Colchester Student 1800 headstock bearing adjustment

This topic has 4 replies, 3 voices, and was last updated 9 April 2021 at 19:34 by Stuart McG.

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9 April 2021 at 09:10 #538786
Stuart McG
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@stuartmcg
Does anyone out there know how to set the preload on the main headstock spindle bearings on the Student 1800 please? These machines are fitted with two Gamet taper roller bearings, the left-hand one being a spring-loaded P type. The maker's manual is no help.
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9 April 2021 at 09:10 #33816
Stuart McG
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@stuartmcg
9 April 2021 at 15:28 #538864
old mart
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@oldmart
Lathes UK sell manuals for most lathes.
9 April 2021 at 17:48 #538883
Emgee
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@emgee
Stuart, looks like you got the answer on the iO Colchester Group ?

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9 April 2021 at 19:34 #538906
Stuart McG
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@stuartmcg
The reply on the Colchester Group site is nonsense. With 4mm of movement, there would be virtually zero preload on the springs. The only free movement required at the springs is to account for thermal expansion, which would be nowhere near 4mm. I am guessing that only a few thou would be needed, but am trying to get at how they were set in production. I have been onto both Colchester and Gamet, with little joy.
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Colchester Student 1800 headstock bearing adjustment

Colchester Student 1800 headstock bearing adjustment

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