Industry-leading MEGA ER Grip Collet Chuck Now Offered With Modular KAB Connection


Hoffman Estates, IL – BIG KAISER now offers BIG Daishowa's high precision MEGA ER Grip with the BIG KAISER modular KAB connection, allowing custom collet chuck configurations with standard components.

The MEGA ER Grip was designed to outperform all other ER systems in the four most critical areas of tool holder performance: clamping force, concentricity, rigidity and balance at high spindle speeds. These factors, combined with the system's reliable and stable runout accuracy, amount to significant long-term savings. A major design feature increases the contact length of the internal taper of the chuck body, reducing the undesired overhang of the collet for significant performance increases.

All components of the MEGA ER Grip system are manufactured with BIG Daishowa's high-precision production technology; high rigidity body, precision notch-free nut and AA grade ER collet. BIG's ER collets are made in accordance with DIN6499 and ISO15488 standards and feature the best runout accuracy in the world, hitting a guaranteed .00012" (3 microns) at 5xD. Additionally, by utilizing the MEGA ER Perfect Seal, coolant can be securely delivered through-tool or directed to the cutter periphery.

Now, with the addition of the modular KAB connection, BIG KAISER modular tooling system users have a high precision collet chuck option to use with existing BIG KAISER KAB accessories, like shanks and extensions/reductions. Furthermore, users can make this high precision ER collet chuck as long or as short as they want since the original integral design only averaged a maximum gauge length between six and seven inches.

"This is great for job shops looking to avoid dedicated, one-size-fits all tool holders – it allows flexibility to build a custom tool with standard components," says Jack Burley, VP of sales and engineering, BIG KAISER. "The KAB connection is an extremely rigid modular connection with very accurate ground mating surfaces and the KAB pin for torque transmission."

The MEGA ER Grip is offered in BIG KAISER KAB4, KAB5 and KAB6 connections and can be adapted to any shank and gauge length with the BIG KAISER modular connection. The clamping diameter available is Ø.075"-Ø.787" with the usage of ER16-32 collets.

BIG KAISER Precision Tooling Inc. is a leader in high precision tooling systems and solutions. With brands including BIG Daishowa, KAISER, Speroni, Unilock, Sphinx and more, BIG KAISER's line is focused on extreme accuracy and repeatability. BIG KAISER's mission is to support North American manufacturers with products that are designed and manufactured to a superior standard. Guaranteed.

For more information on MEGA ER Grip, contact BIG KAISER, Hoffman Estates, IL, at 224-770-2999, e-mail or visit

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