Parlec 7711-050 Tapping Adapter Numertap 700

Product Description

The PARLEC 7711-050 is a quick-change tapping adapter designed for use in CNC machining centers and tapping applications requiring precise torque transmission and repeatable tool changes. It features a 0.367-inch tap shank diameter and a 0.275-inch tap square size, making it suited for standard fractional taps in production environments. The outside shank diameter measures 1.25 inches, and the adapter projects 0.700 inches from the holder face. Quick-change capability reduces setup time during high-volume tapping cycles. This adapter belongs to the NUMERTAP 700 series, a toolholding system recognized in production machining for rigid tap synchronization.

This adapter is used in machine shops running CNC vertical or horizontal machining centers where rigid or synchronized tapping is performed. It is a component-level part installed by machinists or tooling setup technicians. Typical applications include tapping ferrous and non-ferrous workpieces in production or job-shop environments. Coolant-through capability is not included on this model, which should be noted when selecting for high-heat or deep-hole tapping operations where flush cooling is required.

Key Features

• Quick-change design for fast tool changes without full holder removal
• 0.367-inch tap shank diameter fits standard fractional tap shanks
• 0.275-inch tap square size provides positive torque drive
• 1.25-inch outside shank diameter for compatible NUMERTAP 700 series holders
• 0.700-inch projection for clearance in typical tapping setups
• No coolant-through - suitable for flood or external coolant delivery setups

Compatibility

Designed for use with PARLEC NUMERTAP 700 series tapping chucks and holders that accept the 1.25-inch outside shank diameter. Specific compatible chuck models were not provided in the product data; verify holder bore size and series compatibility before ordering.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician familiar with quick-change tapping systems. Ensure the machine spindle is fully stopped and the toolholder is secured in a vise or fixture before inserting or removing the adapter. Confirm tap shank diameter and square size match the adapter specifications prior to assembly. Refer to the machine tool builder documentation and applicable ANSI toolholding standards for torque and runout requirements.