Bearings and housing for the classic precision mount

Spiff

Spiff

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Precision 1.3m Prime Focus Dish & mount.
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Good afternoon from an overcast Mullion Cove Cornwall : )

Does anyone of you most Knowledgeable gentlemen have, or know where to purchase bearings with the casing for the classic Precision mount ?

I have two mounts, the one that I purchased from Moonbase is fine.

The other my original works fine, but there looks to be rust in the top part of the bearing as well as its case.

I note that though both mounts look the same, the allen key size to hold the main through bolt on the bearing is larger on one ?

Both the bolts appear the same size as does the bearing housing.

God Bless Spiff
 
jeallen01

jeallen01

Specialist Contributor
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Pictures maybe?

Also, is there a maker's name &/or part number on the bearing?
 
M

moonbase

Small Dish Man
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2,170
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2.0m Precision
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UK
Good afternoon from an overcast Mullion Cove Cornwall : )
Does anyone of you most Knowledgeable gentlemen have, or know where to purchase bearings with the casing for the classic Precision mount ?
I have two mounts, the one that I purchased from Moonbase is fine.
The other my original works fine, but there looks to be rust in the top part of the bearing as well as its case.
I note that though both mounts look the same, the allen key size to hold the main through bolt on the bearing is larger on one ?
Both the bolts appear the same size as does the bearing housing.
God Bless Spiff

Spiff,

The original bearings used by Precision are ASAHI FT203 bearings (AMI) with a 16mm bore. The FT203 refers to the ASAHI housing and the bearing insert is model 203PR-C. You may find that these are quite dificult to source.

For Precision polar mount renovations I have used RHP SFT16 bearings that are readily available from quite a few UK based suppliers. These come with the equivalent 16mm bore. In addition, the hole spacings on the bearing flange type housing align with the fixing holes on the Precision polar mount.

The allen key for the bearing shaft bolts is M14 across the flats for the M16 bolts that are usually fitted.

If you check back through some of my Precision refurbishment topics or for sale topics there will be pictures available.
For convenience, I have attached some pictures of the original Precision bearings and the replacements.

If you are replacing the bearings it may be a good opportunity to check if the bearing shaft bolts need replacement?
 

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Spiff

Spiff

Regular Member
Messages
353
Location
Mullion Cove Cornwall
My Satellite Setup
Technomate TM-5402HD C1+ Super+ Receiver
Primesat VBox
2 x Actuators
Precision 1.3m Prime Focus Dish & mount.
Inverto Black Pro C120

ARIVA 4K Combo DVB-S2 DVB-T/T2
Primesat VBox
2 Actuators
Triax 1.4m Dish
Titanium C1W-PLL C Band

Six Computers : )
My Location
Mullion Cove Cornwall
Thank you to Moonbase and jeallen01,

Great news that bearings with a housing are available that will fit : )

My installation is like a much loved car to me, I am always updating : )

I have just installed two extra cameras, and small spirit levels to watch the Elevation as the actuators move the dishes up and down.

The red spirit level is temporary, another single one is on order.

There are two other cameras to check the East West settings.

One of them requires replacing as it will not focus in close, hence the fussy picture : )

They are all USB cameras via USB or cat5 links..

Thank you again God Bless Spiff
 

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