STUDER A80 Bearings and where to buy them - HELP!

[audioguy1958]

Ooops.

 

[stratus]

I took SKF E2 Type. Very smooth, low friction and silent.

 

[andromedaaudio]

SKF is very high quality , these pictured closed bearing types from your post come with standard lubricant (you cant add lubricant later) , besides the wear you get after 40 years of use , im pretty sure all those old studers have dried out bearings.

We use SKF standard all over the world , big ones up 1500 mm

 

[andromedaaudio]

I dont understand however why you choose 608-2Z/C3 , C3 stands for larger then normal clearance .


https://www.skf.com/group/products/.../bearing-basics/internal-clearance/index.html

 

[waltzingbear]

when considering bearings remember that tighter tolerance does not necessarily mean lower noise. Often on unsorted bearings lower ABEC ratings will be lower noise than ones with higher ABEC ratings.

Studer ordered vast numbers of bearings and had them sorted for noise, at that volume it was economical. We don't have that advantage today. The manufacturer of a specific bearing is also no guarantee of low noise, it "may" have a greater chance of lower noise, but at the numbers we use....

I wish it were different today, but we have no reliable or consistent source of precision *and* low noise bearings.

Cheers
Alan

 

[andromedaaudio]

Have you ever looked inside a SKF factory environment.
Laboratory level ultra modern environment.
The instruments they now have to make bearings and do Qc are of a much higher Standard then in the sixties.
What a top quality bearing was in the sixties is probably average quality now.

 

[microstrip]

Not exactly about Studer A80 bearings, but related to A80 maintenance - does anyone know about a place in Europe that can sandblast Studer/Revox capstan's? I have addresses in the US and Australia, but would like to avoid going through customs.

 

[waltzingbear]

http://www.audiohouse.ch/index.html

I don't know them at all, but they were designated by Studer (Harmon) to take over support.

Cheers
Alan

 

[microstrip]

http://www.audiohouse.ch/index.html

I don't know them at all, but they were designated by Studer (Harmon) to take over support.

Cheers
Alan

Thanks - they do not do capstan sandblasting or sell parts for motors, they only refurbish them as an whole. They do a great job, but very expensive - over euro 1000 including taxes for an A80 capstan motor.

 

[sigitask]

Have you ever looked inside a SKF factory environment.
Laboratory level ultra modern environment.
The instruments they now have to make bearings and do Qc are of a much higher Standard then in the sixties.
What a top quality bearing was in the sixties is probably average quality now.

They do not take to much attention to noise today. Old bearings was less noise. SKF its not best. I use EZO Japan, or NSK Japan, they have less noise as SKF. Also SKF are producing in many factories around the world. If you can get Sweden production is best not so good is made in Italy, and bad made in US.

 

[sigitask]

I dont understand however why you choose 608-2Z/C3 , C3 stands for larger then normal clearance .


https://www.skf.com/group/products/.../bearing-basics/internal-clearance/index.html

E2 bearings has very low friction, some times is importand, for example for Studer C37, to have not so big tension by rewinding tape.

 

[sigitask]

when considering bearings remember that tighter tolerance does not necessarily mean lower noise. Often on unsorted bearings lower ABEC ratings will be lower noise than ones with higher ABEC ratings.

Studer ordered vast numbers of bearings and had them sorted for noise, at that volume it was economical. We don't have that advantage today. The manufacturer of a specific bearing is also no guarantee of low noise, it "may" have a greater chance of lower noise, but at the numbers we use....

I wish it were different today, but we have no reliable or consistent source of precision *and* low noise bearings.

Cheers
Alan

YES absolutely right, I bought Nachi Japan Abec 7 it it has more noise. I changed to normal bearings.

 

[andromedaaudio]

not so good is made in Italy, and bad made in US.

You are naughty sigitask .

By the way ABEC is nothing more then the US standard.

Just a standarisation like NAB and IEC .

So if you think US is bad you should never buy ABEC standard bearings .


Most of what you say sounds like audiophile cable logic to me .
I come from the industrial world we dont think like that

 

[christensenleif@msn.com]

bearingking.co.uk
rubber side covers for quieter operation
changed to theese in 10 Studer A80R and RC
623-2RS1 SKF Sealed Deep Groove Ball Bearing 3x10x4mm
61900-2RS1 SKF Sealed Deep Groove Ball Bearing 10x22x6mm
big for motion, guide, pinch roller assy and tension sensors and spooling motors
small for tension rollers

 

[sigitask]

You are naughty sigitask .

By the way ABEC is nothing more then the US standard.

Just a standarisation like NAB and IEC .

So if you think US is bad you should never buy ABEC standard bearings .


Most of what you say sounds like audiophile cable logic to me .
I come from the industrial world we dont think like that

Sorry it is my expierience, nothing more, not theoretic logic. Maybe I was not lucky to buy some bearings from SKF US. Maybe it was only this batch bad, but its happen. Maybe is necessary to buy more to make conclusions. But I do not have problems with NSK and EZO bearings, so I made decision to use this Japan made. Another new expierience is for SKF E2 C3, it is low friction bearings. I put it to my Studer C37. Will see how they will work during time.

 

[andromedaaudio]

I just installed these this week .
A 15 K spherical roller trust bearing ,the previous one ran for 40 years .
The worldwide customers i work for only want SKF they want nothing else because its quality

 

[Tango]

I just installed these this week .
A 15 K spherical roller trust bearing ,the previous one ran for 40 years .
The worldwide customers i work for only want SKF they want nothing else because its quality View attachment 69919

15K. Is that the price? I saw a jumper cost in that vicinity.

 

[sigitask]

I just installed these this week .
A 15 K spherical roller trust bearing ,the previous one ran for 40 years .
The worldwide customers i work for only want SKF they want nothing else because its quality View attachment 69919

Looks impressive, but its not for tape recorders

 

[sigitask]

bearingking.co.uk
rubber side covers for quieter operation
changed to theese in 10 Studer A80R and RC
623-2RS1 SKF Sealed Deep Groove Ball Bearing 3x10x4mm
61900-2RS1 SKF Sealed Deep Groove Ball Bearing 10x22x6mm
big for motion, guide, pinch roller assy and tension sensors and spooling motors
small for tension rollers

RS is ruber contact seal? It has probably bigger friction?

 

[christensenleif@msn.com]

it´s not the "lid" that seals the bearing that defines friction..they are very quiet
must contain correct lubrication which stays correct when heated by high revs
was recommended by ww Studer expert