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A6-AC Air Collet Closer
Haas offers three types of collet closers for use on HA5C indexing heads. Each of the three designs offers unique benefits you should consider before making a selection. AC125 and AC25 use shop air to drive a piston through a mechanical multiplier to close the collet. This provides greater holding force and reduces operator fatigue, compared to standard manual-handle closers. A simple flick of a lever causes the collet to open or close without effort. On multi-spindle heads, one of these air-actuated closers is required if you plan to use collets, because a standard handle will not fit and is not included.
The A6-AC pneumatic draw bar assembly works with A65C and A616C collet adapter chucks to provide 5C and 16C air collet closing capabilities for the HRT A6. With the A6-AC, collets can be clamped with the flip of a switch. the A6-AC is also compatible with 3J collet adapters that may be purchased through your local tooling supplier. The A6-AC provides up to 5,000 pounds of draw-tube force with .125'' of travel. Clamping force is spring actuated and adjustable to 100 ft-lb. The A6-AC tightens from the rear, and has a 1.75'' thru-hole.
