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4/25/2019 | 1 MINUTE READ

Seco's Power Milling Chucks Improve Steel-on-Steel Clamping

Originally titled 'Milling Chucks Improve Steel-on-Steel Clamping '
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Seco Tools designed its power milling chucks to maximize milling performance while contributing to reduced tooling inventories.

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With holding power and transmittable torque said to rival hydraulic and shrink-fit holders, Seco Tools’ power milling chucks deliver 5-micron runout accuracy at 3×D.

The chucks are also designed for application flexibility. Direct clamping technology enables one power milling chuck to hold tools with cylindrical shanks measuring between 0.75" and 1.25" (20 and 32 mm) in diameter, and Weldon-shank tools of 0.75" (20 mm) in diameter. With reduction sleeves, the chuck can accommodate shank diameters in cylindrical plain, Weldon and Whistle Notch tools ranging from 0.25" to 1.00" (6 to 25 mm). The chuck can secure milling tools for roughing and finishing operations, as well as drilling and tapping tools.

To avoid clamping problems sometimes associated with steel-to-steel contact on collet chucks, Seco designed the power milling chucks with a nut and needle-bearing design for better clamping power and minimal tightening force/torque requirements.

Optional coolant-stop screws enable the use of through-tool coolant without the additional expense of ancillary equipment such as heating or hydraulic units, the company says.

Seco offers power milling chucks for HSK-A; Seco-Capto; DIN; BT and BT taper-face; and ANSI (CAT) and ANSI (CAT) taper-face spindle interfaces. Each chuck comes with a spanner wrench, stop screw and operating instructions. A hook spanner for sleeve extraction is available as a separate option.

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