D1-3 Mounting Question

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I have a Boxford lathe fitted with a D1-3 headstock chuck mount.

Just discovered that 3 Allen headed screw in the adaptor are not tight.! What are they and what do they do.?

Just thought I would ask if they are meant to be tight or are part of some adjusting system before I start behaving like a mad octopus tightening them all up.

Cheers, Nick

They are for retaining the cams within the spindle nose. Certainly shouldn't be loose. Unless your system is unconventional or not original, I suspect there should be a spring and a pin behind them that mate with a groove in the cam. It may only be the spring force that is preventing them from coming completely undone.

On my Bantam (and in the spec) the bolt is a cheese headed thing that bottoms out hard against a counterbored shoulder, so I'm not convinced your grub screws(?) are original or correct.

Perhaps a Boxford owner could confirm.

Here's a link to the spec for the Camlock system **LINK** showing you how it works and the recommended components. See 33.5.2 and 3.5.3 for the bolt and pin. No spring is shown unless I've missed something.

Murray

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Thanks for that.

I shall go and 'torque' to them about their behavior of coming loose.

Nck

Hi,

my early 1980's is11.30 is built in a similar way to yours, just like in your photos. The screws are not loose.

you might consider to telephone Boxford and ask them.

steve