Drill Chuck H. Duty
All-Steel Construction, Hardened 3-Jaw Clamping & Precision Concentricity
Engineered for high-torque drilling and rigorous metalworking applications, the SMT Heavy-Duty Drill Chuck features a fully hardened steel body and precision-ground 3-jaw system. Designed for use on bench presses, lathe tailstocks, milling machinery, and heavy portable drills, its classic keyed gear mechanism delivers exceptional clamping force to prevent bit slippage under intense drilling loads.
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Heavy-Duty All-Steel Body: Machined alloy steel construction offers maximum durability and resistance to rotational wear.
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Hardened 3-Jaw Mechanism: Precision-engineered jaws maintain uniform alignment and superior grip force on round-shank drill bits.
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High Concentricity & Runout Control: Delivers stable, low-vibration rotation for accurate hole sizing in metal, wood, and masonry.
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Standard Keyed Tightening: Precision gear sleeve ensures high torque transfer when tightened with a standard chuck key.
✔ Industrial Machinery Essential: Ideal for machine shops, metal fabricators, maintenance engineers, woodworkers, and bulk B2B supply.
Engineered for maximum holding power and long-term durability, the SMT Professional Heavy-Duty Keyed Drill Chuck is built to withstand demanding industrial machining and drilling tasks. Ideal for machine shops, fabrication facilities, and woodworking environments, this drill chuck ensures maximum torque transfer without bit slippage.
Manufactured from high-grade alloy steel, the chuck body, gear sleeve, and internal jaws are heat-treated to resist surface wear and metal fatigue. Its 3-jaw geometry provides accurate centering across a wide range of straight-shank drill bit sizes, minimizing radial runout and maintaining precise hole tolerances even under high lateral force.
Key Features & Benefits
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 Maximum Clamping Force: Keyed gear tightening mechanism applies extreme pressure to hold drill bits tightly during heavy metal drilling.
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Fully Hardened Steel Components: Heat-treated jaws and sleeve resist deformation, extending service life in harsh shop environments.
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 Precision Concentricity: Strict machining tolerances reduce vibration and runout, protecting both the drill bit and the workpiece.
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Broad Machine Compatibility: Standard taper/threaded mounts (e.g., JT3, B16, 1/2″-20 UNF) allow seamless installation on drill presses, lathes, and millers.
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Smooth Key Engagement: Uniform gear teeth design prevents key slipping and rounded teeth during high-torque tightening.
Technical Specifications
| Parameter | Specification Details |
| Product Type | Heavy-Duty Keyed Drill Chuck |
| Material | Machined & Hardened Alloy Steel |
| Jaw Configuration | 3-Jaw Self-Centering |
| Tightening Method | Standard Gear Key (Included) |
| Mounting Options | Threaded (1/2″-20 UNF, 3/8″-24 UNF) or Tapered (B12, B16, JT3, JT6) |
| Clamping Capacity Range | Standard models: 1.5mm – 13mm (1/16″ – 1/2″) / 3mm – 16mm (1/8″ – 5/8″) |
| Target Machinery | Drill Presses, Lathe Tailstocks, Milling Machines, Heavy Power Drills |
MAECENAS IACULIS
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