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Tap Holders for OmniTurn
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| OmniTurns have the ability to tap. All GT-75s and GT-Jrs have the spindle drive capability to tap. If you are purchasing an attachment, you will need a spindle drive control option. Any of the spindle drive options can tap. We offer 3 types of tap holders. Each has its advantages and disadvantages. If you have any questions on which one would do you best, please give us a call.
OmniTurn OTC-16 tap holder
OmniTurn OTC-16 Heavy Duty tap holder
OmniTurn self releasing tap holder
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The OmniTurn OTC-16 tap holder has many advantages. The tap holder will fit in all of the tooling bars with a 5/8" bore. The holder is kept from rotating by a pin from the top. It can float back and forth smoothly. A spring keeps the holder back against the tooling bar. If you program the feed of the tap a little lower than the lead, the assembly will pull out a little from the bar. Then, when the spindle reverses, the tap just "floats." For small, sensitive taps, this is better than a holder with a clutch that can snap the tap on the reversal. The holder is case hardened. It will last a long time.
- The holder uses standard OTC-16 collets. Special tapping collets with a square broach in the back are available on request.
- The holder takes no additional space on the tooling bar. It is much smaller than self releasing holders.
- The tap holder will fit in all tooling bars with 5/8" bore.
NOTE: If you are tapping to the bottom of a blind hole, or have to tap to a specific depth, then we recommend a self releasing tap holder. It is much easier to hold a depth with the release of a the clutch.
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| Heavy Duty Tapping Spindle and Holder
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The heavy duty tapping unit is similar to the OmniTurn OTC-16 Floating Tap Holder. It will take the abuse of larger taps. The tapping spindle uses standard OTC-16 collets. It will also work with OTC-16T collets. These tapping collets have a square broached into the back of the collet to positivly drive the tap.
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OTC-16T tap collets
| OTC-16T : 0-6 |
| OTC-16T : 8 |
| OTC-16T : 10 |
| OTC-16T : 12 |
| OTC-16T : 1/4 |
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| Self Releasing Tap Holder
- Right or left hand threading
- Eases tap into work for better matching
- No spring plungers to wear or break
- 1/8" pullout for releasing
- 7/16 max straight tap
- 1/8" max pipe tap
- Only 1.35" overhang from tooling bar face
This tap holder works well with the OmniTurn GT-75 and attachments. The holder has a built in clutch that will release and spin freely when the tap pulls the front end out 1/8". When the spindle reverses the clutch engages so the tap can unthread itself from the part.
Tapping on OmniTurn CNC lathes is easy. All GT's have the facility for it. If you have an attachment, you will need the spindle drive option. The control needs to handle the reversing of the spindle automatically.
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| Tap size |
Part # |
| #0 thru #6 |
1001 |
| #7 - #8 |
1002 |
| #9 - #10 |
1003 |
| #12 |
1004 |
| #14 |
1005 |
| 9/32 |
1006 |
| 5/16 |
1007 |
| 11/32 |
1008 |
| 1/16 pipe |
1050 |
| 1/8 pipe |
1051 |
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