00

Hi there, as the eye bolt in the housing is a Dynamo type you shouldn't use it for anything else appart from the installation of the bearing. A dynamo eye bolt is a one use item and should be cut up/removed once used. RUD bolts would be ideal items for what you are wanting. Or you could just weld a couple of 16mmdia 8.8 set screws to a 20mm Form G washer :-) ■

Roland Heilmann
(not verified)

Skf

Posted on 27. May. 2011 - 12:43

You may go www.skf.com --> online catalogues --> bearing housings --> large SNL plummer block housings. In the load carrying ability subfolder all given loads are as of centre bearing, not from the eye bolts. That, and as the block housing is not stamped with a WLL mean that the eye bolts OR the plummer block as such are no general lifting appliance! The eye bolts are but a feature for controlled handling of the plummer block as such. Lifting pulleys = NO GO.

I would strongly disapprove upon calculating theoretical values of load bearing capacity or even looking up the eye bolts nominal LBC and use that as permitted lifting capacity. Surely in your op. handbook or so the pl. block is not described with a secondary feature as crane hook replacement.

Regards

R.

On second thought: Housings are often of cast iron. You know what happens, if such material undergoes sudden load changes ("as in Hooooook Up!")? ■