Parlec 7711-087 Tapping Adapter Numertap 700

Product Description

The PARLEC 7711-087 is a quick-change tapping adapter designed for use with NUMERTAP 700 Series tooling systems. It accepts tap shanks with a 0.697 inch diameter and a 0.523 inch square drive size, providing a secure, repeatable connection between the machine spindle and the tap. The outside shank diameter measures 1.25 inches, and the adapter features a 0.700 inch projection. This adapter is installed by machinists and CNC tooling technicians in production tapping applications where consistent thread quality and quick tool changes are required.

The 7711-087 is suited for use in CNC machining centers and tapping machines where the NUMERTAP 700 Series quick-change system is already in use. It is appropriate for both job shop and production environments running standard tapping operations. The quick-change design reduces spindle downtime during tap changes, making it practical in high-cycle tapping setups. No coolant-through capability is included with this adapter.

Key Features

• Quick-change interface for fast, repeatable tap changes without full spindle disassembly
• Tap shank diameter of 0.697 inches accommodates standard tap shank sizing in this range
• Tap square size of 0.523 inches ensures positive torque transfer to the tap
• Outside shank diameter of 1.25 inches for compatibility with NUMERTAP 700 Series holders
• Projection of 0.700 inches for clearance planning in tight-access tapping applications
• No coolant-through passage - suitable for dry or flood-coolant-external tapping setups

Compatibility

Designed for use with the PARLEC NUMERTAP 700 Series quick-change tapping system.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Confirm the machine spindle and holder are de-energized and fully stopped before changing any tooling. Verify the tap shank diameter and square size match this adapter before seating the tap, and inspect the quick-change interface for debris or wear prior to assembly. Follow the machine tool manufacturer's guidelines for torque and drawbar engagement when securing the holder in the spindle.