Sony TTS 8000 (All in Discussion)

My interpretation of the parts is one where the Pressed Bowl has an additional pressed form that receives the Trust Pad / Sump Plug and the Square Walled O Ring seats into this.

If the Sump Plug is containing a Lubrication the Rubber Washer is also appearing to be serving the purpose of containing the lubrication.

As the Sump Plug (when in use with a original Thread Seal or with a New Applied Thread Seal ?) is being reported as Successfully retaining a Lubrication.

The reports that also make it known that a Lubrication is being found as escaping into the Bowl leads myself to the thoughts the Rubber Washer is functioning as a Side Wall.

As it seemingly is not able to retain a certain lubrication type in a report.

The Idea of discovering a Part that can be much improved is desirable.

Read my first paragraph in Post 3, I am not looking to suggest I am with all the correct terminologies or skill sets to overcome some of the weaknesses in the TTS 8000 Design.

From my end this a thread has produced a response and transparency about the issues from TTS Owners.
Solutions have been sought prior to this thread and now they are made known appear to be recognised with and very worthy of being put to use.

There is room to discover a few other methods that will hopefully be received as being quite beneficial as well.
 
Considering the use of sintered bronze bushes and grease on the thrust ball it's highly unlikely it was intended to be a wet "sump" or that the rubber gasket was intended to seal lubricant.

How is proper lubrication to be insured with the Torlon replacements?
 
I am looking into Parts that might be a useful straight exchange Part for the Square Walled Washer.
I have put a few inquiries out as well to see if any thoughts are to be made known on the Subject.

There is a Part I am thinking might be useful, I have to find a Dimension that will hopefully be viewed as useful. I will get a second opinion before I present a Link.

In my research of the History of Sintered Parts, the Part is said to be containing approx' 25% of it own weight in oil.
The primary selection for the part suggests they are to be used in positions where conditions were extreme and where other Methods had continuously failed.
The Sintered Bush was the Design that made new inroads into resolving the reliability issues.
How much Lubricant was designed to be in the compartments the Sintered Bush was produced to be housed in ?
Would a Vintage Vehicle Owner of today, leave a Vehicle from the era of the Sintered Bush Development, leave the Compartment that receives the Bush Dry and depend on the Sintered Bush, to protect a Vehicle that I am thinking might make a Few Hundred Thousand $$'s as a Sale Vehicle.
I'm sure there is a easy to discover answer to the above.

The Sintered Bronze Parts have been selected for positions in a Mechanical design that might not be easily accessed and could offer a extended service Life if a complication developed in a compartment, especially if a loss of lubrication was occurring.

I don't know if a Sintered Bush in a TTS 8000 should be given additional treatments with a Lubrication, I certainly would not advise against it on a well used Vintage TT.
I would advise against believing the adding of a Lubrication is a 'fix all' solution.

From recollection, there are other Brands TT's that have used the Sintered Bush and also have a Instruction in a Manual to add Lubrication to the Bearing Housing.

Being myself honed from the Lenco School of thought, I naturally lean to the idea that a Sintered Bronze Bush will receive a good coating of a Lubrication.
I haven't got a Scooby if this is a Lenco recommendation.

As the Sintered Bronze Bushes in my TTS 8000's are noticeably deteriorated, an alternative method was sought.

It certainly looks like seeking out the alternative method has been a beneficial one, and when produced, it certainly allows for the removal of the Old Materials from the assembly, which is quite satisfying.
 
From recollection, there are other Brands TT's that have used the Sintered Bush and also have a Instruction in a Manual to add Lubrication to the Bearing Housing.

Being myself honed from the Lenco School of thought, I naturally lean to the idea that a Sintered Bronze Bush will receive a good coating of a Lubrication.
I haven't got a Scooby if this is a Lenco recommendation.

.


well in contrast i can name one that doesn't,the pioneer plc-590,in the owners manual it clearly states no lubrication is necessary and guess what bearings they used, yep oilites.
before you all rush out and start buying reamers and torlon bushes the first thing i would do is remove the bearing housing and soak it in warm heated oil for 2 hours minimum,you may well find the play has reduced and the bearing turns with less or no noise.
 
