Narex Vhu 2 1/8", Instruction Manual

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We are confident that the Vhu 21/8”, 31/8”,Vhu 47/8” and Vhu 6 ¼ ” universal boring heads will
enable you to perform the most accurate and intricate operations on your boring machines.
The Vhu 21/8”, 31/8”, Vhu 47/8” and Vhu 6 ¼ ” universal boring heads enable a large number
of various operations which, however, require a wide choice of tools, which – in the majority of
cases – will not be utilised. Therefore, along with each Vhu boring head the above specified
tool bits are supplied as standard accessories. Tools for recessing, thread cutting and other
special jobs can be made by grinding from semi – products 5/16” x 6/16” x L (for Vhu 21/8”,
31/8”) or 3/8” x 3/8” x L (for Vhu 47/8” and Vhu 6 ¼ ”).
By using two reducing sleeves supplied as standard accessories it is possible to work with all
types of standard tools with a circular cross section shank of 3/4” and 5/8” dia.
VI. Description
1. Braking ring 9. Tool slide lock screw 17. Holding rod
2. Engagement ring 10. Trip dog 18. Flange
3. Control ring 11. Trip dog pin
4. Tool slide fine setting dial 12. Dial for quick traverse of tool slide
5. Tool slide 13. Lubrication nipple
6. Adjusting screw 14. Clutch adjusting
7. Holes for rods and holders 15. Clutch
8. Lock screw 16. Automatic transverse feed dial