Reversible Tapping Attachments

'TACO' Patented reversible tapping attachment with robust construction offer following advantages:
	Usable on every vertical drilling machine or machines with rotating non-reversing spindles.
	Right or left hand tapping without modification.
	Complete protection against tap breakage ensured by an ultra sensitive and smooth operating ball-clutch.
	Forward and reverse ball drive design transmits rotational power to the tap and disengages smoothly and silently.
	Axial float ensures smooth tapping and better thread profile.
	Cushioned drive eliminates the possibility of cross threadings during roughing and finishing taps and ensures gauge perfect thread.
	A planetary gear reversing mechanism transmits smooth positive reverse to the tap retraction and it retracts 75% more faster than it enters.
	Accurate depth control by means of its accurate neutral mechanism.
	Batch quantities or mass production of tapping can be achieved accurately by this attachment.
	Having versatile application in every machine shop, it dispenses with laborious hand tapping and use of expensive machines.

Self Opening Die Heads-Model SDG (Geometric Chasers)

Application:
	Most economical thread cutting tool of simple design.
	Achieve mass production with uniform high accuracy.
	For use on automatic and semi - automatic machines - excellent for turret lathes, capstans and screw machines.
	Most suitable for cutting right and left hand - fine, caurse and pipe threads.
	Easy to operate.
	Rugged construction - long service life.
	Heavy duty - pull-off trip.

Features:
	TACO self-opening die heads are heavy-duty and are made with high precision and all parts are hardened and ground. The head can be mounted on turret lathe, screw machine or automat and semi-automat for cutting right and left hand as well as fine, course and pipe threads. All TACO die heads have a fine adjustment screw which enables setting of chasers to cut over - or undersize.
	TACO dia heads are most suitable for heavy duty work and mass production. They open automatically when the selected thread length reaches, eliminating the necessity of reversal of the direction of working spindle.
	The chasers numbered 1 to 4 guided by a keyway are inserted into four corresponding spring loaded slots in the head. By turning the cam ring and with drawing the locking bolt the chasers are kept in position. The closing of the head is then effected by turning the handle, attached to the front part, anti-clockwise until the locking bolt springs into the prepared position. The loading of the cam ring takes place at an angle of 25°.
	TACO die heads, shown in the table below, are normally supplied with a straight shank. The shank is held in position by three screws, and therefore head with any form of flanged shank, such as Morse Taper or other, can be supplied to suit the requirement.