All I can say is that relubricating the bushings of my NOS TTS-8000 (having play and noise as well) in vaccuum with dedicated oil for sintered bronze doesn't improve anything.


Of course the Klueber ISOFLEX PDP61A I used is of low viscosity. Maybe a heated up higher viscosity oil makes the difference.
 
I have had a look at the TTS 6000 and even though there is a Limitation on the information, it is possible to find reports on import TT's, with what I am interpreting as, referring to a excessive play in the Bearing.

Further Information sought out suggests the 6000 was reserved for the Domestic Market.

Am I correct in assuming the TTS 6000 has the Mechanics of the TTS 8000,
and that a few different electronic interfaces were the main differences ?
 
i will treat mine like any other tt and periodically check and if needed add a smeer to the spindle.

Fair practice. I'm trying to understand if the engineer took lubrication in to consideration, and if so in what ways. Many non-sintered turntable bearings use a 60deg crosshatch finish on the bushing or shaft to facilitate lubricant dispersion and coverage. What is the designed solution for this implementation?
 
My discussions and Design for the Bush I put on Paper, incorporated a method to enable a Lubrication to be added with a Hypodermic, and Syringed into the Lowest Level off the Bearing Housing.
The Engineer offered a second method to be incorporated to assist with this design, and improve the application method.
The two methods both remained in the Diagrams Produced for the entirety of the changes to be carried out on the Bearing Assembly.

A Cross Hatch on a Interface Surface of a Bushing is an Engineering Design produced to assist with a movement of lubrication, but it is also produced to work in an environment where an abrasive might develop and the Particulate will be contained within the Cross Hatch, that significantly improves on the removal of the part and preventing it from becoming detrimental.
 
i may have good news,they are only 15 minutes away from where i work,they do custom small batches so i will take the housing to them tomorrow and see what they say about making a new rubber seal.
Custom Rubber Moulding Tooling

Brilliant Jamie, I was looking for a 0 ring, but it is not easy to find. I guess this could solve the main issue of the dry bearing.
As mentioned before some play has to be there to make some room for the oil. Hence, when the bearing is dry the play is too big, although it could be designed like that. So, as also questioned above: design or poor quality?
I think when the bearing could be filled with oil, a new rubber seal installed, the play would be gone and the problem solved in most cases.
New Torlon bushes wouldn't change that issue, the bearing has to be sealed to provide long lasting lubrication, as well as some damping which comes along with an oil filled bearing.
Long story short: I think the rubber seal is needed in all possible solutions discussed here.
 
The Link is to a Part I have looked at.
I have to see which materials it can be found to be produced from.

It is close to a Dimension that might be usable, but a further search will hopefully find a Part with a more attractive Dimension.
There is a 5.3mm Cross Section available from this Supplier as well, but I am not sure how the OD will work within the Sump.
A Cross Section of 4mm or slightly increased would probably be a reassuring start place.

The X Ring Design is looking like it can be a Part that would contain a Lubrication.

The Methods will hopefully keep coming to improve on the Rubber and one will hopefully be discovered.

My own experience has used a Oil as a Temporary Measure to attempt to remove the excessive play I have witnessed on the Spindle.
At a later revisit the Tapping Noise was once again able to be created when applying a Gentle Finger Pressure, my goal has been to overcome the Play.
I have not concerned myself with a Bearing Noise from the Operation of the TT, as I have been on route to have New Bushes.

As and when I start to take on the work, where I am concerning myself with the Noise from the Bearing, a Stephoscope will be my go to tool.
This is a Method that has been used by a friend on their TT's Modifications.
During the Demonstrations of the Work, the performances are quite memorable for their Performance.
The Same friend also used to Laser Record the Temperature of Certain Parts over extended periods of running time to see how the Methods of Lubrication Impacted onto the TT.
Quieter and Cooler being the Goal.




Search - ERIKS Seal Shop