Tegara CAT40 5/16" x 3.15" Shrink Fit Tool Holder G2.5 30000 Balanced NEW 202-7805 P

Taper ground to AT3 or better specification ensures 80% or more contact with spindle to reduce harmonics and improve runout tolerance / Inside bore are precision turned to engage a better contact with retention knob's pilot to increase rigidity / Precision turning surface finish provide perpendicular contact with the flange of retention knob to increase rigidity / Tool holder is balanced to G2.5 30,000 RPM on a HAIMER Tool Dynamic Balancing System from Germany. Balanced tool holder minimizes the centrifugal forces which minimize the stress on spindle bearing, minimize vibration and maximize the cutting tool's life cycle and greatly improve surface finish. / Unique design feature in the flange to minimize the off-balance nature of CAT 40 taper specification. On the shoulder under the flange, a side is mill flat to compensate the weight of the metal chips lost from forming the spherical hole in the flange. This design allows the left side and right side of the holder to achieve 50-50 perfect weight distribution in its upright position, like the position inside a machine spindle. Symmetrical design in evenly weight distribution will minimize centrifugal force in high speed spinning and thus maximize the holder's ability to hold the cutting tool concentric to spindle rotation / To achieve 3 micron or better internal bore runout, our internal bore are precision ground on Toyo CNC grinder from Japan. There is not cutting corner on this time consuming internal grinding process and the low runout would contribute to longer cutting tool life and better surface finished /

• Shank Size: CAT40 taper shank designed for secure mounting and compatibility with CAT40 spindles
• Bore Diameter: 5/16 inch precision bore diameter for accurate tool holding and minimal runout
• Projection Length: 3.15 inch projection length provides optimal reach for various machining applications
• End Mill Holder Style: Standard style end mill holder suitable for general machining operations
• Max. RPM Balanced to: G2.5 30000 RPM balanced on HAIMER Tool Dynamic Balancing System for reduced vibration
• TIR (Inch): 0.0001 inch Total Indicator Runout ensures exceptional precision and surface finish quality
• Drawbar Thread Size: 5/8x11UNC standard thread size for secure retention knob connection
• Nose Diameter: 0.83 inch nose diameter provides stable interface with machine spindle
• Bore Depth: 1.42 inch bore depth accommodates various tool shank lengths and configurations
• Coolant Configuration: NOT Coolant Through design, solid construction for maximum rigidity and strength