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Bearings and housing for the classic precision mount
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<blockquote data-quote="moonbase" data-source="post: 1071279" data-attributes="member: 178786"><p>Spiff,</p><p></p><p>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.</p><p></p><p>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.</p><p></p><p>The allen key for the bearing shaft bolts is M14 across the flats for the M16 bolts that are usually fitted.</p><p></p><p>If you check back through some of my Precision refurbishment topics or for sale topics there will be pictures available.</p><p>For convenience, I have attached some pictures of the original Precision bearings and the replacements.</p><p></p><p>If you are replacing the bearings it may be a good opportunity to check if the bearing shaft bolts need replacement?</p></blockquote><p></p>
[QUOTE="moonbase, post: 1071279, member: 178786"] 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? [/QUOTE]
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General Topics
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Bearings and housing for the classic precision mount
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