65 Impala Steering Column Lower Bearing - Impala Tech
LinkBack Thread Tools
post #1 of 3 (permalink) Old 11-25-2014, 01:07 PM Thread Starter
Senior Member
Join Date: Mar 2013
Location: Paramount, CA
Posts: 103
Post 65 Impala Steering Column Lower Bearing

So I ordered the lower bearing for the steering column after the old one fell apart when I was taking the assembly apart. it had a ball bearing, bearing. I order the new one, they sent me a bushing with a good bearing surface for the shaft to ride in, does anyone know if this is an improved design? or did they just send me the wrong part.

Thank you in advanced.

Nacho65SS is offline  
Sponsored Links
post #2 of 3 (permalink) Old 11-25-2014, 01:23 PM Thread Starter
Senior Member
Join Date: Mar 2013
Location: Paramount, CA
Posts: 103
I found that it is an upgrade and direct replacement for the original ball bearing, it is a brass bushing. Fyi
Nacho65SS is offline  
post #3 of 3 (permalink) Old 11-25-2014, 03:37 PM
Join Date: Jan 2006
Posts: 12,488
The ball bearing offers less friction, but the bushing offers better reliability (no moving parts), and a greater savings in cost to produce (which I doubt is being passed along to the end user).

Ball bearings in particular are unreliable if there is a heavy load to be carried. This is do to fact that being as round as it is humanly possible to make them to reduce friction, it also results in the load being carried on a single point of the ball. This can dig a hole in the race as the pressure of the load goes up.

The balls not only roll as a result of frictional forces generated by the turning bearing race, but they spin as well which allows the bearings to resist developing a flat spot. This tendency to fail under heavy loads (cars getting heavier) resulted in the automotive industry to switch over to tapered roller bearings at the axles instead of the ball bearings that they used to install back when cars where horse drawn carriages propelled by basically a lawn mower engine.

Bushings made of semipermeable materials, such as silicone-bronze, can carry heavy loads at a fraction of the cost of a roller bearing (which is also more expensive to make than a ball bearing). The oil that is embedded in the matrix of the molecules support and lubricate the shaft at a much lower cost. And it will last a long time, provided the oil that impregnates the metal stays put (you will notice that the bushing was shipped in a hermetically sealed plastic bag and that the bag was oily inside). Should the oil be squeezed out under excessive loads (the metal is like a sponge in that regard), or more likely evaporate due to excessive heat (such as encountered by dogs locked in a car parked in the sun) then the reliability in service shifts back to the ball bearing.

I will let you decide which is better.

Big Dave
Big Dave is offline  
Sponsored Links


Quick Reply

Register Now

In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome