Sure-Grip 3-Jaw Power Chucks

Product catalog summary

Introduction
Hardinge's Sure-Grip® 3-Jaw Power Chucks are engineered for precision and accuracy in workholding applications. These chucks are lever-operated, counter-centrifugal, and dynamically balanced, suitable for high spindle speeds and feed rates without losing jaw force. They are compatible with all CNC lathe brands and are competitively priced.

Design and Features
The chucks are designed using Finite Element Analysis (FEA) for optimal rigidity and fatigue life. They directly mount to ANSI A2-4, A2-5, A2-6, and A2-8 spindles, eliminating the need for adapter plates and reducing tolerance buildup. A large thru-hole capacity minimizes bar stock restrictions.

Specifications
Available in sizes from 4" to 12" for horizontal CNC lathes, with specific models for Hardinge vertical CNC lathes. Standard 1.5mm x 60° serrated master jaws are included, with other serrations available upon request. The chucks offer a TIR accuracy and repeatability of .0005".

Performance
The counterbalance feature maintains optimum gripping force at high RPMs, as shown in gripping force charts. The chucks handle maximum draw bar pulls and gripping forces, with specifications varying by size.

Accessories and Options
Hardinge offers accessories like soft and hard jaws, quick-change top jaws, and conversion kits. Spindle adapters are available for different spindle sizes.

Conclusion
Hardinge's Sure-Grip 3-Jaw Power Chucks provide a reliable solution for CNC lathe workholding, with advanced design features ensuring high performance and adaptability across various machine brands.

Overview
This document details specifications and dimensions for various chuck types used in CNC lathes, including 6", 8", 10", and 12" chucks. It covers models suitable for Hardinge and other CNC lathe brands, highlighting features, dimensions, and performance parameters.

Specifications

Spindle Nose: Sizes include A2-5, A2-6, A2-8, and A2-11 for different lathe models.
Item Size: Chucks range from 6" (150mm) to 12" (300mm).
Model and Part Numbers: Specific model and part numbers are provided for identification and ordering.
Serrations: 1.5mm x 60° serrations for secure jaw attachment.
Thru-Hole Diameter: Varies by size, with larger chucks accommodating bigger workpieces.
Jaw Stroke and Plunger Stroke: Detailed measurements indicate the range of motion for gripping workpieces.
Maximum Draw Bar Pull and Gripping Force: Force exerted by the chuck is provided in pounds and Newtons.
Maximum RPM: Rotational speed limits ensure safe operation.
Weight and Moment of Inertia: Approximate weight and moment of inertia are listed for balancing and performance.
Accuracy and Repeatability: TIR and repeatability values ensure precision in machining.

Dimensions

Bolt Thread: Specifications for secure mounting of chucks.
Diameter and Length: Detailed dimensions for each chuck type.
Thru-Hole and External Gripping Start: Measurements for the thru-hole and external gripping start.

Special Features

Quick-Change Sure-Grip Top Jaws: Compatible with many chucks for rapid jaw changes.
Safety Features: Include centrifugal force and unique locking systems to prevent jaw detachment.

Applications
Specifies suitable chucks for different Hardinge CNC lathe models and other brands, ensuring compatibility and optimal performance.

Specifications
Detailed specifications for various jaw types, including dimensions and materials like 1018 Cold-Rolled Steel and 6061 T-6 Condition Aluminum. Specifications are categorized by chuck size, from 4 inches to 12 inches, including soft and hard jaws.

Procedures and Recommendations
Advises on using oversized jaws, recommending reduced maximum RPM and consulting the chuck manual. Highlights benefits of collet chucks for precision work.

Norms and Standards
Mentions serration standards, including 1/16" x 90° and 1.5mm x 60°, and references American Standard and metric tongue and groove standards.

Product Offerings
Hardinge offers products like Quick-Change Top Jaws, Quick-Change Conversion Kits, and Collet Adaptation Chucks to enhance productivity and flexibility.

Key Data from Tables
Tables provide detailed measurements for each jaw model, including part numbers and weights, specifying serrations and bolt sizes.

Contact Information
Hardinge Inc. provides contact details for ordering and inquiries, including phone numbers and a website for online orders.