[Bell Historians] self lube

[LOVE, Dickon]

I believe similar bearings were used at Wormshill. I don't suppose they will
last as long as Whitstable though...

DrL


-----Original Message-----
From: David Cawley [mailto:dave at d...]
Sent: 14 February 2003 00:16
To: bellhistorians at yahoogroups.com
Subject: Re: [Bell Historians] technical question


We fitted these light bearings at St Alphege, Whitstable (back 6, WBF 1969,
trebles 1974), and they've given 30 years of trouble free service, despite
looking pretty basic. Mind you, the tenor is only 3-1-13; and Phil Jakeman
is the steeplekeeper.

I was told last year that this was Whitechapel's first equal tempremant ring
- something I didn't know when we paid for it! The treble of the six (which
only had about 2 inches of cutting in the soundbow was less successful than
its bearings. After the two trebles were added, which at the time were I
think the lightest bells that WBF had hung for ringing, the deficiencies of
what was now the 3rd in 8 were even more apparent, so the foundry kindly
exchanged it for a new bell.

The only other trouble we had was predictable, getting the clappering of the
front 3 of the 8 right which was achieved by the provision of "medieval
clappers".

Certainly the bells go well and there is no sign yet of bearing fatigue.

DLC
----- Original Message ----- 
From: matthewhigby at a... 
To: bellhistorians at yahoogroups.com 
Sent: Thursday, February 13, 2003 10:21 PM
Subject: Re: [Bell Historians] technical question


In a message dated 13/02/03 20:04:49 GMT Standard Time, djb122 at y...
writes:



One of the towers which I look after has got 4 of the bells hung on
light-duty ball bearings with open sided housings. The bells are of course
quite light (tenor 5 cwt). Can anyone tell me what the life expectancy of
this type of bearing is? They're not showing any signs of trouble at the
moment, but they don't really look very long-lasting and I don't want any
unexpected problems!



The self lube pillow block housings, most often used with light bells (and
indeed some heavy ones - Cheddar until recently) are easily replaceable due
to their simple method of fixing and small cost compared with the SKF Split
housing type of bearing. 
The method of fixing can vary from small grub screws to tapered sleves or an
offset O type ring on the outside.

For example, we recently bought the following 25mm bore bearings from a
local stockist:

RHP self lube with cast iron housings £14.85 + VAT (Complete
Unit)
Koyo copies (which we have used for swing chime and very light bells) £6.32
+ VAT (Complete Unit). 
SKF Split housing with self aligning ball bearings £47.00 + VAT.

The 4cwt 6 at Westwood (1981 WBF) are fitted with similar bearings and are
still going very well indeed. St Edmunds Arts Centre, Salisbury (tenor &
7th) appear to be going well on their 50mm self lube units.

Matthew 
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