Platter bearing Dual 1219

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babadockia
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Platter bearing Dual 1219

Post by babadockia » 23 Aug 2019 14:28

All right, then! There's me again with a question about what the titles refers at. Here, on the service instructions provided by some distinguished members of this board, oil is prefered to grease, while on the german board dedicated to Dual, grease is the choice. Which one should I use? Thank you all in advance!
PS. I don't understand the love Lenco gets when, proper serviced, a 1219 is so much better in every way

Solist
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Re: Platter bearing Dual 1219

Post by Solist » 23 Aug 2019 23:40

Oil or grease, both will do the trick. I got better results using higher viscosity oil (100 or 150cst max). You are talking about the thrust bearing right?

In regard to the platter sleeve:

There were 2 different types of shafts used by Dual. The one with no grooves was supposed to be used with grease, while the one which has a groove was meant for oil (I am not 100% sure on this one, so someone correct me if I am wrong).

In general is a good idea to use the same oil on the platter sleeve and thrust bearing. Some oils really dont like to be in contact with one another, and they can cause a chemical reaction.

Both Lencos and Duals are good turntables. Some people just prefer all the options that the Lenco turntables offer.

babadockia
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Re: Platter bearing Dual 1219

Post by babadockia » 13 Nov 2019 12:15

Solist wrote:
23 Aug 2019 23:40
Oil or grease, both will do the trick. I got better results using higher viscosity oil (100 or 150cst max). You are talking about the thrust bearing right?

In regard to the platter sleeve:

There were 2 different types of shafts used by Dual. The one with no grooves was supposed to be used with grease, while the one which has a groove was meant for oil (I am not 100% sure on this one, so someone correct me if I am wrong).

In general is a good idea to use the same oil on the platter sleeve and thrust bearing. Some oils really dont like to be in contact with one another, and they can cause a chemical reaction.

Both Lencos and Duals are good turntables. Some people just prefer all the options that the Lenco turntables offer.
sorry for being late with the answer and thank you for the reply. yes, I was talking about the thrust bearing

Hugues TR4
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Re: Platter bearing Dual 1219

Post by Hugues TR4 » 13 Nov 2019 13:43

I first used to use full synthetic oil (10W40) and the platter kept spinning about 3 minutes when stopped at 33 RPM.
But the oil tends to leak towards the bottom and leave the top of the axle dry after a while.
It was Klaus who told me to try Renotac or chain oil, which is more viscous, also for the thrust bearing. He also said that with such a heavy platter, having such a long spinning time didn't make much sense.
Now, I use chain oil in both axle and bearing, I only get 45 sec spinning time but no audible difference.

Hugh

babadockia
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Re: Platter bearing Dual 1219

Post by babadockia » 13 Nov 2019 14:06

Hugues TR4 wrote:
13 Nov 2019 13:43
I first used to use full synthetic oil (10W40) and the platter kept spinning about 3 minutes when stopped at 33 RPM.
But the oil tends to leak towards the bottom and leave the top of the axle dry after a while.
It was Klaus who told me to try Renotac or chain oil, which is more viscous, also for the thrust bearing. He also said that with such a heavy platter, having such a long spinning time didn't make much sense.
Now, I use chain oil in both axle and bearing, I only get 45 sec spinning time but no audible difference.

Hugh
Hi, and thank you for the reply. My problem was and still is what should I use in platter thrust bearing, same oil i use in shaft, chain oil or any oil with viscosity higher then 68 or molybden grease because somebody told me to not mix certain oils with certain grease

DSJR
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Re: Platter bearing Dual 1219

Post by DSJR » 13 Nov 2019 14:26

the recommendation for 12** Duals was Renotac 342, which is a lovely smooth feeling but adhesive oil. Now the descendant of this can only be got in 100l drums I gather, it would appear that chainsaw oil is a similar type, which shouldn't run-off as engine oil does.

A longer platter spin-down time doesn't indicate lower friction to me, but lower drag - and that's a different thing entirely in my book. You don't want any turntable platter to wobble even slightly on its bearing (all the Duals I've come across are bloody good in this respect to be fair) and in such circumstances such as some Thorens and *some* later Lenco's for example, a heavier viscous oil (sinter-safe if necessary) may well be perfect. Hypoid gear oil as I once used is apparently not a good idea in sintered turntable bearings although as rotational speeds are so low, it may not be such a major issue?

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