Overview of AR Collet System

This document provides detailed technical specifications, installation procedures, and component dimensions for the AR Collet system, including collets, nuts, holders, and related accessories.

1. AR Collet Classes and Grades

The AR collets are classified into several grades: AAA, AA, A, and others such as AR/OH, AR/C, AR/GB, AR/GH. Only collets passing strict inspection standards are graded and recommended for use, ensuring high quality and precision.

2. Installation and Features

Instructions for installing AR collets into NA nuts are provided, emphasizing proper fit and secure gripping. The collet chucks feature a defined gripping range and high accuracy of runout (TIR), with specific tolerances depending on the class and size.

3. Gripping Range and Accuracy

The gripping range varies by collet size, for example, AR8 grips from 0.5 to 5 mm, AR11 from 1 to 7 mm, up to AR50 with larger ranges. Runout accuracy is specified per class, with AAA grade offering the highest precision.

4. Dimensions and Types of Collets

Detailed dimensional data is provided for various AR collet types including standard, OH (Coolant Through), C type, GB type (tap collet), and GH type (coolant tap collet). Each type includes measurements such as length (L), shrink range, tap sizes, and form explanations with corresponding figures.

5. Collet Holders and Nuts

The document lists multiple collet holder types: collet holders with flange, short nose holders, Y adjustable holders, two-head holders, pipe thread holders, and boring bar holders. Each holder type includes detailed dimensions (L, L2, L3, L4), nut sizes, optional parts, and compatible collet sizes.

6. Accessories and Tools

Recommended torque values for collet nuts are specified, along with corresponding torque spanners and hook wrenches. Wrenches are categorized by size and type (NA**, NA**S, NA**M), with dimensions and part numbers provided for proper tool selection.

7. Quality Assurance and Inspection

All AR collets undergo inspection to meet strict standards. Only those passing these inspections are graded and supplied to customers, ensuring reliability and performance in machining applications.

Critical Information Summary

• AR collets are graded AAA, AA, A based on inspection results.
• Gripping ranges and runout accuracy vary by collet size and grade.
• Multiple collet types support coolant through and tapping functions.
• Collet holders come in various forms with detailed dimensional specifications.
• Proper torque and wrench tools are essential for installation and maintenance.
• Strict quality control ensures high precision and durability.

This structured information supports selection, installation, and maintenance of AR collet systems for precision machining tasks.