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CAT40 3/4 x 3" Coolant Thru End Mill Tool Holder

SKU
202-7572
$83.00
In stock

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Resources

Catalog Page 219 Tegara CatalogCalifornia Proposition 65 Warning
Downloads
CAT40 34 3 EM COOLANT Tool Holder.dwg
CAT40 34 3 EM COOLANT Tool Holder.dxf
CAT40 34 3 EM COOLANT Tool Holder.pdf
CAT40 34 3 EM COOLANT Tool Holder.step
main product photo

Details

More Information
Mfg SKU #202-7572
Tool Holder CategoryEnd Mill Holder
BrandTegara
shank sizeCAT40
Bore Diameter3/4
projection length3
end mill holder stylestandard
max rpm balanced toG2.5 20000
TIR (inch)0.0001
drawbar thread size5/8x11UNC
Stop Screw Thread Size5/8-18 UNF
Nose Diameter1.70
Dual Contact Tool HolderNo
Coolant ThroughCoolant Port

Design

shars cat40 tool holder

The Devil's In The Details

When you aspire to create one of the most competitive tool holders on the market, the details count. We invest heavily in extensive automation manufacturing and top of the line Mazak and grinding machines while pouring our heart and soul into bringing the tool to life. While not satisfied with just being good, so through customer data and rigorous testing, our R&D team are able to blend over 40 years of manufacturing know-how and real-world feedback to improve the tool holder's design and performance.

shars cat40 tool holder

Start to Finish

We optimize our process for both efficiency and accuracy by utilizing Kawasaki robotic arms to load and unload bar stock into the Mazak multi-tasking machine centers. We use SCM420 alloy steel to lay the foundation and case harden to RC 57-59 with a core of RC 34-39 to provide good core strength and maximize wear life. The core creates a dampening effect which reduces vibration in high speed milling to improve surface finish. The AT3 or better taper accuracy ensures 80% or better taper contact with spindle and using Stotz Air/Electronic Gaging for inspection on the taper. We precision grind the internal bore surface to <.0002" TIR and all bores are ground on a CNC grinder to ensure close run-out tolerance and evenly contact between the collet and the bore pocket. We use Haimer laser balancing machines to deliver a tool that can operate flawlessly at 20000 RPM and Mitutoyo or Mahr indicators to check the run out.

Craftmanship

  • shars cat40 tool holder

    AT3 or Better

    Taper ground to AT3 or better ensures 80% or more contact with spindle to reduce harmonics and improve runout tolerance

  • shars cat40 tool holder

    Pilot Contact

    Inside bore are precision turned to engage a better contact with retention knob's pilot to increase rigidity

  • shars cat40 tool holder

    Taper End Face

    Precision turning surface finish provide perpendicular contact with the flange of retention knob to increase rigidity

Tech Specification

  • Taper Size

    CAT40

  • Bore Diameter

    3/4"

  • Projection Length

    3.00"

  • Bore Tolerance

    H6

  • TIR (at nose face)

    < 0.0001"

  • Max Balanced To

    G2.5 20,000 RPM

  • Coolant Type

    Coolant Port

  • Rear Thread Size

    5/8-11

  • Nose Diameter

    1.70"

Spotlight

  • Coolant Port Demo



     

  • Dynamic Balancing


    Tool holder is balanced to G2.5 20,000 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. 

  • Pre-Balance Design


    Unique design feature in the extension nose to minimize the off-balance nature of CAT 40 taper specification.  On the side of flange where a half spherical hole is located, a flat is cut into the cylinder nose to compensate the weight of the metal chips lost from forming this spherical hole.  And when the holder is placed into the Haimer balance machine, less holes would need to be drilled in the v groove of the flange to protect the rigidity of the tool holder. 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.

  • Coolant Port


    2 Coolant ports on the nose of the tool holder direct coolants onto the cutting tool and workpiece to flush out chips and maintain optimal cutting tool performance. Coolant port can be sealed with the included stop screw to drive coolant to the center bore for coolant thru cutting tools. Stop screw needs to be completely threaded in to sit flush with the nose. Coolant port thread size is M4 x 0.70 with 5mm Length.

  • Tool Holder Cutting Demo



    Watch a quick demo on Tegara tool holder in action to go through the aluminum block like butter. The USA-Made end mills with high helix angle are designed for aluminum to increase feed rate and leaves a good surface finished. The workpiece is clamped in the Tegara 690X vise and machined in a Haas VF7 mill 40 taper.

     

  • CAT40 Coolant Thru End Mill Tool Holder in Action

    End Mill used is a Gorilla Mill 1/2" 3 Flute Silverback Knuckle Dragger Series (SKU 422-3122)

    RPM: 15000 ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎IPT: 0.005

    SFM: 1963 ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎DOC: 1.0

    IPM: 225


  • Flange and V-groove are precision ground to ensure reliable tool change

What’s Included

What's Included

  • Balance report
  • End mill locking screw with 5/8-18 UNF thread by 1/2 length
  • 2 stop screws (M4 x 0.70 with 5mm length) for the coolant ports

Reviews

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