Collis Tool 85107 End Mill Holder CAT50 1/2 Inch Bore

Product Description

The COLLIS TOOL 85107 is a CAT50 taper shank end mill holder designed for securing end mills in CNC machining centers and milling machines that accept CAT50 tooling. The holder features a 1/2 inch bore diameter and a 7/8 inch nose diameter, with a 9 inch projection from the gauge line to the tool tip. Overall length is 12.25 inches. This type of holder is installed by machinists and toolroom technicians who need rigid, repeatable tool holding for milling operations requiring extended reach or standard setups on CAT50 spindles.

The 85107 is suited for use in vertical and horizontal machining centers equipped with CAT50 spindle interfaces. The 9 inch projection makes it appropriate for applications where clearance over fixtures or deep-pocket milling requires additional tool-to-spindle distance. It accepts 1/2 inch shank end mills and similar tooling secured with a standard end mill holder set screw arrangement. No through-coolant capability is included in this holder.

Key Features

• CAT50 taper shank for direct mounting in CAT50-spindle machining centers
• 1/2 inch bore diameter accommodates standard 1/2 inch shank end mills
• 9 inch projection provides extended reach for deep-pocket or fixture-clearance applications
• 7/8 inch nose diameter for compatibility with standard end mill holder nuts and collets
• Overall length of 12.25 inches for straightforward toolpath and clearance planning
• No through-coolant - flood or mist coolant must be directed externally

Compatibility

Designed for use in machining centers with a CAT50 spindle interface. Accepts 1/2 inch shank end mills. No specific compatible model numbers are stated by the manufacturer for this holder.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Before mounting or removing toolholders, the machine spindle must be fully stopped and the machine placed in a safe, locked-out state per your facility lockout/tagout procedures. Inspect the CAT50 taper and spindle bore for chips or damage before seating the holder, and torque the retention knob and set screw according to your machine manufacturer specifications. Do not exceed the rated projection or overhang limits recommended by your machine tool builder.