wrote in message
...
On Thu, 19 Mar 2015 18:45:12 -0400, "Jim Wilkins"
wrote:
"Bogus" wrote in message
...
I'm trying to locate a small bearing on a shaft for an instrument.
I initially thought of machining a couple of slots on the shaft
and
using E clips or wire clips.
What about using a push on fastener like this:
https://img1.fastenal.com/productimages/4115723.jpg
Bearing: R4ZZ (5/8" x 1/4" x 5mm)
Shaft: 1/4" stainless steel
Load: normally zero end load, perhaps a kilo or three when
handled.
Speed: Static to a few RPM
Thoughts on practicality?
Are there clips made for this purpose that have a small OD so as
to
not exceed the inner race diameter?
Is there a standard name for these clips for bearing retaining
applications?
In my experience those clips are hard to keep straight unless you
have
a guided tool to press them on evenly, like a small 1/4" drive
socket.
They make a mess of the shaft if you have to move or replace them.
I'd
try set screw collars first, with a snip of solder or string trimmer
line under the setscrew to protect the shaft. You could turn a
shoulder on the side to clear the shield.
http://www.amazon.com/Climax-Metal-L...C2W8Q9ZX4FGWNX
$0.64 each.
-jsw
The center race always stands slightly proud of the sheild, so using
a
(hardned) washer against the bearing and driving the spring retainer
up against the washer would do the job - but as stated it's really
easy to damage the shaft. What's wrong with spacing the shaft using
a
tube sleave over the shaft to locate the bearings - requiting only 1
"retainer" at each end of the shaft, which can be as simple as
threading the end of the shaft and using a nut? Fine adjustment of
position can be done with thin shim washers, and dissassembly is
simple and damage free any time in the future.
If a nut isn't fesible, drill the end of the shaft and tap it for a
hex-head cap screw.
The automotive replacement brake line we'e been discussing is an easy
local source of steel tubing.
Perhaps you could make the end clamps from 1/4" brass compression
fittings.
-jsw