Jacobs Super Chuck Keyed Ball Bearing Drill Chucks

Features:

• Specially engineered for heavy duty close tolerance production drilling.
• Ideal for use on jig borers, milling machines, lathes and radial drill presses.
• Ball bearing construction maximizes gripping force and drilling accuracy.
• Jaws are centerground for absolute straightness and alignment.
• All working components are hardened for maximum wear resistance
• Tapered mount drill chucks have an internal Jacobs Taper (JT) that is press-fit onto a corresponding JT arbor (shank) or spindle.
• Keyed chucks are engineered to either loosen or tighten the hold on a tool by using a key. Keyed chucks offer the advantage of applying additional torque on the bit when slippage is a concern during heavy-duty applications.
• Ball bearings are designed to reduce friction in the tightening mechanism and provide a better grip on the drill. They are used for heavy-duty machining and require a key for tightening or loosening.
• Ball Bearing Construction Maximizes Gripping Force and Drilling Accuracy.
• Jaws Center-Ground for Straightness and Alignment.
• One-Piece Sleeve Eliminates Crack Between Driving Teeth Often Found in Other Designs.
• Through-Hardened Sleeve Teeth Plus Hardened Nose and Keyholes Provide Outstanding Wear Resistance.
• Fluted Sleeve Standard.
• Each Chuck 100% Inspected for Performance and Precision.
• T.I.R. 0.003″ Maximum at Half Capacity.

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